PATENT DOCUMENT

Publication Number: US-10754066-B2
Application Number: US-201514884677-A
Country: US
Kind Code: B2

Title: Electronic device with low reflectance and color matched display border

Abstract:
A display may have an active area in which pixels display images through a transparent display layer. An opaque masking material may be formed in an inactive border area adjacent to the active area. The opaque masking layer may include particles such as carbon black particles to provide the opaque masking layer with a dark appearance. The color of the opaque masking layer may be adjusted by incorporating additional particles such as titanium oxide particles. Particle size for the carbon black particles and the index of refraction of the opaque masking layer may be adjusted to reduce reflectance in the inactive border area. A transparent conductive layer may be supported by the transparent display layer. Index-of-refraction matching layers may be interposed between the transparent conductive layer and the transparent display layer. The opaque masking layer may be interposed between the matching layers in the inactive border area.

Claims:
What is claimed is: 
     
       1. A display having an active area and an inactive border area adjacent to the active area, comprising:
 pixels that display images in the active area; 
 a transparent display layer through which light from the pixels passes; 
 a layer of opaque masking material on the transparent display layer in the inactive border area; 
 a transparent conductive layer on the transparent display layer; 
 a first index-of-refraction matching layer that is interposed between the transparent conductive layer and the transparent display layer in the active area and that has a portion in the inactive border area, and wherein the first index-of-refraction matching layer is interposed between the transparent display layer and the pixels; 
 a second index-of-refraction matching layer that is interposed between the transparent conductive layer and the transparent display layer in the active area and that has a portion in the inactive border area, wherein the layer of opaque masking material is interposed between the portion of the first index-of-refraction matching layer in the inactive border area and the portion of the second index-of-refraction matching layer in the inactive border area and wherein the second index-of-refraction matching layer is interposed between the transparent display layer and the pixels; and 
 a third index-of-refraction matching layer, wherein the transparent conductive layer is interposed between the third index-of-refraction matching layer and the second index-of-refraction matching layer. 
 
     
     
       2. The display defined in  claim 1  wherein the first index-of-refraction matching layer comprises niobium oxide. 
     
     
       3. The display defined in  claim 2  wherein the second index-of-refraction matching layer comprises silicon oxide. 
     
     
       4. The display defined in  claim 1  wherein the opaque masking layer comprises a polymer containing carbon black particles. 
     
     
       5. The display defined in  claim 4  wherein the carbon black particles are at least 150 nm in diameter and wherein the opaque masking layer comprises titanium oxide. 
     
     
       6. The display defined in  claim 5  wherein the opaque masking layer has an index of refraction of less than 1.6. 
     
     
       7. The display defined in  claim 5  wherein the transparent conductive layer comprises indium tin oxide. 
     
     
       8. A display having an active area and an inactive border area surrounding the active area, comprising:
 pixels that displays images in the active area; 
 a transparent display layer through which light from the pixels passes; 
 a layer of opaque masking material in the inactive border area; 
 a transparent conductive layer on the transparent display layer; 
 a first index-of-refraction matching layer that is interposed between the transparent conductive layer and the transparent display layer in the active area and that has a portion in the inactive border area; and 
 a second index-of-refraction matching layer that is interposed between the transparent conductive layer and the transparent display layer in the active area and that has a portion in the inactive border area, wherein the layer of opaque masking material is interposed between the portion of the first index-of-refraction matching layer in the inactive border area and the transparent display layer in the inactive border area, wherein the portion of the first index-of-refraction matching layer in the inactive border area layer is interposed between the portion of the second index-of-refraction matching layer in the inactive border area and the layer of opaque masking material, and wherein the opaque masking layer is a layer of polymer containing carbon black particles and titanium oxide particles. 
 
     
     
       9. The display defined in  claim 8  wherein the carbon black particles have diameters of at least 150 nm. 
     
     
       10. The display defined in  claim 9  wherein the opaque masking layer has an index of refraction of less than 1.6. 
     
     
       11. The display defined in  claim 10  wherein the titanium oxide particles are present in the polymer at a concentration of between 5% and 20% by weight relative to the carbon black particles. 
     
