摘要:
A liquid crystal panel (20) provided in a liquid crystal display device of the present invention includes a plurality of optical sensor elements (30) each for detecting an intensity of light received, and has an area sensor function to detect an external input position by causing each of the optical sensor elements (30) to detect an image on the panel surface. The liquid crystal panel (20) includes the optical sensor elements (30) constituting an area sensor and a temperature compensating sensor (50) for carrying out temperature compensation of each of these optical sensor elements (30). The temperature compensating sensor (50) includes a lower-layer light blocking film, optical sensor elements (30A) each for detecting a temperature of an environment where the liquid crystal display device is placed which optical sensor elements (30A) are provided on the lower-layer light blocking film, and an upper-layer light blocking film which is provided so as to cover the optical sensor elements for detecting a temperature which upper-layer light blocking film blocks ultraviolet light, visible light, and infrared light. This makes it possible to attain a liquid crystal display device including an area sensor that does not receive an influence of a temperature of an environment where the liquid crystal display device is used and accordingly has a high detection precision.
摘要:
A liquid crystal display device of the present invention includes a liquid crystal panel (20) having an area sensor function of detecting the position of an input from an outside source by detecting an image on a panel surface. The liquid crystal panel (20) has a plurality of light sensor elements (30) that detect the intensity of received light. The liquid crystal panel (20) is provided with: a light intensity sensor section (50), constituted by those ones of the light sensor elements (30) which are disposed in an outermost peripheral part of a display region (20a) of the liquid crystal panel (20), which detects the intensity of light in an environment where the device is placed; and visible light sensors (31A) and infrared light sensors (31B), constituted by those ones of the light sensor elements (30) other than those constituting the light intensity sensor section (50), which detect the position of an input from an outside source by the light sensor elements detecting an image on the panel surface. This allows some of the light sensor elements to be used as a light intensity sensor to more accurately measure light intensity.
摘要:
A liquid crystal display device of the present invention includes a liquid crystal panel (20) having an area sensor function of detecting the position of an input from an outside source by detecting an image on a panel surface. The liquid crystal panel (20) (position detecting section), provided with visible light sensors (31A) each containing light sensor elements (30) that detect the intensity of received visible light and infrared light sensors (31B) each containing light sensor elements (30) that detect the intensity of received infrared light, which detects an input position by the visible light sensors (31A) and the infrared light sensors (31B) separately detecting an image on the detector surface. The liquid crystal display device further includes a backlight (light-emitting section) for irradiating the liquid crystal panel (20) with light containing infrared light. This achieves an area sensor capable of accurate position detection in a wide range of environmental illuminances and a liquid crystal display device equipped with such an area sensor.
摘要:
A liquid crystal display device of the present invention includes a liquid crystal panel (20) having an area sensor function of detecting the position of an input from an outside source by detecting an image on a panel surface. The liquid crystal panel (20) (position detecting section), provided with visible light sensors (31A) each containing light sensor elements (30) that detect the intensity of received visible light and infrared light sensors (31B) each containing light sensor elements (30) that detect the intensity of received infrared light, which detects an input position by the visible light sensors (31A) and the infrared light sensors (31B) separately detecting an image on the detector surface. The liquid crystal display device further includes a backlight (light-emitting section) for irradiating the liquid crystal panel (20) with light containing infrared light. This achieves an area sensor capable of accurate position detection in a wide range of environmental illuminances and a liquid crystal display device equipped with such an area sensor.
摘要:
A touch panel includes: an infrared light transmitting material through which infrared light is transmitted and which has a surface as a touch surface (20) touched by a detection subject; area sensors (3) including photo sensor elements (4) below a touch region, which is touched by the detection subject, of the infrared light transmitting material; and infrared light sources (1) provided outside the touch region, the infrared light sources (1) emitting infrared light along said surface of the infrared light transmitting material such that an entire circumference of the detection subject touching the touch surface (20) is irradiated with the infrared light, the touch panel detecting a position touched by the detection subject so that the photo sensor element (4) receives, among infrared light emitted by the infrared light sources (1) along said surface, infrared light reflected by the detection subject and transmitted through the infrared light transmitting material.
