Patent Application
20220126752
This application claims the priority benefit of Taiwan application serial no. 109136850, filed on Oct. 23, 2020. The entirety of the above-mentioned patent application is hereby incorporated by reference herein and made a part of this specification.
The disclosure relates to a rear-view mirror, and particularly relates to a rear-view mirror with a display function.
Generally, people have a limited field of vision when driving a vehicle. Vehicle drivers may only determine surrounding and rear vehicles when driving on the road through a left side and a right side rear-view mirrors and an interior rear-view mirror. Therefore, the driver's line of sight has blind spots, i.e., the so-called “blind zones”. If motorcycles or vehicles enter the rear blind zones on both sides, the driver cannot detect the presence of other vehicles through the left side and the right side rear-view mirrors and the interior rear-view mirror. Even if a blind spot warning system is installed, such a device only flashes light at edges of the left side and the right side rear-view mirrors or sends audible warnings, and the driver still cannot actually see the surrounding vehicles.
In addition, the existing digital LCD display installed on the interior rear-view mirror is subject to a backlight brightness adjustment design (a turn-on/off function), and thus the displayed images are easily unclear due to the serious light reflection of the external environment during daytime driving; on the contrary, when driving at night, the displayed images are overly bright, thus causing fatigue and dazzling when the driver watches the displayed images for a long time and casting doubts on driving safety of the driver. In order to solve the above-mentioned issues, various brightness enhancement films are currently applied to mitigate the defects, but the manufacturing cost of the rear-view mirror is also increased.
The disclosure is directed to a rear-view mirror with a display function, which improves driving safety of a driver.
The disclosure provides a rear-view mirror with a display function including a rear-view mirror body and a display structure layer. The display structure layer is disposed on one side of the rear-view mirror body and includes a plurality of light-emitting diodes and a driving circuit layer. The light-emitting diodes are located between the rear-view mirror body and the driving circuit layer. The light-emitting diodes are electrically connected to the driving circuit layer.
In an embodiment of the disclosure, the rear-view mirror body includes a substrate, a transparent electrode layer, a reflective electrode layer, a sealant, and an electrochromic material. The transparent electrode layer is disposed on the substrate. The reflective electrode layer is disposed on one side of the transparent electrode layer. The sealant is disposed between the transparent electrode layer and the reflective electrode layer. The sealant, the transparent electrode layer, and the reflective electrode layer define an accommodating space. The electrochromic material fills the accommodating space.
In an embodiment of the disclosure, an incident beam enters from the outside through a viewing surface of the substrate, and the incident beam is reflected by the reflective electrode layer and exits from the viewing surface of the substrate. A reflectivity of the rear-view mirror body to the incident beam is greater than 40%, and a transmittance of the rear-view mirror to an image beam is greater than 15%.
In an embodiment of the disclosure, the display structure layer further includes a substrate and a first planarization layer. The driving circuit layer is disposed on the substrate and located between the light-emitting diodes and the substrate. The first planarization layer is disposed on the light-emitting diodes, and the light-emitting diodes are located between the first planarization layer and the driving circuit layer.
In an embodiment of the disclosure, the display structure layer further includes a color conversion layer and a second planarization layer. The color conversion layer is disposed on the first planarization layer. The second planarization layer is disposed on the color conversion layer and located between the rear-view mirror body and the color conversion layer.
In an embodiment of the disclosure, the color conversion layer includes a phosphor layer or a quantum dot layer.
In an embodiment of the disclosure, the light-emitting diodes include a plurality of monochromatic diodes, such as a plurality of blue micro light-emitting diodes or a plurality of white micro light-emitting diodes.
In an embodiment of the disclosure, the driving circuit layer includes an active device array circuit or a redistribution circuit layer.
In an embodiment of the disclosure, the display structure layer further includes a second planarization layer located between the driving circuit layer and the light-emitting diodes.
In an embodiment of the disclosure, the light-emitting diodes include at least one red light-emitting diode, at least one green light-emitting diode, and at least one blue light-emitting diode.
In an embodiment of the disclosure, the driving circuit layer includes a redistribution circuit layer.