     
       12. An electronic device, comprising:
 a housing; 
 a display mounted in the housing, wherein the display has an active area and an inactive area, wherein the display has a display layer and has pixels that display images through the display layer in the active area; 
 a layer of opaque masking material on the display layer in the inactive area; 
 a touch sensor electrode supported by the display layer, wherein the touch sensor electrode has a first portion in the active area and a second portion in the inactive area; 
 a first index-of-refraction matching layer that is interposed between the first portion of the touch sensor electrode and the display layer in the active area and that has a portion in the inactive area that is interposed between the display layer and the layer of opaque masking material; and 
 a second index-of-refraction matching layer that is interposed between the first portion of the touch sensor electrode and the display layer in the active area and that has a portion in the inactive area that is interposed between the layer of opaque masking material and the second portion of the touch sensor electrode, wherein the layer of opaque masking material is interposed between the portion of the first index-of-refraction matching layer in the inactive area and the portion of the second index-of-refraction matching layer in the inactive area. 
 
     
     
       13. The electronic device defined in  claim 12 , further comprising:
 an additional index-of-refraction matching layer, wherein the touch sensor electrode is interposed between the additional index-of-refraction matching layer and the second index-of-refraction matching layer. 
 
     
     
       14. The display defined in  claim 13  wherein the first index-of-refraction matching layer comprises first and second sublayers of different materials. 
     
     
       15. The display defined in  claim 14  wherein the second index-of-refraction matching layer comprises at least two sublayers of different materials. 
     
     
       16. The display defined in  claim 12  wherein the touch sensor electrode comprises indium tin oxide and wherein the first index-of-refraction matching layer comprises an inorganic material. 
     
     
       17. The display defined in  claim 16  wherein the inorganic material comprises niobium oxide. 
     
     
       18. The display defined in  claim 17  wherein the second index-of-refraction matching layer comprises silicon oxide, wherein the opaque masking material comprises carbon black particles, wherein the carbon black particles have diameters of at least 150 nm, and wherein the opaque masking material further comprises titanium oxide. 
     
     
       19. The display defined in  claim 12  wherein the first index-of-refraction matching layer comprises an inorganic material. 
     
     
       20. The display defined in  claim 1 , wherein the transparent display layer comprises a display cover layer that is formed from a material selected from the group consisting of: glass, plastic, and sapphire.

Description:
This application claims the benefit of provisional patent application No. 62/209,023 filed on Aug. 24, 2015, which is hereby incorporated by reference herein in its entirety. 
    
    
     BACKGROUND 
     This relates generally to electronic devices, and, more particularly, to electronic devices with displays. 
     Electronic devices such as laptop computers, cellular telephones, and other equipment are often provided with displays. Displays contain arrays of pixels that present images to a user. The border of a display may be covered with an opaque masking material such as black ink to hide internal component in the display from view. 
     Challenges can arise in forming electronic devices with displays. If care is not taken, the black ink in an opaque display border may be overly reflective or may have an unwanted color. These issues may detract from the appearance of a display and an electronic device in which the display is mounted. 
     It would be desirable to be able to provide improved border structures for electronic device displays. 
     SUMMARY 
     An electronic device may be provided with a housing and a display mounted in the housing. An array of pixels may display images through a transparent display layer in an active area of the display. An inactive area may border the active area. 
     An opaque masking material may be formed in the inactive border area. The opaque masking layer may include particles such as carbon black particles to provide the opaque masking layer with a dark appearance. The color of the opaque masking layer may be adjusted by incorporating additional particles such as titanium oxide particles. Particle size for the carbon black particles and the index of refraction of the opaque masking layer may be adjusted to reduce reflectance in the inactive border area. 
     A transparent conductive layer may be supported by the transparent display layer. Index-of-refraction matching layers may be interposed between the transparent conductive layer and the transparent display layer. The opaque masking layer may be interposed between the matching layers in the inactive border area, so that some of the index-of-refraction matching material lies between the opaque masking layer and the transparent display layer to help adjust reflectance and color for the opaque masking layer. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is a schematic diagram of an illustrative electronic device having a display in accordance with an embodiment. 
         FIG. 2  is a perspective view of an illustrative device having an active display area surrounded by an inactive border in accordance with an embodiment. 
         FIG. 3  is a cross-sectional side view of an illustrative electronic device having a display in accordance with an embodiment. 
         FIGS. 4 and 5  are cross-sectional side views of inactive border portions of displays in accordance with embodiments. 
         FIG. 6  is a graph showing how the formulation of an opaque masking layer material can be adjusted to adjust masking layer color in accordance with an embodiment. 
         FIG. 7  is a graph showing how particle size (particle diameter) in an opaque masking layer can be adjusted to control reflectance in accordance with an embodiment. 
     
