CN111798762A

CN111798762A - Display panel and head-mounted device

Info

Publication number: CN111798762A
Application number: CN202010564141.1A
Authority: CN
Inventors: 陈奕静; 陈培欣; 史诒君
Original assignee: Chuangchuang Display Technology Co ltd
Current assignee: Chuangchuang Display Technology Co ltd
Priority date: 2020-06-19
Filing date: 2020-06-19
Publication date: 2020-10-20

Abstract

The application provides a display panel and a head-mounted device, the display panel comprises a substrate, a first micro light-emitting component and a second micro light-emitting component. The first micro light-emitting assembly is arranged at a first position of the substrate, a first top surface is defined on the first micro light-emitting assembly, and light is emitted from the first top surface by the first micro light-emitting assembly. The second micro light-emitting assembly is arranged at a second position of the substrate, a second top surface is defined on the second micro light-emitting assembly, and light is emitted from the second top surface by the second micro light-emitting assembly. The first top surface has a first included angle with respect to the reference surface, the second top surface has a second included angle with respect to the reference surface, and the first included angle is different from the second included angle.

Description

Display panel and head-mounted device

Technical Field

The present disclosure relates to a display panel and a head-mounted device, and more particularly, to a display panel and a head-mounted device capable of enlarging a screen.

Background

Various head-mounted devices are available in the market at present, and part of the head-mounted devices can provide a theatre-level visual effect, so that people can visually see a large-size picture to have better film watching experience. Partial head-mounted devices can integrate the technology of augmented reality or virtual reality, so that people can be immersed in the picture and feel like the scene. In other words, the head-mounted device has a wide application range, and can be used for video entertainment or video games, and can also assist people in work.

However, in the conventional head-mounted device, since the image of the internal display panel needs to be imaged by a plurality of lenses, it is known to those skilled in the art that the addition of the optical module makes the head-mounted device heavier and requires higher assembly precision. In addition, the size of the head-mounted device is limited because the object distance from the display panel to the lens must be fixed and no other components are required to keep the optical path from the display panel to the lens clear. In addition, if the optical path with more complicated design is designed, although it is possible to reduce the volume of the head-mounted device, it is likely to greatly increase the manufacturing and maintenance costs of the head-mounted device. Accordingly, there is a need for a new display technology that can reduce the size and weight of the head-mounted device and provide a good viewing experience for the consumer.

Disclosure of Invention

In view of the above, the present disclosure provides a display panel, which displays a picture by a plurality of micro light emitting devices, and the micro light emitting devices directly project the picture to the eyes of an observer at a plurality of angles. The display panel is no longer imaged by the lens, so that the head-mounted device applying the display panel has smaller volume and lighter weight.

The application provides a display panel, which comprises a substrate, a first micro light-emitting component and a second micro light-emitting component. The first micro light-emitting assembly is arranged at a first position of the substrate, a first top surface is defined on the first micro light-emitting assembly, and light is emitted from the first top surface by the first micro light-emitting assembly. The second micro light-emitting assembly is arranged at a second position of the substrate, a second top surface is defined on the second micro light-emitting assembly, and light is emitted from the second top surface by the second micro light-emitting assembly. The first top surface has a first included angle with respect to the reference surface, the second top surface has a second included angle with respect to the reference surface, and the first included angle is different from the second included angle.

In some embodiments, the reference plane may be a virtual plane perpendicular to the normal direction of the substrate. The substrate may be a plane, and when the first position is at the edge of the substrate, the first micro light-emitting device is connected to the substrate by two first bumps, and the two first bumps are not of equal height. When the second position is at the center of the substrate, the second micro light-emitting component is connected with the substrate through two second bumps, and the two second bumps have the same height. In addition, when the first position and the second position are respectively positioned on the concave surface of the substrate, the first micro light-emitting component is connected with the substrate through two first bumps, the second micro light-emitting component is connected with the substrate through two second bumps, and the two first bumps and the two second bumps are equal in height. In addition, the substrate can be a flexible substrate, and the substrate has an inner concave surface with an adjustable radian. The substrate may define a first display area, the first micro light emitting device and the second micro light emitting device are disposed in the first display area, and a center point of the first display area is aligned with a pupil of a first eye of an observer.

