WO2019000194A1 - Display module, and head-mounted electronic apparatus - Google Patents

Abstract

Disclosed is a display module (100), comprising a lens (12), a bracket (11), a display screen (50) and an adjustment module (20). The display screen (50) is arranged on the bracket (11), and the bracket (11) is located between the lens (12) and the display screen (50). The adjustment module (20) comprises an elastic member (22), a drive member (24), a coil (26) and a housing (28), wherein the drive member (24) is built in the housing (28) and is fixedly connected to the lens (12), and the drive member (24) is made of an armature or soft iron; the coil (26) is wound outside the housing (28); the elastic member (22) is accommodated in the housing (28) and is sheathed on one end of the drive member (24), and is electrically abutted between an inner surface of the housing (28) and the drive member (24); when the coil (26) is energized, the coil drives the drive member (24) to enable the drive member (24) to drive the lens (12) to move relative to the display screen (50); and the elastic member (22) provides an elastic restoring force by means of which the lens (12) returns to an initial position before the movement relative to the display screen (50).

Description

Display module and head mounted electronic device Technical field

The present invention relates to the field of virtual reality technologies, and in particular, to a display module and a head mounted electronic device.

Background technique

In the related art, the virtual reality electronic device includes a lens and a bracket, and a display screen is mounted on the bracket. The adjustment of the spacing between the lens and the display screen is generally completed by a mechanical adjustment structure, and the user generally can only use the finger to rotate and set on the virtual reality electronic device. An external adjustment knob adjusts the distance of the virtual reality electronic device for the purpose of clearly viewing the content displayed on the display. Generally, the mechanical adjustment structure of such virtual reality electronic devices is relatively complicated.

Summary of the invention

Embodiments of the present invention provide a display module and a head mounted electronic device.

A display module includes a lens, a bracket, a display screen, and an adjustment module, wherein the display screen is disposed on the bracket, and the bracket is located between the lens and the display screen;

The adjustment module includes an elastic member, a driving member, a coil and a housing, the driving member is built in the housing and fixedly connected to the lens, and the driving member is made of an armature or soft iron, and the coil is Wrapped around the housing, the elastic member is received in the housing and sleeved on one end of the driving member, and elastically abuts against the inner surface of the housing and the driving member Driving the driving member when the coil is energized to cause the driving member to move the lens relative to the display screen, the elastic member providing an initial return of the lens to before moving relative to the display screen The elastic restoring force of the position.

A head mounted electronic device according to an embodiment of the invention includes the above display module.

The display module of the embodiment of the invention utilizes a magnetic field driving force generated by a coil, a driving member and an elastic member The interaction between the lens drives the lens to move back and forth relative to the display screen to adjust the diopter of the display module.

The additional aspects and advantages of the invention will be set forth in part in the description which follows.

DRAWINGS

The above and/or additional aspects and advantages of the present invention will become apparent and readily understood from

1 is a perspective view of a display module in accordance with an embodiment of the present invention.

2 is a schematic cross-sectional view of a display module in accordance with an embodiment of the present invention.

3 is another schematic cross-sectional view of a display module in accordance with an embodiment of the present invention.

4 is a block diagram of a display module according to an embodiment of the present invention.

Specific embodiment

The embodiments of the present invention are further described below in conjunction with the accompanying drawings. The same or similar reference numerals in the drawings denote the same or similar elements or elements having the same or similar functions.

In addition, the embodiments of the present invention described below in conjunction with the accompanying drawings are merely illustrative of the embodiments of the invention, and are not to be construed as limiting.

Referring to FIG. 1 to FIG. 4 , the display module 100 of the embodiment of the present invention includes a lens 12 , a bracket 11 , a display screen 50 , and an adjustment module 20 . The display screen 50 is disposed on the bracket 11 between the lens 12 and the display screen 50. The lens 12 includes, but is not limited to, at least one lens lens.

