95results about How to "Avoid display quality" patented technology

In a display device 100, a reflective polarizer 110, a polarizer 120, a retarder 130, a liquid crystal panel 140, a polarizer 150, and a backlight 160 are disposed sequentially from the viewing side. When the liquid crystal panel 140 is set in a light blocking state or the backlight 160 is set in an unlit state, the reflection of an outside light “O” turns the display screen into a mirror state. When the backlight 160 is set in a lit state to drive the liquid crystal panel 140, a transmitted light “T” allows a particular display screen to be visually recognized.

Systems, methods, and devices are provided in which photodetectors disposed throughout a display are used to control the display brightness. The photodetectors are to be used for ambient light sensing, proximity sensing, or to compensate for aging OLEDs. In some embodiments, photodiodes are fabricated with OLEDs during the TFT fabrication process. In some embodiments, the photodetectors may be disposed throughout the display in zones containing OLEDs. The photodetectors are used to control the display brightness and color for the OLEDs in areas around each photodetector based on ambient light, aging, and/or nearby objects. A controller makes driving strength adjustments to the OLEDs in each zone independent of other zones. Photodetectors disposed throughout the display may improve proximity sensing and provide additional functionality to the device.

Cylindrically curved slopes successively inner-reflect illumination light which reaches a back face or emission face of a light guide plate via an upper edge of an incidence face. The curved slopes give the light diverse propagation directions after inner-reflection. This avoids the viewer from observing a strongly irradiated edge, thereby reducing reflective appearance. Inner-reflection by the curved slopes also gives diverse propagation directions to illumination light coming via other edges, thereby reducing reflective appearance. Curved surface profile is given to valleys involved in a great number of projection rows running in a direction approximately perpendicular to the incidence face, and may be further given to the projection rows. The valleys are provided with curved surface profile within a curved-surface-profile-giving-area around the incidence face or, in addition to this, around flank faces of the light guide plate. The curved surface profile varies gradually around a boundary of the curved-surface-profile-giving-area to avoid sudden profile changing which would bring undesirable effects.

A liquid crystal display device has a plurality of pixel elements, the optical transmissivity of which is varied by suitable electrical signals. The liquid crystal display device has electrodes which apply electric fields to a liquid crystal layer, the electric fields having components in a direction generally parallel to the liquid crystal layer. Each pixel element has at least one pixel electrode which extends in a common direction as a signal electrode and common electrodes which extend over several pixel elements. The common electrodes may be on the same side of the liquid crystal layer as the pixel and signal electrodes, or they may be on opposite sides. Each pixel may have two pixel electrodes with the signal electrode disposed therebetween, and there are then a pair of common electrodes with the pixel electrodes therebetween. The common electrodes may be common to adjacent pixel elements. The pixel electrodes and the common electrodes may be separated by an insulating film.

A liquid crystal display includes: a first substrate; a second substrate disposed opposite to the first substrate; a light blocking member disposed on one of the first substrate or the second substrate, where the light blocking member is disposed in a display area including a plurality of pixel areas, and the light blocking member includes a plurality of extensions having a predetermined plane shape; and a plurality of first spacers disposed on one of the first substrate and the second substrate and contacting an upper surface of a plurality of thin films disposed on the other of the first substrate and the second substrate, in which the extensions of the light blocking member includes a first extension and a second extension, and the first extension overlaps the first spacers, and the second extension does not overlap the first spacers.

A touch panel having high reading accuracy of an object to be detected is provided. In a method for driving a touch panel which is provided with a photo sensor in a pixel, an image is displayed in a display portion of a touch panel, a detection region is determined by detecting approach or contact of an object to be detected in a state in which the image is displayed, and the object to be detected is read while substantially equalizing the intensity of light of pixels in the detection region per unit time and unit area. The intensity of light of the pixels per unit time and unit area, which is to be substantially equal, is preferably the maximum intensity of light in the detection region before adjustment, more preferably, the intensity of light for white display.

An organic light emitting diode display is disclosed in which a flow control pattern of an organic protective layer is disposed to implement a thin bezel. In an active area and a bezel area defined on a substrate, the flow control pattern disposed reduces the flow of a protective layer so as to minimize area size of the bezel area.

A display apparatus includes a matrix display unit including light-emitting devices of a plurality of colors; a plurality of column control circuits that generate and output current-data signals from input image signals; and data lines that transfer the current-data signal output from the column control circuits to circuits that drive the light-emitting devices in columns. The plurality of column control circuits include a set of column control circuits that output the current-data signals to a set of data lines, the number of which is equal to the number of colors of the light-emitting devices, with the number of column control circuits in the set of column control circuits being larger than the number of colors. The set of column control circuits includes two or more column control circuit units commonly connected to a data line to output the sum of the current-data signals to the connected data line.

