Patent application number | Description | Published |
20120068054 | PHOTODETECTING DEVICE AND DISPLAY APPARATUS - Provided is a photodetecting device having a wider dynamic range with a simple configuration. A photodetecting device includes a photodiode (D | 03-22-2012 |
20120176355 | Display Device - A plurality of first sensor pixel circuits each sensing light during a sensing period when a backlight is turned on and retaining the amount of sensed light otherwise in accordance with a clock signal and a plurality of second sensor pixel circuits each sensing light during a sensing period when the backlight is turned off and retaining the amount of sensed light otherwise in accordance with a clock signal are arranged in a pixel region. The sensor pixel circuits of two types are connected to different output lines, so that a difference between two output signals is obtained at the outside of the sensor pixel circuit. The sensor pixel circuits described above are used for detecting a difference between an amount of light to be incident when the backlight is turned on and an amount of light to be incident when the backlight is turned off. | 07-12-2012 |
20120176356 | DISPLAY DEVICE - 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. | 07-12-2012 |
20120176357 | DISPLAY DEVICE - 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. | 07-12-2012 |
20120262424 | Display Device - A plurality of sensor pixel circuits each including two photodiodes, one accumulation node accumulating charge corresponding to an amount of light, and a read transistor having a control terminal connected to the accumulation node are arranged in a pixel region. In accordance with a clock signal, when a backlight is turned on, a transistor turns on, a current flows through the photodiode, and a potential at the accumulation node drops. When the backlight is turned off, a transistor turns on, a current flows through the photodiode, and the potential at the accumulation node rises. Sensitivity characteristics of the two photodiodes may be changed using the clock signal. The sensor pixel circuit described above is used for detecting a difference between an amount of light to be incident when the backlight is turned on and an amount of light to be incident when the backlight is turned off. | 10-18-2012 |
20120268439 | Display Device - A plurality of sensor pixel circuits are disclosed, each including one photodiode, one accumulation node accumulating charge corresponding to an amount of light, a read transistor having a control terminal connected to the accumulation node, and transistors turning on or off in accordance with a clock signal, and switching a path for a current flowing through the photodiode are arranged in a pixel region. In accordance with the clock signal, when a backlight is turned on, a current flows out of the accumulation node, and a potential at the accumulation node drops. When the backlight is turned off, a current flows into the accumulation node, and the potential at the accumulation node rises. | 10-25-2012 |
20130063407 | DISPLAY DEVICE - 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. | 03-14-2013 |
20130113768 | DISPLAY DEVICE AND DRIVE METHOD FOR SAME - Disclosed is a display device having an optical sensor with increased sensitivity. The display device is provided with: a display panel that includes a plurality of display pixel circuits ( | 05-09-2013 |
20150049260 | COLOR FILTER-INTEGRATED TOUCH PANEL - A large-screen capacitive touch panel integrated with a color filter that can be applied to a large-screen display device is provided. The color filter-integrated touch panel includes mesh detection electrodes constituted of a large number of meshes, mesh driving electrodes constituted of a large number of meshes, and floating electrodes. The floating electrodes are disposed between a display device, which will be used after being combined with the color filter-integrated touch panel, and the detection electrodes and driving electrodes. The floating electrodes suppress the display device from adversely affecting the touch panel by being between the display device and the detection electrodes and driving electrodes. | 02-19-2015 |
20150054803 | TOUCH PANEL WITH INTEGRATED COLOR FILTER - Provided is a large surface area capacitive touch panel integrated with a color filter that can be applied to a large-screen display device. The color filter-integrated touch panel is constituted of mesh-shaped detection electrodes formed of a large number of meshes and mesh-shaped driving electrodes also formed of a large number of meshes in a first mesh layer. The driving electrodes include first driving electrodes formed in the first mesh layer and second driving electrodes formed in a second mesh layer, and the first driving electrodes and the second driving electrodes are electrically connected to each other. The second mesh layer, which is where the second driving electrodes are formed, is disposed between a display device that will be used after being combined and the first mesh layer in order to suppress the touch panel from being adversely affected by the display device. | 02-26-2015 |
20150062457 | TOUCH PANEL SUBSTRATE, DISPLAY PANEL, AND DISPLAY APPARATUS - Provided is an in-cell touch panel having improved display quality. An opposite substrate relating to one embodiment of the present invention is provided with a black matrix, first electrodes, which are disposed in the Y direction, and second electrodes, which are disposed in the X direction. The first electrodes and the second electrodes are formed such that the boundaries therebetween are positioned in regions that coincide with the black matrix in a planar view. | 03-05-2015 |