Micro light engine and electronic device thereof

Abstract

A miniature light engine and electronic device are disclosed. The miniature light engine includes a lens assembly (10) and at least one miniature display panel (20). The lens assembly (10) includes a lens housing (101) and a first light guide channel (103) disposed in the lens housing (101). The first light guide channel (103) includes a projection end (102). The miniature display panel (20) includes a light-emitting chip (203). The lens housing (101) is connected to the miniature display panel (20) on at least one of the opposite side and adjacent side of the projection end (102). Light emitted by the light-emitting chip (203) enters the first light guide channel (103) and propagates through the projection end (102). This enables the miniature display device to achieve small size, high imaging quality, and portability in near-eye display devices and micro-projectors.

Description

Micro light engine and its electronic equipment Technical Field

[0001] The present invention relates to the field of micro-display technology, and in particular to a micro-light engine and electronic equipment thereof. Background Art

[0002] Inorganic micro-light emitting diodes are also known as "micro-LEDs" or MicroLEDs. Compared to traditional organic LEDs (OLEDs) or liquid crystal display (LCD)-based microdisplays, MicroLEDs have higher wall plug efficiency, higher brightness, lower efficiency droop, better thermal stability, longer life, faster response rate, higher resolution, wider color gamut, and higher contrast.

[0003] The emergence of micro-LED technology has made miniaturized, high-resolution projection displays possible, and is gaining increasing attention in near-eye display (AR / VR) and micro-projection applications. With the continuous development of projection display technology, market demand for products with smaller size, higher image quality, and greater portability is increasing.

[0004] Summary of the Invention

[0005] The purpose of the present invention is to provide a micro light engine and its electronic equipment, which are used in products such as near-eye display devices and micro projectors to achieve the goals of small size, high imaging quality, and easy portability. They can dissipate heat to avoid excessive temperature affecting the effect, provide better protection, ensure quality and increase service life.

[0006] To achieve the above objectives, the present invention discloses a micro light engine, which is characterized by comprising:

[0007] a lens assembly, the lens assembly comprising a lens housing and a first light guide channel disposed in the lens housing, the first light guide channel comprising a projection end; and

[0008] at least one micro display panel, wherein the micro display panel includes a light-emitting chip;

[0009] The lens housing is connected to the micro display panel on at least one of the opposite side and the adjacent side of the projection end, and the light emitted by the light-emitting chip enters the first light guide channel and propagates through the projection end.

[0010] Wherein, it further includes a lens base; the lens base is connected to the lens housing and the micro display panel, and the lens base and the micro display panel are both arranged on opposite sides of the projection end.

[0011] wherein the micro display panel is disposed on at least one of the opposite side and the adjacent side of the lens housing; and

[0012] The lens base includes a first light guide component and a first light shielding component, wherein the first light shielding component is covered on the outer surface of the first light guide component;

[0013] The first light guide channel and the light emitting chip are respectively arranged corresponding to the first light guide component.

[0014] Wherein, the micro light engine further comprises a display base;

[0015] The display base is disposed between the lens base and the micro display panel, and the display base includes a second light guide component and a second light shielding component, the second light shielding component is coated on the outer surface of the second light guide component, and the first light guide component and the light emitting chip are respectively disposed corresponding to the second light guide component; or,

[0016] The display base is connected to the micro display panel, and the micro display panel is arranged between the lens base and the display base.

[0017] 5. The micro light engine according to claim 2, wherein:

[0018] The micro light engine further includes a display base;

[0019] The display base is arranged on the opposite side of the lens housing, the lens base is arranged between the display base and the lens housing, and the micro display panel is arranged on the adjacent side of the lens base;

[0020] The lens base includes a first light guide component and a first light shielding component, wherein the first light shielding component is covered on the outer surface of the first light guide component; and

[0021] The display base includes a second light guide component and a second light shielding component, and the second light shielding component is covered on the outer surface of the second light guide component;

[0022] The first light guide component and the light emitting chip are respectively arranged corresponding to the second light guide component.

[0023] The micro display panel further includes a circuit board and a reinforcement plate, wherein the circuit board includes a flexible circuit end, the flexible circuit end and the light-emitting chip are arranged on the reinforcement plate, and the circuit board is electrically connected to the light-emitting chip.