    
    
     DETAILED DESCRIPTION 
     An illustrative electronic device of the type that may be provided with a display having an opaque border is shown in  FIG. 1 . Electronic device  10  may be a computing device such as a laptop computer, a computer monitor containing an embedded computer, a tablet computer, a cellular telephone, a media player, or other handheld or portable electronic device, a smaller device such as a wrist-watch device, a pendant device, a headphone or earpiece device, a device embedded in eyeglasses or other equipment worn on a user&#39;s head, or other wearable or miniature device, a television, a computer display that does not contain an embedded computer, a gaming device, a navigation device, an embedded system such as a system in which electronic equipment with a display is mounted in a kiosk or automobile, equipment that implements the functionality of two or more of these devices, or other electronic equipment. 
     As shown in  FIG. 1 , electronic device  10  may have control circuitry  16 . Control circuitry  16  may include storage and processing circuitry for supporting the operation of device  10 . The storage and processing circuitry may include storage such as hard disk drive storage, nonvolatile memory (e.g., flash memory or other electrically-programmable-read-only memory configured to form a solid state drive), volatile memory (e.g., static or dynamic random-access-memory), etc. Processing circuitry in control circuitry  16  may be used to control the operation of device  10 . The processing circuitry may be based on one or more microprocessors, microcontrollers, digital signal processors, baseband processors, power management units, audio chips, application specific integrated circuits, etc. 
     Input-output circuitry in device  10  such as input-output devices  18  may be used to allow data to be supplied to device  10  and to allow data to be provided from device  10  to external devices. Input-output devices  18  may include buttons, joysticks, scrolling wheels, touch pads, key pads, keyboards, microphones, speakers, tone generators, vibrators, cameras, light-emitting diodes and other status indicators, data ports, etc. Input-output devices  18  may include sensors such as an ambient light sensor, a capacitive proximity sensor, a light-based proximity sensor, a magnetic sensor, an accelerometer, a force sensor, a touch sensor, a temperature sensor, a pressure sensor, a compass, a microphone or other sound sensor, or other sensors. A user can control the operation of device  10  by supplying commands through input-output devices  18  and may receive status information and other output from device  10  using the output resources of input-output devices  18 . 
     Input-output devices  18  may include one or more displays such as display  14 . Display  14  may be a touch screen display that includes a touch sensor for gathering touch input from a user or display  14  may be insensitive to touch. A touch sensor for display  14  may be based on an array of capacitive touch sensor electrodes, acoustic touch sensor structures, resistive touch components, force-based touch sensor structures, a light-based touch sensor, or other suitable touch sensor arrangements. Display  14  may be an organic light-emitting diode display or other light-emitting diode display, a liquid crystal display, a plasma display, an electrowetting display, an electrophoretic display, or other suitable display. 
     Display  14  may include an array of pixels surrounded by an inactive border. A perspective view of electronic device  10  in an illustrative configuration in which display  14  has an inactive border is shown in  FIG. 2 . As shown in  FIG. 2 , display  14  may include an array of pixels such as pixels  20 . Pixels  20  may be organized in rows and columns and may be used in displaying images for a user in active area AA of display  14 . Inactive border area IA of display  14  may run along one or more of the edges of active area AA. In the example of  FIG. 2 , inactive area IA runs along all four peripheral edges of rectangular active area AA and has a rectangular ring shape that surrounds active area AA. 
     Display  14  may be mounted in housing  12 . Housing  12 , which may sometimes be referred to as an enclosure or case, may be formed of plastic, glass, ceramics, fiber composites, metal (e.g., stainless steel, aluminum, etc.), other suitable materials, or a combination of any two or more of these materials. Housing  12  may be formed using a unibody configuration in which some or all of housing  12  is machined or molded as a single structure or may be formed using multiple structures (e.g., an internal frame structure, one or more structures that form exterior housing surfaces, etc.). Housing  12  may have a single body (e.g., when device  10  is a cellular telephone, tablet computer, wristwatch device, etc.) or may have multiple body portions that are coupled by a hinge (e.g., in a laptop computer). Housing  12  may also have other shapes, if desired. 
       FIG. 2  is a cross-sectional side view of device  10  of  FIG. 1  taken along line  32  and viewed in direction  34 . As shown in  FIG. 2 , device  10  may include electrical components  22 . Electrical components  22  may include integrated circuits, sensors, connectors, batteries, audio circuits, speakers, microphones, and other input-output devices and control circuitry. Electrical components  22  may be mounted on one or more substrates such as substrate  30 . Substrates such as substrate  30  may be formed from plastic, glass, ceramic, other dielectric materials, printed circuits (e.g., rigid printed circuits formed from fiberglass-filled epoxy or other rigid printed circuit material and/or flexible printed circuits formed from flexible layers of polyimide or sheets of other polymer substrate materials), or other substrate material. 