The application provides a head-mounted device, which comprises a display panel, wherein the display panel displays a picture by a plurality of micro light-emitting components, and the micro light-emitting components directly project the picture to eyes of an observer at a plurality of angles. The display panel is no longer imaged by the lens, so that the head-mounted device applying the display panel has smaller volume and lighter weight.

The application provides a head-mounted device, which comprises a first display panel, wherein the first display panel comprises a first substrate and a plurality of first micro light-emitting components. The first substrate defines a first display area. The plurality of first micro light-emitting components are arranged on the first substrate, and emit light towards the light-emitting side for projecting a first picture to a first eye of an observer. The light emitted by each first micro light-emitting component has a first offset angle relative to the light-emitting side, and the first offset angle is related to the position of each first micro light-emitting component in the first display area. Wherein the center point of the first display area is aligned with the pupil position of the first eye.

In some embodiments, the first frame has a first size in the first display area, and when the first frame is observed by a first eye of an observer at the light exit side, the first frame visually corresponds to a second size, where the second size is larger than the first size. In addition, the substrate and the observation surface may have a first distance, and when the first picture is observed by a first eye of an observer on the light exit side, the first picture and the observation surface may have a second distance visually, and the second distance is greater than the first distance.

In addition, in some embodiments, the head-mounted device further includes a second display panel including a second substrate. The second substrate defines a second display area. The plurality of second micro light-emitting components are arranged on the second substrate, emit light towards the light-emitting side and are used for projecting a second picture to a second eye of an observer. The light emitted by each second micro light-emitting component has a second offset angle relative to the light-emitting side, and the second offset angle is related to the position of each second micro light-emitting component in the second display area. The center point of the second display area is aligned with the pupil position of the second eye, the center point of the first display area and the center point of the second display area are separated by a center point distance, and the center point distance is related to the distance between the pupil positions of the first eye and the second eye.

In summary, the display panel and the head mounted device provided by the present application can display a picture by a plurality of micro light emitting assemblies, and the micro light emitting assemblies directly project the picture to the eyes of the observer at a plurality of angles. Here, since no lens is disposed in the head-mounted device, the weight of the head-mounted device can be reduced, the size of the head-mounted device can be reduced, and the manufacturing and maintenance costs of the head-mounted device can be reduced.

Further details regarding other functions and embodiments of the present application are described below with reference to the accompanying drawings.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present application, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a schematic diagram showing a prior art optical imaging architecture;

FIG. 2 is a schematic diagram of an optical imaging architecture according to an embodiment of the present application;

FIG. 3A is a schematic view of a display panel according to an embodiment of the present application;

FIG. 3B is a partially enlarged schematic view of the display panel shown in FIG. 3A;

FIG. 4A is a schematic view of a display panel according to another embodiment of the present application;

FIG. 4B is a partially enlarged schematic view of the display panel shown in FIG. 4A;

FIG. 5 is a schematic view of a head-mounted device according to an embodiment of the present application;

fig. 6 is a schematic diagram illustrating the head-mounted device of fig. 5 corresponding to different pupil positions.

Description of the symbols

1 display Panel 10 substrate

12 a-12 e micro light emitting elements 120 a-120 c

122 a-122 c projection 14 visual first picture

2 display panel 20 substrate

22 a-22 e micro light-emitting components 220 a-220 c

222 a-222 c projection 24

3 head mounted device 30a first display Panel

300a, 300c

first display area

302a, 302c center point

30b

second display Panel

300b, 300d second display region

302b, 302d center point 90 observer eyes

90a, 90c left

eye

90b, 90d right eye

92 article 94 concave mirror

940 Focus 942 virtual Focus

96 virtual image 98 display panel

The distance D1-D6 from the light emergent side A

L ray W1, W2 size

ref reference plane θ₀、θ₁、θ₂Angle of rotation

Detailed Description

In order to specifically describe the embodiments and achieve the effects of the present application, an embodiment is provided and described below with reference to the drawings.