[0024] A chip protection layer is provided on a side of the light-emitting chip away from the reinforcing plate, wherein the chip protection layer is provided with a light-transmitting area, and the light-transmitting area is arranged corresponding to a light-emitting area of ​​the light-emitting chip.

[0025] Wherein, the circuit board further includes a hard circuit end; the hard circuit end is electrically connected to the flexible circuit end, and a connector is provided on one side of the hard circuit end, and an electronic component and a shielding cover with a cavity are provided on the other side, wherein the electronic component is arranged in the shielding cover.

[0026] Wherein, the lens assembly further comprises at least one collimating lens and at least one light converging lens; and

[0027] The first light guide channel further includes a light entrance end, the light entrance end being close to the lens base;

[0028] One of the collimating lenses is arranged at the light incident end, and one of the light converging lenses is arranged at the projection end.

[0029] Wherein, the lens base includes a flat portion and a raised portion, the raised portion is matched with the lens housing, and the raised portion is corresponding to the first light guide channel.

[0030] The flat portion and the raised portion are integrally formed or independently provided.

[0031] Wherein, the light emitted by the micro display panel is one of monochromatic light and colored light.

[0032] The light-emitting chip is one of a Microled chip, a Miniled chip and an Oled chip.

[0033] Also disclosed is an electronic device comprising the micro light engine described above.

[0034] The beneficial effects of the present invention are as follows:

[0035] (1) The micro light engine of the present invention is formed by combining a micro display panel with a lens assembly, and can be applied to products such as near-eye display devices and micro projectors to achieve the goals of small size, high imaging quality, and portability.

[0036] (2) The micro display panel in the present invention is arranged on the opposite side of the lens housing, and the light emitted by the light-emitting chip does not need to be changed in the propagation direction by means of a prism or the like, which can reduce the volume and weight of the present invention.

[0037] (3) The reinforcing plate provided in the present invention can support the flexible circuit end and the light-emitting chip of the circuit board on the one hand, and can dissipate heat on the other hand to prevent the micro display panel from being overheated when in working state and affecting the display effect of the micro display panel.

[0038] (4) The chip protection layer provided in the present invention can protect the light-emitting area of ​​the light-emitting chip and prevent the light-emitting area from being damaged, thereby ensuring the quality of the light emitted by the light-emitting chip and improving the service life of the micro display panel.

[0039] (5) The metal lead of the present invention is provided with a lead protection layer, which can prevent the metal lead from breaking and affecting the signal transmission of the light-emitting chip. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] The above and other objects, features and advantages of the present disclosure will become more apparent through a more detailed description of exemplary embodiments of the present disclosure with reference to the accompanying drawings, wherein like reference numerals generally represent like components in the exemplary embodiments of the present disclosure.

[0041] FIG1 is a perspective view of a micro light engine according to a first embodiment of the present invention;

[0042] FIG2 is a right side view of a micro light engine according to a second embodiment of the present invention;

[0043] FIG3 is a perspective view of a micro light engine according to a third embodiment of the present invention;

[0044] FIG4 is a right side view of a micro light engine according to a fourth embodiment of the present invention;

[0045] FIG5 is a light path diagram of a micro light engine according to a third embodiment of the present invention;

[0046] FIG6 is a light path diagram of a micro light engine according to a fourth embodiment of the present invention;

[0047] FIG. 7 is a perspective view of a micro display panel according to the present invention. DETAILED DESCRIPTION

[0048] The preferred embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although preferred embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments described herein. Rather, these embodiments are provided to make the present disclosure more thorough and complete, and to fully convey the scope of the present disclosure to those skilled in the art.

[0049] Some embodiments of the present invention provide a micro light engine.

