Abstract: An optical stack includes a substrate, a radio-wave anti-reflection sheet configured to reduce reflection from the optical stack of radio waves at a predetermined operating frequency, and a visible light reflective, infrared light transmissive multilayer optical film disposed between the radio-wave anti-reflection sheet and the substrate. For radiation substantially normally incident on the radio-wave anti-reflection sheet and for a first frequency range at least 20 GHz wide, centered on the predetermined operating frequency, and disposed between about 1 GHz and about 120 GHz, a return loss of the optical stack is asymmetric about the predetermined operating frequency in the first frequency range. The optical stack has a largest return loss S11L in the first frequency range of less than ?10 dB and a difference between the largest return loss S11L and a smallest return loss S11S in the first frequency range is less than about 2 dB.

Abstract: An optical construction (100) includes a lightguide (102), a transmissive reflector (112), and an optical sensor (114). The lightguide (102) includes a first major surface (104) and a second major surface (106) opposite to the first major surface (104). The first major surface (104) includes a first portion (108) and an adjoining second portion (110). The transmissive reflector (112) is disposed adjacent to the first major surface (104) of the lightguide (102). The optical sensor (114) is disposed adjacent to the transmissive reflector (112) opposite to the lightguide (102). The optical sensor (114) is aligned with the first portion (108) of the first major surface (104) of the lightguide (102), such that the optical sensor (114) receives at least a portion of light passing through the first portion (108) of the first major surface (104) and transmitted by the transmissive reflector (112).

Abstract: An optical stack (100) includes a substrate (110), a radio-wave anti-reflection sheet (130) configured to reduce reflection from the optical stack (100) of radio waves at a predetermined operating frequency (f), and a visible light reflective, infrared light transmissive multilayer optical film (120) disposed between the radio-wave anti-reflection sheet (130) and the substrate (110). For radiation substantially normally incident on the radio-wave anti-reflection sheet (130) and for a first frequency range at least 20 GHZ wide, centered on the predetermined operating frequency (f), and disposed between about 1 GHZ and about 120 GHZ, a return loss of the optical stack (100) is asymmetric about the predetermined operating frequency (f) in the first frequency range. The optical stack (100) has a largest return loss S11L in the first frequency range of less than ?10 dB and a difference between the largest return loss S11L and a smallest return loss S11S in the first frequency range is less than about 2 dB.

Abstract: An optical stack (100) includes a substrate (110), a radio-wave anti-reflection sheet (130) configured to reduce reflection from the optical stack (100) of radio waves at a predetermined operating frequency (f), and a visible light reflective, infrared light transmissive multilayer optical film (120) disposed between the radio-wave anti-reflection sheet (130) and the substrate (110). For N radiation substantially normally incident on the radio-wave anti-reflection sheet (130) and for a first frequency range at least 20 GHz wide, centered on the predetermined operating frequency (f), and disposed between about 1 GHz and about 120 GHz, a return loss of the optical stack (100) is asymmetric about the predetermined operating frequency (f) in the first frequency range. The optical stack (100) has a largest return loss S11L in the first frequency range of less than ?10 dB and a difference between the largest return loss S11L and a smallest return loss S11S in the first frequency range is less than about 2 dB.

Abstract: An electronic device (200) includes a liquid crystal display (LCD) panel (204), a cover layer (218), one or more light sources (224), and an optical sensor module (226). The LCD panel (204) receives a contact input associated with a fingerprint of a user. The cover layer (218) includes a first major surface (228) and a second major surface (230) opposite to the first major surface (228), and is disposed on the LCD panel (204). The cover layer (218) defines a first axis (AA?) normal to the first major surface (228). The optical sensor module (226) receives a light from the predetermined fingerprint sensing area (222) to detect the fingerprint. The optical sensor module (226) at least partially overlaps with the predetermined fingerprint sensing area (222) along the plane of the first major surface (228). The optical sensor module (226) defines a second axis (BB?) normal to a surface of the optical sensor module (226).

Abstract: A display system for imaging a user body portion includes a display panel, an optical sensor disposed on the display panel and configured to detect light reflected by the user body portion, and an optical stack disposed between the display panel and the optical sensor. The optical stack includes a first optical reflector and a light collimating film. The light collimating film includes a plurality of substantially coplanar alternating first and second regions. For an incident light, a visible wavelength range, and an infrared wavelength range, and for each of a first incident angle of less than about 5 degrees and a second incident angle of between about 40 degrees and about 70 degrees, the plurality of polymeric layers has an average optical reflectance of greater than about 70% in the visible wavelength range and an optical transmittance of greater than about 30% in the infrared wavelength range.