Based on the principle of optical imaging, it should be understood by those skilled in the art that the concave lens can form an erect enlarged virtual image under specific conditions. Referring to FIG. 1, FIG. 1 is a schematic diagram illustrating an optical imaging architecture of the prior art. As shown in fig. 1, if object 92 is placed in front of concave mirror 94 and object 92 is sufficiently close to concave mirror 94, an enlarged virtual image 96 of object 92 should be visible to observer's eye 90 from concave mirror 94. In detail, assuming that object 92 is placed within focal point 940 of concave mirror 94 itself, it can be deduced from the optical imaging principle that virtual image 96 should be located outside virtual focal point 942 behind concave mirror 94 (symmetrical to focal point 940 in front of concave mirror 94). Furthermore, since virtual image 96 is visually spaced farther from concave mirror 94 than article 92 is spaced farther from concave mirror 94, it can be inferred that virtual image 96 is larger in size than object 92.

In practice, the imaging position of virtual image 96 may be derived from the distance from object 92 and focal point 940 to concave mirror 94. Then, from the position of the subject 92 and the imaging position of the virtual image 96, the magnification of the virtual image 96 can be derived. That is, the position and size of the virtual image 96 can be determined as appropriate by setting the focal point 940 of the concave mirror 94 and the position of the object 92. For example, assuming that the object 92 is a picture, the observer's eye 90 can see the enlarged picture from the concave mirror 94, and the magnification ratio of the picture can be calculated in advance from the distance between the object 92 and the focal point 940 to the concave mirror 94.

The present application improves the optical imaging architecture of fig. 1. Referring to fig. 1 and 2 together, fig. 2 is a schematic diagram illustrating an optical imaging architecture according to an embodiment of the present application. In the example of fig. 2, the concave mirror 94 has been removed, and the display panel 98 is used to simulate the light reflected by the concave mirror 94, and the content of the image displayed by the display panel 98 and the content visually seen by the eyes 90 of the viewer will be described below.

In one example, the content displayed on the display panel 98 may be the light reflected from each position of the concave mirror 94 in fig. 1 (or the light incident from each position of the concave mirror 94 to the eyes 90 of the viewer) pre-recorded or measured under the optical imaging structure of fig. 1. Here, since there is an object 92 in fig. 1, the light reflected by concave mirror 94 at each position will naturally contain all the necessary information for the observer's eyes 90 to see virtual image 96. In addition, assuming that concave mirror 94 is regarded as a picture as a whole, each position of concave mirror 94 may correspond to a pixel in the picture, and the light reflected by each position of concave mirror 94 is recorded or measured, and thus may be regarded as image data of all pixels in a picture. The present embodiment does not limit how the light reflected by the concave mirror 94 at each position is recorded, and for example, a high-resolution camera or a photo-sensing component may be used to store the image data.

Then, the image data is fed into the display panel 98, so that the pixels at each position in the display panel 98 display the corresponding image data. It should be understood by those skilled in the art that if the light rays emitted by the pixels at each location on the display panel 98 of fig. 2 are substantially equal to the reflected light rays from each location on the concave mirror 94, the viewer's eye 90 should be able to see the same magnified virtual image 96 from the display panel 98 without the concave mirror 94. In other words, it is only necessary to set the focal point 940 of the concave mirror 94 and the position of the object 92 under the optical imaging configuration of fig. 1, and record the light reflected by the concave mirror 94 at each position and store the light as image data. Finally, as shown by the display panel 98 of fig. 2, the observer's eyes 90 should also be able to see the virtual image 96 with the corresponding size from the display panel 98 under the optical imaging architecture of fig. 2.