The adjustment module 20 includes an elastic member 22, a driving member 24, a coil 26, and a housing 28. The driving member 24 is built in the housing 28 and fixedly coupled to the lens 12. Specifically, the driving member 24 is fixed to the lens 12 by a screw lock. In the present embodiment, the driving member 24 is made of soft iron or an armature. The coil 26 is wound around the outside of the housing 28. The elastic member 22 is received in the housing 28 and sleeved on one end of the driving member 24 and elastically abuts between the inner surface of the housing 28 and the driving member 24. Coil 26 is energized The driving member 24 is driven to move the lens 12 relative to the display screen 50, and the elastic member 22 provides an elastic restoring force for the lens 12 to return to the initial position before the movement of the display screen 50. Specifically, the housing 28 is hollow and includes a first columnar body 281 and two second columnar bodies 283. The two second columnar bodies 283 are respectively connected to two sides of the first columnar body 281, and the elastic member 22 is located at the In the columnar body 281, one end abuts against the inner bottom surface of the first columnar body 281, and the other end abuts against the driving member 24. The driving member 24 includes a third columnar body 241 and two fourth columnar bodies 243. The two fourth columnar bodies 243 are respectively connected to opposite sides of the third columnar body 241, and the two fourth columnar bodies 243 are respectively provided with two Second columnar bodies 283. The other end of the elastic member 22 abuts against the surface of the third columnar body 241 close to the inner bottom surface of the first columnar body 281.

The display module 100 of the embodiment of the present invention uses the magnetic field driving force generated by the coil 26 and the interaction between the driving member 24 and the elastic member 22 to drive the lens 12 to move back and forth relative to the bracket 11 to adjust the diopter of the display module 100.

Specifically, when the diopter of the display module 100 needs to be adjusted, the coil 26 generates a magnetic field after being energized, and the driving member 24 is driven by the magnetic field to drive the lens 12 to move relative to the bracket 11 in the first direction a or the second direction b and compress the elasticity. Thus, the distance between the lens 12 and the display screen 50 can be increased or decreased. Accordingly, the diopter of the display module 100 can be increased or decreased according to the distance between the lens 12 and the display screen 50. Wherein, the driving member 24 moves in the first direction a or the second direction b in relation to the direction in which the coil 26 is energized. When the coil 26 is de-energized or the current is reduced and the restoring force of the elastic member 22 is greater than the magnetic field driving force, the driving member 24 will return to the initial position by the elastic restoring force of the elastic member 22.

Preferably, the lens of the lens 12 is an aspherical lens and is made of plastic.

As such, lens 12 has a higher magnification and a wider field of view than other types of lenses.

Specifically, the first direction a may be a forward adjustment such as a user's near vision, and the second direction b may be a reverse direction adjustment such as a user's far vision.

Specifically, in the embodiment of the present invention, the first direction a refers to the lens 12 away from the bracket 11 The direction, the second direction b refers to the direction in which the lens 12 is close to the bracket 11. It can be understood that in other embodiments, the first direction a may refer to the direction in which the lens 12 is close to the bracket 11 , and the second direction b may refer to the direction in which the lens 12 is away from the bracket 11 .

In the present embodiment, the elastic member 22 is a spring.

Thus, the elastic member 22 has a simple structure and is easy to install and disassemble. At the same time, the price of the elastic member 22 is low, the replacement cost is low, and the service life of the display module 100 can be effectively extended.

In the present embodiment, the housing 28 is made of plastic. As such, the mass of the housing 28 is small, which reduces the weight of the display module 100 and is more convenient for the user to wear.

In the present embodiment, the housing 28 is provided with a recess 284 in which the coil 26 is disposed.

As such, the recess 284 facilitates the winding of the coil 26, and the coil 26 can be stably disposed on the housing 28. At the same time, when the magnetic field generated by the coil 26 interacts with the magnetic field of the elastic portion 242, the recess 284 enables the coil 26 to remain stable without displacement.

Further, when the coil 26 is de-energized, the orthographic projection of the coil 26 on the magnetic portion 242 substantially falls on the magnetic portion 242. In this manner, the coil 26 is energized to generate a magnetic field to maximize the magnetic field driving force to the driving member 24.

In some embodiments, display module 100 also includes control device 30. Control device 30 is electrically coupled to coil 26 and is used to control the magnitude of the current in coil 26 to adjust the magnetic field driving force generated by coil 26.

In this manner, the control device 30 adjusts the magnitude of the magnetic field driving force by adjusting the magnitude of the current in the coil 26, thereby adjusting the combined force of the restoring force of the elastic member 22 and the magnetic field driving force, thereby realizing the adjustment of the distance between the lens 12 and the bracket 11. Thereby, the adjustment of the diopter of the lens 12 is achieved.

