PATENT DOCUMENT

Publication Number: US-12130521-B1
Application Number: US-202217989447-A
Country: US
Kind Code: B1

Title: Windows with liquid crystal layers

Abstract:
A vehicle or other system may have windows. A window may include an outer glass layer having a concave inner surface and an inner glass layer having a convex inner surface. Transparent conductive electrodes may be formed on the concave inner surface and the convex outer surface. A liquid crystal layer such as a nanocapsule guest-host liquid crystal layer may be interposed between the transparent conductive electrodes. During manufacturing, a first layer of liquid crystal may be coated onto the transparent electrode on the outer glass layer, and a second layer of liquid crystal may be coated onto the transparent electrode on the inner glass layer. The two coated glass layers may then be pressed together in a vacuum chamber so that the first and second liquid crystal layers merge and become a homogenous layer, thereby removing surface irregularities in the liquid crystal layers and reducing undesired haze.

Claims:
What is claimed is: 
     
       1. A method for forming a window, comprising:
 coating a first transparent substrate with a first liquid crystal layer; 
 coating a second transparent substrate with a second liquid crystal layer; and 
 in a vacuum chamber, pressing the first and second substrates together, wherein the first and second liquid crystal layers are separated from one another by a conductive adhesive having a first surface contacting the first liquid crystal layer and a second surface contacting the second liquid crystal layer and wherein the conductive adhesive has a refractive index that differs from a refractive index of the first and second liquid crystal layers by less than 0.15. 
 
     
     
       2. The method defined in  claim 1  wherein the first and second transparent substrates comprise glass. 
     
     
       3. The method defined in  claim 1  wherein the first and second transparent substrates are curved. 
     
     
       4. The method defined in  claim 1  wherein the first transparent substrate comprises a concave inner surface, the method further comprising:
 forming a first transparent conductive electrode on the concave inner surface. 
 
     
     
       5. The method defined in  claim 4  wherein the second transparent substrate comprises a convex inner surface, the method further comprising:
 forming a second transparent conductive electrode on the convex inner surface. 
 
     
     
       6. The method defined in  claim 5  wherein coating the first transparent substrate with the first liquid crystal layer comprises spray-coating the first liquid crystal layer onto the first transparent conductive electrode. 
     
     
       7. The method defined in  claim 6  wherein coating the second transparent substrate with the second liquid crystal layer comprises spray-coating the second liquid crystal layer onto the second transparent conductive electrode. 
     
     
       8. The method defined in  claim 5  wherein the first and second transparent conductive electrodes comprise a material selected from the group consisting of: indium tin oxide and silver nanowire. 
     
     
       9. The method defined in  claim 1  wherein the first and second liquid crystal layers comprise guest-host liquid crystal material. 
     
     
       10. The method defined in  claim 9  wherein the guest-host liquid crystal material is located in nanocapsules. 
     
     
       11. A method for forming a window, comprising:
 coating a first glass layer with a first liquid crystal layer; 
 coating a second glass layer with a second liquid crystal layer; 
 attaching the first and second glass layers using a transparent conductive adhesive that is interposed between the first and second liquid crystal layers and that has a first surface contacting the first liquid crystal layer and a second surface contacting the second liquid crystal layer, wherein the conductive adhesive has a refractive index that differs from a refractive index of the first and second liquid crystal layers by less than 0.15. 
 
     
     
       12. The method defined in  claim 11  wherein the first and second liquid crystal layers comprise nanocapsules of guest-host liquid crystal material. 
     
     
       13. The method defined in  claim 12  further comprising:
 forming a first electrode on the first glass layer; and 
 forming a second electrode on the second glass layer. 
 
     
     
       14. The method defined in  claim 13  further comprising:
 curing the transparent conductive adhesive with ultraviolet light. 
 