     Display  14  may have an outermost layer such as display cover layer  26 . Layer  26  may be formed from a transparent material that helps protect display  14  such as a layer of transparent plastic, clear glass, sapphire, or other protective display layer. Display module  28  (sometimes referred to as display structures or display layers) may contain pixels such as pixels  20 . Pixels  20  may be arranged in a rectangular array of rows and columns or other suitable layouts to display images for a user of device  10 . Pixels  20  produce images in active area AA of display  14 . Inactive area IA of display  14  does not contain pixels  20  and does not produce images. To block potentially unsightly interior components from view in device  10 , the underside of the edges of display cover layer  26  may be coated with a layer of opaque masking material  24 . Opaque masking material  24  may have the shape of a rectangular ring that surrounds a central rectangular active area AA or may have other suitable shapes. Opaque masking material  24  may be formed from a layer of black or white ink, metal, opaque plastic, or other opaque materials. Configurations in which opaque masking material  24  is formed from black material such as a polymer containing carbon black particles may sometimes be described herein as an example. 
     Touch sensor structures for display  14  may be formed on the underside of display cover layer  26  and/or may be attached to display cover layer  26  using adhesive. Capacitive touch sensor structures may, as an example, be formed from an array of transparent conductive capacitive electrodes on display cover layer  26 . Other types of touch sensor may be used in device  10 , if desired. Configurations in which touch sensor structures are patterned on the inner surface of display cover layer  26  may sometimes be described herein as an example. Display layers  28  may be attached to display cover layer  26  (e.g., a touch sensor formed from patterned electrodes on layer  26 ) using adhesive or other attachment mechanisms. 
     Sunlight and other ambient light may reflect from display  14 . Excessive light reflections may interfere with the ability of a user to view images on display  14  and may have an adverse impact on the appearance of opaque masking layer  24  in inactive area IA. It may therefore be desirable to minimize these reflections. 
     Reflections arise due to discontinuities in the indices of refraction of the layers that make up display  14  both in active area AA and in inactive area IA. To reduce reflections in both active area AA and in inactive area IA, index-of-refraction matching layer structures of the type shown in  FIGS. 4 and 5  may be used. 
     Consider, as an example, the arrangement of  FIG. 4 . As shown in  FIG. 4 , display  14  may include display cover layer  26 . Display module  28  (not shown in  FIG. 4 ) may be attached to the inner surface of display cover layer  26  in active area AA (e.g., using adhesive). 
     Touch sensor structures for a capacitive touch sensor in device  10  (e.g., touch sensor electrodes) may be formed from patterned areas of transparent conductive layer  50 . Transparent conductive layer  50  may be formed from a conductive material such as indium tin oxide (as an example). Metal traces  52  may be formed in inactive area IA to from electrical connections to the electrodes of layer  50 . If desired, display driver circuitry and other components for display  14  may be formed in inactive area IA. The presence of opaque masking layer  24  in area IA may help prevent a viewer from viewing display driver circuitry and other internal device components through inactive area IA of display cover layer  26 . 
     The index of refraction of layer  26  may differ from the index of refraction of layer  50 . Similarly, the index of refraction of layer  50  may differ from the index of refraction of the display module layers attached to the inner surface of layer  50  in active area AA. As an example, the index of refraction of layer  50  may be about 1.9, whereas the indices of refraction of layer  26  and the structures of display module  28  may be about 1.5. The index of refraction of opaque masking material layer  24  may be about 1.6-1.7 or, in some configurations, may be less than 1.6. 
     To help reduce reflections from index-of-refraction discontinuities in display  14 , display  14  may incorporate one or more index-of-refraction matching layers such as layers  54 ,  56 , and  58 . The presence of index matching layers  54 ,  56 , and  58  may help reduce reflections from the interface between layer  50  and adjacent layers with disparate index-of-refraction values. In the arrangement of  FIG. 4 , at least some index matching material (e.g., a portion of index matching layer  54  in inactive area IA) is interposed between masking layer  24  and display cover layer  26  and can help reduce reflections from masking layer  24  in inactive area IA. The thicknesses of layers  54 ,  56 , and  58  (e.g., thickness of about 5 nm to 5 microns) and the index-of-refraction values of layers  54 ,  56 , and  58  (e.g., index values of about 1.5 to 2.5) may be selected to minimize reflections from display  14  at visible light wavelengths and viewing angles of interest (e.g., viewing angles of 0-70°, viewing angles of above 30°, viewing angles of less than 90°, or other suitable angles). 
     Index matching layers  54 ,  56 , and  58  may be formed from organic and/or inorganic materials. As an example, index matching layers  54 ,  56 , and  58  may be formed from inorganic layers of material such as oxides, nitrides, oxynitrides, silicon oxide, silicon nitride, silicon oxynitride, metal oxides, niobium oxide (e.g., Nb 2 O 5 ), titanium nitride, zirconium oxide, titanium oxide, tantalum oxide, aluminum oxide, germanium oxide, mica, etc. If desired, layers  54 ,  56 , and  58  may be formed by incorporating nanoparticles of these inorganic materials and/or other materials into a polymer binder. Layers  54 ,  56 , and  58  may be formed using gravure coating, spin coating, slit coating, spray coating, inkjet coating, or other coating techniques (e.g., other coating techniques suitable for depositing polymer coating layers and/or polymer layers that include inorganic nanoparticles). Inorganic materials for layers  54 ,  56 , and  58  may be deposited using sputtering, evaporation, or other techniques. As one example, layers  54  and  56  may be formed by sputter deposition of inorganic materials and layer  58  may be a wet coated polymer with embedded nanoparticles. 