摘要:
A touch panel includes: an infrared light transmitting material through which infrared light is transmitted and which has a surface as a touch surface (20) touched by a detection subject; area sensors (3) including photo sensor elements (4) below a touch region, which is touched by the detection subject, of the infrared light transmitting material; and infrared light sources (1) provided outside the touch region, the infrared light sources (1) emitting infrared light along said surface of the infrared light transmitting material such that an entire circumference of the detection subject touching the touch surface (20) is irradiated with the infrared light, the touch panel detecting a position touched by the detection subject so that the photo sensor element (4) receives, among infrared light emitted by the infrared light sources (1) along said surface, infrared light reflected by the detection subject and transmitted through the infrared light transmitting material.
摘要:
A coordinate sensor (10) includes at least two line sensors (1) that are disposed in x-axis and y-axis directions, and right-angle prisms (2) each of which changes a light path of light that has passed through an image display region of a liquid crystal panel (20). Each of the line sensors (1) is disposed outside the image display region and has a light-receiving surface (1a) parallel to an image display surface of the liquid crystal panel (20). The right angle prisms (2) cause light which travels in the x-axis and y-axis directions and which has passed through the image display region to be guided to the light-receiving surfaces (1a) of the line sensors (1). The coordinate sensor (10) receives the light which has thus passed through the image display region of the liquid crystal panel (20) so as to detect a coordinate, on the image display region, that is indicated by an object to be detected such as a finger. Consequently, a thin coordinate sensor that enables easy alignment with no reduction in aperture ratio and no restriction on operation speed can be realized at low cost.
摘要:
A liquid crystal display device (100) of the present invention includes: a liquid crystal panel (20) including: an active matrix substrate (21); a counter substrate (22); and a liquid crystal layer (23) provided between the active matrix substrate (21) and the counter substrate (22); and a backlight (10) illuminating the liquid crystal panel. The liquid crystal display device (100) has an area sensor function for detecting an external input position, and further includes a reflectance changing section (50) that reduces a reflectance of light from the backlight (10) in response to application of pressure on a panel surface (100a). The reflectance changing section (50) is configured so that in a state where no pressure is applied on the panel surface (100a), an air layer (50c) is formed between two elastic films (50a and 50b) whereas in a state where pressure is applied on the panel surface (100a), the two elastic films (50a and 50b) contact each other.
摘要:
The liquid crystal display device (1) includes (i) a plurality of pixels arranged in a matrix manner for carrying out display, (ii) pixel electrodes (20) each of which has a comb-teeth shaped region, (iii) common electrodes (24) which face the respective pixel electrodes (20) via an insulating layer and each of which has a plate-like shape, (iv) a plurality of CSY lines (14), and (v) a plurality of CSX lines (16) which perpendicularly intersect with the plurality of CSY lines (14). Each of the common electrodes (24) is connected with any of the plurality of CSY lines (14) or with any of the plurality of CSX lines (16).
摘要:
In order to simultaneously carry out, at a smaller sensor density, (i) detection of color information (recognition of a color) of visible light which enters a detection target surface and (ii) detection of an input position of the visible light, a liquid-crystal panel (20) included in a liquid-crystal display device of the present invention has an area sensor function of detecting color information and an input position of visible light by sensing an input image of the visible light on a panel surface. The liquid-crystal panel (20) (position detecting section) includes (i) a yellow sensor (31Y) including a light sensor element (30) which senses an intensity of green light and red light from among three primary color lights and (ii) a cyan sensor (31C) including a light sensor element (30) which senses an intensity of blue light and green light from among the three primary color lights. Sensing of the input image of the visible light on the panel surface by each of the yellow sensor (31Y) and the cyan sensor (31C) allows detection of the color information and the input position.