KR-102964020-B1 - ELECTROCHROMIC MIRROR SYSTEM COMPRISING TRANSPARENT OLED

KR102964020B1KR 102964020 B1KR102964020 B1KR 102964020B1KR-102964020-B1

Abstract

The present invention relates to an electrochromic mirror system including a transparent OLED. According to one example, an electrochromic mirror system for a vehicle comprises: a front transparent substrate, a first transparent conductive layer below the front transparent substrate, a second transparent conductive layer, and an organic light-emitting assembly layer between the first and second transparent conductive layers, and a transparent OLED panel part that operates by receiving a first power source; an intermediate connecting layer provided below the second transparent conductive layer, which electrically insulates the transparent OLED panel part and the electrochromic mirror (ECM) panel part and transmits light incident on the electrochromic mirror (ECM) panel part through the transparent OLED panel part; an ECM front element including a third transparent conductive layer provided below the intermediate connecting layer, an ECM rear element having a fourth conductive layer on a rear substrate and a reflective function, and an electrochromic layer between the third transparent conductive layer and the fourth conductive layer, and an electrochromic mirror (ECM) panel part that changes color by receiving a second power source separate from the first power source. An electrochromic mirror system including a transparent OLED is proposed, characterized by including a system control unit that controls the provision of a first power supply and data to a transparent OLED panel unit and controls the application of a second power supply to an electrochromic mirror (ECM) panel unit according to an ECM control setting signal.

Inventors

최현태
류광현
박진성
배영민
이지은

Assignees

(주)마팔하이테코

Dates

Publication Date: 20260513
Application Date: 20221227

Claims (9)