In an embodiment of the disclosure, the display structure layer further includes a passivation layer, a substrate, and a planarization layer. The driving circuit layer is disposed on the passivation layer and located between the light-emitting diodes and the passivation layer. The substrate is disposed on the light-emitting diodes and is located between the rear-view mirror body and the passivation layer. The planarization layer is disposed between the passivation layer and the substrate.
In an embodiment of the disclosure, the display structure layer further includes a color conversion layer disposed on the planarization layer and located between the substrate and the planarization layer. The planarization layer is located between the color conversion layer and the light-emitting diodes.
In an embodiment of the disclosure, the color conversion layer includes a phosphor layer or a quantum dot layer.
In an embodiment of the disclosure, the light-emitting diodes include a plurality of blue micro light-emitting diodes or a plurality of white micro light-emitting diodes.
In an embodiment of the disclosure, the driving circuit layer includes an active device array circuit or a redistribution circuit layer.
In an embodiment of the disclosure, the display structure layer further includes an adhesive layer disposed between the substrate and the light-emitting diodes. The planarization layer is located between the light-emitting diodes and the driving circuit layer.
In an embodiment of the disclosure, the light-emitting diodes include at least one red light-emitting diode, at least one green light-emitting diode, and at least one blue light-emitting diode.
In an embodiment of the disclosure, the driving circuit layer includes a redistribution circuit layer.
In an embodiment of the disclosure, the rear-view mirror displays a left image frame, a rear image frame, and a right image frame through a streaming media technology.
In an embodiment of the disclosure, the rear image frame is located between the left image frame and the right image frame, and an area of the rear image frame is larger than an area of the left image frame and an area of the right image frame.
In an embodiment of the disclosure, the area of the left image frame or the area of the right image frame occupies more than ¼ of a display frame of the rear-view mirror.
Based on the above description, the design of the rear-view mirror with the display function of the disclosure is to combine the rear-view mirror body with the display structure layer with use of the light-emitting diodes as light sources. Since the light-emitting diodes have a high resolution and do not need any backlight source due to its self-luminescence, compared with the existing digital LCD display installed on the interior rear-view mirror, the display structure layer provided in one or more embodiments of the disclosure is not limited to the backlight brightness adjustment design (the turn-on/off function), which improves driving safety of the driver.
To make the above description more comprehensible, several embodiments accompanied with drawings are described in detail as follows.
The accompanying drawings are included to provide a further understanding of the disclosure, and are incorporated in and constitute a part of this specification. The drawings illustrate embodiments of the disclosure and, together with the description, serve to explain the principles of the disclosure.
In detail, in the embodiment, the rear-view mirror body 110 includes a substrate 112, a transparent electrode layer 114, a reflective electrode layer 116, a sealant 115 and an electrochromic material 118. The transparent electrode layer 114 is disposed on the substrate 112. The reflective electrode layer 116 is disposed on one side of the transparent electrode layer 114. The sealant 115 is disposed between the transparent electrode layer 114 and the reflective electrode layer 116, where the sealant 115, the transparent electrode layer 114, and the reflective electrode layer 116 define an accommodating space C. The electrochromic material 118 fills the accommodating space C. The substrate 112 is, for example, a glass substrate, a plastic substrate, or a laminated material substrate, but the disclosure is not limited thereto.