     
     
       15. A window for a vehicle, comprising:
 a first transparent substrate having a concave inner surface; 
 a second transparent substrate having a convex inner surface; 
 a first liquid crystal layer on the concave inner surface; 
 a second liquid crystal layer on the convex inner surface; and 
 a conductive adhesive interposed between the first and second liquid crystal layers, wherein the conductive adhesive has a first surface contacting the first liquid crystal layer and a second surface contacting the second liquid crystal layer and wherein the conductive adhesive has a refractive index that differs from a refractive index of the first and second liquid crystal layers by less than 0.15. 
 
     
     
       16. The window defined in  claim 15  further comprising:
 a first transparent conductive electrode interposed between the first transparent substrate and the conductive adhesive, wherein the first transparent conductive electrode and the conductive adhesive are configured to adjust a first electric field applied to the first liquid crystal layer. 
 
     
     
       17. The window defined in  claim 16  further comprising:
 a second transparent conductive electrode interposed between the second transparent substrate and the conductive adhesive, wherein the second transparent conductive electrode and the conductive adhesive are configured to adjust a second electric field applied to the second liquid crystal layer. 
 
     
     
       18. The window defined in  claim 17  wherein the first and second transparent substrates comprise glass. 
     
     
       19. The window defined in  claim 15  wherein the first and second liquid crystal layers comprise guest-host liquid crystal material. 
     
     
       20. The window defined in  claim 19  wherein the guest-host liquid crystal material is located in nanocapsules.

Description:
This application claims the benefit of provisional patent application No. 63/290,585, filed Dec. 16, 2021, which is hereby incorporated by reference herein in its entirety. 
    
    
     FIELD 
     This relates generally to structures that pass light, and, more particularly, to windows. 
     BACKGROUND 
     Windows are used in buildings and vehicles. Windows may be formed from glass or other transparent material. 
     SUMMARY 
     A vehicle or other system may have windows. Windows may include first and second glass layers. The first glass layer may be a curved outer glass layer having a concave inner surface. The second glass layer may be a curved inner glass layer with a convex inner surface. Transparent conductive electrodes may be formed on the surfaces of the substrates that face each other. The transparent conductive electrodes may be formed from indium tin oxide, silver nanowires, or other transparent conductive material. An electrically adjustable layer such as a guest-host liquid crystal light modulator layer or other electrically adjustable optical component layer may be interposed between the transparent conductive electrodes. The electrically adjustable optical layer may have an electrically adjustable optical characteristic (e.g., adjustable tint, adjustable haze, adjustable polarization, adjustable reflectivity, adjustable color cast, etc.). 
     The guest-host liquid crystal layer may be a nanocapsule liquid crystal layer having nanocapsules of liquid crystal material. During manufacturing, a first layer of nanocapsule liquid crystal may be spray-coated onto the transparent electrode on the first glass layer, and a second layer of nanocapsule liquid crystal may be spray-coated onto the transparent electrode on the second glass layer. The two coated glass layers may then be pressed together in a vacuum chamber. The heat and pressure applied causes the first and second nanocapsule liquid crystal layers to merge and become homogenous, thereby removing surface irregularities in the nanocapsule liquid crystal layers and reducing undesired haze. 
     If desired, a conductive layer such as a conductive adhesive layer may be interposed between the first and second nanocapsule liquid crystal layers to serve as a third driving electrode for the two nanocapsule liquid crystal layers. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG.  1    is a diagram of an illustrative system with windows in accordance with an embodiment. 
         FIG.  2    is a cross-sectional side view of a window having a liquid crystal layer interposed between first and second electrodes on respective first and second substrates in accordance with an embodiment. 
         FIG.  3    is a cross-sectional side view of a first substrate having a convex outer surface and a concave inner surface that is spray-coated with a first layer of liquid crystal material in accordance with an embodiment. 
         FIG.  4    is a cross-sectional side view of a second substrate having a concave outer surface and a convex inner surface that is spray-coated with a second layer of liquid crystal material in accordance with an embodiment. 
         FIG.  5    is a cross-sectional side view of an illustrative vacuum chamber for applying heat and pressure to first and second substrates to merge and homogenize first and second layers of liquid crystal material that are interposed between the first and second substrates in accordance with an embodiment. 
         FIG.  6    is a cross-sectional side view of a window having a conductive adhesive layer interposed between first and second layers of liquid crystal material in accordance with an embodiment. 
     
