Abstract: Optical devices for guiding illumination are provided each having a body of optical material with staircase or acutely angled ramp structures on its top surface for distributing light inputted from one end of the device from the front exit faces of such structures along certain angular orientations, while at least a substantial portion of the light is totally internally reflected within the body until distributed from such front exit faces. Optical devices are also provided each have a body of optical material having a bottom surface with acutely angled ramp structures and falling structures which alternate with each other, such that light is totally internally reflected within the device until reflected by such ramp structures along the bottom surface to exit the top surface of the device or transmitted through the ramp structures to an adjacent falling structure back into the device.

Abstract: The present invention relates to a liquid crystal display panel and a method for fabricating the same, wherein the liquid crystal display panel of the present invention comprises a first substrate, a second substrate, and a sealant having a plurality of modifying patterns. In addition, the method of the present invention comprises steps of providing a liquid crystal display panel having a first substrate, a second substrate and a sealant having a plurality of modifying patterns, and then cutting off a part of the modifying patterns. Thereby, the present invention can eliminate the gravity flow and reduce the gravity mura, so that a liquid crystal display panel having few mura defects is provided.

Abstract: There are provided a liquid crystal display having an Optically Compensated Bend (OCB) mode liquid crystal layer and a method of manufacturing the same. The liquid crystal display includes a lower substrate having pixel electrodes. An upper substrate is disposed above the lower substrate. The upper substrate has an opposite surface opposing the lower substrate and a counter electrode disposed on the opposite surface. Polymer spacers having soft polymers are disposed between the lower substrate and the upper substrate. An OCB mode liquid crystal layer is also disposed between the lower substrate and the upper substrate.

Abstract: An electrooptic device simultaneously displays a first image and a second image in different directions. The electrooptic device includes a first polarizer and pixel rows in which first and second pixels are alternately arranged to emit light through the first polarizer. The electrooptic device includes a liquid crystal device that switches between a first alignment state in which a phase difference is not provided to linearly polarized light having a polarization axis parallel or perpendicular to a transmission axis of the first polarizer and a second alignment state with a phase difference of ?/2. The electrooptic device also includes a second polarizer disposed on a display side of the liquid crystal device and having a transmission axis parallel or perpendicular to the transmission axis of the first polarizer. The first and second pixels display different images depending on the alignment state of the liquid crystal device.

Abstract: There is described a process for the production of LCDs, in particular PDLCDs, preferably in a roll-to-roll process, wherein in a first process step a first contact layer (12) and a first electrode layer (14) spaced therefrom is applied to a base carrier (10). A first and a second delimitation layer (18, 20) is then applied to the base carrier (10). Thereafter a functional layer (26) comprising a PDLCD mixture provided in a porous support matrix is applied between the first and second delimitation layers (18 and 20). A protective layer (28) is then applied to the functional layer (26) between the first and second delimitation layers (18 and 20) and finally there is applied to the protective layer (28) a second electrode layer (30) which is contacted with the first contact layer (12).

Abstract: An optical element comprises a stack of at least three juxtaposed films with at least one inner optical film and two outer transparent films exhibiting high dimensional stability, wherein a controlled tensile force is applied in at least one direction to the two outer films but not the at least one inner film.

Abstract: A pixel structure for an liquid crystal display (LCD) with an embedded touch screen is provided.

Abstract: Disclosed is a liquid crystal display module which makes it possible to reduce the number of components and manufacturing processes of the liquid crystal display module and to easily replace a failed LED of a backlight unit that irradiates light onto a liquid crystal panel when the LED fails. In the liquid crystal display module, an electric signal is transferred to the liquid crystal panel and the LED through a flexible printed circuit board, and the flexible printed circuit board is electrically and physically connected to the LED by connecting a coupling pin of the LED with a socket of the flexible printed circuit board. In the case in which an LED fails, the coupling pin of the failed LED can be detached from the socket of the flexible printed circuit board, and thus the LED can easily be replaced.

Abstract: A backlight module of a liquid crystal display is provided. The backlight module includes a back cover, an optical plate, at least one light source, a mold frame and at least one optical film. The optical plate is disposed on the back cover and the light source is disposed adjacent to the optical plate. The mold frame surrounding the back cover has a protruding structure. The protruding structure is located between a light outlet surface of the optical plate and a front frame of the mold frame to form a recess, so that the optical film can be disposed in the recess. The present invention also discloses a liquid crystal module including a backlight module and a liquid crystal panel. The liquid crystal panel is disposed on a mold frame of the backlight module.

