Abstract: Provided is a display device that has a photodetection element in a pixel, and has an input function that is not dependent on the light environment. The display device includes a photosensor in a pixel region. The photosensor includes a first sensor pixel circuit that outputs a sensor signal that corresponds to charge accumulated in an accumulation period when a light source for the sensor is lit, and a second sensor pixel circuit that outputs a sensor signal that corresponds to charge accumulated in an accumulation period when the light source is extinguished.

Abstract: Disclosed is a display device that can compensate for variations of light-detecting element while securing a wide dynamic range of light sensors. This is a display device equipped with light sensors having operation modes for one frame period, which are: a sensor driving mode for obtaining sensor signals, a first correction data acquisition mode for obtaining a first correction data, and a second correction data acquisition mode for obtaining a second correction data. This display device further includes a memory that stores light sensor signal levels obtained, under a controlled ambient environmental condition, by driving the light sensors in the above-mentioned three modes as offset elimination data. A signal-processing circuit uses the first correction data and the second correction data, and the light sensor signal level corrected with the offset elimination data to correct the light sensor signal obtained in the sensor driving mode.

Abstract: Provided is a display device that has a photodetection element in a pixel and can automatically correct a photosensor signal during operation, while resolving offset error with respect to the true black level or white level. As operation modes, a sensor row driver (5) has: (a) a sensor drive mode in which a sensor drive signal of a first pattern is supplied, and a photosensor signal that corresponds to the amount of light received by the photosensor is output to a signal processing circuit (8), and (b) a correction data acquisition mode in which a sensor drive signal of a second pattern that is different from the first pattern is supplied, and a correction photosensor signal level that corresponds to the case where the photosensor detected a black level or a white level is acquired. The photosensor signal levels obtained in the two modes while the ambient environment is controlled to a predetermined condition are stored in a memory.

Abstract: Provided is a display device that is capable of ensuring a wide dynamic range of an optical sensor even in the case where an offset due to ambient temperature changes is compensated with use of an output of a reference element. The display device has optical sensors in a pixel region of an active matrix substrate (100), wherein the optical sensors include a photodetecting sensor which outputs a sensor signal according to an amount of received light, and a reference sensor which has a configuration obtained by adding a light shielding film to the photodetecting sensor and outputs a sensor signal according to an offset component.

Abstract: To provide a display device having an input function that is not dependent on the light environment, multiple sensor pixel circuits that detect light in a specified detection period and hold the light amount when not in the specified detection period are disposed in a pixel region. In a frame in which input is performed using the sensor pixel circuits, a backlight is lit one time for a time in a frame period, and a first detection period and a second detection period are set one time each in the frame period. The difference between the light amount in the first detection period and the light amount in the second detection period is obtained using a difference circuit. The backlight is in an extinguished state at the beginning of the first detection period, and lighting of the backlight is started at a time during the first detection period.

Abstract: A liquid crystal display device is provided with a liquid crystal panel 20 including a plurality of optical sensors, a white backlight 31, and an infrared backlight 32. The infrared backlight 32 is turned on and off with predetermined timings. One part of the optical sensors detect light at the time of turn-on of the infrared backlight 32, and the other part of the optical sensors detect light at the time of turn-off of the infrared backlight 32. One part of the optical sensors is specified as operating optical sensors. A drive circuit of the liquid crystal panel 20 includes a black insertion unit 11, and drives the liquid crystal panel 20 so as to partially perform black display corresponding to the operating optical sensors. This widens an effective region of the optical sensor included in the display device.

Abstract: A liquid crystal display panel includes a liquid crystal panel having a plurality of pixels; a microlens array provided on a light-incident side of the liquid crystal panel; a first polarizing plate and a first optical compensation element provided on a light-outgoing side of the liquid crystal panel; and a second polarizing plate and a second optical compensation element provided on a light-incident side of the microlens array. The retardation of the first optical compensation element along the thickness direction is greater than the retardation of the second optical compensation element along the thickness direction.