    
    
     DETAILED DESCRIPTION 
     A system may have one or more windows. The system in which the windows are used may be a building, a vehicle, or other suitable system. Illustrative configurations in which the system is a vehicle may sometimes be described herein as an example. This is merely illustrative. Window structures may be formed in any suitable systems. 
     Windows may include one or more electrically adjustable optical layers for adjusting optical properties of the windows. For example, electrically adjustable windows may be adjusted to change the absorption of light and therefore the light transmission of the windows. An adjustable light modulator layer may, for example, serve as an electrically adjustable sunroof for a rooftop window or may be used to implement an electrically adjustable shade for a side, front, or rear window. 
     In an illustrative configuration, the transparency and/or tint of the window may be modulated using a liquid crystal light modulator such as a guest-host liquid crystal light modulator. The liquid crystal light modulator may be a nanocapsule liquid crystal layer interposed between transparent electrodes on curved substrates. The electrically adjustable optical layer may provide the window with an electrically adjustable optical characteristic (e.g., adjustable tint, adjustable haze, adjustable polarization, adjustable reflectivity, adjustable color cast, etc.). 
     A window for the system may include multiple glass layers. For example, a window may include an inner transparent structural layer (sometimes referred to as an inner glass layer) and an outer transparent structural layer (sometimes referred to as an outer glass layer). The nanocapsule liquid crystal layer may be interposed between the inner and outer layers of the window. 
     During manufacturing, a first layer of nanocapsule liquid crystal may be spray-coated onto the transparent electrode on the first glass layer, and a second layer of nanocapsule liquid crystal may be spray-coated onto the transparent electrode on the second glass layer. The two coated glass layers may then be pressed together in a vacuum chamber. The heat and pressure applied causes the first and second nanocapsule liquid crystal layers to merge and become homogenous, thereby removing surface irregularities in the nanocapsule liquid crystal layers and reducing undesired haze. 
     A cross-sectional top view of an illustrative system that includes windows is shown in  FIG.  1   . System  10  may be a vehicle, building, or other type of system. In an illustrative configuration, system  10  is a vehicle. As shown in the illustrative top view of system  10  in  FIG.  1   , system  10  may have support structures such as body  12 . Body  12  may be a vehicle body that includes doors, trunk structures, a hood, side body panels, a roof, window pillars, and/or other body structures. Body  12  may be configured to surround and enclose an interior region such as interior region  20 . System  10  may include a chassis to which wheels are mounted, may include propulsion and steering systems, and may include a vehicle automation system configured to support autonomous driving (e.g., a vehicle automation system with sensors and control circuitry configured to operate the propulsion and steering systems based on sensor data). This allows system  10  to be driven semi-autonomously and/or allows system  10  to be driven autonomously without a human operator. Manual driving operations may also be supported. 
     One or more windows such as windows  14  may be mounted within openings in body  12 . Windows  14  may, for example, be mounted on the front of body  12  (e.g., to form a front window on vehicle front F), on the rear of body  12  (e.g., to form a rear window at vehicle rear R), on the top (roof) of body  12  (e.g., to form a sun roof), and/or on sides of body  12  (e.g., to form side windows). Windows  14  may include windows that are fixed in place and/or may include windows that can be manually and/or automatically rolled up or down. For example, one or more windows  14  may be controlled using window positioners (e.g., window motors that open and close windows  14  in response to user input or other input). The area of each window  14  may be at least 0.1 m 2 , at least 0.5 m 2 , at least 1 m 2 , at least 5 m 2 , at least 10 m 2 , less than 20 m 2 , less than 10 m 2 , less than 5 m 2 , or less than 1.5 m 2  (as examples). Windows  14  and portions of body  12  may be used to separate interior region  20  from the exterior environment that is surrounding system  10  (exterior region  22 ). 