Abstract: A printed circuit board includes; first and second pads spaced apart from each other; and a dielectric region which surrounds the first and second pads, wherein each of the first and second pads includes a main region and an expansion region which extends from the main region, and wherein the main regions of the first and second pads are configured to have a first surface mount device mounted thereon, wherein the expansion regions and portions of the main regions which directly adjoin the expansion regions of the first and second pads are configured to have a second surface mount device mounted thereon, and wherein the first and second surface mount devices have different sizes.

Abstract: An electro-optical device includes, on a substrate, a plurality of scanning lines and a plurality of data lines which intersect one another, a plurality of pixel electrodes provided corresponding to the intersections of the plurality of scanning lines and the plurality of data lines, a storage capacitor in which a pair of electrodes, and a dielectric film are laminated, a sidewall made of a first insulating film provided on an inner wall of an opening which is opened through one of the pair of electrodes and the dielectric film, and a first conductive film which is arranged opposite to one of the pair of electrodes as viewed from the other of the pair of electrodes, and electrically connected to the other of the pair of electrodes via a self-alignment contact hole which is formed in a self-alignment manner simultaneously with the sidewall and surrounded by the sidewall.

Abstract: A backlight module of a flat panel display for lighting the flat panel display is described. The backlight module includes a rear bezel, a plurality of lamps, an optical film and a middle bezel. The rear bezel is composed of a bezel main body and sidewalls. The bezel main body includes a plurality of ribs to enhance the strength thereof and a plurality of studs to fix with a wall mounting bracket or a foot stand. The middle bezel fixes the optical film on the rear bezel. The backlight module may further include a plurality of supports integrated the rear bezel. A reflective film may also be integrated on the rear bezel to further reduce the quantity of separable components of the flat panel display.

Abstract: A resist region covering the gate terminal and lead and between a passivation layer and a gate insulating layer is used to protect the gate terminal and lead. The resist region is located at a scribing line on margin of the color filter substrate of a panel, thereby the resist region can protect the passivation layer and the gate insulating layer from cracking, and the gate terminal and the lead from corrosion after a portion of the color filter substrate is removed along the scribing line.

Abstract: A transflective liquid crystal display module is provided. The transflective LCD includes a backlight unit for providing a light, an active matrix substrate, an opposite substrate with an internal reflector disposed between the active matrix substrate and the backlight unit, an optical film disposed on the opposite substrate, and a liquid crystal layer filled between the active matrix substrate and the optical film. In the transflective LCD of the present invention, the light provided by the backlight unit is reflected back by the internal reflector such that the light provided by the backlight unit can be recycled. Furthermore, a flat panel display device and an electronic apparatus are also provided.

Abstract: There is provided a liquid-crystal-layer 15 in which an electrical field is applied in a direction parallel to a first substrate. Respective absorption axes of the first substrate provided with a first polarizing-plate 12 on a light-input side and a second substrate provided with a second polarizing-plate 11 on a light-output side are perpendicular. An optical axis of the liquid-crystal-molecule is parallel to the output polarizing-plate 11 and the absorption axis of the input polarizing-plate 12. A matrix-drive-electrode group is positioned on a side of the liquid-crystal-layer 15 of the first or second substrate. The input and output polarizing-plate are composed of a polarizing layer and a supporting-substrate material. The supporting-substrate material is present on the liquid-crystal-layer side of the polarizing layer. The supporting-substrate material of one of the input or output polarizing-plate is birefringent, and the Nz coefficient being 4 or more.

Abstract: A display device includes a first substrate, a second substrate, and microcapsules sandwiched between the first substrate and the second substrate, the microcapsules constituting a display area, the microcapsules encapsulating a display material whose optical properties change in response to electrical stimulation. A conductive material for conducting between the substrates is provided between the first substrate and the second substrate to constitute a vertically conducting portion. The thickness of the conductive material is set such that the distance between the first substrate and the second substrate at the vertically conducting portion is larger than the distance between the first substrate and the second substrate in the display area.

Abstract: To provide a liquid crystal aligning agent useful to obtain a liquid crystal alignment film which exhibits a high voltage retention characteristic even under high temperature conditions and which has a low accumulation charge, and a liquid crystal display device which is less susceptible to lowering of contrast or to image persistence.

