Abstract: An LCD device using LEDs as light sources provided herein is capable of reducing the manufacturing cost and the power consumption by a reduction in the number of LEDs used. A backlight according to the present invention includes LEDs mounted on a wiring board and a light guide plate having a matrix array of light guide plate blocks assigned the LEDs. The number of LEDs assigned to the block located in a peripheral area is smaller than the number assigned to the block located around the center to reduce the number of LEDs used in the backlight. If a ratio of the brightness in a peripheral area of the screen to the brightness in a central area is 60% or higher, the human eye does not perceive non-uniform luminance. Thus, the manufacturing cost and the power consumption of the LCD device can be reduced.

Abstract: In a liquid crystal display device having a direct-lighting backlight using LEDs as a light source, the number of LEDs is reduced without causing unevenness in brightness. An LED is disposed under a cylindrical lens to be closer to one end of the lens than a middle part of the lens. Light emitted from the LED is outputted, as diffused light, upward from an end diffusion surface of the lens. A portion of the top surface of the lens makes up a total reflection surface to reflect light emitted from the LED and thereby cause the reflected light to head for the other end of the lens. Diffusion surfaces formed on the top surface and the bottom surface of the lens radiate diffused light upward of the lens, causing uniform light to be radiated from the whole top surface of the lens.

Abstract: White noise images and white noise-like pattern images are discerned by making use of the fact that the address current is increased when such an image is entered and detecting the address current by an address current detection circuit. When the detected address current exceeds a given value ? and persists for a given period of time, a CPU controls a contrast control circuit to lower the contrast of the video signal, thus reducing the power consumption of an address driver circuit.

Abstract: A flat-type image display, such as, a plasma display, a LCD display, an OLED display, etc.

Abstract: In order to achieve a liquid crystal display device for TV with a reduced thickness, light weight, and uniform brightness, a liquid crystal display panel and a backlight are housed in a mold. In the backlight, light emitting diodes are provided in a frame-like flexible wiring substrate, in which plural the light emitting diodes are provided on each of four side surfaces of a light guide panel. A distance between the light emitting diodes in the central portion of each side of the light guide panel is small, while a distance in the corners of each side is large.

Abstract: A plasma display device refines contrast, suppresses moiré, and maintains mechanical strength against shocks from the outside of the device. A front panel is disposed at a distance D from the front of the plasma display panel. A contrast refine film in which light absorption parts and light transmission parts extending in the same direction as scanning electrodes, discharge sustaining electrodes, and the like, which are formed on the plasma display panel, are formed with a certain pitch is stuck to the front substrate of the plasma display panel. This helps to refine contrast and suppress moiré below a proper level. An antireflection film, a color tone film, an electromagnetic radiation preventing film, a near-infrared absorption film, and the like are all disposed in the front panel. This helps to prevent deterioration of each optical film during operation.

Abstract: The present invention improves the reliability of a display apparatus by suppressing the temperature rise of the display apparatus mounted on a wall. The display apparatus is provided with a wall mount switch to detect a wall mount member if the wall mount member is attached to the rear of the display apparatus. If it is detected by the wall mount switch that the display apparatus is mounted on a wall, the display power supplied to a display unit is set lower than normal by a power controller. This suppresses the temperature rise of the apparatus mounted on a wall.

Abstract: A plasma display apparatus includes a conductive rear surface cover covering a rear surface of a plasma display panel; an optical filter provided with a conductive layer having a surface resistance of 0.5 ?/square or above, which is disposed at the front surface of the plasma display panel and serves to reduce leakage of electromagnetic waves from the plasma display panel; an optical filter fixing member electrically connected with the rear surface cover, for at least retaining the optical filter; and a conductive body having elasticity, which is interposed between the optical filter and the optical filter fixing member. A plurality of bosses are formed in the optical filter fixing member. A part of the elastic conductive body is compressed by the bosses and connection resistance with the elastic conductive body is reduced.

Abstract: The present invention provides a liquid crystal display module or a liquid crystal display device which can prevent the generation of display irregularities. In the liquid crystal display module which includes a liquid crystal display panel, a frame-like mold frame, alight guide plate, and a reflection sheet, the liquid crystal display panel is arranged on an upper side of the mold frame, the light guide plate and the reflection sheet are arranged on a lower side of the mold frame, the reflection sheet is adhered to the mold frame using an adhesive agent which is formed on at least two sides of the reflection sheet which face each other in an opposed manner, and a portion of one side of the reflection sheet on which the adhesive agent is arranged has a length larger than a length of a portion of another side of the reflection sheet on which the adhesive agent is arranged.

Abstract: A face plate on which a frame is formed for improved design aesthetics is bonded to a top surface of an upper polarizer of a liquid crystal display panel with a pressure-sensitive adhesive material. The frame on the face plate is formed from five layers of printing. The pressure-sensitive adhesive material has a three-layer structure having a first pressure-sensitive adhesive member, a base material, and a second pressure-sensitive adhesive member. The first pressure-sensitive adhesive member is formed thicker than the second pressure-sensitive adhesive member, and hence the pressure-sensitive adhesive material can maintain a necessary thickness above the frame formed on the face plate. The reliability of adhesion between the face plate and the liquid crystal display panel is thus improved.

