CN115171549A - VR display screen and VR equipment based on Mini LED - Google Patents
VR display screen and VR equipment based on Mini LED Download PDFInfo
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- CN115171549A CN115171549A CN202210764455.5A CN202210764455A CN115171549A CN 115171549 A CN115171549 A CN 115171549A CN 202210764455 A CN202210764455 A CN 202210764455A CN 115171549 A CN115171549 A CN 115171549A
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- 239000000758 substrate Substances 0.000 claims abstract description 111
- 239000000084 colloidal system Substances 0.000 claims abstract description 53
- 239000000843 powder Substances 0.000 claims description 6
- 108010043121 Green Fluorescent Proteins Proteins 0.000 claims description 3
- 230000002829 reductive effect Effects 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 9
- 238000003384 imaging method Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000036961 partial effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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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
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/017—Head mounted
- G02B27/0172—Head mounted characterised by optical features
Abstract
The VR display screen based on the Mini LED comprises a substrate and a plurality of light-emitting elements arranged on the substrate in an array mode, each light-emitting element comprises a Mini LED chip and a colloid packaged on the Mini LED chip, the shape of the colloid on the Mini LED chip close to the center of the substrate is different from the shape of the colloid on the Mini LED chip close to the edge of the substrate, and therefore the light-emitting angle of the light-emitting element close to the center of the substrate is larger than that of the light-emitting element close to the edge of the substrate. The VR display screen can converge light emitted by the display screen to eyes of a person to the maximum extent, light loss is reduced, and brightness of the display screen within a receiving range of eyes of the person is enhanced.
Description
Technical Field
The invention belongs to the technical field of VR (virtual reality), and particularly relates to a VR display screen based on a Mini LED (light emitting diode) and VR equipment.
Background
Mini LED is defined as an LED device with a chip size between 50-200 μm. The existing LCD screen Mini LED backlight realizes the spanning development of screen brightness from hundreds of nits to thousands of nits, and the brightness of the LCD screen can be improved through the Mini LED backlight in the prior art.
When the existing LCD display screen with the Mini LED backlight is applied to Virtual Reality (VR) equipment, because the positions of human eyes and the display screen of the VR equipment are fixed, when a user wears the VR equipment, light emitted by the LCD display screen with the Mini LED backlight enters the human eyes after being refracted by the convex lenses, the light outside the convex lenses cannot enter the human eyes, and therefore the light with the large angle emitted by the display screen is wasted.
Disclosure of Invention
The embodiment of the invention aims to provide a VR display screen based on a Mini LED and VR equipment, so as to solve the problem that large-angle light emitted by the existing VR display screen is wasted.
In order to achieve the purpose, the invention adopts the technical scheme that: the invention provides a VR display screen based on Mini LED in the first aspect, including: the light emitting device comprises a substrate and a plurality of light emitting elements arranged on the substrate in an array manner;
each light-emitting element comprises a Mini LED chip and colloid packaged on the Mini LED chip, the shape of the colloid on the Mini LED chip close to the center of the substrate is different from the shape of the colloid on the Mini LED chip close to the edge of the substrate, so that the light-emitting angle of the light-emitting element close to the center of the substrate is larger than the light-emitting angle of the light-emitting element close to the edge of the substrate.
In an embodiment, the colloid encapsulated on the Mini LED chip near the center of the substrate has a first light guide structure for gathering the large-angle light emitted by the Mini LED chip, and the colloid encapsulated on the Mini LED chip near the edge of the substrate has a second light guide structure for gathering the large-angle light emitted by the Mini LED chip near one side of the edge of the substrate.
In an embodiment, the first light guiding structure includes a top surface, a bottom surface contacting the substrate, and a side surface connecting the bottom surface and the top surface, an outer contour of the first light guiding structure is a truncated cone, an area of the top surface is larger than an area of the bottom surface, and the top surface of the first light guiding structure is concave.
In an embodiment, the second light guide structure includes a top surface, a bottom surface contacting with the substrate, and a side surface connecting the bottom surface and the top surface, the side surface is away from the extending direction of the portion on one side of the center of the substrate and has a first included angle with the substrate, the extending direction of the portion on one side of the side surface close to the center of the substrate and the substrate have a second included angle, and the first included angle is smaller than the second included angle.