     System  10  may include components  18 . Components  18  may include seats in the interior of body  12 , sensors, control circuitry, input-output devices, and/or other vehicle components. Control circuitry in system  10  may include one or more processors (e.g., microprocessors, microcontrollers, application-specific integrated circuits, etc.) and storage (e.g., volatile and/or non-volatile memory). Input-output devices in system  10  may include displays, sensors, buttons, light-emitting diodes and other light-emitting devices, haptic devices, speakers, and/or other devices for providing output and/or gathering environmental measurements and/or user input. The sensors may include ambient light sensors, touch sensors, force sensors, proximity sensors, optical sensors, capacitive sensors, resistive sensors, ultrasonic sensors, microphones, three-dimensional and/or two-dimensional image sensors, radio-frequency sensors, and/or other sensors. Output devices may be used to provide a user with haptic output, audio output, visual output (e.g., displayed content, light, etc.), and/or other suitable output. 
     During operation, control circuitry in system  10  may gather information from sensors (e.g., environmental sensors) and/or other input-output devices, may gather user input such as voice commands provided to a microphone, may gather touch commands supplied to a touch sensor, may gather button input supplied to one or more buttons, etc. Control circuitry in system  10  may use this input in driving system  10  and in controlling windows and other parts of system  10 . 
     Windows  14  may have one or more planar portions and/or one or more curved portions. As an example, one or more portions of window  14  may be characterized by a curved cross-sectional profile and may have convex and/or concave exterior surfaces (and corresponding concave and/or convex interior surfaces). The curved portions of windows  14  may include curved surfaces that can be flattened into a plane without distortion, which are sometimes referred to as developable surfaces. The curved portions of window  14  may also include curved surfaces with compound curvature, which cannot be flattened into a plane without distortion and which are sometimes referred to as non-developable surfaces or doubly curved surfaces. 
     Glass layers for windows  14  may be formed by molding glass sheets such as planar sheets of float glass into desired shapes and subsequently laminating these molded sheets together using adhesive. In some arrangements, first and second curved glass layers are provided with transparent conductive electrodes and individually spray-coated with a liquid crystal layer such as nanocapsule liquid crystal layer. The two spray-coated glass layers may then be pressed together in a vacuum chamber. The heat and pressure applied causes the first and second nanocapsule liquid crystal layers to merge and become a single homogenous layer of nanocapsule liquid crystal. Control circuitry in system  10  may be used to apply voltages to the transparent conductive electrodes to adjust the electric field that is applied to the nanocapsule liquid crystal and thereby adjust the tint of the window  14 . 
     An illustrative configuration for a window such as one of windows  14  of  FIG.  1    is shown in  FIG.  2   . As shown in  FIG.  2   , window  14  may include first and second substrates such as first substrate  26  and second substrate  34 . Substrates  26  and  34  may be glass substrates, plastic substrates, and/or substrates formed from other suitable transparent material. Arrangements in which substrates  26  and  34  are formed from glass may be described herein as an illustrative example. 
     Substrates  26  and  34  may be planar or may be curved. In the example of  FIG.  2   , substrates  26  and  34  are curved substrates. Outer substrate  26  may have a convex outer surface and opposing concave inner surface. Inner substrate  34  may have a concave outer surface and a convex inner surface. Outer substrate  26  may face the exterior of system  10  while inner substrate  34  faces the interior of system  10 . This is merely illustrative, however. If desired, substrate  26  may face the interior of system  10  and substrate  34  may face the interior of system  10 . 
     Layers  26  and  34 , which may sometimes be referred to as outer and inner window layers or outer and inner glass layers, may be formed from single-layer glass structures and/or multi-layer glass structures. If desired, these layers may be strengthened (e.g., by annealing, tempering, and/or chemical strengthening). In general, inner glass layer  34  may be a single-layer glass structure (e.g., a single layer of tempered glass) or a laminated glass layer and outer glass layer  26  may be a single-layer glass structure (e.g., a single layer of tempered glass) or a laminated glass layer. 