In a vehicle electrochromic mirror system, A transparent OLED panel portion comprising a front transparent substrate, a first transparent conductive layer and a second transparent conductive layer located below the front transparent substrate, and an organic light-emitting assembly layer between the first and second transparent conductive layers, and operating by receiving a first power supply; An intermediate connecting layer provided below the second transparent conductive layer, which electrically insulates the transparent OLED panel portion and the electrochromic mirror (ECM) panel portion and transmits light passing through the transparent OLED panel portion and incident on the electrochromic mirror (ECM) panel portion; An electrochromic mirror (ECM) panel portion comprising an ECM front element including a third transparent conductive layer provided below the intermediate connecting layer, an ECM rear element having a reflective function and a fourth conductive layer on a rear substrate, and an electrochromic layer between the third transparent conductive layer and the fourth conductive layer, which changes color upon receiving a second power source separate from the first power source; and It includes a system control unit that controls the provision of the first power and data to the transparent OLED panel unit and controls the application of the second power to the ECM panel unit according to an ECM control setting signal, The above ECM control setting signal is at least one of the internally generated signal of the system and the externally generated signal received by the system, and The internally generated signal of the above system is at least one of a first sensor signal received from an internal optical sensor of the system and a driving control or driving signal of the transparent OLED panel part, and The above external generated signal is a received signal from the vehicle's auto-light system, which is a second sensor signal of an external light sensor belonging to the auto-light system, or a light control signal according to the second sensor signal or the operation signal. The above ECM control setting signal includes an on-control setting signal corresponding to a value below the setting of the first or second sensor signal or a light-on control signal among the externally generated signals, and an off-control setting signal corresponding to a value above the setting of the first or second sensor signal or a light-off control signal among the externally generated signals. An electrochromic mirror system including a transparent OLED, characterized in that the system control unit controls the application of a driving voltage to the ECM panel unit according to at least one of the groups of the driving control or driving signal of the transparent OLED panel unit and the external generated signal.
In a vehicle electrochromic mirror system, A transparent OLED panel portion comprising a front transparent substrate, a first transparent conductive layer and a second transparent conductive layer located below the front transparent substrate, and an organic light-emitting assembly layer between the first and second transparent conductive layers, and operating by receiving a first power supply; An intermediate connecting layer provided below the second transparent conductive layer, which electrically insulates the transparent OLED panel portion and the electrochromic mirror (ECM) panel portion and transmits light passing through the transparent OLED panel portion and incident on the electrochromic mirror (ECM) panel portion; An electrochromic mirror (ECM) panel portion comprising an ECM front element including a third transparent conductive layer provided below the intermediate connecting layer, an ECM rear element having a reflective function and a fourth conductive layer on a rear substrate, and an electrochromic layer between the third transparent conductive layer and the fourth conductive layer, which changes color upon receiving a second power source separate from the first power source; and It includes a system control unit that controls the provision of the first power and data to the transparent OLED panel unit and controls the application of the second power to the ECM panel unit according to an ECM control setting signal, The above transparent OLED panel unit is operated on and off according to the vehicle's starting state, user settings, or programmed setting conditions, and The above intermediate connecting layer is composed of a single insulating layer of an intermediate transparent substrate, or a multilayer insulating layer comprising a first intermediate transparent substrate below the second transparent conductive layer, a transparent adhesive layer, and a second intermediate transparent substrate above the third transparent conductive layer, or is composed of a variable transmission assembly including a transmittance variable layer that blocks or absorbs OLED light irradiated toward the ECM panel side by varying light transmittance in one of the polymer dispersed liquid crystal (PDLC) method, polarized particle device (SPD) method, bistable liquid crystal method, or electrochromic (EC) method, and is driven on or off according to the on-driving of the transparent OLED panel part. An electrochromic mirror system including a transparent OLED, characterized in that the ECM panel in the off state is turned on according to the on-driving of the transparent OLED panel, and the electrochromic layer changes color or the light transmittance of the variable transmittance layer changes, thereby blocking or absorbing the OLED light irradiated toward the ECM panel and mitigating light interference caused by the reflection function of the ECM rear element.
In claim 1, While the ECM panel part is off, the ECM panel part is turned on according to the on-control setting signal, according to the on-drive control or on-drive signal of the transparent OLED panel part, or according to the off-drive control or off-drive signal of the transparent OLED panel part under the state of the on-control setting signal. During the On operation of the ECM panel unit, according to the Off-control setting signal, under the state of the Off-control setting signal, the ECM panel unit is Off-controlled according to the Off-drive control or Off-drive signal of the transparent OLED panel unit or according to the On-drive control or On-drive signal of the transparent OLED panel unit, and An electrochromic mirror system including a transparent OLED, characterized in that the standard for a value greater than the set value of the first or second sensor signal is equal to or greater than the standard for a value less than the set value of the first or second sensor signal.
In claim 1, During the off state of the ECM panel part due to the cutoff of the above driving voltage, the driving voltage is applied to the ECM panel part according to the priority signal among the on-control setting signal and the on-drive control or on-drive signal of the transparent OLED panel part, and An electrochromic mirror system including a transparent OLED, characterized in that the driving voltage applied to the ECM panel is blocked according to the later signal among the off-control setting signal and the off-drive control or off-drive signal of the transparent OLED panel during the on-drive of the ECM panel according to the application of the driving voltage.
In claim 1, The above system control unit includes an OLED control unit that performs control of the transparent OLED panel unit and an ECM control unit that performs control of the ECM panel unit, and An electrochromic mirror system including a transparent OLED, characterized in that the above-described OLED control unit outputs text or symbol data according to a setting onto a real-time image displayed on the transparent OLED panel, or drives the transparent OLED panel in an off-state to turn on and output the data.
In any one of claims 1, 3, 4, and 5, The above transparent OLED panel unit is operated on and off according to the vehicle's starting state, user settings, or programmed setting conditions, and The above intermediate connecting layer is composed of a single insulating layer of an intermediate transparent substrate, or a multilayer insulating layer comprising a first intermediate transparent substrate below the second transparent conductive layer, a transparent adhesive layer, and a second intermediate transparent substrate above the third transparent conductive layer, or is composed of a variable transmission assembly including a transmittance variable layer that blocks or absorbs OLED light irradiated toward the ECM panel side by varying light transmittance in one of the polymer dispersed liquid crystal (PDLC) method, polarized particle device (SPD) method, bistable liquid crystal method, or electrochromic (EC) method, and is driven on or off according to the on-driving of the transparent OLED panel part. An electrochromic mirror system including a transparent OLED, characterized in that the ECM panel in the off state is turned on according to the on-driving of the transparent OLED panel, and the electrochromic layer changes color or the light transmittance of the variable transmittance layer changes, thereby blocking or absorbing the OLED light irradiated toward the ECM panel and mitigating light interference caused by the reflection function of the ECM rear element.
In claim 6, The above intermediate connecting layer is composed of a single insulating layer of an intermediate transparent substrate or is composed of a multilayer insulating layer including a first intermediate transparent substrate below the second transparent conductive layer, a transparent adhesive layer, and a second intermediate transparent substrate above the third transparent conductive layer. As the transparent OLED panel unit is turned on, the ECM panel unit in the off state is turned on, and the electrochromic layer changes color, thereby absorbing the OLED light irradiated toward the ECM panel unit and mitigating light interference caused by the reflection function of the ECM rear element. The ECM panel is turned off according to the later signal among the off-control setting signal during the on-drive of the ECM panel and the off-drive control or off-drive signal of the transparent OLED panel, and An electrochromic mirror system including a transparent OLED, characterized in that the off-control setting signal is one of the ECM control setting signals and is a set value of the first sensor signal of the internal optical sensor of the system or the second sensor signal of the external optical sensor belonging to the auto light system of the vehicle, or a light-off control signal among the light control signals of the auto light system.
In claim 6, The above intermediate connecting layer is composed of the above variable transmission assembly, and The above-mentioned variable transparency layer is turned off when the above-mentioned transparent OLED panel portion is turned on, and is a polymer-dispersed liquid crystal method, a polarized particle device method, or a bistable liquid crystal method in which the light transmittance is varied to block or absorb the OLED light. When the transparent OLED panel portion is turned on, the transparent variable layer and the ECM panel portion are turned off, and When the transparent OLED panel portion in the ON state is turned OFF according to the user's setting or the programmed setting condition, the transparent variable layer is turned ON and transmits light passing through the transparent OLED panel portion from the front, and the transparent OLED panel portion is turned ON according to the ON-control setting signal, and An electrochromic mirror system including a transparent OLED, characterized in that the above-mentioned on-control setting signal is one of the above-mentioned ECM control setting signals and is a value less than or equal to the setting of the first sensor signal of the internal optical sensor of the system or the second sensor signal of the external optical sensor belonging to the auto-light system of the vehicle, or a light-on control signal among the light control signals of the auto-light system.
In claim 6, The electrochromic mirror system including a transparent OLED is characterized in that the electrochromic layer comprises a single electrolyte layer including an oxidizing agent and a reducing agent, an organic electrochromic electrolyte layer including an organic oxidizing agent that is in contact with the third transparent conductive layer and is disposed between the fourth conductive layer and the organic electrochromic electrolyte layer and is disposed between the fourth conductive layer and the organic electrochromic electrolyte layer and is disposed between the fourth conductive layer and the organic electrochromic electrolyte layer and is disposed between the fourth conductive layer and the organic electrochromic electrolyte layer and is disposed between the ion storage layer and the third transparent conductive layer, and the inorganic electrochromic layer including the inorganic reducing agent.