In an embodiment, a height of a side of the second light guide structure close to the center of the substrate is smaller than a height of a side of the second light guide structure far from the center of the substrate.
In one embodiment, the substrate has a rectangular outer profile.
In one embodiment, the outer contour of the substrate is circular, and the light emitting elements are arranged in a ring shape.
In one embodiment, each of the Mini LED chips comprises a red LED, a green LED and a blue LED; or each Mini LED chip comprises a blue LED, and yellow fluorescent powder or red and green fluorescent powder is arranged on the surface of the blue LED.
The invention provides VR equipment, which comprises two convex lenses arranged side by side and a display screen opposite to the two convex lenses, wherein the display screen is the VR display screen based on the Mini LED.
In an embodiment, the number of the VR display screens is two, and the two VR display screens are respectively opposite to the convex lens.
The invention provides a Mini LED-based VR display screen which comprises a substrate and a plurality of light-emitting elements arranged on the substrate in an array mode, wherein each light-emitting element comprises a Mini LED chip and a colloid packaged on the Mini LED chip, the shape of the colloid on the Mini LED chip close to the center of the substrate is different from that of the colloid on the Mini LED chip close to the edge of the substrate, so that the light-emitting angle of the light-emitting element close to the center of the substrate is larger than that of the light-emitting element close to the edge of the substrate.
The VR equipment provided by the invention comprises two convex lenses arranged side by side and a display screen opposite to the two convex lenses, wherein the display screen is the VR display screen based on the Mini LED, and the light-emitting angle of the light-emitting element of the VR display screen close to the center of the substrate is larger than that of the light-emitting element close to the edge of the substrate, so that light emitted by the display screen can be converged to human eyes to the maximum extent, the light loss is reduced, and the brightness of the display screen within the receiving range of human eyes is enhanced.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a substrate and a light-emitting device according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a colloid on a conventional Mini LED chip;
FIG. 3 is a schematic diagram of an imaging principle of a VR device provided by an embodiment of the invention;
FIG. 4 is a schematic diagram of an imaging principle of a VR device provided by an embodiment of the invention;
fig. 5 is a schematic structural diagram of a Mini LED chip and a colloid on a central region near a substrate according to an embodiment of the present invention;
fig. 6 is a schematic structural view of a Mini LED chip and a colloid on an edge region near a substrate according to an embodiment of the present invention;
fig. 7 is a schematic structural view of a Mini LED chip and a colloid on an edge region close to a substrate according to an embodiment of the present invention.
Wherein, in the figures, the respective reference numerals:
A-VR display screen
1-a substrate;
2-a light emitting element;
3-convex lens;
21-Mini LED chip;
22-colloid;
221-a first light guiding structure;
222-a second light guiding structure;
alpha-a first angle;
beta-second angle.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without inventive step based on the embodiments of the present invention, are within the scope of protection of the present invention.
In the description of the present invention, it is to be understood that the terms "comprises" and "comprising," and any variations thereof, as used herein, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
In addition, in the present application, unless otherwise expressly specified or limited, the terms "connected," "secured," "mounted," and the like are to be construed broadly, such as to encompass both mechanical and electrical connections; the terms may be directly connected or indirectly connected through an intermediate medium, and may be used for communicating between two elements or for interacting between two elements, unless otherwise specifically defined, and the specific meaning of the terms in the present application may be understood by those skilled in the art according to specific situations.
It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship indicated in the drawings, which is solely for the purpose of facilitating the description and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and is therefore not to be construed as limiting the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
The inventor finds that the existing LCD backlight applied to VR is also the LCD backlight of a conventional mobile phone, the visible angle of the display screen is approximately 80 degrees, and the human eye and the display screen of VR equipment keep a fixed angle close to about 0 degrees.
The VR display screen and VR device based on Mini LED provided by the present invention are described in detail with reference to the following embodiments.