Specifically, when the control device 30 controls the current in the coil 26 to increase, the strength of the magnetic field generated by the coil 26 increases, and the driving force of the magnetic field received by the driving member 24 also increases accordingly, and the driving member 24 drives the lens 12 to the first direction a or The two directions b move and compress the elastic member 22 such that the distance between the lens 12 and the bracket 11 increases or decreases; when the control device 30 controls the current in the coil 26 to decrease, the magnetic field strength generated by the coil 26 decreases, and the driving member 24 The magnetic field driving force received is reduced, and the elastic member 22 The driving lens 12 is moved in a direction in which the first direction a or the second direction b is restored to the initial position, so that the distance between the lens 12 and the bracket 11 is restored to the original state.

In some embodiments, display module 100 also includes a slide sensor 40. Slide sensor 40 is coupled to control device 30 and produces an input signal. The control device 30 adjusts the magnitude of the current in the coil 26 based on the input signal generated by the sliding sensor 40.

As such, the user can control the control device 30 to adjust the distance between the lens 12 and the bracket 11 by operating the slide sensor 40. The sliding sensor 40 is simple in operation and quick in response, and can avoid the use of a mechanical structure such as a knob to adjust the lens 12, thereby simplifying the structure of the display module 100 and facilitating operation. At the same time, the sliding sensor 40 can also reduce the space occupied by the display module 100.

Specifically, when the user needs to adjust the distance between the lens 12 and the bracket 11, the finger can be placed on the sliding sensor 40 to slide on the sliding sensor 40, and the control device 30 can adjust the current in the coil 26 to adjust The distance between the lens 12 and the bracket 11 adjusts the diopter of the display module 100 to ensure that the user can clearly view the content displayed on the display screen 50 using the display module 100. For example, when the user's finger slides in one direction on the sliding sensor 40, the sliding sensor 40 generates a first input signal, and the control device 30 receives the first input signal and applies a predetermined amount of current to the coil 26 according to the first input signal. The driving member 24 is caused to drive the lens 12 to move in the first direction a.

When the user's finger slides on the sliding sensor 40 in the other direction, the sliding sensor 40 generates a second input signal, the control device 30 receives the second input signal, and controls the coil 26 to be powered down or reduce the current in the coil 26 according to the second input signal. The elastic member 22 is caused to drive the lens 12 to move in the second direction b.

In particular, diopter is generally directional. For example, when the lens 12 is moved in the first direction a, the diopter of the lens 12 is gradually increased (for a far-sighted user), and when the lens 12 is moved to the leftmost position, the diopter of the lens 12 is the largest. When the lens 12 moves from the leftmost position to the right in the second direction b, the diopter of the lens 12 becomes smaller, and during the process in which the lens 12 moves from the leftmost side to the rightmost side, the diopter of the lens 12 first becomes smaller and becomes larger, the lens is enlarged. When the 12 moves to the far right, the refraction of the lens 12 Maximum (for myopia users). That is to say, the magnitude of the diopter is related to the distance between the lens 12 and the display screen 50, and the lens 12 has a critical position. When the lens 12 is at the critical position, the diopter of the lens 12 is also a critical value. The further the lens 12 moves to a position farther from the critical position, the greater the diopter.

It should be noted that the above examples are merely illustrative of the manner in which the sliding sensor 40 operates and are not to be construed as limiting the invention.

In some embodiments, the sliding sensor 40 can be disposed on the housing 28 or at a location such as the housing of the electronic device to which the display module 100 is applied.

In some embodiments, the sliding sensor 40 is a flexible sensor.

In this way, the sliding sensor 40 has good flexibility and ductility, and the structure can be diversified, and can be set according to the structure of the display module 100 to detect the adjustment requirements of the user. At the same time, the sliding sensor 40 is not easily damaged by bending, which effectively extends the service life of the display module 100.

In some embodiments, control device 30 includes a storage unit 301, an acquisition unit 302, and an adjustment unit 303. The storage unit 301 is configured to store a correspondence between different input signals generated by the sliding sensor 40 based on different input gestures and a preset current magnitude. The obtaining unit 302 is configured to acquire a preset current size according to the input signal. The adjusting unit 303 is configured to adjust the magnitude of the current in the coil 26 according to the preset current magnitude.