[0050] Referring to Figure 1, Figure 1 is a perspective view of a micro light engine according to a first embodiment of the present invention. As shown in Figure 1, the micro light engine provided by the present invention includes a lens assembly 10 and a micro display panel 20. In some embodiments, the micro light engine is provided with a single micro display panel 20, which can be a monochrome micro display panel emitting monochrome light, or a color micro display panel emitting colored light. In other embodiments, the micro light engine is provided with multiple micro display panels 20, each of which can emit monochrome light, each of which can emit colored light by combining colors, or each of which can emit colored light. The lens assembly 10 includes a lens housing 101 and a first light guide channel 103 (see the first light guide channel 103 in Figure 5) disposed therein. The first light guide channel 103 includes a projection end 102. The micro display panel 20 includes a light emitting chip 203 (see the light emitting chip 203 in Figure 7). In some embodiments, the light emitting chip 203 is a MicroLED chip. In other embodiments, the light emitting chip 203 is a MiniLED chip or an Oled chip. The lens housing 101 is connected to a microdisplay panel 20 on at least one of the sides opposite and adjacent to the projection end 102. Light emitted by the light-emitting chip 203 enters the first light guiding channel 103 and propagates through the projection end 102. In some embodiments, the microdisplay panel 20 is located on the side opposite the projection end 102, and the light-emitting chip 203 is positioned corresponding to the first light guiding channel 103. In other embodiments, the microdisplay panel 20 is located adjacent to the projection end 102, one or more microdisplay panels 20 are positioned on the sidewall of the lens housing 101, and a light-transmitting window is defined in the lens housing 101 at a position corresponding to the light-emitting chip 203. A prism 403 (see prism 403 in FIG. 6 ), such as a triangular prism, is positioned in the first light guiding channel 103 and is positioned in the propagation path of the light emitted by the light-emitting chip 203. Light emitted by the light-emitting chip 203 passes through the light-transmitting window and the prism 403 into the first light guiding channel 103, and is emitted from the projection end 102.

[0051] As shown in FIG1 , the micro light engine further includes a lens base 30. The lens base 30 connects the lens housing 101 and the micro display panel 20, and the lens base 30 and the micro display panel 20 are both disposed on opposite sides of the projection end 102. In some embodiments, the micro display panel 20 is disposed between the lens base 30 and the lens housing 101. In other embodiments, the lens base 30 is disposed between the micro display panel 20 and the lens housing 101. The lens base 30 includes a flat portion 301 and a raised portion 302. In some embodiments, the flat portion 301 and the raised portion 302 are integrally formed. In other embodiments, the flat portion 301 and the raised portion 302 are separately provided. The raised portion 302 is configured to mate with the lens housing 101. In some embodiments, the lens housing 101 and the lens base 30 are fixedly connected by bolts or other means. In other embodiments, the lens housing 101 and the lens base 30 are detachably connected by snap fasteners or other means. In yet other embodiments, the micro display panel 20 and the lens base 30 are fixedly connected by adhesive or other means. The raised portion 302 is disposed correspondingly to the first light guide channel 103. The lens base 30 provided in the present invention is used to support the lens assembly 10. Compared to when the micro-display panel 20 is disposed adjacent to the projection end 102, when the micro-display panel 20 is disposed on the opposite side of the projection end 102, the prism 403 is not required to change the propagation direction of light, thereby reducing the size and weight of the present invention and better meeting market demand.

[0052] As shown in FIG1 , the microdisplay panel 20 is disposed on the opposite side of the lens housing 101. A lens base 30 is connected to the lens housing 101 on one side, and is connected to the microdisplay panel 20 on the opposite side of the lens housing 101. The lens base 30 is disposed between the lens housing 101 and the microdisplay panel 20. The lens base 30 includes a first light guide component 304 (see first light guide component 304 in FIG5 ) and a first light shielding component 303. The first light shielding component 303 covers the outer surface of the first light guide component 304. The first light guide channel 103 and the light-emitting chip 203 are respectively disposed corresponding to the first light guide component 304. In some embodiments, the first light guide component 304 is a through hole disposed in the lens base 30. One end of the through hole is connected to the first light guide channel 103, and the other end is connected to the light-emitting chip 203. The first light shielding component 303 is a light shielding housing. The boundary of the first light-guiding channel 103 is located outside the boundary of the end side of the connected through-hole, or coincides with the boundary of the end side of the connected through-hole. The boundary of the end side of the through-hole connected to the light-emitting chip 203 is located outside the boundary of the light-emitting area of ​​the light-emitting chip 203, or coincides with the boundary of the light-emitting area of ​​the light-emitting chip 203. This prevents light leakage when light emitted by the light-emitting chip 203 enters the through-hole, and when light in the through-hole enters the first light-guiding channel 103. In some embodiments, one end of the through-hole is at a right angle to the light-emitting chip 203, and the other end is at a right angle to the lens housing 101. In other embodiments, one end of the through-hole is at an acute or obtuse angle to the light-emitting chip 203, or the other end of the through-hole is at an acute or obtuse angle to the lens housing 101. A prism 403, such as a triangular prism, is provided in the through-hole, and light emitted by the light-emitting chip 203 passes through the prism 403 and enters the first light-guiding channel 103. In other embodiments, the first light guide component 304 is made of glass, transparent resin, etc. The first light guide component 304 is disposed in a light-shielding housing.