Fig. 1 is a schematic structural view of a substrate and light emitting elements according to an embodiment of the present invention, and please refer to fig. 1, a first aspect of an embodiment of the present invention provides a VR display screen based on a Mini LED, including a substrate 1 and a plurality of light emitting elements 2 arranged on the substrate in an array;
each light-emitting element comprises a Mini LED chip 21 and a colloid 22 packaged on the Mini LED chip, wherein the shape of the colloid 22 on the Mini LED chip 21 close to the center of the substrate 1 is different from the shape of the colloid 22 on the Mini LED chip 21 close to the edge of the substrate 1, so that the light-emitting angle of the light-emitting element 2 close to the center of the substrate 1 is larger than the light-emitting angle of the light-emitting element 2 close to the edge of the substrate 1.
The VR display screen of this embodiment can be for the LCD screen, and Mini LED chip 21 is the backlight of VR display screen, and the Mini LED defines: the LED device with the chip size between 50 and 200 mu m is a unit which consists of a Mini LED pixel array and a driving circuit, wherein the pixel center distance is 0.3-1.5mm, and because the Mini LED is smaller than the traditional LED, the light source of the LCD panel can be more finely controlled, and the brightness of the LCD screen is greatly improved.
The colloid 22 on the Mini LED chip 21 of the present embodiment is a protective colloid applied to a chip, and can protect the LED chip from adverse effects of mechanical, high temperature, moisture and other external impacts, ensure normal contact between the Mini LED chip 21 and a next layer of circuit, and improve the working stability and the uniformity of light emission of the Mini LED chip 21, fig. 2 is a schematic structural diagram of the colloid on the existing Mini LED chip, please refer to fig. 2, where the colloid 22 on the existing Mini LED chip 21 is in a semicircular shape, so as to perform the functions of sealing and increasing the light emission angle, and the colloid 22 on the existing LCD screen Mini LED chip 21 is in a uniform shape, that is, all the Mini LED chips 21 have a uniform light emission angle.
Fig. 3 is a schematic diagram of an imaging principle of a VR device according to an embodiment of the present invention, and fig. 4 is a schematic diagram of an imaging principle of a VR device according to an embodiment of the present invention, please refer to fig. 3 and fig. 4, because human eyes of the VR device and a VR display screen a keep a fixed angle, which is close to about 0 °, the VR device according to the embodiment may be VR eyes, a VR helmet, a VR all-in-one machine, and the like, for example, when an experiencer wears a VR glasses, light emitted by the VR display screen a is refracted by a convex lens 3 and then enters human eyes, and light outside a connection line between an edge of the convex lens 3 and an edge of the VR display screen a does not enter human eyes, and is wasted. The colloid 22 shape on the Mini LED chip 21 that is close to base plate 1 center of this embodiment with be close to base plate 1 edge colloid 22 shape on the Mini LED chip 21 is different, is close to base plate 1 center light emitting element 2's luminous angle is greater than and is close to base plate 1 edge light emitting element 2's luminous angle will gather together at the 3 edges of convex lens and the light of the large angle outside the VR display screen A edge line, increases the luminance of VR display screen A in the people's eye receiving range, reduces the loss of light. The glue 22 of this embodiment is dispensed by a dispenser, and the specific material of the glue 22 is not particularly limited in this embodiment. The shape of the colloid 22 on the Mini LED chip 21 near the center of the substrate 1 and the shape of the colloid 22 on the Mini LED chip 21 near the edge of the substrate 1 are not particularly limited in this embodiment.
The invention provides a Mini LED-based VR display screen which comprises a substrate and a plurality of light-emitting elements arranged on the substrate in an array mode, wherein each light-emitting element comprises a Mini LED chip and a colloid packaged on the Mini LED chip, the shape of the colloid on the Mini LED chip close to the center of the substrate is different from the shape of the colloid on the Mini LED chip close to the edge of the substrate, so that the light-emitting angle of the light-emitting element close to the center of the substrate is larger than that of the light-emitting element close to the edge of the substrate.
