A fingerprint sensing device includes a first substrate, a sensing element layer, a second substrate, a micro-structure layer, and a spacer layer. The sensing element layer is located on the first substrate and includes multiple sensing elements. The second substrate is located on the sensing element layer. The micro-structure layer is located between the second substrate and the sensing element layer, and includes multiple micro-lens structures and multiple dummy structures. Orthogonal projections of the micro-lens structures on the first substrate overlap orthogonal projections of the sensing elements on the first substrate. The spacer layer is located between the second substrate and the sensing element layer, and includes multiple main spacers. Each of the main spacers covers at least one of the dummy structures.

Provided is a composition with which a film that allows transmission of infrared light in a state where noise generated from visible light is small can be formed. In addition, provided are a film, a laminate, an infrared transmitting filter, a solid image pickup element, and an infrared sensor. This composition includes: a coloring material that allows transmission of infrared light and shields visible light; an infrared absorber; and a curable compound, in which the infrared absorber includes a material that shields light in a wavelength range of longer than 1000 nm and 1200 nm or shorter. In the composition, a ratio A/B of a minimum value A of an absorbance of the composition in a wavelength range of 400 to 1100 nm to a maximum value B of an absorbance of the composition in a wavelength range of 1400 to 1500 nm is 4.5 or higher.

A speed sensor, a device for measuring a speed, and a method for measuring a speed are provided. The speed sensor includes: an imaging device; a liquid crystal lens on a side of the imaging device; and a controller configured to: apply different voltages to the liquid crystal lens, obtain, via the imaging device, images of a reference object formed through the liquid crystal lens under the different voltages, control, based on information of the images, the liquid crystal lens to realize focus for multiple times for the reference object, obtain a voltage that is correspondingly applied to the liquid crystal lens when each of the multiple times of focus is realized, and calculate a speed based on the voltages.

A liquid crystal display device includes a first liquid crystal display panel including a first light-transmitting substrate (thickness T2≤0.3 mm), a substrate, a first liquid crystal, a first polarizing plate having a second main surface that is adhered to the first light-transmitting substrate; an adhering layer provided on a first main surface of the first polarizing plate; and a second light-transmitting substrate (thickness T3≤0.3 mm) adhered to the first main surface by the adhering layer (thickness T1≤0.15 mm). An adhesion parameter α is 1.04 or less when a maximum height of an unevenness of the first main surface 0.0005 mm or less, and the adhesion parameter α is 0.43 or less when the maximum height of the unevenness of the first main surface is greater than 0.0005 mm and 0.001 mm or less.

A display apparatus including a first substrate, a first electrode, a second substrate, a first microlens layer, a second microlens layer, a second electrode, a blocking wall structure, an electrophoresis medium, and multiple particles. The first electrode is disposed on the first substrate. The first microlens layer, having multiple first microlenses, is disposed on the second substrate. The second microlens layer, having multiple second microlenses, is disposed on the first microlens layer. The second electrode is disposed on the second microlens layer. The blocking wall structure is at least disposed between the first electrode and the second electrode and has an accommodating space corresponding to the first electrode. The electrophoresis medium is disposed in the accommodating space. The first microlens layer and the second microlens layer are disposed between the second substrate and at least a portion of the electrophoresis medium. The particles are mixed within the electrophoresis medium.

Described are examples of adjustable focus glasses formed using liquid crystal. A pair of adjustable focus glasses can include a frame and two lenses arranged on the frame. In some examples, at least one of the two lenses is a lens assembly that includes a plano-concave lens, a Fresnel lens, and a liquid crystal layer between the plano-concave lens and the Fresnel lens. The plano-concave lens includes a planar surface and an opposing concave surface. The Fresnel lens includes a Fresnel surface and an opposing convex surface. The planar surface and the Fresnel surface face the liquid crystal layer. The focus position of the lens assembly can be adjusted through changing the refractive index of the liquid crystal layer, using appropriate control signals from an electronic controller. This conveniently allows the adjustable focus glasses to be multi-purpose and suitable for correcting both myopia and hyperopia.

The purpose is to suppress a temperature rise in the LED and the driver IC for a reliable transparent liquid crystal display device. An example of concrete structure to attain the purpose is: A display area is formed in an area where the TFT substrate and the counter substrate overlap, a terminal area is formed in an area where the TFT substrate and the counter substrate do not overlap, an LED is disposed in the terminal area opposing to a side surface of the counter substrate, the LED is connected to a printed wiring substrate, a driver IC to drive the liquid crystal display device is disposed in the terminal area, a metal plate is disposed between the driver IC and the printed wiring substrate, the metal plate contacts the printed wiring substrate via a first heat dissipation sheet, and contacts the driver IC via a second heat dissipation sheet.

The present disclosure contains embodiments of an apparatus, system and method designed to facilitate learning or efficient multitasking involving movement and solar energy where users' movement devices process or respond to different stimuli to facilitate users moving while learning, working, or participating in a simulation. In some embodiments this may be accomplished with the aid of a circular treadmill, spherical walkway, or combinable modular trackpads that may be linked to allow a user to lay the apparatus in a path suited for a plurality of environments. The embodiments of the disclosure involve the user moving while processing information and receiving feedback, assistance related to that movement, processing, or any combination thereof while combining the motion of the movement device with the feedback loop sent from sensor relays a user may receive an optimal experience for learning while moving. Some embodiments make efficient use of solar energy for classroom education management.

An electronic device may be provided with a display mounted in a housing. The display may have an array of display pixels that provide image light to a user. The array of display pixels may form an active display structure with a rectangular shape. The rectangular active display structure may be surrounded by an inactive border region. Optical structures such as upper structures formed from a sheet of glass and lower optical structures that lie beneath the sheet of glass may be configured to bend light from the display pixels along the periphery of the active display structure. The upper optical structures may have an area that is larger than the area of the active display structure, so that the presence of the optical structures may serve to enlarge the apparent size of the display. The lower and upper optical structures may have curved surfaces for bending the light.

According to one embodiment, a display device includes a display panel including a first substrate including a first transparent substrate having a first main surface, a first opposite and a side surface, a second substrate including a second transparent substrate having a second main surface and a second opposite surface, and a liquid crystal layer located between the first substrate and the second substrate, a light emitting element opposed to the side surface, a third transparent substrate, and a transparent layer located between the display panel and the third transparent substrate and having a second refractive index that is lower than a first refractive index.