Abstract: A display device including a display panel displaying images, a protective member disposed on a front surface of the display panel and protecting the display panel and a support frame supporting both the display panel and the protective member The support frame includes a guide part protruded in a direction perpendicular to a plate surface of the protective member and fixing the protective member such that the protective member is prevented from moving in a direction parallel to the plate surface. The support frame is adhered to edges of the protective member.

Abstract: An exemplary flat display device includes a frame with a front panel and a plurality of buttons, a protective cover slidably mounted on the front panel to expose or shield the buttons, and a positioning member. A center window is formed in the front panel for exposing a display panel embedded in the frame. A pair of grooves is defined in the front panel adjacent opposite sides of the window respectively. A locating hole is defined in the front panel beside one of the grooves. A pair of rails is formed on a rear surface of the protective cover to be slidably received in the grooves of the frame and a notch is defined in the rear surface of protective cover as well. The positioning member is resiliently received in the locating hole and releasably snapped into the notch.

Abstract: A direct type backlight module comprises a back bezel, a light source, a circuit board, and a heat-insulating element. The light source comprising a plurality of driving elements coupled thereto is disposed within the back bezel. The circuit board is disposed outside the back bezel. The heat-insulating element is disposed between the back bezel and the circuit board so as to form a first convectional space and a second convectional space.

Abstract: An electronic apparatus is provided, which includes: a middle frame having a frame section formed in the shape of a frame with four side sections; a front panel joined with the middle frame to seal one opening of the middle frame; a rear panel joined with the middle frame to seal another opening of the middle frame; a liquid crystal panel placed within an outer casing configured by the middle frame, the front panel and the rear panel; a back light panel placed within the outer casing, irradiating light towards the liquid crystal panel; and a holding plate placed within the outer casing on a side opposite the liquid crystal panel with the back light panel in-between, pressing the back light panel.

Abstract: An electromagnetic shielding system including a circuit board, a display and a shield is described. The shield includes a face having an opening through which the display is visible. A wall portion extends from the face of the shield towards the circuit board. As a result, the display is substantially encapsulated between the circuit board, the shield and the wall portion.

Abstract: A flexible printed circuit board for use in a liquid crystal display device includes: a body section having a light source portion embedded therein; a leg section including a solder pad connected to an external printed circuit board, the leg section being extended from the body section and integrally formed with the body section; and a single conductive layer formed across the body section and the leg section for electrically interconnecting the light source portion and the solder pad.

Abstract: A flat fluorescent lamp includes a first substrate, a second substrate, an external electrode, and a radiating member. The second substrate is combined with the first substrate to form a plurality of discharge spaces. The external electrode is formed on at least one surface of the first substrate and the second substrate, wherein the external electrode extends perpendicularly to the discharge spaces. The radiating member is formed on the external electrode and radiates heat generated from the external electrode. Therefore, the heat generated from the flat fluorescent lamp is radiated to outside the flat fluorescent lamp through the radiating member, reducing pinhole formation and generally improving luminance characteristics of the flat fluorescent lamp.

Abstract: A liquid crystal device in which a reflective display region for performing reflective display and a transmissive display region for performing transmissive display are provided in one dot region, includes a first substrate and a second substrate disposed so as to be opposite to each other with a liquid crystal layer interposed therebetween; a first electrode and a second electrode provided on a surface of the first substrate which faces the liquid crystal layer, each of the first and second electrodes applying an in-plane electric field to the liquid crystal layer in the one dot region, and a reflective portion dielectric film provided on the first electrode and/or the second electrode in the reflective display region, the reflective portion dielectric film making a capacitance between the first and second electrodes in the reflective display region smaller than a capacitance between the first and second electrodes in the transmissive display region.

Abstract: A backlight module including a light source, a light guide plate and a prism sheet is provided. The light source is arranged along a first direction. The light guide plate having a light incident surface, a light refraction surface and a light emission surface is disposed on one side of the light source. The light refraction surface has a plurality of grooves parallel to one another in a second direction. The prism sheet is disposed on the light emission surface of the light guide plate, and has a plurality of prism portions parallel to one another in a third direction and on a surface of the prism sheet facing the light emission surface. The second direction is substantially perpendicular to the third direction, and an acute angle formed between the first direction and the third direction is less than or equal to 7 degrees.