Abstract: An optical construction (100) includes a lightguide (102), a transmissive reflector (112), and an optical sensor (114). The lightguide (102) includes a first major surface (104) and a second major surface (106) opposite to the first major surface (104). The first major surface (104) includes a first portion (108) and an adjoining second portion (110). The transmissive reflector (112) is disposed adjacent to the first major surface (104) of the lightguide (102). The optical sensor (114) is disposed adjacent to the transmissive reflector (112) opposite to the lightguide (102). The optical sensor (114) is aligned with the first portion (108) of the first major surface (104) of the lightguide (102), such that the optical sensor (114) receives at least a portion of light passing through the first portion (108) of the first major surface (104) and transmitted by the transmissive reflector (112).

Abstract: An electronic device (200) includes a liquid crystal display (LCD) panel (204), a cover layer (218), one or more light sources (224), and an optical sensor module (226). The LCD panel (204) receives a contact input associated with a fingerprint of a user. The cover layer (218) includes a first major surface (228) and a second major surface (230) opposite to the first major surface (228), and is disposed on the LCD panel (204). The cover layer (218) defines a first axis (AA?) normal to the first major surface (228). The optical sensor module (226) receives a light from the predetermined fingerprint sensing area (222) to detect the fingerprint. The optical sensor module (226) at least partially overlaps with the predetermined fingerprint sensing area (222) along the plane of the first major surface (228). The optical sensor module (226) defines a second axis (BB?) normal to a surface of the optical sensor module (226).

Abstract: A housing (185) for an electronic device (170) includes an optical film (100) having an optical transmittance for substantially normally incident light having a band edge separating first and second wavelength ranges, where the first wavelength range extends from about 400 nm to about 700 nm and the second wavelength range is at least about 100 nm wide and disposed between about 800 nm and about 1100 nm. For substantially normally incident light, an average optical reflectance of the optical film is greater than about 90% in the first wavelength range, and an average optical transmittance of the optical film is greater than about 80% in the second wavelength range. For at least one frequency in a range of about 0.1 GHz to about 90 GHz and for substantially normally incident radiation, the optical film transmits at least about 95% of the incident radiation.

Abstract: An optical stack (100) includes an optical diffuser (10) and a first reflective polarizer (40) disposed on the optical diffuser (10). For substantially normally incident light and for nonoverlapping first and second wavelength ranges, the optical diffuser (10) has a first scattering rate R1 for at least one wavelength in the first wavelength range, and a second scattering rate R2 for at least one wavelength in the second wavelength range, such that R1/R2 is greater than or equal to 2. The first reflective polarizer (40) may transmit at least 40% of light for a first polarization state for each wavelength in the first wavelength range, may reflect at least 70% of light for an orthogonal second polarization state for each wavelength in the first wavelength range, and transmit at least 40% of light for each of the first and second polarization states and for each wavelength in the second wavelength range.

Abstract: The present disclosure provides a touch display panel and its controlling method. The touch display panel includes a plurality of first touch electrodes and a plurality of first touch electrode lines arranged on an array substrate, a plurality of second touch electrodes and a plurality of second touch electrode lines arranged on a color filter substrate, and region scanning electrodes. Each first touch electrode line is connected to each first touch electrode, and each second touch electrode line is connected to each second touch electrode. All the first touch electrodes are located at one half of a display region of the touch display panel, and all the second touch electrodes are located at the other half of the display region of the display panel.

Abstract: A grating is provided. The grating includes a first substrate and a second substrate opposite the first substrate, a plurality of first transparent electrodes arranged at equal intervals along a surface of the first substrate and between the first substrate and the second substrate, and a plurality of second transparent electrodes each arranged along a surface of the second substrate and opposite to a respective one of the plurality of first transparent electrodes, and a liquid crystal mixture layer arranged between each pair of the first transparent electrodes and respective second transparent electrodes, wherein a liquid crystal mixture in the liquid crystal mixture layer is switchable between a smectic phase and a cholesteric phase such that the liquid crystal mixture is transparent in the smectic phase and black in the cholesteric phase.