     If desired, window  14  may include one or more adjustable optical layers (e.g., an adjustable polarizer, an adjustable reflectivity layer such as an adjustable mirror, an adjustable absorber, which may sometimes be referred to as an adjustable light modulator layer or light modulator layer, a layer exhibiting adjustable color, an adjustable haze layer, and/or other adjustable layers). As an example, window  14  may include adjustable layer  30 . Adjustable layer  30  may be, as an example, an electrically adjustable guest-host liquid crystal layer that is adjusted in response to control signals from control circuitry in system  10  via a control input. The guest-host liquid crystal layer can be adjusted to exhibit a higher level of light transmission (e.g., at least 80% or other suitable first amount) or a reduced, lower level of light transmission (e.g., a second amount lower than the first amount such as an amount less than 80%, less than 50%, or less than 20%, as examples). 
     In arrangements in which adjustable layer  30  is a guest-host liquid crystal light modulator, conductive electrodes such as transparent conductive electrodes  32  and  28  may be formed on the inner surfaces of substrates  34  and  26 , respectively. For example, a first transparent conductive electrode  32  may be formed on the convex inner surface of inner substrate  34 , and a second transparent conductive electrode  28  may be formed on the concave inner surface of outer substrate  26 . Transparent conductive electrodes  32  and  28  may be formed from indium tin oxide, silver nanowires, or other transparent conductive material. 
     A layer of liquid crystal material such as liquid crystal layer  30  may be interposed between electrodes  32  and  28 . Liquid crystal layer  30  may be a nanocapsule liquid crystal layer having nanocapsules or other small spheres containing guest-host liquid crystal material. The guest-host liquid crystal material may have guest dye molecules and host liquid crystal molecules. The dye molecules may have anisotropic light absorption properties. The orientation of the guest dye molecules may be controlled by electrically controlling the orientation of the host liquid crystal molecules (e.g., by using control circuitry in vehicle  10  to adjust the voltage across electrodes  32  and  28 ). As a result, the light absorption through layer  30  (e.g., visible light absorption) can be electrically adjusted (e.g., providing window  14  with adjustable tint). 
     When layer  30  is incorporated into window  14 , the amount of light that passes through window  14  may be adjusted dynamically during operation of vehicle  10  (e.g., to reduce bright light and thereby dim interior region  22 , to block the interior region from the exterior region to enhance privacy, etc.). Window  14  may be a roof-top window, a side window, a front window, or a rear window. If desired, one or more reflective layers may be incorporated into the stack of  FIG.  2    to form a mirror in vehicle  10  (e.g., a rear view mirror, a side view mirror, etc.). The mirror may have electrically adjustable tint and/or adjustable reflectivity using layer  30  (e.g., to reduce glare). Arrangements in which the layers of  FIG.  2    form a window in vehicle  10  are sometimes described herein as an illustrative example. 
     In some arrangements, guest-host liquid crystal layer  30  may be a spray-coated layer such as a spray-coated nanocapsule liquid crystal layer. It can be challenging to spray-coat nanocapsule liquid crystals onto a curved surface. If care is not taken, surface irregularities and/or thickness variations in the spray-coated liquid crystal may cause undesired haze in layer  30 . To reduce surface irregularities in layer  30  and improve adhesion between substrates  26  and  34 , first and second portions of layer  30  may be individually and respectively spray-coated onto substrate  26  and  34 . The first and second portions of layer  30  may have a combined thickness that is equal to the resulting desired thickness T 1  of layer  30  in window  14 . The two spray-coated substrates may be pressed together in a vacuum assembly so that the two portions of layer  30  merge and become homogenous under heat and pressure, thereby forming layer  30  having thickness T 1  of  FIG.  2   . This type of approach is illustrated in the cross-sectional side views of  FIGS.  3 ,  4 , and  5   , 
     As shown in  FIG.  3   , a coating tool such as coating tool  36  may be used to apply a first layer of liquid crystal material  30 - 1  (e.g., a first portion of guest-host liquid crystal layer  30  of  FIG.  2   ) to concave inner surface of outer substrate  26 . Coating tool  36  may be any suitable coating tool (e.g., a spray coating tool, a screen printing tool, a pad printing tool, a casting tool, etc.). The concave inner surface of outer substrate  26  is covered with transparent conductive electrode  28 , so layer  30 - 1  is applied over transparent conductive electrode  28 . Layer  30 - 1  may have a thickness T 2  which is less than thickness T 1  of  FIG.  2   . Thickness T 2  may be half of thickness T 1  or may be some other portion of T 1  (e.g., 75% of thickness T 1 , 30% of thickness T 1 , 20% of thickness T 1 , 60% of thickness T 1 , and/or any other suitable percentage of thickness T 1 ). 