Abstract: A liquid crystal display device includes a light source and a liquid crystal display panel. The light source includes a blue-emitting phosphor configured to emit blue light, a green-emitting phosphor configured to emit green light, and a red-emitting phosphor configured to emit red light. The liquid crystal display panel includes color filters configured to control the transmittance of light from the light source and transmit one of blue, green, and red light on a pixel basis. The green-emitting phosphor is represented by a compositional formula of (La1?x?y,Tbx,Cey)PO4, wherein “x” and “y” are compositional ratios satisfying both the following conditions: 0.500<(x+y)<0.700 and 1.20<(y/x)<2.00. The compositional ratios “x” and “y” preferably satisfy the following conditions: 0.50<(x+y)<0.65 and 1.50<(y/x)<1.70.

Abstract: A display apparatus includes a thin-plate display device and a rear cover. The display device has a thickness, a display surface at one side in a thickness direction for displaying an image, and a back surface at the other side in the thickness direction. The rear cover covers the back surface of the display device, has a back wall mounted to the back surface, and a side wall raised forwardly from a periphery of the back wall and extending along the outside of the periphery of the display device. A transparent film is adhered to the entire display surface and extends beyond the periphery of the display surface from where the film is adhered to the display surface. An outer edge of the film, being an edge in the extension direction, is mounted to the side wall. Accordingly, the film forms a front surface of the display apparatus.

Abstract: A tape carrier package includes: a flexible substrate having an end portion that is formed with two recesses spaced apart from each other; a plurality of conductive leads provided on the flexible substrate in a manner to form a pin-like contact array on the end portion of the flexible substrate between the recesses in the end portion of the flexible substrate; and an integrated circuit provided on the flexible substrate and coupled to the conductive leads. A liquid crystal display panel includes: a panel body having a contact region; a driver printed circuit board; and a plurality of the aforesaid tape carrier packages. The pin-like contact array of the conductive leads on the end portion of the flexible substrate is connected to the contact region of the panel body and the driver printed circuit board.

Abstract: A solar-powered LCD device, e.g., for a clock, includes a solar cell arrangement and a liquid crystal display. The solar cell arrangement includes an at least partially transparent carrier and at least one solar cell provided with at least one at least partially transparent contact, at least one first polarizer, a first at least partially transparent carrier, a first at least partially transparent contact, a liquid crystal, a second transparent contact, a second transparent carrier, a second polarizer, and a reflector in a stacked arrangement. The carrier of the solar cell arrangement is one of the carriers of the liquid crystal display.

Abstract: A transformer for an inverter includes: a bobbin including at least one barrier rib between a pair of opposing side-walls, and a coil winding part divided into a low voltage side and a high voltage side by the barrier ribs, two or more strands of a coil being wound around the coil winding part of the low voltage side; and a ferrite core inserted into the bobbin, the ferrite core surrounding the bobbin and guiding a magnetic flux.

Abstract: A heat dissipator of a signal transmission member for a display apparatus can sufficiently dissipate heat from devices of the signal transmission member and protect the devices, and includes a thermal conductive supporter for dissipating heat generated by a signal transmission member, which transmits electrical signals between a chassis member supporting a panel displaying image and including at least one device and a circuit unit separated from the chassis member to drive the panel. The thermal conductive supporter includes: a base portion formed of a thermal conductive material, and having a side surface contacting the chassis member and another side surface contacting the signal transmission member; and a recess portion oriented on the base portion toward the chassis member so that the at least one device does not contact the base portion.

Abstract: A backlight unit includes at least one cold cathode fluorescent lamp arranged at a lower end of a bottom cover, external electrode fluorescent lamps arranged on the bottom cover above the cold cathode fluorescent lamp, and inverters disposed on a rear side of the bottom cover for driving the at least one cold cathode fluorescent lamp and the external electrode fluorescent lamps.

Abstract: The present disclosure relates to a liquid crystal display (LCD). There is provided an LCD comprising at least one lamp, a light guide plate for converting light incident from the lamp into a surface light source, an LCD panel disposed above the light guide plate for displaying an image thereon, a first reflection plate disposed below the light guide plate and including an end bent to extend parallel to a surface of the light guide plate such that the reflection plate can surround the lamp installed on the surface of the light guide plate, a mold frame including a space for accommodating the lamp, the light guide plate, the LCD panel and the reflection palate therein and including a portion of a sidewall protruding into the LCD to surround the top of the lamp, and a second reflection plate disposed on a rear surface of a portion of the mold frame arranged above the lamp. Therefore, a thin and lightweight LCD can be obtained and lamp efficiency can also be improved.