In a transistor including an oxide semiconductor, a change in electrical characteristics is suppressed and reliability is improved. The transistor includes an oxide semiconductor film over a first insulating film; a second insulating film over the oxide semiconductor film; a metal oxide film over the second insulating film; a gate electrode over the metal oxide film; and a third insulating film over the oxide semiconductor film and the gate electrode. The oxide semiconductor film includes a channel region overlapping with the gate electrode, a source region in contact with the third insulating film, and a drain region in contact with the third insulating film. The source region and the drain region contain one or more of hydrogen, boron, carbon, nitrogen, fluorine, phosphorus, sulfur, chlorine, titanium, and a rare gas.

In an electro-optic device 1, connection to first electrodes 40 of a first transparent substrate 10 extending in one direction from the side, to which signals are inputted, is established through electrical conduction between two substrates in a width-wise central area of the first transparent substrate using first terminals 81. To second electrodes 50 of a second transparent substrate 20 which are routed toward the outer side, signals are directly inputted from second terminals 82. The obliquely routed second electrodes 50 are formed of, e.g., an aluminum alloy film, and slit-like openings are formed in the second electrodes 50 to allow passage of light emitted from a backlight device 9.

A display apparatus according to the present invention is provided with a matrix-type liquid crystal panel and a switching liquid crystal panel, the matrix-type liquid crystal panel and the switching liquid crystal panel assembled together. In the display apparatus, a polarity of a voltage applied on an electrode pair of the switching liquid crystal panel is inverted once in substantially one vertical period or in one or more vertical period. With this arrangement, it is possible to reduce a number of bright line or dark line. This attains display quality improvement and power consumption reduction.

An electroluminescent device includes a lower structure including an emission area and a peripheral area, a flexible encapsulating multilayer, and a touch panel including a touch electrode. The emission area includes an electroluminescent unit including a lower electrode disposed directly on an insulating film, an intermediate film, and an upper electrode disposed on the intermediate film. The peripheral area includes an inorganic surface portion substantially surrounding the emission area, various terminals, and wires. A lower surface of the flexible encapsulating multilayer and an upper surface of the inorganic surface portion each include only one or more inorganic materials in direct contact with each other.

In one embodiment of the present invention, when a still image is displayed, applied voltages respectively corresponding to a total of n (n being an integer of not less than 4) types of gradation 0 to (n−1) are outputted to pixels. When a moving image is displayed, an applied voltage corresponding to a predetermined gradation m (1≦m≦(n−2)) is applied to the pixels instead of applied voltages respectively corresponding to gradations of less than the predetermined gradation m. Overdrive driving is performed with respect to a total of n types of gradation.

A horizontal scanning period correction value setting circuit compares a video signal representing a display image of pixel formation portions of polarity-inverted lines and a video signal representing a display image of pixel formation portions of the next row, and generates a signal width correction value for correcting the length of the horizontal scanning period. For this, the signal width correction value is set such that the charge ratios of the pixel formation portions are constant, regardless of a difference between a target voltage of the driving video signals when the polarity is inverted and a target voltage of the driving video signals when the polarity is sustained. Then, a source output control signal and a gate output control signal are generated based on the signal width correction value, and the scanning signals and the driving video signals are generated based on the source output control signal and the gate output control signal.

Disclosed is a display device that (i) converts an input image formed of R, G, and B into a converted image formed of R, G, B, and W to display the converted image and that (ii) compresses the luminance of an input image for the subsequent frame on the basis of an adjustment value C which is corrected in correspondence with the number of, among all pixels in a converted image for the current frame, pixels in a state of luminance saturation and that then converts the input image into a converted image, the display device including a luminance oscillation detecting section (10) for detecting, while input images identical to each other are being inputted each as the above input image, whether converted images corresponding to the respective input images have an oscillating luminance, the display device, in the case where the luminance oscillation detecting section (10) has detected that the converted images have an oscillating luminance, stopping correction of the adjustment value C to fix the adjustment value C to a certain value, thereby preventing the converted images from having an oscillating luminance as a result of oscillation of the adjustment value C.

A color filter array or a backplane for a color display has first and second areas with substantially different optical properties. The invention also provides a color filter with a low resistivity. The invention further provides a color display utilizing fluorescent or phosphorescent material.

A display device with favorable display quality is provided. A display portion where a plurality of pixels is arranged in a matrix is divided into Region A and Region B, i.e., regions on the upstream side and the downstream side of a scanning direction. A signal line for supplying an image signal is provided in each of Region A and Region B. Region A and Region B adjoin each other such that a boundary line showing the boundary between the regions is bent. Bending the boundary line suppresses formation of a stripe in a boundary portion. For example, in a given column, the total number of pixels electrically connected to a signal line in Region A is made different from the total number of pixels electrically connected to a signal line in Region B.