[0053] As shown in Figure 1 , the micro display panel 20 further includes a circuit board 201 and a reinforcement plate 202. The reinforcement plate 202 has a single-layer or multi-layer structure. In some embodiments, the reinforcement plate 202 is made of invar steel. In other embodiments, the reinforcement plate 202 is made of other materials that provide support and heat dissipation, such as aluminum or ceramic. Referring to Figure 7 , which is a perspective view of the micro display panel 20 of the present invention, the circuit board 201 includes a flexible circuit end 2014. The flexible circuit end 2014 and the light-emitting chip 203 are disposed on the reinforcement plate 202. In some embodiments, the flexible circuit end 2014 is disposed on a portion of one side of the reinforcement plate 202, while the light-emitting chip 203 is secured to another portion of the reinforcement plate 202 using an adhesive, such as DAF adhesive. The flexible circuit end 2014 and the light-emitting chip 203 are disposed on the same side of the reinforcement plate 202, and there is no overlap between the flexible circuit end 2014 and the light-emitting chip 203. In other embodiments, the entire light-emitting chip 203 is disposed on the flexible circuit end 2014, which is disposed on the reinforcing plate 202, with the flexible circuit end 2014 positioned between the light-emitting chip 203 and the reinforcing plate 202. In yet other embodiments, the light-emitting chip 203 is partially disposed on the flexible circuit end 2014 and partially on the reinforcing plate 202, with the light-emitting chip 203 and the flexible circuit end 2014 partially overlapping. The reinforcing plate 202 provided in the present invention supports the flexible circuit end 2014 and the light-emitting chip 203 of the circuit board 201. The reinforcing plate 202 also dissipates heat, preventing the microdisplay panel 20 from overheating during operation and potentially affecting its display quality. The circuit board 201 is electrically connected to the light-emitting chip 203. Pins are provided on the flexible circuit end 2014 of the circuit board 201 and the light-emitting chip 203, respectively, and are connected by metal wires. In some embodiments, the metal wires are gold wires. In other embodiments, the metal leads are one, two, or three of silver, aluminum, and copper wires. A lead protection layer 205, such as epoxy resin, is provided on the metal leads. This layer covers the metal leads to prevent breakage that could affect signal transmission from the light-emitting chip 203.

[0054] As shown in FIG7 , a chip protection layer 204 is provided on the side of the light-emitting chip 203 away from the reinforcing plate 202. In some embodiments, the chip protection layer 204 is made of glass. In other embodiments, the chip protection layer 204 is made of a light-transmitting material such as a transparent resin. The chip protection layer 204 is provided with a light-transmitting area 2041, and the light-emitting chip 203 is provided with a light-emitting area, and the light-transmitting area 2041 is provided corresponding to the light-emitting area. Light emitted from the light-emitting area is transmitted through the light-transmitting area 2041. The chip protection layer 204 provided in the present invention can protect the light-emitting area of ​​the light-emitting chip 203, prevent the light-emitting area from being damaged, and improve the service life of the micro display panel 20.

[0055] In some embodiments, the circuit board 201 is a rigid-flexible circuit board. The circuit board 201 further includes a rigid circuit end 2011. The rigid circuit end 2011 is electrically connected to the flexible circuit end 2014. A connector 2012 is provided on one side of the rigid circuit end 2011, and an electronic component and a shielding cover 2013 having a cavity are provided on the other side, wherein the electronic component is disposed within the shielding cover 2013. The connector 2012 and the reinforcement plate 202 are disposed on the same side of the circuit board 20. The connector 2012 is used to electrically connect to an external object. In some embodiments, the shielding cover 2013 is made of nickel silver. In other embodiments, the shielding cover 2013 is made of at least one of stainless steel, galvanized steel strip, and brass. The shielding cover 2013 provided in the present invention is used to protect the electronic components, preventing damage to the electronic components that could affect the transmission of electrical signals from the microdisplay panel 20. In some embodiments, the circuit board 201 is a flexible circuit board.