Abstract: A liquid crystal display device which can prevent the generation of bubbles on an adhesive surface between a liquid crystal display panel and a face plate which protects the liquid crystal display panel is provided. In mounting the face plate on an upper polarizer of the liquid crystal display panel by way of an adhesive material, a picture frame is formed on a periphery of the face plate for enhancing design property. Although the picture frame is formed by printing black ink, a quantity of Si present in the black ink is set to not more than 0.7% and not less than 0.01% thus preventing the generation of bubbles attributed to defective adhesion between the face plate and the adhesive material.

Abstract: The initial color temperature setting can change when a plasma display panel (PDP) is driven for a long period of time. One cause is due to the non-uniform deterioration of red, green, and blue fluorescent materials due to the ultraviolet rays discharged during operation of the panel. Color temperature correction is performed by setting the numbers of discharge pulses for fluorescent materials in accordance with a discharge pulse number correction curve with respect to the cumulative elapsed driven time of the PDP.

Abstract: The initial color temperature setting can change when a plasma display panel (PDP) is driven for a long period of time. One cause is due to the non-uniform deterioration of red, green, and blue fluorescent materials due to the ultraviolet rays discharged during operation of the panel. Color temperature correction is performed by setting the numbers of discharge pulses for fluorescent materials in accordance with a discharge pulse number correction curve with respect to the cumulative elapsed driven time of the PDP.

Abstract: The present invention mechanically protects a surface of a miniaturized liquid crystal display device for mobile phone or the like without deteriorating image quality and without increasing a thickness of a whole display device. To achieve such an object, in the present invention, a liquid crystal display panel is constituted of a TFT substrate and a color filter substrate, a lower polarizer is adhered to a lower surface of the TFT substrate, and an upper polarizer is adhered to an upper surface of the color filter substrate. A face plate is adhered to the upper polarizer using an acrylic adhesive material which is cured by ultraviolet rays. For enhancing strength and adhesion property of the face plate, corners and side portions of the face plate are chamfered. By making a profile of the face plate smaller than a profile of the upper polarizer, the adhesion property of the face plate is enhanced.

Abstract: The present invention provides a touch-panel-equipped display module which arranges a touch panel on a display panel and can maintain a favorable display obviating the adhesion of the touch panel to the display module even when the touch panel is strongly pushed. In the touch-panel-equipped display module which arranges the touch panel on the display panel, the touch panel arranges a plurality of first dot spacers on a surface thereof which faces the display panel in an opposed manner.

Abstract: The present invention provides a liquid crystal display module or a liquid crystal display device which can prevent the generation of display irregularities. In the liquid crystal display module which includes a liquid crystal display panel, a frame-like mold frame, alight guide plate, and a reflection sheet, the liquid crystal display panel is arranged on an upper side of the mold frame, the light guide plate and the reflection sheet are arranged on a lower side of the mold frame, the reflection sheet is adhered to the mold frame using an adhesive agent which is formed on at least two sides of the reflection sheet which face each other in an opposed manner, and a portion of one side of the reflection sheet on which the adhesive agent is arranged has a length larger than a length of a portion of another side of the reflection sheet on which the adhesive agent is arranged.

Abstract: A back substrate has a plurality of electron emission elements. A display substrate comprises an optically transparent substrate disposed opposite to the back substrate; an accelerating electrode formed on the inner face of the optically transparent substrate for accelerating electron beams emitted from the electron emission elements; and luminescent materials excited by the electron beams to emit light toward the outer face of the optically transparent substrate. A frame member supports the back substrate and display substrate on their peripheries. A vacuum chamber is defined by the back substrate, display substrate, and frame member. A conductor electrically connected to the accelerating electrode is drawn out to the outside of the vacuum chamber. A high voltage connector for supplying an accelerating voltage to the conductor is removably connected to the conductor.

Abstract: Disclosed is an optical filter having an electromagnetic shield capable of shielding unnecessary radiation of electromagnetic waves from a PDP, in which satisfactory reduction of undesired radiation is achieved even by employing a relatively low price optical filter. A plasma display apparatus of the invention includes: a conductive rear surface cover covering a rear surface of a plasma display panel; an optical filter provided with an conductive layer having a surface resistance of 0.5 ?/square or above, which is disposed at the front surface of the plasma display panel and serves to reduce leakage of electromagnetic waves from the plasma display panel; optical filter protecting members electrically connected with the rear surface cover, for protecting/retaining the optical filter; and a conductive body having elasticity, which is interposed between the optical filter and the optical filter protecting member. A plurality of bosses are formed in the optical filter protecting members.

Abstract: It is an object of the present invention to provide an image display apparatus which enables cost reduction while being free from electromagnetic interference problems. A power supply circuit comprises, on a single circuit board, an AC inlet to which a power cord is connected from an external AC power supply, a filter circuit to which an inductance element is connected to suppress leakage of electromagnetic waves to the outside of the image display apparatus, and a switch which switches on/off an AC output supplied from the filter circuit. The circuit board of the power supply circuit is entirely covered by electromagnetic shielding means to shield electromagnetic waves. The electromagnetic shielding means is composed of, for example, a first shielding section which surrounds the lateral side of the circuit board and a second shielding section which covers the upper side of the circuit board. The second shielding section is formed of a part of the flat section of a rear cover of the image display apparatus.

Abstract: The present invention solves the problem that the color temperature of initial setting is changed, when a PDP is driven for a long period of time, due to the non-uniform deterioration of red, green and blue fluorescent materials that is caused by the ultraviolet rays generated for discharge. Color temperature correction is performed by setting the numbers of discharge pulses for fluorescent materials in accordance with a discharge pulse number correction curve with respect to the cumulative elapsed driven time of a PDP.