Patent application number | Description | Published |
20080224027 | Display device - A display device according to an embodiment of the invention includes a display panel, a drive circuit that drives the display panel, an illuminating unit that illuminates the display panel, a photosensing section Ls having an ambient light photosensor Ts that senses the brightness of ambient light and a capacitor Cw that is charged with a predetermined reference voltage via a first switch S | 09-18-2008 |
20080297466 | LIQUID CRYSTAL DISPLAY, ELECTRONIC DEVICE, AND METHOD FOR CONTROLLING BRIGHTNESS OF ILLUMINATION UNIT OF LIQUID CRYSTAL DISPLAY - A liquid crystal display according to an embodiment of the present invention includes a liquid crystal display panel, an illumination unit for the liquid crystal display panel, a plurality of photodetectors, and a control unit Cnt to control the brightness of the illumination unit. The photodetectors are TFT ambient light photosensors LS | 12-04-2008 |
20090085854 | DISPLAY UNIT - The invention provides a display unit that has a display area and first and second photodetectors | 04-02-2009 |
20090207352 | LIQUID CRYSTAL DISPLAY APPARATUS - A liquid crystal display includes: a display with an array substrate having scanning and data lines and an IC chip driving liquid crystal, and a color filter substrate; a light-detector having an optical sensor integrated in the display detecting external light; a detection circuit connected via sensor laid-around lines connecting to light-detector lines; an illuminator illuminating the display panel; and a controller controlling the illuminator based on the detection circuit's output. The data lines are distributed to the chip-mounting area and have terminals at an end for connecting to IC chip bump terminals. Leader lines distribute from the terminals toward the chip-mounting area and have inspection terminals at their ends. Sensor inspection lines connect at one end to the sensor laid-around lines and extend at the other end to the chip-mounting area. Sensor detection terminals are formed at the other end of the sensor inspection lines. | 08-20-2009 |
20090237382 | DISPLAY DEVICE - A display device includes: first and second photosensors; a reader; a light detector outputting the light amount detected by the photosensors; a first circuit outputting a first signal based on incident light entering the first photosensor; and a second circuit outputting a second signal based on dimmed incident light entering the second photosensor. The reader includes: a coefficient calculator calculating a first measurement ratio of the first signal to the second signal, and a power correction coefficient; a rate calculator deriving modified power coefficients from the power correction coefficient, calculating a second measurement ratio of the power-corrected first and second signals, and calculating a slope correction coefficient; and an output unit deriving modified proportional coefficients from the slope correction coefficient, and correcting the power-corrected first and second signals using the modified proportional coefficients to yield outputted initial light amount signals. | 09-24-2009 |
20090248344 | OPTICAL DETECTION DEVICE, ELECTRO-OPTICAL DEVICE, ELECTRONIC APPARATUS, AND OPTICAL DEGRADATION CORRECTION METHOD - An optical detection device includes: an optical sensing unit that has an optical detection transistor and outputs a signal corresponding to the amount of light irradiated to the optical detection transistor; a threshold voltage detecting unit that has a threshold value detection transistor that is provided adjacent to the optical detection transistor and is formed in the same process as the formation process of the optical detection transistor, the threshold voltage detecting unit detecting the threshold voltage of the threshold value detection transistor; a sensor output value generating unit that generates a sensor output value that relates to the amount of irradiating light on the basis of the signal outputted from the optical sensing unit; a correction coefficient determining unit that determines a correction coefficient that is used for correcting a change in the sensor output value that is caused by the optical degradation of the optical detection transistor and corresponds to the threshold voltage detected at the threshold voltage detecting unit on the basis of a relationship between the correction coefficient and the threshold voltage, the relationship between the correction coefficient and the threshold voltage being predetermined on the basis of a correlation between a change in a sensor output value relative to the degree of the optical degradation of the optical detection transistor and a change in the threshold voltage relative to the degree of the optical degradation of the optical detection transistor; and a correction processing unit that corrects the sensor output value on the basis of the correction coefficient that has been determined at the correction coefficient determining unit. | 10-01-2009 |
20100052713 | DISPLAY DEVICE AND TEST PROBE FOR TESTING DISPLAY DEVICE - A display device is provided with a light detection unit that detects the intensity of ambient light and is capable of automatically controlling the luminosity of an illumination unit and/or the luminosity of the display device on the basis of the intensity of ambient light detected by the light detection unit. Moreover, the display device makes it possible to easily conduct a test on light-sensor characteristics. | 03-04-2010 |
20100127628 | DISPLAY DEVICE - A display device includes: a display panel; an optical detector which includes an optical sensor formed by a thin film transistor for detecting external light and a capacitor connected between a pair of electrodes of the optical sensor; a switch which turns on or off a charging operation of the capacitor; an optical sensor controller which controls the switch to be turned on or off and measures illumination of the external light on the basis of a time period during which the switch is turned off and a voltage of the capacitor becomes a value not more than a threshold value; and a controller which controls brightness of the display panel on the basis of an output of the optical sensor controller, wherein after the optical sensor controller detects a fact that the voltage of the capacitor becomes the value not more than the threshold value, the optical sensor controller turns on the switch after a predetermined time. | 05-27-2010 |
20110193831 | DISPLAY DEVICE AND ELECTRONIC APPARATUS - A display device includes a switching element that is formed for each pixel; a gate line that is connected to the switching element; a first scanning line driving circuit and a second scanning line driving circuit that are connected to the gate line; and a control unit that normally controls the first scanning line driving circuit to output a signal driving the switching element, and controls an output of the second scanning line driving circuit to be brought into a high-impedance state. | 08-11-2011 |