After the optical imaging principle is described, please refer to fig. 3A, where fig. 3A is a schematic diagram illustrating a display panel according to an embodiment of the present application. Fig. 3A illustrates a display panel 1, where the display panel 1 may correspond to the display panel 98 of fig. 2. As shown in fig. 3, the display panel 1 includes a substrate 10 and a plurality of micro light emitting devices 12a to 12e, the substrate 10 defines a display area, and the display area may be, for example, an area on the substrate 10 where the micro light emitting devices 12a to 12e are disposed. Here, the present embodiment can define that the substrate 10 has the light-emitting side a, for example, the light-emitting side a is located on the left side of the substrate 10 in fig. 3, and the light-emitting side a should be an objective position relationship regardless of the shape or size of the substrate 10. For example, the observer's eyes 90 are looking at the display panel 1 at the light-emitting side a (left side of the substrate 10 in fig. 3), and it is not limited whether the observer's eyes 90 are directed toward the central axis of the display panel 1. Even if the observer eyes 90 are slightly offset from the central axis of the display panel 1, it can be said that the observer eyes 90 are located on the light exit side a as long as the observer eyes 90 are still on the left side of the substrate 10.

In addition, the micro light emitting devices 12a to 12e may be disposed on a surface of the substrate 10 facing the light emitting side a, and emit the light L toward the light emitting side a. In practice, a plurality of micro light emitting devices 12a to 12e may be disposed on the substrate 10 in an array for displaying a picture (a first picture). In one example, the micro light emitting devices 12 a-12 e can be a self-emitting device, such as micro light emitting diodes (micro LEDs), but the embodiment is not limited thereto. Since the display panel 1 is self-luminous, besides that the observer's eyes 90 can see the first image, the micro light-emitting devices 12a to 12e in the display panel 1 can also be understood to project (or project) the first image to the observer's eyes 90. In addition, the light L (or called a display screen) emitted by the micro light emitting assemblies 12a to 12e of the display panel 1 can be understood as the light reflected by each object in the display screen.

In the example of fig. 3A, the light L emitted from the micro light-emitting devices 12a to 12e at different positions,at a different angle to the light-exiting side A, i.e. at a first offset angle theta₀May be different. Since the substrate 10 shown in fig. 3 is planar, the included angle (the first offset angle θ) between the light L emitted from the micro light-emitting devices 12 a-12 e and the light-emitting side a₀) I.e., the angle between the light L and the normal of the substrate 10, means that each of the micro light emitting devices 12a to 12e has a different light emitting angle with respect to the viewer's eye 90. For example, the included angle θ of the light emitted from the micro-light emitting device 12a at the edge of the substrate 10 (or the edge of the display area)₀The included angle theta of light emitted from the micro light-emitting component 12c at the center of the substrate 10 (or the center of the display area)₀Is smaller. In other words, the light-emitting angle of each of the micro light-emitting assemblies 12 a-12 e may be related to the position of the micro light-emitting assemblies 12 a-12 e in the display area.

To illustrate how the micro light emitting elements 12a to 12e emit light L at different angles, please refer to fig. 3A and fig. 3B together, and fig. 3B is a partially enlarged schematic view of the display panel according to fig. 3A. As shown, for the micro light emitting device 12a (first micro light emitting device) and the micro light emitting device 12b (second micro light emitting device), the micro light emitting device 12a is disposed at a position (first position) relatively close to the edge of the substrate 10, and the micro light emitting device 12b is disposed at a position (second position) relatively close to the center of the substrate 10. Assuming that the center of the substrate 10 (or the center of the display area) is aligned with the eye 90 (e.g. the first eye) of the viewer, neither the micro light-emitting devices 12a nor 12b are on the optical axis aligned with the center of the substrate 10 (or the center of the display area), and therefore both the micro light-emitting

devices

12a and 12b need to divert the light to the eye 90 of the viewer, so that the image information of the display panel 1 can be imaged on the viewer.