Abstract: A liquid crystal display device of high image quality is provided at a low cost, in which the viewing angle is restricted only in a specific direction. A liquid crystal display device of the present invention, which has a plurality of pixels in a matrix arrangement, includes: a first substrate; a second substrate; a liquid crystal layer interposed between the first substrate and the second substrate; and a plurality of microlenses provided on a surface of the first substrate which is opposite to the liquid crystal layer, the microlenses being arranged so as to correspond to the plurality of pixels, and each of the microlenses having a curved surface configured to collect incoming light, wherein d satisfies the following relationship: d>p.((2n)2?1)½ where d is a thickness of the first substrate, p is an arrangement pitch of the plurality of pixels, and n is a refractive index of the major material of the first substrate.

Abstract: Decrease in resolution is minimized even in a photosensor including a plurality of receivers. In a photosensor-equipped display device including a plurality of photosensor assemblies in a display region that displays an image, each of the photosensor assemblies includes: a plurality of sensor apertures (18a-18c) that allow light to enter the display device through a display surface for the image in the display region; and a plurality of light receivers (D1-D3) provided below the respective sensor apertures (18a-18c) for receiving light entering the display device through the sensor apertures (18a-18c) and converting the light into an electric signal, and the plurality of sensor apertures (18a-18c) and the plurality of light receivers (D1-D3) are arranged in at least one direction, and at least one (18a, 18c) of the plurality of sensor apertures (18a-18c) that is located outward is displaced inward relative to at least one of the light receivers (D1-D3) that is located below that at least one sensor aperture.

Abstract: Provided is a display device that can determine an event in accordance with an input operation without using a complex circuit configuration for image processing by simplifying a difference image processing. The display device is provided with a driver circuit for outputting a first control signal, which indicates a first detection period including an ON period of a light source, and a second control signal, which indicates a second detection period not including the ON period of the light source, and performing reset and read-out operations for sensor pixel circuits.

Abstract: To provide a display device having an input function that is not dependent on the light environment, multiple sensor pixel circuits that detect light in a specified detection period and hold the light amount when not in the specified detection period are disposed in a pixel region. In a frame in which input is performed using the sensor pixel circuits, a backlight is lit one time for a time in a frame period, and a first detection period and a second detection period are set one time each in the frame period. The difference between the light amount in the first detection period and the light amount in the second detection period is obtained using a difference circuit. The backlight is in an extinguished state at the beginning of the first detection period, and lighting of the backlight is started at a time during the first detection period.

Abstract: A plurality of sensor pixel circuits are disclosed for detecting a difference between an amount of light when a backlight is turned on and an amount of light when the backlight is turned off are arranged in a pixel region. The backlight is turned on and off a plurality of times, respectively, in a one-frame period. Each of reset for the sensor pixel circuits and read from the sensor pixel circuits is performed in parallel, each in a line sequential manner over almost the one-frame period. A plurality of sensor pixel circuits of two types for separately detecting an amount of light when the backlight is turned on and an amount of light when the backlight is turned off may be arranged in the pixel region, and a difference circuit may be used for obtaining a difference between the two types of amounts of light.

Abstract: A plurality of first and second sensor pixel circuits each sensing light during a designated sensing period and retaining the amount of sensed light otherwise are arranged in a pixel region. A backlight is turned on once for a predetermined time in one-frame period. A sensing period when the backlight is turned on and a sensing period when the backlight is turned off are set once, respectively, in the one-frame period. The first sensor pixel circuit is reset. The second sensor pixel circuit is reset. Read from sensor pixel circuits of two types is performed in parallel in a line sequential manner during a period other than the periods and. A difference circuit provided outside of the sensor pixel circuits is used for obtaining a difference between an amount of light when the backlight is turned on and an amount of light when the backlight is turned off.