Description

Electrochromic Mirror System Comprising Transparent OLED The present invention relates to an electrochromic mirror system. Specifically, it relates to an electrochromic mirror system including a transparent OLED, wherein a transparent OLED is provided on the front side of an electrochromic mirror panel of a vehicle. Electrochromism is a phenomenon in which color changes reversibly depending on the direction of the electric field when voltage is applied. Due to the movement of electrons occurring during oxidation or reduction reactions, the oxidation state of a compound changes, and consequently, the absorption wavelength of light in the visible or near-infrared regions changes, resulting in a change in color. Electrochromic materials have the characteristic of remaining colorless when no external electrical signal is applied but becoming colored when an electrical signal is applied, or conversely, remaining colored when no external signal is applied but losing color when a signal is applied. Electrochromic devices are devices that utilize the phenomenon in which the light transmittance of an electrochromic material changes due to electrochemical oxidation-reduction reactions, and they are used to control the light transmittance or reflectance of architectural windows or automotive mirrors. Electrochromic mirrors (ECMs) can be used as automotive rear-view mirrors, and by lowering reflectivity at night, they can reduce the excessive reflection of strong headlights from oncoming vehicles on the rearview mirror when driving at night. In environments where ambient light intensity changes and illumination levels are low—for instance, when the headlights of a vehicle behind are reflected through a rearview mirror—a high reflectivity can create a contrast with the relatively lowered ambient light, potentially obstructing the driver's vision. Accordingly, many electrochromic mirrors have been developed that change color to lower reflectivity, such as in rearview mirrors, when ambient light intensity changes and illumination levels decrease. Rear-side image data acquired through a camera in a vehicle has a wider field of view than the vehicle's mirror, so displaying images from a rear camera instead of a mirror can be effective. However, when displaying camera images in place of the vehicle's mirror, if the display fails to operate due to unexpected circumstances, it becomes problematic because the rear view cannot be secured. Accordingly, a mirror system combining a vehicle's rearview mirror and a display such as an LCD has been proposed. In this case, when combining an electrochromic mirror with a display such as an LCD, the display blocks light, so it has been placed on the rear side, while a transparent electrochromic module has been positioned on the front side. Meanwhile, an OLED (Organic light emitting device) is a display that utilizes the electroluminescence phenomenon, in which fluorescent organic materials are arranged between electrodes and emit light when an electric current is passed through them. OLEDs can be driven at low voltages and can be made into thin films. They have a wide viewing angle and a fast response speed. OLEDs can be classified into top-emitting, bottom-emitting, and bidirectional (transparent) types depending on the direction of light emission. FIGS. 1a and 1b are block diagrams schematically illustrating an electrochromic mirror system including a transparent OLED according to one embodiment of the present invention. FIGS. 2a and 2b are block diagrams schematically illustrating an electrochromic mirror system including a transparent OLED according to another embodiment of the present invention. FIGS. 3a to 3c are schematic drawings illustrating an electrochromic mirror system including a transparent OLED according to another embodiment of the present invention. FIGS. 4a and 4b are schematic drawings illustrating an electrochromic mirror system including a transparent OLED according to another embodiment of the present invention. FIG. 5 is a diagram schematically illustrating the driving control process of the ECM panel part in an electrochromic mirror system including a transparent OLED according to another embodiment of the present invention. Embodiments of the present invention for achieving the aforementioned objectives will be described with reference to the accompanying drawings. The disclosure in this specification and/or drawings is not intended to limit the specific embodiments of the disclosed technology and should be understood to include various modifications, equivalents, and/or substitutions of the disclosed embodiments. In the description of this specification, like reference numerals denote like components, and secondary descriptions may be omitted to facilitate understanding of the present invention by those skilled in the art. Furthermore, the terms used in this specification are used merely to describe specific embodiments and should not be interpreted as limiting t