Abstract: A plasma display apparatus comprising a panel displaying images, a circuit board that drives the panel, and a chassis base that supports the panel and the circuit board. A signal transfer member couples the panel and the circuit board, and a protection plate protects the signal transfer member and a device mounted on the signal transfer member by covering the signal transfer member and the device. The protection plate is coupled with the chassis base by a coupling means, and a damage protection means, which is disposed on a side of a coupling part of the protection plate and the chassis base, prevents damage of the device by distributing a coupling force.

Abstract: When image data is displayed on the display portion of a conventional mobile telephone, characters cannot be displayed thereon, and thus the image data and the characters cannot be simultaneously displayed. In a portable electronic device according to the present invention, a cover member having a first display device (101) for displaying an image (digital still image or the like) and a second display device (102) having a touch input operational portion (for displaying characters, symbols, or the like) are attached to each other so as to allow opening and closing.

Abstract: A liquid crystal module provides for concave shaped recesses formed in an elastic member along the circumference of a linear light source that is arranged on the side of a light guide, and lamp holders attached to both ends of the linear light source, while ring-shaped hard members are engaged with the recesses. Thus, the hard members serve as a grip against an impact applied to the linear light source, and the linear light source is prevented from being damaged. Accordingly, a sidelight-type liquid crystal module with a liquid crystal panel is thereby obtained, in which the damage to the linear light source (when an impact, or the like, is applied to the liquid crystal panel) is prevented by simple means without affecting the quality of light that is emitted toward the liquid crystal panel.

Abstract: A color filter and a method of manufacturing a color filter is provided, wherein fluctuation of chromaticity of a color pattern for every opening can be controlled and the color filter has little color shading. One embodiment of the present invention is a substrate having a pattern comprising a transparent substrate and a grid partition wall pattern formed on the transparent substrate, wherein there are openings partitioned by the grid partition wall pattern, and wherein there is a pass through the grid partition wall pattern between at least two adjacent openings.

Abstract: A liquid crystal display device (1), comprising a liquid crystal display panel and an illumination unit (10). The illumination unit (10) further comprises a housing (11) having a rectangular bottom wall face and having, at its side peripheral edge parts, cut and erected pieces (141) and (142) formed by cutting out a part of the bottom wall surface and projecting the cutout parts to the rear surface, and a frame-shaped intermediate frame (20) having a display window (200) at its center part to which an illuminating member stored in the housing (11) is fixed. The intermediate frame (20) comprises locking pieces (231) inserted into opening parts (140) formed, when the cut and erected pieces are cut and raised, at positions corresponding to the cut and erected pieces (141) and (142).

Abstract: A liquid crystal display device of the present invention includes (i) a temperature sensor provided in at least one of pixels in a displaying area of a display panel, (ii) a lead line buried in the display panel, for transmitting a detection signal from the temperature sensor to a vicinity of the display panel, (iii) a temperature measurement control section for measuring a pixel temperature based on the detection signal transmitted from the temperature sensor, (iv) a data signal line driving section for outputting the data signal to the data signal lines in accordance with the pixel temperature measured in the temperature measurement control section.

Abstract: The object of this invention is to provide a display device with an image sensing device, which can match lines of sight by a simple arrangement and realize a high pixel density, low cost and low profile. To this end, the display device with an image sensing device has a display unit that includes a plurality of display pixels, a light-shielding member arranged between neighboring display pixels, and an image sensing unit arranged on a back portion of the display unit; the light-shielding member has an opening for guiding light toward the image sensing unit and the image sensing unit has an imaging lens at a position corresponding to the opening.

Abstract: Disclosed is an optical sensing device including a source unit providing a beam of light with continuously modulated phase retardation between p- and s-polarization components of the light by employing a LCM; a reference unit receiving a first part of the light to provide a reference signal; a SPR sensing unit receiving a second part of the light to induce a phase retardation change between the p- and s-polarization components due to SPR associated with a sample; a probe unit receiving the light after SPR to provide a probe signal; and a detection unit connected to the reference unit and the probe unit to detect characteristics of the sample by comparing the reference signal with the probe signal. By using active phase modulation technologies and differential phase measurement, it is possible to fulfill chemical and biological detection.