Abstract: In a liquid crystal display device, noise light to a photodetecting element is reduced, whereby an improved S/N ratio is achieved. The liquid crystal display device includes: a first substrate (100) on which a pixel circuit is provided; a second substrate (101) arranged so as to face the first substrate (100) with a liquid crystal layer (30) being interposed therebetween; a photodetecting element (17) provided on the first substrate (100); and a detection light filter (18) that is provided between the photodetecting element (17) and the liquid crystal layer (30) and that cuts off light in a band outside a signal light band that is a band of light to be detected by the photodetecting element (17).

Abstract: A display device with touch sensor functionality with an enlarged distinction margin between the touch state and the non-touch state is provided. The display device with touch sensor functionality includes a light-collecting/blocking film (116) on the surface of the display device. The light-collecting/blocking film (116) includes an opening (212) that collects and passes light exiting the display device to the outside, and a light-blocking portion (213) that blocks a portion of light entering the display device.

Abstract: A liquid crystal display panel according to the present invention includes: a liquid crystal display panel including an electrical element substrate on which switching elements for controlling the light transmittance of a liquid crystal layer are formed so as to respectively correspond to pixels; a microlens array provided on a light-incident side of the liquid crystal display panel; a support provided on the light-incident side of the liquid crystal display panel so as to be in a peripheral region of the microlens array; a rear-face side optical film attached to the liquid crystal display panel via the support; and a wiring connection substrate mounted to the electrical element substrate. The electrical element substrate includes an overhang which projects from the support in the direction of the wiring connection substrate, and the wiring connection substrate is mounted to the overhang.

Abstract: A liquid crystal display device 100 according to the present invention is provided with a liquid crystal panel 20 in which a liquid crystal layer 23 is disposed between an active matrix substrate 21 and an opposite substrate 22 and a backlight 10 that irradiates the liquid crystal panel 20 with light. The liquid crystal panel 20 has a plurality of optical sensor elements 30 that detect the intensity of received infrared light, and the backlight 10 has an infrared LED (light source) 12 that emits infrared light. On a device surface 100a, an infrared light transmissive sheet (infrared light partially transmissive portion) 50 that partially transmits infrared light is provided. The optical sensor elements 30 detect an input position from outside by detecting infrared light reflected from an inputting object such as a finger or the like placed on the device surface 100a.

Abstract: Provided is a lighting device (3) that includes a light guide plate (10) having a light entry surface (10a) through which the light originating from a light-emitting diode unit (9) enters, and a light-emitting surface (10c) from which the light that has entered through the light entry surface (10a) exits. The light-emitting diode unit (9) has light-emitting elements (26a and 27a) arranged linearly on a base member (28) with a prescribed interval therebetween, and sealing resin elements (26b and 27b) that seal respective light-emitting elements (26a and 27a). The light entry surface (10a) of the light guide plate (10) is shaped so as to engage with the sealing resin elements (26b and 27b).

Abstract: There is provided a liquid crystal display panel with microlenses in which deformation, peeling, and the like of an optical film are not likely to occur and which has a good displaying quality. A liquid crystal display panel according to the present invention includes: a microlens array provided on a light-incident side of a liquid crystal display panel; a support provided on the light-incident side of the liquid crystal display panel so as to surround the microlens array; and an optical film attached to the liquid crystal display panel via the support. A gap is formed between the microlens array and the optical film; at least one vent hole connecting a space outside the support and the gap is formed in the support; and, when seen perpendicularly with respect to the plane of the liquid crystal display panel, the vent hole extends in a bending manner or the vent hole extends in an oblique direction with respect to an inner face of the support.

Abstract: In a liquid crystal display apparatus (1) including a touch panel, a liquid crystal panel (display portion) (2) having a plurality of pixels, and a backlight device (backlight portion) (3) that irradiates the liquid crystal panel (2) with illumination light, the touch panel includes optical sensors (25) that are provided in pixel units and that detect infrared light. Furthermore, the backlight device (3) includes white light-emitting diodes (first light-emitting diode portion) (26) which can emit white light, infrared light-emitting diodes (second light-emitting diode portion) (27) which emit infrared light, and a substrate (28) on which the white light-emitting diodes (26) and the infrared light-emitting diodes (27) are integrally provided.