In this way, the control device 30 can pre-store different gestures and input signals corresponding to the gestures and the preset current magnitude. When the user needs to adjust the parameters such as the diopter of the display module 100, the spacing between the lens 12 and the bracket 11 can be adjusted only by making a corresponding gesture on the sliding sensor 40. Easy to operate and quick to adjust.

Specifically, the preset current magnitude of the coil 26 has a corresponding relationship with the distance between the lens 12 and the bracket 11. By acquiring the preset current magnitude of the coil 26 by the input signal, the lens 12 and the bracket 11 can be adjusted to a desired state. distance.

Further, the display module 100 can include a human-machine interface, and the user can freely select through the human-machine interface. Store new gestures and corresponding distances.

As such, the design of the display module 100 is more in line with the usage habits of different users.

In certain embodiments, the drive member 24 includes a first stepped surface 246 located within the housing 28. The inner surface of the housing 28 is formed with a second stepped surface 282. The elastic member 22 elastically resists between the first stepped surface 246 and the second stepped surface 282.

Thus, during the movement of the driving member 24 in the first direction a, the elastic member 22 disposed between the first stepped surface 246 and the second stepped surface 282 is compressed, and an elastic restoring force is applied to the driving member 24 to cooperate with the magnetic field driving force. The lens 12 is allowed to rest and move relative to the bracket 11.

Specifically, a clearance fit is implemented between the drive member 24 and the housing 28.

In this way, the driving member 24 is smoothly moved in the housing 28, and the movement of the lens 12 is controlled to adjust the spacing between the lens 12 and the bracket 11.

In some embodiments, a lens group (not shown) is disposed within the holder 11, and the lens group and the lens 12 are coaxially disposed.

Thus, after the image displayed by the display screen 50 is propagated through the lens group and the lens 12, clear imaging is formed on the retina of the human eye, thereby improving the user's experience in using the display module 100.

Specifically, the coaxial arrangement of the lens 12 and the lens group means that the optical axes of the lens 12 and the lens group are on the same straight line.

In some embodiments, the lens group includes one or more lenses. In this way, the lens group can adjust the number of lenses according to different structures of the display module 100, thereby achieving the effect of clearly imaging the image on the display screen 50 on the human eye.

In some embodiments, the adjustment module 20 includes a mount 21. The lens 12 is fixed to the holder 21. The holder 21 is coupled to the driving member 24. The holder 21 is provided with a positioning rail 212. The bracket 11 is at least partially received in the positioning rail 212.

Thus, the position of the lens 12 can be effectively adjusted when the driving member 24 moves. The bracket 11 is located in the positioning rail 212 such that when the position of the lens 12 is changed, the positions of the lens 12 and the bracket 11 are substantially fixed, thereby ensuring the quality of the screen imaged in the user's retina.

Specifically, a clearance fit is implemented between the bracket 11 and the positioning rail 212.

In addition, when the bracket 11 includes the lens group, the bracket 11 is located in the positioning rail 212 such that the lens 12 and the lens group are always coaxial when the position of the lens 12 is changed, thereby further ensuring the quality of the display screen 50 in the user's retina. .

In one example, the holder 21 and the drive member 24 are connected by bolts 23. A spring pad 232 is disposed on the bolt 23. Thus, the spring pad 232 prevents loosening between the driving member 24 and the fixing frame 21, and ensures the stability of the connection between the fixing frame 21 and the driving member 24.

In some embodiments, both the lens 12 and the lens group include a convex lens.

In this manner, the display module 100 can achieve an enlarged image of the image on the display screen 50, so that the user can obtain a better immersion when viewing the image on the display screen 50, thereby improving the experience of the display module 100.

In particular, in some embodiments, the lens 12, that is, the lens that is adjacent to the user's eye, includes a lens that is biconvex. The lens group is also the lens near the display screen 50, including a lens with a single-sided raised structure.

The head mounted electronic device of the embodiment of the invention includes the display module 100 of any of the above embodiments.

As such, the head-mounted electronic device can use the magnetic field driving force generated by the coil 26 and the elastic member 22 to drive the lens 12 to move back and forth relative to the bracket 11, thereby simplifying the structure of the adjustment module 20.