Abstract: A grating is provided. The grating includes a first substrate and a second substrate opposite the first substrate, a plurality of first transparent electrodes arranged at equal intervals along a surface of the first substrate and between the first substrate and the second substrate, and a plurality of second transparent electrodes each arranged along a surface of the second substrate and opposite to a respective one of the plurality of first transparent electrodes, and a liquid crystal mixture layer arranged between each pair of the first transparent electrodes and respective second transparent electrodes, wherein a liquid crystal mixture in the liquid crystal mixture layer is switchable between a smectic phase and a cholesteric phase such that the liquid crystal mixture is transparent in the smectic phase and black in the cholesteric phase.

Abstract: A grating is provided. The grating includes a first substrate and a second substrate opposite the first substrate, a plurality of first transparent electrodes arranged at equal intervals along a surface of the first substrate and between the first substrate and the second substrate, and a plurality of second transparent electrodes each arranged along a surface of the second substrate and opposite to a respective one of the plurality of first transparent electrodes, and a liquid crystal mixture layer arranged between each pair of the first transparent electrodes and respective second transparent electrodes, wherein a liquid crystal mixture in the liquid crystal mixture layer is switchable between a smectic phase and a cholesteric phase such that the liquid crystal mixture is transparent in the smectic phase and black in the cholesteric phase.

Abstract: Embodiments include a display panel that comprises a first substrate, second substrate and liquid crystal layer positioned therebetween. A distance between the first and second substrate in a center region of an effective display region of the display panel is a first distance, and a distance between the first substrate and second substrate in an edge region of the effective display region of the display panel is a second distance; the first distance is greater than the second distance, and the first and second distances have a first difference value, so that an optical path difference in the liquid crystal layer of light rays emitted to the central region of the effective display region is greater than an optical path difference in the liquid crystal layer of light rays emitted to the edge region of the effective display region, and the optical path differences have a preset difference value.

Abstract: The present disclosure provides a touch display panel and its controlling method. The touch display panel includes a plurality of first touch electrodes and a plurality of first touch electrode lines arranged on an array substrate, a plurality of second touch electrodes and a plurality of second touch electrode lines arranged on a color filter substrate, and region scanning electrodes. Each first touch electrode line is connected to each first touch electrode, and each second touch electrode line is connected to each second touch electrode. All the first touch electrodes are located at one half of a display region of the touch display panel, and all the second touch electrodes are located at the other half of the display region of the display panel.

Abstract: An array substrate has at least one array structure, the array structure having a first pixel unit, a second pixel unit and a third pixel unit arranged row-by-row; each of the first pixel unit and the third pixel unit has a single-domain inclining direction, and the second pixel unit has a plurality of domain inclining directions; the single-domain inclining direction of the first pixel unit is different from that of the third pixel unit; the domain inclining direction of the second pixel unit, at a side adjacent to the first pixel unit, is the same as the single-domain inclining direction of the third pixel unit, and the domain inclining direction of the second pixel unit, at a side adjacent to the third pixel unit, is the same as the single-domain inclining direction of the first pixel unit.

Abstract: Embodiments of the invention disclose a transflective liquid crystal panel based on ADS display mode and a display device. Each pixel unit is provided with a transmissive region and a reflective region, a thickness of the liquid crystal layer in the transmissive region is larger than that of liquid crystal layer in the reflective region. Moreover, an optical retardation film and a reflection layer are disposed in a region corresponding to the reflective region; wherein the optical retardation film is adapted for compensating optical retardation caused by a difference in the thicknesses of the liquid crystal layer in the transmissive and reflective regions.

Abstract: An array substrate has at least one array structure, the array structure having a first pixel unit, a second pixel unit and a third pixel unit arranged row-by-row; each of the first pixel unit and the third pixel unit has a single-domain inclining direction, and the second pixel unit has a plurality of domain inclining directions; the single-domain inclining direction of the first pixel unit is different from that of the third pixel unit; the domain inclining direction of the second pixel unit, at a side adjacent to the first pixel unit, is the same as the single-domain inclining direction of the third pixel unit, and the domain inclining direction of the second pixel unit, at a side adjacent to the third pixel unit, is the same as the single-domain inclining direction of the first pixel unit.

Abstract: Embodiments of the invention disclose a transflective liquid crystal panel based on ADS display mode and a display device. Each pixel unit is provided with a transmissive region and a reflective region, a thickness of the liquid crystal layer in the transmissive region is larger than that of liquid crystal layer in the reflective region. Moreover, an optical retardation film and a reflection layer are disposed in a region corresponding to the reflective region; wherein the optical retardation film is adapted for compensating optical retardation caused by a difference in the thicknesses of the liquid crystal layer in the transmissive and reflective regions.