To be specific, the transparent electrode layer 114 and the reflective electrode layer 116 are used to drive the electrochromic material 118. When the electrochromic material 118 is enabled (for example, when there is a sufficient potential difference between the transparent electrode layer 114 and the reflective electrode layer 116), the electrochromic material 118 may have an electrochemical oxidation-reduction reaction to change its energy level, so as to present a diming state. At this time, when an external beam (i.e., an incident beam L1) sequentially penetrates through the substrate 112 and the transparent electrode layer 114 to reach the electrochromic material 118, the external beam may be absorbed by the electrochromic material 118, and the rear-view mirror 100a is switched to anti-glare mode. On the other hand, when the electrochromic material 118 is not enabled (for example, when there is no sufficient potential difference between the transparent electrode layer 114 and the reflective electrode layer 116), the electrochromic material 118 may present a light-transmitting state. At this time, the external beam (i.e., the incident beam L1) may sequentially penetrate through the substrate 112, the transparent electrode layer 114, and the electrochromic material 118 and is reflected by the reflective electrode layer 116 (i.e., to form a reflected beam L2), so that the rear-view mirror 100a is switched to a mirror mode. In other words, when the electrochromic material 118 is enabled, an ambient beam from the outside of the display structure layer 120a is dimmed by the electrochromic material 118; when the electrochromic material 118 is not enabled, the ambient beam from the outside of the display structure layer 120a penetrates through the electrochromic material 118 and is reflected by the reflective electrode layer 116. Preferably, in a normal state of an electrochromic actuation principle, a transmittance of a lens group in an initial state is about 70-80%, and in the enabled state, an external voltage is applied to the lens group to make the electrochromic material to produce a color change, and now the transmittance may be reduced to below 40%.
In brief, the incident beam L1 enters from the outside through a viewing surface of the substrate 112, and the incident beam L1 is reflected by the reflective electrode layer 116 so that the incident beam L1 exits from the viewing surface of the substrate 112. A reflectance of the rear-view mirror body 110 to the incident beam L1 is greater than 40%, and a transmittance of the rear-view mirror 100a to an image beam is greater than 15%. In an embodiment, a shape of the viewing surface is, for example, a circle, an ellipse, or a polygon. In another embodiment, the viewing surface may also be a full mirror surface. Moreover, in an embodiment, the rear-view mirror body may also include a housing, and the housing includes a side wall surrounding a periphery of the substrate, and the side wall has a front housing surface aligned with the viewing surface of the substrate. At this time, a surface shape of the viewing surface may be, for example, a planar surface or a curved surface. In addition, a material of the transparent electrode layer 114 provided in the embodiment is, for example, indium tin oxide, indium zinc oxide, aluminum tin oxide, aluminum zinc oxide, indium germanium zinc oxide, titanium oxide, or a composite material of at least two of the above materials. A material of the reflective electrode layer 116 is, for example, silver, copper, aluminum, titanium, nickel, chromium, molybdenum, or a composite material of at least two of the above materials.
With reference to
Since the light-emitting diode 126a has advantages of high brightness, high resolution, and no backlight source (due to self-luminescence), compared with the existing digital LCD display installed on the interior rear-view mirror, the display structural layer 120a provided in the embodiment is not limited to the backlight brightness adjustment design (the turn-on/off function), which may improve the driving safety of the driver.
In terms of a manufacturing process, the substrate 122 is provided first. Then, fabrication of the driving circuit layer 124a, implantation of the light-emitting diodes 126a, formation of the first planarization layer 123a, screen-printing of the color conversion layer 128, formation of the second planarization layer 125a, and coating of the reflective electrode layer 116 are sequentially performed. Thereafter, the sealant 115, the transparent electrode layer 114 and the substrate 112 are assembled, and the electrochromic material 118 is injected after baking to complete the manufacture of the rear-view mirror 100a. In brief, the rear-view mirror 100a with the display function as provided in the embodiment is embodied as an integrated structure.
In terms of application, with reference to
Then, with reference to
Similarly, with reference to
In brief, in the embodiment, rear-view mirror monitoring regions on the left side and the right side of the vehicle, a blind spot assist system, and a driving photography function, etc., may be combined to the interior rear-view mirror 100a by using streaming media, which may display/switch three real-time monitoring images, so that when the driver changes lanes or makes turns during driving, the left image frame A1 or the right image frame A3 may be enlarged to be more than ¼ of the display frame A according to requirements, which may avoid blind spots in the line of sight and improve safety of the driver.
To be more specific, in the embodiment, the streaming media is combined to the rear-view mirror 100 based on the advantages of high brightness, high resolution and no backlight source (due to self-luminescence) of the micro light-emitting diodes, and the rear-view mirror 100 may display/switch three real-time monitoring images to allow the driver to clearly see a state of the left side or the right side outside the vehicle when the driver needs to change lanes or make turns during driving, which improves the safety of the driver. Namely, in the embodiment, camera images (including a blind spot reminder) of the left and right sides outside the vehicle may be integrated to the interior rear-view mirror 100a to achieve a purpose of full-view monitoring. It should be noticed that reference numbers of the components and a part of contents of the above-mentioned embodiment are also used in the following embodiment, where the same reference numbers denote the same or like components, and descriptions of the same technical contents are omitted. The above-mentioned embodiment may be referred for descriptions of the omitted parts, and detailed descriptions thereof are not repeated in the following embodiment.