Fig. 5 is a schematic structural view of a Mini LED chip and a colloid located on a central region of a substrate according to an embodiment of the present invention, and fig. 6 is a schematic structural view of a Mini LED chip and a colloid located on a peripheral region of a substrate according to an embodiment of the present invention, please refer to fig. 1, fig. 5 and fig. 6, preferably, the colloid 22 packaged on the Mini LED chip 21 near the center of the substrate 1 has a first light guide structure 221, the first light guide structure 221 is used for collecting large-angle light emitted by the Mini LED chip 21, the colloid packaged on the Mini LED chip 21 near the edge of the substrate 1 has a second light guide structure 222, and the second light guide structure 222 is used for collecting large-angle light emitted by the Mini LED chip 21 near one side of the edge of the substrate 1. Because the light that is close to the Mini LED chip 21 at base plate 1 center most can get into people's eyes through the convex lens of VR equipment, only partial wide-angle light can not get into people's eyes through the convex lens of VR equipment, the first light guide structure 221 of this embodiment is with the wide-angle of Mini LED chip 21 transmission can not get into people's eyes light gathering through the convex lens of VR equipment, change the emission direction of the wide-angle light of Mini LED chip 21 transmission, make the wide-angle light after the change direction get into people's eyes. Because the large-angle light which is emitted by the Mini LED chip 21 and close to one side of the edge of the substrate 1 and cannot enter the eyes of the person through the convex lens of the VR device cannot enter the eyes of the person, the second light guide structure 222 of the embodiment collects the large-angle light which is emitted by the Mini LED chip 21 and close to one side of the edge of the substrate 1 and cannot enter the eyes of the person through the convex lens of the VR device, changes the emission direction of the large-angle light emitted by the Mini LED chip 21, and enables the large-angle light with the changed direction to enter the eyes of the person. In the embodiment, the light emitted by the Mini LED chip 21 can be converged to eyes to the maximum extent through the structure, so that the light loss can be reduced, and the brightness of the display screen can be enhanced. The present embodiment does not particularly limit the specific structural forms of the first light guiding structure 221 and the second light guiding structure 222.
The first light guiding structure 221 and the second light guiding structure 222 of the present embodiment converge the light emitted by the Mini LED chip 21 and diffused outward, and collect the light, similar to a light guiding pillar.
In an embodiment, referring to fig. 5, the first light guiding structure 221 includes a top surface, a bottom surface contacting the substrate 1, and a side surface connecting the bottom surface and the top surface, an outer contour of the first light guiding structure 221 is a truncated cone shape, an area of the top surface is larger than an area of the bottom surface, and a top surface of the first light guiding structure 221 is a concave shape. The outline of the first light guide structure 221 of this embodiment is a circular truncated cone, the light extraction rate of the Mini LED chip 21 is high, and the top surface of the first light guide structure 221 is of a concave type, so that the large-angle convex lens of the Mini LED chip 21 can not enter the eyes of a person through VR equipment, thereby changing the emitting direction of light and converging the light to the eyes of the person to the maximum extent. The angle at which the top surface of the first light guiding structure 221 is recessed differs according to the position of the Mini LED chip 21. Illustratively, the top surface of the first light guiding structure 221 of the Mini LED chip 21 that is farther from the center of the substrate 1 is recessed by a larger angle.
In a specific embodiment, please refer to fig. 6, the second light guiding structure 222 includes a top surface, a bottom surface contacting with the substrate 1, and a side surface connecting the bottom surface and the top surface, an extending direction of a portion of the side surface away from the center of the substrate 1 and the substrate 1 form a first included angle α, an extending direction of a portion of the side surface close to the center of the substrate 1 and the substrate 1 form a second included angle β, and the first included angle α is smaller than the second included angle β. Referring to fig. 4, since the large-angle light emitted from the portion of the side surface of the second light guiding structure 222 away from the center of the substrate 1 is located at the outer side of the connection line between the edge of the convex lens 3 and the edge of the VR display screen a, and the large-angle light emitted from the portion of the side surface of the second light guiding structure 222 close to the center of the substrate 1 is located at the outer side of the connection line between the edge of the convex lens 3 and the edge of the VR display screen a, the large-angle light emitted from the portion of the side surface of the second light guiding structure 222 away from the center of the substrate 1 can be converged to the maximum extent by setting the first included angle α to be smaller than the second included angle β.
Further, fig. 7 is a schematic structural diagram of a Mini LED chip and a colloid located on a peripheral area of a substrate according to an embodiment of the present invention, please refer to fig. 7, where a height of a side of the second light guiding structure 222 close to a center of the substrate 1 is smaller than a height of a side of the second light guiding structure 222 away from the center of the substrate 1. The embodiment sets up the height that is close to base plate 1 center one side through being less than second light guide structure 222 and keeps away from base plate 1 center one side to be less than, can also practice thrift the use of colloid under the prerequisite that the light that Mini LED chip 21 that assembles near base plate 1 edge one side at furthest got into people's eyes.