In practice, the micro light emitting devices 12 a-12 e may be flip-chip micro light emitting diodes, and the micro light emitting devices 12a may emit light perpendicularly from the top surface 120 a. It should be understood by those skilled in the art that the micro light-emitting device 12a has a flip-chip structure with positive and negative circuit pads (pads) on the other side opposite to the top surface 120a for transmitting voltage or current. In an exampleIn this case, the positive and negative circuit pads are connected to the substrate 10 through two bumps 122a (first bumps), respectively. As shown in fig. 3B, the two bumps 122a of the present embodiment have different heights, for example, the bump 122a near the edge of the substrate 10 is higher, and the bump 122a near the center of the substrate 10 is lower. In other words, although the substrate 10 of the present embodiment is flat, the micro-lighting assembly 12a of the present embodiment utilizes two bumps 122a with different heights, resulting in the top surface 120a being inclined with respect to the substrate 10. In the present embodiment, assuming that a surface parallel to the substrate 10 is a reference surface ref, an included angle θ exists between the top surface 120a and the reference surface ref₁(first angle).

Similarly, for the micro light emitting device 12b, light can be emitted from the top surface 120b perpendicularly, and the circuit pads of the positive and negative electrodes of the micro light emitting device 12b are connected to the substrate 10 through the two bumps 122b, respectively. As can be seen from fig. 3B, the two bumps 122B are also unequal in height, for example, the bump 122B near the edge of the substrate 10 is higher, and the bump 122B near the center of the substrate 10 is lower. At this time, since the micro-light emitting device 12b is disposed on the two bumps 122b with different heights, the top surface 120b has an included angle θ with respect to the reference surface ref₂(second angle). However, unlike the micro light emitting devices 12a, the micro light emitting devices 12b are closer to the optical axis of the center of the substrate 10 (or the center of the display area) than the micro light emitting devices 12a, so that the included angle θ₂Will be less than the included angle theta₁I.e., the top surface 120b is less inclined.

In the case of the micro light emitting device 12c, light can be emitted from the top surface 120c perpendicularly, and the circuit pads of the anode and the cathode of the micro light emitting device 12c are connected to the substrate 10 through two bumps 122c, respectively. However, since the micro-light emitting devices 12c are located exactly on the optical axis at the center of the substrate 10 (or the center of the display area), it should be understood by those skilled in the art that the micro-light emitting devices 12c do not need to shift the light. In other words, as long as the top surface 120c is parallel to the reference surface ref, light rays emitted perpendicular to the top surface 120c can directly enter the observer's eye 90, i.e., the top surface 120c and the reference surface ref have no angle (or the angle is zero degrees). Of course, since the top surface 120c does not need to be inclined, the two bumps 122c (second bumps) need to have the same height, unlike the two bumps 122a and the two bumps 122b which are not equal in height.

Referring to fig. 3A, the light-emitting angle θ of each micro light-emitting device 12₀It is also possible to correlate the focal length of the concave mirror to be replaced or simulated by the display panel 1, so that the person skilled in the art can understand that the light-emitting angle θ is influenced₀The factors of (1) are many, and the present embodiment does not particularly limit the light-emitting angle θ₀The manner of calculation and the angular range of (c). On the other hand, since the display panel 1 is used to simulate the light field information of the display object, when the observer's eye 90 looks at the display panel 1 from the light exit side a, the observer's eye 90 should visually see the enlarged first picture. In the example of fig. 3A, it is assumed that the observer eyes 90 are located on one viewing surface, and that the observer eyes 90 (viewing surface) and the display panel 1 are actually at a first distance D1. At this time, since the visual first picture 14 should be behind the display panel 1, the interval between the visual first picture 14 and the observer's eyes 90 is represented as a second distance D2. As shown in fig. 3A, the second distance D2 should be greater than the first distance D1. In addition, as will be understood by those skilled in the art from the foregoing description of fig. 1, assuming that the picture (e.g., the region where the micro light-emitting devices 12 are disposed) in the display region is actually the first size W1, the first visual picture 14 may correspond to the second size W2, and the second size W2 should be larger than the first size W1.