     As shown in  FIG.  4   , coating tool  36  may be used to apply a second layer of liquid crystal material  30 - 2  (e.g., a second portion of guest-host liquid crystal layer  30  of  FIG.  2   ) to convex inner surface of inner substrate  34 . The convex inner surface of inner substrate  34  is covered with transparent conductive electrode  32 , so layer  30 - 2  is applied over transparent conductive electrode  32 . Layer  30 - 2  may have a thickness T 3  which is less than thickness T 1  of  FIG.  2   . Thickness T 3  may be half of thickness T 1  or may be any other suitable thickness such that thickness T 2  plus thickness T 3  is equal to thickness T 1 . 
     After coating substrates  26  and  34  with respective portions  30 - 1  and  30 - 2  of liquid crystal layer  30 , the coated substrates  26  and  34  may be placed in a vacuum assembly, as shown in  FIG.  5   . 
     Vacuum assembly  38  (e.g., a vacuum chamber) of  FIG.  5    may include mating dies  40  and  42 . One die such as die  40  may have a concave surface and the other die such as die  42  may have a corresponding convex surface. The concave surface of die  40  may receive the convex outer surface of substrate  26 , and the convex surface of die  42  may receive the concave outer surface of substrate  34 . Under heat and pressure (e.g., pressure formed by moving dies  40  and  42  together), portions  30 - 1  and  30 - 2  of liquid crystal layer  30  may be pressed against one another to thereby merge and form a homogenous layer of liquid crystal without surface irregularities. If desired, vacuum tool  38  may be a single-sided tool based on a male pressing die or a female vacuum-pull die and/or other vacuum assembly techniques may be used (e.g., tool  38  may have a slumping mold, may perform gravity-based shaping operations, and/or may otherwise be used in forming molded glass layers). The arrangement of  FIG.  5    that shows the use of two mating dies is illustrative. 
     An alternative arrangement for attaching portions  30 - 1  and  30 - 2  of liquid crystal layer  30  is shown in  FIG.  6   . In the example of  FIG.  6   , an adhesive layer such as conductive adhesive layer  44  may be interposed between liquid crystal portions  30 - 1  and  30 - 2  and may be used to attach substrates  26  and  34 . Conductive adhesive layer  44  may be an ultraviolet light cured adhesive that is cured with ultraviolet light from light source  46 , or conductive adhesive layer  44  may be any other suitable type of adhesive layer (e.g., acrylic adhesive, epoxy, etc.). If desired, adhesive  44  may initially be in liquid form so that the adhesive fills gaps between portion  30 - 1  and portion  30 - 2  of layer  30 . The use of adhesive layer  44  may compensate for surface irregularities and/or thickness variations in layers  30 - 1  and  30 - 2  to reduce undesired haze in window  14 . 
     To help reduce undesired light reflections at the interfaces between layers  30 - 1 ,  44 , and  30 - 2 , the refractive index of layer  44  between layers  30 - 1  and  30 - 2  may have a refractive index value that is matched to that of layers  30 - 1  and  30 - 2  (e.g., the refractive index value of layer  44  may differ from the refractive index of layers  30 - 1  and  30 - 2  by less than 0.15, less than 0.1, less than 0.05, or less than 0.03 and the refractive index value of the pre-formed non-uniform layer  60  may differ from the refractive index of layer  70  by less than 0.15, less than 0.1, less than 0.05, or less than 0.03). 
     If desired, conductive adhesive layer  44  may serve as an additional electrode for layers  30 - 1  and  30 - 2 . Control circuitry in device  10  may apply voltages to electrodes  28  and  44  to adjust electric fields applied to liquid crystal layer  30 - 1  and may apply voltages to electrodes  32  and  44  to adjust electric fields applied to liquid crystal layer  30 - 2 . If desired, different electric fields may be applied to layers  30 - 1  and  30 - 2  to achieve different optical characteristics in layers  30 - 1  and  30 - 2 . For example, layer  30 - 1  may exhibit a first amount of light absorption while layer  30 - 2  may exhibit a second amount of light absorption that is different than the first amount of light absorption. This is merely illustrative, however. If desired, layers  30 - 1  and  30 - 1  may exhibit the same amount of light absorption. 
     The foregoing is merely illustrative and various modifications can be made to the described embodiments. The foregoing embodiments may be implemented individually or in any combination.