In terms of the manufacturing process, the substrate 122 is provided first. Then, fabrication of the driving circuit layer 124b, formation of the first planarization layer 123b, implantation of the light-emitting diodes 126b, formation of the second planarization layer 125a, and coating of the reflective electrode layer 116 are sequentially performed. Thereafter, the sealant 115, the transparent electrode layer 114 and the substrate 112 are assembled, and the electrochromic material 118 is injected after baking to complete the manufacture of the rear-view mirror 100b. In brief, the rear-view mirror 100b with the display function provided in the embodiment is embodied as an integrated structure.
In detail, in addition to a driving circuit layer 134a and light-emitting diodes 136a, the display structure layer 130a further includes a passivation layer 132, a substrate 139, and a planarization layer 135a. The driving circuit layer 134a is disposed on the passivation layer 132 and is located between the light-emitting diodes 136a and the passivation layer 132. The substrate 139 is disposed on the light-emitting diodes 136a and is located between the rear-view mirror body 110 and the passivation layer 132. The planarization layer 135a is disposed between the passivation layer 132 and the substrate 139. Furthermore, the display structure layer 130a provided in the embodiment further includes a color conversion layer 138, where the color conversion layer 138 is disposed on the planarization layer 135a and located between the substrate 139 and the planarization layer 135a. The planarization layer 135a is located between the color conversion layer 138 and the light-emitting diodes 136a. Here, the driving circuit layer 134a is, for example, an active device array circuit or a redistribution circuit layer. The light-emitting diodes 136a are, for example, a plurality of blue micro light-emitting diodes. The color conversion layer 138 is, for example, a quantum dot layer.
In terms of the manufacturing process, the substrate 139 is provided first. Then, fabrication of the color conversion layer 138 and the planarization layer 135a, implantation of the light-emitting diodes 136a, fabrication of the driving circuit layer 134a and coating of the passivation layer 132 are sequentially performed to complete the display structure layer 130a. Thereafter, the display structure layer 130a is turned over, and coating of the reflective electrode layer 116, assembling of the sealant 115, the transparent electrode layer 114 and the substrate 112 are sequentially performed, and then the electrochromic material 118 is injected after baking to complete the manufacture of the rear-view mirror 100c.
In terms of the manufacturing process, the substrate 139 is provided first. Then, formation of the adhesive layer 133, implantation of the light-emitting diodes 136b, and the planarization layer 135b, fabrication of the driving circuit layer 134b and coating of the passivation layer 132 are sequentially performed to complete the display structure layer 130b. Thereafter, the display structure layer 130b is turned over, and coating of the reflective electrode layer 116, assembling of the sealant 115, the transparent electrode layer 114 and the substrate 112 are sequentially performed, and then the electrochromic material 118 is injected after baking to complete the manufacture of the rear-view mirror 100d.
To sum up, the design of the rear-view mirror with the display function of the disclosure is to combine the rear-view mirror body with the display structure layer with use of the light-emitting diodes as light sources. Since the light-emitting diodes have a high resolution and do not need any backlight source due to its self-luminescence, compared with the existing digital LCD display installed on the interior rear-view mirror, the display structure layer provided in one or more embodiments of the disclosure is not limited to the backlight brightness adjustment design (the turn-on/off function), which improves driving safety of the driver.
It will be apparent to those skilled in the art that various modifications and variations can be made to the disclosed embodiments without departing from the scope or spirit of the disclosure. In view of the foregoing, it is intended that the disclosure covers modifications and variations provided they fall within the scope of the following claims and their equivalents.
| Number | Date | Country | Kind |
|---|---|---|---|
| 109136850 | Oct 2020 | TW | national |