In one example, if the distance difference between the second distance D2 and the first distance D1 is considered as a preset distance, the preset distance shall be referred to as an image distance. Since the present embodiment is intended to simulate the optical imaging architecture of fig. 1, theoretically the distance (object distance) of object 92 from concave mirror 94 should be known, and the focal length of concave mirror 94 can also be inferred from the image distance and the object distance. In other words, the focal length of the concave mirror 94 is related to the distance difference (preset distance) between the second distance D2 and the first distance D1, which also means the light-emitting angle θ of each micro-light-emitting assembly 12₀It is also possible to correlate the distance difference (preset distance) between the second distance D2 and the first distance D1.

It should be noted that the shape of the substrate 10 is not limited in this embodiment, and although the substrate 10 is illustrated as being planar in fig. 3A, the substrate 10 may also be a flexible substrate and may have a curved shape. Referring to fig. 3A and fig. 4A together, fig. 4A is a schematic view illustrating a display panel according to another embodiment of the present application. Similar to the embodiment of fig. 3, the display panel 2 of fig. 4A may also include a substrate 20 and a plurality of micro light emitting devices 22a to 22e, and the observer's eyes 90 may also see the first visual image 24 while viewing the display panel 2 from the light emitting side a. However, the substrate 20 is formed by a curved surface such that the light L emitted from the micro light-emitting devices 22 a-22 e at different positions has a predetermined offset angle θ with the light-emitting side a₀. It is well understood that because the display panel 2 is also intended to replace or mimic the concave mirror 94 of FIG. 1, the emitted light L should enter the viewer's eye 90 from the same angle, whether it be the micro-light emitting elements 12 a-12 e or the micro-light emitting elements 22 a-22 e, with the only difference being the first offset angle θ₀Is provided by even components.

It should be understood by those skilled in the art that since the substrate 10 is illustrated in fig. 3A as being planar, the first offset angle θ is equivalent to₀Is completely provided by the micro light-emitting components 12 a-12 e, so that the light-emitting angle of the micro light-emitting components 12 a-12 e is the first offset angle theta₀. In contrast, since the substrate 20 illustrated in fig. 4A is curved, the first offset angle θ₀May be provided by the substrate 20 and the micro light-emitting elements 22 a-22 e together. For example, the micro light-emitting devices 22 a-22 e can have the same light-emitting angle, such as the light emitted perpendicularly from the top surfaces 220 a-220 e, as long as the curvature of the substrate 20 at the corresponding position is the first offset angle θ₀Then, the included angle between the light L emitted from the micro light-emitting devices 22 a-22 e disposed at that position and the light-emitting side A can be the first offset angle θ₀。

To illustrate how the micro light-emitting elements 22 a-22 e emit light L at different angles, please refer to fig. 4A and 4B, in which fig. 4B is a partially enlarged view of the display panel according to fig. 4AIntention is. As shown, although the micro light-emitting

elements

22a and 22b are not on the optical axis aligned with the center of the substrate 20 (or the center of the display area) as in the previous embodiment, as long as the substrate 20 has been set with the correct curvature (e.g., the curvature is the first offset angle θ)₀) The

micro-lighting assemblies

22a and 22b themselves may not need to be tilted, but may be capable of projecting light to the viewer's eye 90. In one example, since the micro light emitting device 22a does not have to be tilted, the circuit pads of the anode and cathode of the micro light emitting device 22a can be connected to the substrate 20 through two bumps 222a with the same height. For example, as long as the micro light-emitting device 22a is placed at the correct position on the substrate 20, the light L emitted from the top surface 220a perpendicularly outward can be projected to the corresponding focal position in the eye 90 of the viewer. Assuming that the optical axis passing through the center of the substrate 20 is aligned with the eye 90 of the observer, the present embodiment can further set a plane perpendicular to the optical axis as the reference plane ref. As in the previous embodiment, the top surface 220a of the micro-light emitting device 22a and the reference surface ref form an included angle θ₁(first included angle), and there is another included angle θ between the top surface 220b of the micro-light emitting device 22b and the reference surface ref₂(second angle). Similarly, the included angle θ is formed by the micro-light emitting elements 22b being closer to the optical axis of the center of the substrate 20 (or the center of the display area) than the micro-light emitting elements 22a₂Will be less than the included angle theta₁I.e., the top surface 220b is less inclined.