[0056] The lens assembly 10 further includes at least one collimating lens and at least one light converging lens. The first light guide channel 103 further includes a light input end, which is close to the lens base 30; one collimating lens is arranged at the light input end, and one light converging lens is arranged at the projection end 102. The lens assembly 10 further includes at least one light diverging lens. The light diverging lens is arranged between the projection end 102 and the light input end of the first light guide channel 103. The light converging lens is a convex lens, and the light diverging lens is a concave lens. In some embodiments, a collimating lens is provided at the light input end of the first light guide channel 103, and a light converging lens is provided at the projection end 102; and a light converging lens is provided between the light input end and the projection end 102. The light emitted by the light-emitting chip 203 is transmitted in sequence through the first light guide component 304, the light input end, the collimating lens, the light diverging lens, and the light converging lens to achieve the projection purpose.

[0057] Refer to Figure 2, which is a right side view of a micro light engine according to a second embodiment of the present invention. As shown in Figure 2, unlike the first embodiment, in the second embodiment, one side of the lens base 30 is connected to the lens housing 101. On the adjacent side of the lens housing 101, the lens base 30 is connected to the micro display panel 20. In some embodiments, the first light guide assembly 304 is a second light guide channel provided on the lens base 30. A prism 403 (see prism 403 in Figure 6), such as a triangular prism, is provided in the second light guide channel, and the prism 403 is positioned corresponding to the light-emitting chip 203. Light emitted by the light-emitting chip 203 passes through the corresponding prism 403 and enters the first light guide channel 103, where it is transmitted. In some embodiments, on the adjacent side of the lens housing 10, the lens base 30 is connected to a micro display panel 20. The second light guide channel includes a first section and a second section. The first section is connected to the first light guide channel, the second section is connected to the first section, and the second section is connected to the light-emitting chip 203. A prism 403 is positioned at the junction of the first and second sections. In other embodiments, the lens base 30 is connected to two micro display panels 20 on adjacent sides of the lens housing 101. The second light guide channel includes a first section, a second section, and a third section. The first section is connected to the first light guide channel 103, and the second and third sections are respectively connected to the first section. The second and third sections are each connected to a light-emitting chip 203.

[0058] The micro light engine further includes a display base 40 (refer to the display base 40 in Figures 5 and 6). In some embodiments, the display base 40 is disposed between the lens base 30 and the micro display panel 20. The display base 40 and the lens base 30 are fixedly connected by bolts or the like; or, they are detachably connected by snaps or the like. The micro display panel 20 and the display base 40 are fixedly connected by adhesives or the like. In some embodiments, the micro display panel 20 and the display base 40 are both disposed on adjacent sides of the lens base 30. In other embodiments, refer to Figure 3, which is a three-dimensional view of a micro light engine according to a third embodiment of the present invention. As shown in Figure 3, unlike the first embodiment described above, in the third embodiment, the micro display panel 20 is disposed on the opposite side of the lens base 30, and the display base 40 is disposed between the lens base 30 and the micro display panel 20. The display base 40 includes a second light guide component 402 (see second light guide component 402 in FIG5 ) and a second light shielding component 401. The second light shielding component 401 covers the outer surface of the second light guide component 402. The first light guide component 304 and the light-emitting chip 203 are respectively disposed in correspondence with the second light guide component 402. In some embodiments, the second light guide component 402 is a through-hole disposed in the display base 40. In some embodiments, one end of the through-hole is at a right angle to the microdisplay panel 20, and the other end of the through-hole is at a right angle to the lens base 30. Referring to FIG5 , light emitted by the light-emitting chip 203 enters the through-hole, passes through the first light guide component 304, and then continues through the collimating lens at the light entrance end of the first light guide channel 103, before being emitted at the projection end 102. In other embodiments, one end of the through-hole is at an acute or obtuse angle to the microdisplay panel 20, or the other end of the through-hole is at an acute or obtuse angle to the lens base 30. A prism 403, such as a triangular prism, is disposed in the through-hole. The light emitted by the light-emitting chip 203 passes through the prism 403, and then continues to propagate through the first light guide component 304 and the collimating lens at the light entrance end of the first light guide channel 103, and is emitted at the projection end 102. In other embodiments, the second light guide component 402 is glass, transparent resin, etc. The second light guide component 402 is disposed in a light-shielding housing. In other embodiments, the display base 40 is connected to the micro display panel 20, and the micro display panel 20 is disposed between the lens base 30 and the display base 40. The micro display panel 20 is disposed on the adjacent side of the lens housing 101, and the display base 40 is correspondingly disposed on the adjacent side of the lens housing 101. Alternatively, the micro display panel 20 is disposed on the opposite side of the lens housing 101, and the display base 40 is correspondingly disposed on the opposite side of the lens housing 101.