Abstract: A space light modulating apparatus includes a modulating unit that modulates incident light based on an image signal including a plurality of pixels and a light-shielding part placed between the pixels, and a refracting unit that refracts modulated light including a group of prisms formed with a prism element that has at least a refracting surface. Light from the pixels is incident on at least a part of the prisms, and a direction of the refracting surface is such that a projection image of the pixels is guided onto a projection image of the light-shielding part on a projection surface at a predetermined distance. The refracting surface and a reference surface formed in a direction perpendicular to an optical axis make a predetermined angle.

Abstract: A TFT array substrate is provided with an auxiliary capacitance that has a plurality of lower electrodes disposed for each pixel in the row and column directions below a pixel TFT and connected to the drain area of the corresponding pixel TFT. The distances L1 and L2 between separation areas formed between the lower electrodes adjacent in the row direction and the channel areas of the two pixel TFTs that correspond to the lower electrodes are substantially equal to each other. The distances L3 and L4 between separation areas formed between the lower electrodes adjacent in the column direction and the channel areas of the two pixel TFTs that correspond to the lower electrodes are substantially equal to each other. Furthermore, an upper electrode is disposed above the separation areas.

Abstract: A method of forming a cell identification includes forming a metal layer on a substrate, coating a photoresist material on the metal layer to form a photoresist film, exposing the photoresist film through a mask including a light-blocking pattern corresponding to a cell identification pattern, developing an exposed photoresist film, etching the metal layer using a developed photoresist film to form a metal pattern including the cell identification pattern, and irradiating a laser beam onto a symbol of the cell identification pattern.

Abstract: An LCD apparatus includes first and second substrates, and a liquid crystal layer. The first substrate includes a main region having switching device and first electrodes, and a sub region having a second electrode. The switching device applies a data signal to the first electrodes in response to a gate signal applied to the second electrodes. The sub region is disposed at a circumference of the main region. The second substrate includes a third electrode that faces the first and second electrodes. A reference signal that has a different magnitude from the gate signal is applied to the third electrode. The liquid crystal layer is interposed between the first and second substrates. According to an embodiment of the present invention, a bright line surrounds main region through which images are displayed. Thus, the bright line brings out the images. That is, the images are better defined.

Abstract: A liquid-crystal display, having a plurality of pixel areas and a plurality of photodetection areas for detecting light disposed in a two-dimensional manner, includes first switching elements each provided for the corresponding pixel area and switching the drive of the corresponding pixel area, and second switching elements formed on the same layer as the first switching elements and each switching a photosensor element provided for the corresponding photodetection area. First sensor electrodes connected to the photosensor elements are formed on the same layer as switching electrodes connected to the second switching elements.

Abstract: A method of producing a relief structure on a patterned conductor comprises the steps of; coating a layer of conductive material onto a transparent substrate, coating a layer of metal onto the layer of conductive material, coating a layer of photoresist onto the layer of metal, curing the layer of photoresist, exposing a desired pattern of transparent conductors through a first mask onto the layer of photoresist, developing the photoresist and simultaneously etching the layer of the conductive material and the layer of metal, exposing a desired pattern of metal conductors through a second mask onto the remaining layer of photoresist, developing the photoresist and etching the layer of metal, applying a further layer of photoresist, curing the further layer of photoresist, exposing the further layer of photoresist thorough the substrate, developing the photoresist and allowing the layer to dry, resulting in a pattern of spacers/reliefs in registration with the metal conductors.

Abstract: In a display device that displays by allowing external light to be incident from outside, and reflecting the incident external light so as to output the incident external light from a display surface, a porous body having a front face that is provided on the display surface side is used. Moreover, a colorless and transparent material is used for this porous body, an one-end opening is formed on the front face side in the porous body, and plural small pores that are independent of one another are provided inside the porous body.

Abstract: A liquid crystal device is provided comprising: a liquid crystal panel displaying grayscale levels by applying a driving signal to a pair of electrodes having liquid crystal interposed therebetween and displaying white when voltage is applied, the driving signal having a pulse width that is modulated according to the grayscale level; a temperature detecting unit detecting a temperature of the liquid crystal panel; a discrimination unit discriminating whether the temperature detected by the temperature detecting unit is a predetermined threshold value or more; and a pulse width defining unit that defines the pulse width according to the grayscale level such that the pulse width of the driving signal is gradually increased as the grayscale level becomes bright when the temperature is the threshold value or more; and changes the pulse width such that the pulse width corresponding to the darkest grayscale level is larger than the pulse width corresponding to that at which the temperature is the threshold value or