It should be noted that, in the example shown in fig. 4A, the substrate 20 may be a flexible substrate, so that the curvature of the substrate 20 may be varied. In the example shown in fig. 3A, after the micro light-emitting devices 12a to 12e are connected to the substrate 10, the light-emitting angle (the first offset angle θ) of each position in the display panel 1 is different₀) I.e. is fixed. Fig. 4A shows an example in which the light-emitting angle (the first offset angle θ) of each position in the display panel 2₀) May vary with the curvature of the substrate 20, for example, it may be possible for the substrate 20 to adjust for different curvatures based on the viewing conditions of the viewer's eye 90. In practice, the curvature of the substrate 20 can be achieved by bending the substrate manually or mechanically20, the present embodiment is not limited thereto.

Of course, the display panel 1 may be mounted on a head-mounted device as the

display panel

1 or 2. For example, referring to fig. 3A and fig. 5 together, fig. 5 is a schematic view illustrating a head-mounted device according to an embodiment of the present application, taking the display panel 1 of fig. 3A as an example. As shown in the figure, the head-mounted device 3 includes a first display panel 30a and a second display panel 30b, the first display panel 30a and the second display panel 30b may be the same, and the first display panel 30a and the second display panel 30b may be both the same as the display panel 1 in the embodiment of fig. 3A. For example, the first display panel 30a and the second display panel 30b respectively have a substrate and a micro light emitting device, and the structure and function of the first display panel 30a and the second display panel 30b are not repeated herein in this embodiment. In the example of fig. 5, the first display panel 30a may have a first display area 300a defined therein, and the first display area 300a may have a center point 302 a. Similarly, the second display panel 30b may have a second display area 300b defined therein, and the second display area 300b may have a center point 302 b. It should be noted that the first display area 300a of the present embodiment is only a portion of the maximum display area (the area where the micro light emitting devices are disposed) of the first display panel 30a, that is, the area of the first display panel 30a that can actually display the image is larger than the area of the first display area 300 a. Similarly, the second display area 300b is only a part of the maximum display area of the second display panel 30 b. Advantageously, the first display area 300a and the second display area 300b of the present embodiment may be adjusted according to the interval between the eyes of the observer.

In one example, the observer may set the interval between the eyes before wearing the head-mounted device 3. For example, the separation of the eyes may refer to the pupillary distance D3 of left eye 90a and right eye 90 b. Of course, the head-mounted device 3 may also be provided with a camera for detecting the distance between the two eyes of the observer, and the embodiment does not limit the means for obtaining the distance between the two eyes of the observer. In practice, to provide a better view for the viewer, the center point 302a of the first display area 300a may be aligned with the pupil position of the left eye 90a, and the center point 302b of the second display area 300b may be aligned with the pupil position of the right eye 90 b. That is, the separation distance D4 between center point 302a and center point 302b may be correlated to the pupillary distance D3 for left eye 90a and right eye 90 b.

In a practical example, if another observer has a narrower or wider pupillary distance, the first display area 300a and the second display area 300b may also be inwardly concentrated or outwardly dispersed. Referring to fig. 5 and fig. 6 together, fig. 6 is a schematic diagram illustrating different pupil positions corresponding to the head-mounted device of fig. 5. As shown in the figure, assuming that the pupillary distance D5 of the left eye 90c and the right eye 90D of another observer is narrowed, the first display panel 30a and the second display panel 30b in the head-mounted device 3 will reset the display regions, for example, to be the new first display region 300c and the new second display region 300D. Of course, since the positions of the first display area 300c and the second display area 300d are different from the positions of the first display area 300a and the second display area 300b, the first display area 300c and the second display area 300d have new center points 302c and 302d, respectively. Likewise, the separation distance D6 of the new center point 302c and the center point 302D may be correlated to the pupillary distance D5 of the left eye 90c and the right eye 90D. In other words, the head-mounted device 3 of the present embodiment may set the display area according to the distance between the two eyes of different observers, in addition to the imaging of the display panel simulating the concave mirror, so as to achieve better viewing effect.