[0059] Refer to Figure 4, which is a right-side view of a micro light engine according to a fourth embodiment of the present invention. As shown in Figure 4, unlike the second embodiment, the micro light engine further includes a display base 40. The display base 40 is disposed on the opposite side of the lens housing 101. The lens base 30 is disposed between the display base 40 and the lens housing 101. The micro display panel 20 is disposed adjacent to the lens base 30. The lens base 30 includes a first light guide component 304 and a first light shielding component 303. The first light shielding component 303 covers the outer surface of the first light guide component 304. The display base 40 includes a second light guide component 402 (see the second light guide component 402 in Figure 6) and a second light shielding component 401 (see the second light shielding component 401 in Figure 6). The second light shielding component 401 covers the outer surface of the second light guide component 402. The first light guide component 304 and the light-emitting chip 203 are respectively disposed corresponding to the second light guide component 402. The second light guide component 402 is a through-hole provided in the display base 40. One end of the through-hole is connected to the first light guide component 304, and the other end is connected to the light-emitting chip 203. The through-hole includes a fourth segment and a fifth segment. The fourth segment is connected to the first light guide component 304, and the fifth segment is connected to the light-emitting chip 203. A prism 403, such as a triangular prism, is provided at the intersection of the fourth and fifth segments. Referring to Figure 6, light emitted by the light-emitting chip 203 enters the fifth segment, is reflected by the prism 403, enters the fourth segment, then passes through the first light guide component 304 and the collimating lens at the light entrance end of the first light guide channel 103, and then continues to propagate, exiting at the projection end 102.

[0060] Some embodiments of the present invention provide an electronic device.

[0061] In some embodiments, the electronic device is a microprojector. The microprojector includes a projection panel and a microlight engine. The microlight engine generates light and projects it onto the projection panel. The present invention, when applied to a microprojector, can achieve compact size, high imaging quality, and portability.

[0062] In other embodiments, the electronic device is a near-eye display device, such as AR (Augmented Reality), VR (Virtual Reality), or MR (Mediated Reality). The near-eye display device includes a wearable device and a micro-light engine disposed on the wearable device. The present invention, when applied to a near-eye display device, can achieve the goals of small size, high imaging quality, and portability.

[0063] In some other embodiments, the electronic device is a mobile terminal. The mobile terminal includes a housing in which a micro light engine is disposed. The present invention is applied to a mobile terminal to achieve the goals of small size, high imaging quality, and portability.

[0064] It should be noted that relational terms in this document, such as "first" and "second", are used only to distinguish an entity or operation from another entity or operation, and do not require or imply any actual relationship or order between these entities or operations. In addition, the words "include", "have" and "include" and other similar forms are intended to be equivalent in meaning and are open-ended, and one or more items following any of these words are not intended to be an exhaustive list of such one or more items, or to be limited to the listed one or more items.

[0065] As used herein, unless expressly stated otherwise, the term "or" encompasses all possible combinations unless not feasible. For example, if a component is stated to include either A or B, then unless expressly stated otherwise or not feasible, the component may include A, or B, or A and B. As a second example, if a component is stated to include either A, B, or C, then unless expressly stated otherwise or not feasible, the component may include A, or B, or C, or A and B, or A and C, or B and C, or A, B, and C.

[0066] In the foregoing description, embodiments have been described with reference to many specific details, which may vary depending on the implementation. Certain changes and modifications may be made to the described embodiments. Other embodiments will be clear to those skilled in the art in view of the description and practice of the invention disclosed herein. The description and examples are intended to be regarded as merely exemplary, with the true scope and spirit of the invention being indicated by the following claims. The order of steps shown in the accompanying drawings is also intended to be for illustrative purposes only and is not intended to be limited to any particular order of steps. Therefore, it will be understood by those skilled in the art that these steps may be performed in different orders while implementing the same method.