Specifically, the head mounted electronic device includes an electronic device such as a virtual reality device.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " After, "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inside", "Outside", "Clockwise", "Counterclockwise", "Axial", The orientation or positional relationship of the "radial", "circumferential" and the like is based on the orientation or positional relationship shown in the drawings, and is merely for the convenience of describing the present invention and the simplified description, and does not indicate or imply the indicated device or component. It must be constructed and operated in a particular orientation, and is not to be construed as limiting the invention.

Moreover, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, features defining "first" and "second" may include one or more of the features either explicitly or implicitly. In the invention In the description, the meaning of "a plurality" is two or more unless specifically and specifically defined.

In the present invention, the terms "installation", "connected", "connected", "fixed" and the like shall be understood broadly, and may be either a fixed connection or a detachable connection, unless explicitly stated and defined otherwise. , or integrated; can be mechanical connection, or can be electrical connection; can be directly connected, or can be indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction of two elements. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood on a case-by-case basis.

In the present invention, the first feature "on" or "under" the second feature may be a direct contact of the first and second features, or the first and second features may be indirectly through an intermediate medium, unless otherwise explicitly stated and defined. contact. Moreover, the first feature "above", "above" and "above" the second feature may be that the first feature is directly above or above the second feature, or merely that the first feature level is higher than the second feature. The first feature "below", "below" and "below" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely that the first feature level is less than the second feature.

In the description of the present specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" and the like means a specific feature described in connection with the embodiment or example. A structure, material or feature is included in at least one embodiment or example of the invention. In the present specification, the schematic representation of the above terms is not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. In addition, various embodiments or examples described in the specification and features of various embodiments or examples may be combined and combined without departing from the scope of the invention.

Although the embodiments of the present invention have been shown and described, it is understood that the above-described embodiments are illustrative and are not to be construed as limiting the scope of the invention. The embodiments are subject to variations, modifications, substitutions and variations.

Claims (10)

A display module, comprising: a lens, a bracket, a display screen and an adjustment module, the display screen being disposed on the bracket, the bracket being located between the lens and the display screen; The adjustment module includes an elastic member, a driving member, a coil and a housing, the driving member is built in the housing and fixedly connected to the lens, and the driving member is made of an armature or soft iron, and the coil is Wrapped around the housing, the elastic member is received in the housing and sleeved on one end of the driving member, and elastically abuts against the inner surface of the housing and the driving member Driving the driving member when the coil is energized to cause the driving member to move the lens relative to the display screen, the elastic member providing an initial return of the lens to before moving relative to the display screen The elastic restoring force of the position. The display module according to claim 1, wherein said display module further comprises control means, said control means electrically connecting said coil and for controlling a magnitude of current in said coil to adjust said coil generation The magnetic field driving force. The display module as claimed in claim 2, wherein the display module further comprises a sliding sensor, the sliding sensor is connected to the control device and generates an input signal, and the control device is generated according to the sliding sensor. The input signal adjusts the magnitude of the current in the coil. The display module of claim 3 wherein said sliding sensor is a flexible sensor. The display module according to claim 3, wherein the control device comprises a storage unit, an acquisition unit and an adjustment unit, The storage unit is configured to store a correspondence between different input signals generated by the sliding sensor based on different input gestures and a preset current magnitude, The obtaining unit is configured to acquire the preset current size according to the input signal, The adjusting unit is configured to adjust a current amount in the coil according to the preset current magnitude. The display module of claim 1 wherein said drive member comprises a first stepped surface in the housing, an inner surface of the housing is formed with a second stepped surface, and the elastic member elastically abuts between the first stepped surface and the second stepped surface. The display module according to claim 6, wherein a lens group is disposed in the bracket, and the lens group and the lens are coaxially disposed. The display module as claimed in claim 1 , wherein the adjustment module comprises a fixing frame, the lens is fixed on the fixing frame, the fixing frame is connected with the driving component, and the fixing erection is There is a positioning track, and the bracket is at least partially received in the positioning track. The display module of claim 7, wherein the lens and the lens group each comprise a convex lens. A head mounted electronic device, comprising the display module according to any one of claims 1-9.

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