A pixel electrode structure of a display device is discussed. According to an embodiment, the pixel electrode structure includes a plurality of sub pixel electrodes disposed substantially in parallel in the pixel region, wherein the sub pixel electrodes have progressively greater widths and progressively greater spaces therebetween starting from one side of the pixel region to the other opposite side of the pixel region.

A backlight module is provided, which comprises a light guide plate assembly comprising an upper light guide plate and a lower guide plate that are stacked together, at least one light source and a reflection film. The light source is disposed on at least one side of the light guide plate assembly with a light incident surfaces of the light guide plate assembly facing the light source. The reflection film is disposed below the light guide plate assembly.

A purpose is to enable detection of an object in a display device including a display panel provided with photosensors when the object touches the display panel and when the object does not touch the display panel. A display device includes a display panel provided with photosensors. The display device has a function of detecting an object with the photosensor when the object touches the display panel and when the object does not touch thereto. The display device has a function of changing the sensitivity of the photosensor varies depending on whether the object touches the display panel.

A clock signal in synchronization with a data writing signal, every scanning line, which is supplied from a light-emitting control circuit 4 to a scanning driver 6, is supplied to an oscillator 12 which generates a reference switching signal, according to a PWM method, in a DC-DC converter 8. Thereby, the timing at data writing every scanning line is in synchronization with the phase of a ripple component superimposed on a driving voltage Va from the DC-DC converter 8. Accordingly, a problem that there is caused a state in which light-emitting intensity is different every scanning line can be solved because the same voltage Vgs between a gate and a source is supplied every scanning line to a light-emitting driving transistor Tr2 at any time even if the ripple component by switching of the DC-DC converter is superimposed on the driving voltage Va. Thereby, a problem that the display quality of images is remarkably reduced can be prevented in a light-emitting driving operation of a display panel, wherein the operation has a configuration in which an organic EL element with a light-emitting intensity characteristic of a current dependence type, for example, is used as a pixel.

A backlight assembly and display device having the same. The backlight assembly may include a light source, a light guide formed at one side of the light source, at least one optical sheet disposed on the light guide and have first to fourth sides and first to fourth corners and a mold frame which accommodates and fixes the optical sheet, wherein the optical sheet includes a first tab which protrudes in a same plane as the optical sheet and in a direction perpendicular to the second side while being adjacent to the second corner, and a second tab which protrudes in the same plane as the optical sheet and in a direction perpendicular to the third side and is disposed to be between and spaced apart from the third corner and the fourth corner.

The electroluminescent display device according to the present disclosure comprises a plurality of pixels. Each of the plurality of pixels comprises a driving element for generating a driving current, a light emitting element for emitting light according to the driving current, an emission controlling element for controlling a flow of the driving current between the driving element and the light emitting element, and a switching circuit for setting a first gate-source voltage of the driving element corresponding to the driving current based on a first data voltage during a first period and setting a second gate-source voltage of the driving element based on a second data voltage different from the first data voltage during a second period following the first period, wherein the second gate-source voltage is different from the first gate-source voltage, and wherein during the second period the emission controlling element is turned off.

The general inventive concept relates to an organic light emitting display that has the same area where the upper and lower electrodes of a capacitor are overlapped for adjacent pixels, for respective pixels that constitute the organic light emitting display but implements the sizes of the upper and lower electrodes to be different. This thereby prevents the display quality of horizontal line shaped spot generated due to the effects of a critical dimension (CD) distribution from being degraded.

A display device includes: a timing controller (10) for driving a scanning line driving circuit (4) and a signal line driving circuit (6) by providing a scanning period (T1) and a pause period (T2) which follows the scanning period (T1); a data analyzing section (101) for obtaining detection data on an external light intensity; and a BL luminance setting section (104) for outputting, at least during the pause period (T2), a BL control signal for adjusting, in accordance with the detection data obtained by the data analyzing section (101), a luminance of light to be emitted to a screen.

To provide a display which can improve viewing angle dependency of a contrast ratio at least in a specific azimuth without design change of a basic structure of a display element, limitation to white display state or black display state, and deterioration in display quality in other directions. The above-mentioned display is a display comprising: a display element with a contrast ratio dependent on a viewing angle; and an anisotropic scattering film having an anisotropic scattering layer, wherein the anisotropic scattering film is located on a viewing screen side of the display element and has a scattering central axis in substantially the same azimuth as an azimuth in which a contrast ratio of the display element in a direction inclined by a certain angle from a normal direction of a viewing screen of the display element has an extreme value.

A novel liquid crystal display device is disclosed. The liquid crystal display device comprises a first polarizing film, a first retardation area with an Re of 70 to 330 nm and a value of Nz of not less than 0 to less than 0.5 and a slow axis perpendicular to a transmission axis of the first polarizing film; a second retardation region with an Re of not greater than 50 nm and an Rth of 10 to 140 nm; and a liquid crystal cell comprising a liquid crystal layer with a slow axis in a black state parallel to the transmission axis of the first polarizing film; and a second polarizing film in this order.