     Layers  54 ,  56 , and  58  may each be formed from a single layer of material or may be formed from two or more layers of material. As an example, layer  54  may be formed from a first layer such as layer  54 A (e.g., a niobium oxide layer or other suitable layer) and a second layer such as layer  54 B (e.g., a silicon oxide layer or other suitable layer) and layer  56  may be formed from a first layer such as layer  56 A (e.g., a silicon oxide layer or other suitable layer) and a second layer such as layer  56 B (e.g., a niobium oxide layer or other suitable layer). As another example, layer  54  may be formed from a single higher-index layer (e.g., a niobium oxide layer of 10 nm in thickness or other suitable layer) and layer  56  may be formed from a single lower-index layer (e.g., a silicon oxide layer of 35 nm in thickness or other suitable layer). Other combinations of materials may be used in forming layers  54  and  56 , if desired. Optional passivation layer  62  may be used to help protect metal layer  52 . Layer  62  may be formed from a polymer, from an inorganic material such as silicon oxide, or other hard dielectric. 
     With the illustrative configuration of  FIG. 4 , the layer of index matching material between layer  50  and substrate  26  in active area AA includes at least two sublayers: layer  54  and layer  56 . In inactive area IA, this layer of index matching material is split into two parts: layer  54  is formed on one side of layer  24  and layer  56  is formed on an opposing side of layer  24 . Layer  54  is interposed between substrate  26  and layer  24  and helps reduce reflections from layer  24  in inactive area IA while also helping to match the color of layer  24  in inactive area IA to the color of display  14  in active area AA. If desired, the properties of layer  54  in inactive area IA may be selected to form an antireflection coating in inactive area IA, to achieve color stability at one or more different viewing angles, to form infrared cut and/or ultraviolet light cut filters in inactive area IA, or to form other desired optical structures overlapping layer  24 . At the same time, the properties of layer  54 ,  56 , and  58  in active area AA can be selected to adjust reflections, color performance at one or more viewing angles, to form infrared cut and/or ultraviolet light cut filters in active area AA, etc. 
     In the illustrative configuration of  FIG. 5 , index matching layers  54  and  56  are formed on the inner side of layer  24 , so that layer  24  is interposed between layer  54  and substrate  26  in inactive area IA. To reduce reflections from layer  24  in inactive area IA, the material used to form layer  24  may be configured to have an index of refraction close to that of substrate  26 . As an example, if the index of refraction of layer  26  is 1.5, the index of refraction of layer  24  may be 1.5 to 1.6, may be 1.5 to 1.55, may be less than 1.7, less than 1.65, less than 1.6, less than 1.55, or other suitable value. The difference between the index of refraction of layer  24  and layer  26  may be less than 10%, less than 2%, less than 5%, or less than 1% (as examples). 
     It may be desirable for layer  24  to have a bluish black appearance. A material such as titanium oxide may be incorporated into layer  24  to adjust the appearance of layer  24 . Layer  24  may be formed from a polymer binder. A mixture of two different types of particles may be used in adjusting the color of layer  24 . With one illustrative configuration, layer  24  is a polymer layer that includes a mixture of black particles such as carbon black particles and bluish black particles such as titanium oxide particles.  FIG. 6  is a graph showing how the color of layer  24  may be adjusted between black and bluish black by adjusting the fraction by weight of titanium oxide particles relative to carbon black particles in a polymer binder. At titanium oxide weight fractions of about 5-20%, layer  24  may have an attractive bluish black appearance. Other mixtures of titanium oxide and carbon black particles in a polymer binder forming layer  24  may be used, if desired. 
     To reduce reflectance, it may be desirable to enhance the particle size (particle diameter) of the carbon black particles in layer  24 . Particles that are about 50 nm in size may result in a relatively high reflectance (e.g., 6.5%, as shown in the graph of  FIG. 7 ), whereas larger particles (e.g., particles that are 150-250 nm in size, that are about 200 nm in size, that are more than 225 nm in size, that have diameters of at least 150 nm, etc.) may reduce the reflectance of layer  24  (e.g., to about 4.5%, as shown in the graph of  FIG. 7 , which is 0.5% above the expected reflectance of layer  24  due to the presence of overlapping glass layer  26 ). 
     If desired, layer  24  may be formed from a low index of refraction material (e.g., less than 1.6, less than 1.55, etc.), may use opaque particles formed from a mixture of carbon black and other pigments such as titanium oxide as described in connection with  FIG. 6 , may use an enhanced carbon black particle size (e.g., diameters of more than 150 nm or other suitable diameter), and/or may use a split index-matching-layer arrangement of the type described in connection with  FIG. 4 . Moreover, layers  54  and  56  may, if desired, both be formed between layer  24  and layer  26  to help reduce reflections and achieve a desired color in inactive area IA. The arrangements described in connection with  FIGS. 4, 5, 6, and 7  are merely illustrative. 
     The foregoing is merely illustrative and various modifications can be made by those skilled in the art without departing from the scope and spirit of the described embodiments. The foregoing embodiments may be implemented individually or in any combination.