Metadata:
Filing Date: 20221117
Publication Date: 20241029
Grant Date: 20241029
Priority Date: 20211216
Inventors: MASSCHELEIN, PETER F
KINGMAN, DAVID E
LEE, YUNSEOK
Assignee: APPLE INC
CPC Classifications: [{"code": "G02F1/1334", "inventive": true, "first": false, "tree": "[]"}, {"code": "E06B2003/67395", "inventive": false, "first": false, "tree": "[]"}, {"code": "E06B2009/2464", "inventive": false, "first": false, "tree": "[]"}, {"code": "G02F1/133302", "inventive": true, "first": false, "tree": "[]"}, {"code": "G02F1/133796", "inventive": true, "first": false, "tree": "[]"}, {"code": "G02F1/134363", "inventive": true, "first": false, "tree": "[]"}, {"code": "B60J3/04", "inventive": true, "first": false, "tree": "[]"}, {"code": "E06B3/673", "inventive": true, "first": false, "tree": "[]"}, {"code": "G02F2202/28", "inventive": false, "first": false, "tree": "[]"}, {"code": "E06B9/24", "inventive": true, "first": true, "tree": "[]"}, {"code": "E06B3/673", "inventive": true, "first": false, "tree": "[]"}, {"code": "E06B2003/67395", "inventive": false, "first": false, "tree": "[]"}, {"code": "G02F2202/28", "inventive": false, "first": false, "tree": "[]"}, {"code": "E06B9/24", "inventive": true, "first": false, "tree": "[]"}, {"code": "E06B2009/2464", "inventive": false, "first": false, "tree": "[]"}, {"code": "G02F1/133302", "inventive": true, "first": false, "tree": "[]"}, {"code": "B60J3/04", "inventive": true, "first": false, "tree": "[]"}, {"code": "G02F1/134363", "inventive": true, "first": false, "tree": "[]"}, {"code": "G02F1/133796", "inventive": true, "first": true, "tree": "[]"}, {"code": "G02F2202/28", "inventive": false, "first": false, "tree": "[]"}, {"code": "E06B2009/2464", "inventive": false, "first": false, "tree": "[]"}, {"code": "E06B2003/67395", "inventive": false, "first": false, "tree": "[]"}, {"code": "G02F1/134363", "inventive": true, "first": false, "tree": "[]"}, {"code": "G02F1/133302", "inventive": true, "first": false, "tree": "[]"}, {"code": "E06B9/24", "inventive": true, "first": false, "tree": "[]"}, {"code": "E06B3/673", "inventive": true, "first": false, "tree": "[]"}, {"code": "B60J3/04", "inventive": true, "first": false, "tree": "[]"}, {"code": "G02F1/133796", "inventive": true, "first": true, "tree": "[]"}]
Family ID: 93217113