In other words, the head-mounted device 3 can also be the display panel 2 of fig. 4A as an example, please refer to fig. 4A and fig. 5 together, and fig. 5 shows that the head-mounted device 3 includes a first display panel 30a and a second display panel 30b, the first display panel 30a and the second display panel 30b can be the same, and the first display panel 30a and the second display panel 30b can be both the same as the display panel 2 in the embodiment of fig. 4A.

The above-described embodiments and/or implementations are only illustrative of the preferred embodiments and/or implementations for implementing the technology of the present application, and are not intended to limit the implementations of the technology of the present application in any way, and those skilled in the art can make many changes or modifications to the equivalent embodiments without departing from the scope of the technology disclosed in the present application, but should still be considered as the technology or implementations substantially the same as the present application.

Claims

1. A display panel, comprising:

a substrate;

the first micro light-emitting component is arranged at a first position of the substrate, a first top surface is defined on the first micro light-emitting component, and the first micro light-emitting component emits light from the first top surface; and

a second micro light-emitting component arranged at a second position of the substrate, wherein the second micro light-emitting component is defined with a second top surface and emits light from the second top surface;

the first top surface has a first included angle with respect to a reference surface, the second top surface has a second included angle with respect to the reference surface, and the first included angle is different from the second included angle.

2. The display panel of claim 1, wherein the reference plane is a virtual plane perpendicular to a normal direction of the substrate.

3. The display panel of claim 1, wherein when the substrate is planar and the first position is at an edge of the substrate, the first micro light emitting device is connected to the substrate by two first bumps, and the two first bumps are not of equal height.

4. The display panel of claim 3, wherein when the second position is at the center of the substrate, the second micro light emitting device is connected to the substrate by two second bumps, and the two second bumps have the same height.

5. The display panel of claim 1, wherein when the first position and the second position are respectively located on a concave surface of the substrate, the first micro light-emitting device is connected to the substrate by two first bumps, the second micro light-emitting device is connected to the substrate by two second bumps, and the two first bumps and the two second bumps have the same height.

6. The display panel of claim 5, wherein the substrate is a flexible substrate and has the inner concave surface with adjustable curvature.

7. The display panel of claim 1, wherein the substrate defines a first display region, the first micro light-emitting device and the second micro light-emitting device are disposed in the first display region, and a center point of the first display region is aligned with a pupil of a first eye of an observer.

8. A head-mounted device, comprising:

a first display panel comprising:

a first substrate defining a first display region; and

the first micro light-emitting components are arranged on the first substrate, emit light towards a light-emitting side and are used for projecting a first picture to a first eye of an observer;

wherein the light emitted by each of the first micro light-emitting assemblies has a first offset angle relative to the light-emitting side, and the first offset angle is associated with the position of each of the first micro light-emitting assemblies in the first display region;

wherein the center point of the first display area is aligned with the pupil position of the first eye.

9. The head-mounted device of claim 8, wherein the first frame has a first size in the first display area, and when the first eye of the observer observes the first frame at the light-emitting side, the first frame visually corresponds to a second size, and the second size is larger than the first size.

10. The head-mounted device of claim 8, wherein the substrate is a first distance from the viewing surface, and when the first eye of the observer observes the first image at the light-emitting side, the first image is visually a second distance from the viewing surface, the second distance being greater than the first distance.

11. The head-mounted device of claim 8, further comprising:

a second display panel comprising:

a second substrate defining a second display region; and

a plurality of second micro light-emitting components arranged on the second substrate, wherein the second micro light-emitting components emit light towards the light-emitting side and are used for projecting a second picture to a second eye of the observer;

wherein the light emitted by each of the second micro light-emitting elements has a second offset angle with respect to the light-emitting side, the second offset angle being associated with the position of each of the second micro light-emitting elements in the second display region;

the center point of the second display area is aligned with the pupil position of the second eye, and a center point distance is formed between the center point of the first display area and the center point of the second display area, wherein the center point distance is related to the distance between the pupil positions of the first eye and the second eye.