[0067] In the drawings and the specification, exemplary embodiments have been disclosed. However, many variations and modifications may be made to these embodiments. Therefore, although specific terms are employed, they are used in a general and descriptive sense only and not for the purpose of limitation.

Claims

1. A micro light engine, characterized in that: include: a lens assembly, the lens assembly comprising a lens housing and a first light guide channel disposed in the lens housing, the first light guide channel comprising a projection end; and at least one micro display panel, wherein the micro display panel comprises a light emitting chip; The lens housing is connected to the micro display panel at least on the opposite side and the adjacent side of the projection end, and the light emitted by the light-emitting chip enters the first light guide channel and propagates through the projection end.

2. The micro light engine according to claim 1, characterized in that: It further includes a lens base; the lens base is connected to the lens housing and the micro display panel, and the lens base and the micro display panel are both arranged on opposite sides of the projection end.

3. The micro light engine according to claim 2, characterized in that: The micro display panel is disposed on at least one of the opposite side and the adjacent side of the lens housing; and The lens base comprises a first light guide component and a first light shielding component, wherein the first light shielding component is covered on the outer surface of the first light guide component; The first light guide channel and the light emitting chip are respectively arranged corresponding to the first light guide component.

4. The micro light engine according to claim 3, characterized in that: The micro light engine further includes a display base; The display base is arranged between the lens base and the micro display panel, and the display base includes a second light guide component and a second light shielding component, the second light shielding component is coated on the outer surface of the second light guide component, and the first light guide component and the light emitting chip are respectively arranged corresponding to the second light guide component; or, The display base is connected to the micro display panel, and the micro display panel is arranged between the lens base and the display base.

5. The micro light engine according to claim 2, characterized in that: The micro light engine further includes a display base; The display base is arranged on the opposite side of the lens housing, the lens base is arranged between the display base and the lens housing, and the micro display panel is arranged on the adjacent side of the lens base; The lens base comprises a first light guide component and a first light shielding component, wherein the first light shielding component is covered on the outer surface of the first light guide component; and The display base comprises a second light guide component and a second light shielding component, wherein the second light shielding component is coated on the outer surface of the second light guide component; The first light guide component and the light emitting chip are respectively arranged corresponding to the second light guide component.

6. The micro light engine according to claim 1, characterized in that: The micro display panel further includes a circuit board and a reinforcement board, wherein the circuit board includes a flexible circuit end, the flexible circuit end and the light emitting chip are arranged on the reinforcement board, and the circuit board is electrically connected to the light emitting chip.

7. The micro light engine according to claim 6, characterized in that: A chip protection layer is provided on a side of the light emitting chip away from the reinforcing plate, wherein the chip protection layer is provided with a light-transmitting area, and the light-transmitting area is arranged corresponding to a light-emitting area of ​​the light emitting chip.

8. The micro light engine according to claim 7, characterized in that: The circuit board further includes a hard circuit end; the hard circuit end is electrically connected to the flexible circuit end, and a connector is provided on one side of the hard circuit end, and an electronic component and a shielding cover with a cavity are provided on the other side, wherein the electronic component is arranged in the shielding cover.

9. The micro light engine according to claim 1, wherein: The lens assembly further includes at least one collimating lens and at least one light converging lens; and The first light guide channel further includes a light entrance end, and the light entrance end is close to the lens base; A collimating lens is arranged at the light incident end, and a light converging lens is arranged at the projection end.

10. The micro light engine according to claim 2, characterized in that: The lens base includes a flat portion and a raised portion, the raised portion is matched with the lens housing, and the raised portion is correspondingly arranged with the first light guide channel.

11. The micro light engine according to claim 10, characterized in that: The flat portion and the convex portion are integrally formed or the flat portion and the convex portion are independently arranged.

12. The micro light engine according to claim 1, wherein: The light emitted by the micro display panel is one of monochromatic light and colored light.

13. The micro light engine according to claim 12, characterized in that: The light emitting chip is one of a Microled chip, a Miniled chip and an Oled chip.

14. An electronic device, characterized in that: The method comprises the micro optical engine as claimed in any one of claims 1 to 12.

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