Optionally, in some embodiments, the outer contour of the substrate 1 is rectangular. The VR display a of this example is rectangular in shape.
Optionally, in some embodiments, the outer contour of the substrate 1 is circular, and the light emitting elements 2 are arranged in a ring shape. The shape of VR display screen A of this embodiment is circular, and the technical staff can design VR display screen A's shape according to actual need. In the above embodiment, the shapes of the colloids 22 on the Mini LED chips 21 in different areas on the VR display screen a are different, wherein the cross section of the outer contour of the colloid 22 on the Mini LED chip 21 in the central area of the substrate 1 is similar to the shape in fig. 5, the light emitting element 2 emits light to the periphery, the cross section of the outer contour of the colloid 22 on the Mini LED chip 21 in the edge area of the substrate 1 is similar to the shape in fig. 6, and the direction of the light emitted by the light emitting element 2 is located inside the connection line between the edge of the convex lens 3 and the edge of the VR display screen a, so that the light emitted by the Mini LED chip 21 in each area can be maximally utilized.
In the above embodiment, each Mini LED chip 21 includes a red LED, a green LED and a blue LED, and the Mini LED chip 21 is a high-brightness mixed white light source, so that the implementation manner is simple. Or each Mini LED chip comprises a blue LED, and yellow fluorescent powder or red and green fluorescent powder is arranged on the surface of the blue LED.
The VR display screen based on the Mini LED comprises a substrate and a plurality of light-emitting elements arranged on the substrate in an array mode, wherein each light-emitting element comprises a Mini LED chip and a colloid packaged on the Mini LED chip, the shape of the colloid on the Mini LED chip close to the center of the substrate is different from the shape of the colloid on the Mini LED chip close to the edge of the substrate, so that the light-emitting angle of the light-emitting element close to the center of the substrate is larger than the light-emitting angle of the light-emitting element close to the edge of the substrate.
Referring to fig. 1, 3-6, a second aspect of the embodiment of the present invention provides a VR device, which includes two convex lenses 3 arranged side by side and a display screen opposite to the two convex lenses 3, where the display screen is the VR display screen a based on the Mini LED according to the above embodiment.
For example: the VR display screen A comprises a substrate and a plurality of light-emitting elements 2 arranged on the substrate 1 in an array manner;
each light-emitting element 2 comprises a Mini LED chip 21 and a colloid 22 packaged on the Mini LED chip 21, wherein the shape of the colloid 22 on the Mini LED chip 21 close to the center of the substrate 1 is different from the shape of the colloid 22 on the Mini LED chip 21 close to the edge of the substrate 1, so that the light-emitting angle of the light-emitting element 2 close to the center of the substrate 1 is larger than the light-emitting angle of the light-emitting element 2 close to the edge of the substrate 1.
Exemplarily, the VR device of the present embodiment may be a VR eye, a VR helmet, a VR all-in-one machine, and the like. Wherein, the number of VR display screen A is one.
Optionally, in an embodiment, the number of the VR display screens a is two, and the two VR display screens a respectively face the convex lens 3.
In a specific embodiment, the outer contour of the VR display screen a is circular, and both the convex lens 3 and the VR display screen a of the embodiment have circular shapes, that is, the two circles are placed together in a facing manner; taking the diameter of the convex lens 3 as 34mm, the diameter of the visual area of the VR display screen A as 38mm, and the distance between the convex lens 3 and the VR display screen A as 24mm as an example; the normal light emitting angle of the Mini LED chip 21 at the edge of the visible area of the VR display screen a (for example, at the top area marked position in fig. 4) is diffused symmetrically around the arrow, but only the light "below the edge connection line of the Mini LED chip 21 and the convex lens 3" enters the convex lens 3, in this embodiment, the light emitting angle of the light emitting element 2 is changed by changing the dispensing shape of the Mini LED chip 21, and the shape of the colloid 22 can be obtained by measuring the angle between the connection line of the Mini LED chip and the edge of the convex lens 3 and the VR display screen a. By analogy, by designing the colloids 22 in different shapes, the light-emitting elements 2 at different positions have different light-emitting angles, the closer to the middle of the VR display screen A (namely the center of the substrate 1), the larger the light-emitting angle of the light-emitting elements 2 is, the light emitted by the Mini LED chip 21 can be converged to human eyes to the greatest extent by the design, the loss of the light emitted by the Mini LED chip 21 is reduced, and the brightness of the display screen within the receiving range of the human eyes is enhanced.