Metadata:
Filing Date: 20151015
Publication Date: 20200825
Grant Date: 20200825
Priority Date: 20150824
Inventors: TUNG, CHUN-HAO
ZHAO, QIAN
KANG, SUNGGU
ZHONG, JOHN Z.
Assignee: APPLE INC
CPC Classifications: [{"code": "G02F1/133388", "inventive": false, "first": false, "tree": "[]"}, {"code": "G02F1/133388", "inventive": false, "first": false, "tree": "[]"}, {"code": "G06F3/0443", "inventive": true, "first": false, "tree": "[]"}, {"code": "G02B5/003", "inventive": true, "first": false, "tree": "[]"}, {"code": "G02F1/133512", "inventive": false, "first": false, "tree": "[]"}, {"code": "G02B1/115", "inventive": true, "first": true, "tree": "[]"}, {"code": "G02B5/003", "inventive": true, "first": false, "tree": "[]"}, {"code": "G02F1/133512", "inventive": false, "first": false, "tree": "[]"}, {"code": "G02B1/115", "inventive": true, "first": true, "tree": "[]"}, {"code": "G06F3/0443", "inventive": true, "first": false, "tree": "[]"}, {"code": "G02B5/003", "inventive": true, "first": false, "tree": "[]"}, {"code": "G02F2001/133388", "inventive": false, "first": false, "tree": "[]"}, {"code": "G02F1/133512", "inventive": false, "first": false, "tree": "[]"}, {"code": "G06F3/044", "inventive": true, "first": false, "tree": "[]"}, {"code": "G02B1/115", "inventive": true, "first": true, "tree": "[]"}]
Family ID: 58103497