When the VR equipment provided by the embodiment of the invention is applied to the VR equipment, the light emitting angle of the light emitting element of the display screen close to the center of the substrate is larger than that of the light emitting element close to the edge of the substrate, so that the light emitted by the display screen can be converged to human eyes to the maximum extent, the light loss is reduced, and the screen brightness in the receiving range of the human eyes is enhanced.
In the description above, references to the description of "an embodiment," "some embodiments," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Moreover, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction
The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. A VR display screen based on Mini LED, includes:
the light-emitting device comprises a substrate and a plurality of light-emitting elements arranged on the substrate in an array manner;
each light-emitting element comprises a Mini LED chip and colloid packaged on the Mini LED chip, the shape of the colloid on the Mini LED chip close to the center of the substrate is different from the shape of the colloid on the Mini LED chip close to the edge of the substrate, so that the light-emitting angle of the light-emitting element close to the center of the substrate is larger than the light-emitting angle of the light-emitting element close to the edge of the substrate.
2. The Mini LED based VR display of claim 1 wherein: the colloid packaged on the Mini LED chip and close to the center of the substrate is provided with a first light guide structure, the first light guide structure is used for gathering the large-angle light emitted by the Mini LED chip, the colloid packaged on the Mini LED chip and close to the edge of the substrate is provided with a second light guide structure, and the second light guide structure is used for gathering the large-angle light emitted by the Mini LED chip and close to one side of the edge of the substrate.
3. The Mini LED based VR display of claim 2, wherein: the first light guide structure comprises a top surface, a bottom surface and a side surface, wherein the bottom surface is in contact with the substrate, the side surface is connected with the bottom surface and the top surface, the outer contour of the first light guide structure is in a circular truncated cone shape, the area of the top surface is larger than that of the bottom surface, and the top surface of the first light guide structure is in a concave shape.
4. The Mini LED based VR display of claim 2, wherein: the second light guide structure comprises a top surface, a bottom surface contacted with the substrate and a side surface connected with the bottom surface and the top surface, the side surface is far away from the extending direction of the part on one side of the center of the substrate and the substrate are provided with a first included angle, the side surface is close to the extending direction of the part on one side of the center of the substrate and the substrate are provided with a second included angle, and the first included angle is smaller than the second included angle.
5. The Mini LED based VR display of claim 4 wherein: the height of one side, close to the center of the substrate, of the second light guide structure is smaller than the height of one side, far away from the center of the substrate, of the second light guide structure.
6. The Mini LED based VR display of any of claims 1-5 wherein: the outer contour of the substrate is rectangular.
7. The Mini LED based VR display of any of claims 1-5 wherein: the outline of the substrate is circular, and the light-emitting elements are arranged annularly.
8. The Mini LED based VR display of any of claims 1-5 wherein: each Mini LED chip comprises a red LED, a green LED and a blue LED; or each Mini LED chip comprises a blue LED, and yellow fluorescent powder or red and green fluorescent powder is arranged on the surface of the blue LED.
9. A VR device comprising two convex lenses arranged side by side and a display screen opposite to the two convex lenses, wherein the display screen is the Mini LED-based VR display screen of any one of claims 1-8.
10. The VR device of claim 9, wherein the number of VR display screens is two, and each VR display screen faces the convex lens.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210764455.5A CN115171549B (en) | 2022-06-29 | 2022-06-29 | VR display screen and VR equipment based on Mini LED |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210764455.5A CN115171549B (en) | 2022-06-29 | 2022-06-29 | VR display screen and VR equipment based on Mini LED |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115171549A true CN115171549A (en) | 2022-10-11 |
| CN115171549B CN115171549B (en) | 2023-12-22 |
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| CN202210764455.5A Active CN115171549B (en) | 2022-06-29 | 2022-06-29 | VR display screen and VR equipment based on Mini LED |
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| CN115171549B (en) | 2023-12-22 |
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