Abstract: A stripline coupler for a RFID system is provided. The coupler is configured to communicate with a targeted transponder from among a group of multiple adjacent transponders. The coupler may include a conductive strip, a terminating load, a dielectric material, a first ground plane, and a second ground plane. The conductive strip extends between the first and second ground planes and the dielectric material from an input end connected to a transceiver to a loaded end connected to the terminating load. The conductive strip may be configured to propagate electromagnetic fields concentrated in a near field region of the conductive strip in a direction generally perpendicular to the conductive strip to couple with a targeted transponder. The coupler may include an enclosure for directing the electromagnetic fields. The conductive strip may have a tapered or non-linear profile such as a modified bow-tie profile, an exponential profile, or a Klopfenstein profile.

Abstract: The present invention relates to an artificial satellite tracking antenna installed in moving objects, such as vehicles, ships, trains, or the like, and automatically tracking position of the satellite such that viewers may conveniently watch satellite broadcasting when in motion without adjusting the antenna.

Abstract: The invention relates to a wireless communication device that is coupled to an energy source, such as a battery, capacitor, or solar cell. The wireless communication device is coupled to a slot in the energy source to form a slot antenna for wireless communication. The slot antenna receives communication signals from an interrogation reader or other communication device. The wireless communication device may be attached to a device or container for purposes such as communicating information regarding identification, manufacturing, tracking, and the like. The wireless communication device may also be coupled to the energy source for power.

Abstract: Provided is an antenna which has a small-sized planar constitution as can be easily mounted on a small-sized radio device and which can form a principal beam having a vertical polarization in directions of low and high elevation angles. On the surface of a substrate 11, slot elements 13A and 13B having a length of about one half wavelength are arranged in parallel at a predetermined distance d1, and a reflecting plate 14 is arranged at a predetermined distance h from the mounting face of the slot elements 13A and 13B. On the back of the substrate 11, parasitic elements 15A to 15D are made of a copper foil pattern and are arrayed to intersect the slot elements 13A and 13B at right angles. A switching element 16A is connected with the parasitic elements 15A and 15B, and a switching element 16B is connected with the parasitic elements 15C and 15D.

Abstract: A mono-conical antenna serving as a dielectric-loaded antenna includes: (i) a electricity supply electrode, which has a conical surface; (ii) an earth electrode, which has a flat surface that is so positioned as to face an apex of the conical surface; and (iii) a dielectric member, which is provided between the conical surface and the flat surface. The dielectric member has an outer circumferential surface which has such a slope that extends from a side of the conical surface to a side of the flat surface. This allows the dielectric-loaded antenna to have a small size, and to handle a wider frequency band in which the maximum value of the VSWR is restrained to be small.

Abstract: An antenna is provided comprising a first group of part-spherical dielectric lenses supported on a first portion of a conducting ground place arranged to reflect signals emerging from the lens, each of the lenses having a number of associated switchably selectable antenna feed elements arranged around the periphery of at least one sector of the lens for injecting signals into and/or receiving signals propagated by the lens, wherein each lens and the associated feed elements of the first group has a different orientation and may be operated to provide coverage in respect of a different region. The antenna also comprises a second group of one or more spherical or part-spherical dielectric lenses and associated switchably selectable antenna feed elements, oriented and operable to provide coverage to a region other than that covered by lenses of the first group.

Abstract: An antenna apparatus includes a feed element, a passive element provided so as to be distanced from the feed element, a cable connected to the feed element, a main circuit board to which the feed element and the passive element are mounted, an antenna holder having a holder main surface on which the main circuit board with the feed element and the passive element is held, a first feed element provided surface formed on the holder main surface of the antenna holder in order to hold the feed element and a first passive element provided surface formed on the holder main surface of the antenna holder in order to hold the passive element.

Abstract: A multiple band capacitively-loaded magnetic dipole antenna includes a plurality of magnetic dipole radiators connected to a transformer loop where the magnetic dipole radiators include at least one capacitively-loaded magnetic dipole radiator. The transformer loop has a balanced feed interface and includes a side that provides a transformer interface of quasi loops formed by the plurality of magnetic dipole radiators. Each quasi loop has a configuration and length to maximize antenna performance within a different frequency band. The at least one capacitively-loaded magnetic dipole radiator may be formed with a meander line structure and may include an electric field bridge such as a dielectric gap, lumped element, circuit board surface-mounted, ferroelectric tunable, or a microelectromechanical system (MEMS) capacitor.

Abstract: A rigid antenna support structure is designed and prefabricated to rest on two or more existing support foots normally found on a roof or similar structure. The antenna support structure, to which antennas are attached, possess mounting brackets associated with the exterior of the structure configured to accept a plurality of vertical support members composed of a substantially RF transparent material. Attached to the vertical support members are a number of horizontal support members thereafter forming a concealment assembly skeleton. A plurality of RF transparent panels are then connected to the horizontal support members so as to form a concealment assembly that conceals the antenna support structure and antennas. The concealment assembly is environmentally and aesthetically pleasing, and retains RF transparency so as to not to attenuate the RF signals being sent to or originating from the antennas housed within.

Abstract: The invention relates to portable interactive display systems, which may be used with for instance advertising using multimedia presentations. Past portable display systems have not allowed the audience to interact with the display in an effective manner. The device of the invention is configured to be mounted on the human body with a general support frame (20) while displaying a video image from a display (70). A carrying sack (40) contains media generating means. An input device allows the audience to interact with the display system to play video games or use software applications, wherever the display system may be.

Abstract: The object of the invention is to improve visibility when a stereoscopic two-dimensional image display apparatus is obliquely installed. A stereoscopic two-dimensional image display apparatus includes: a display unit 1 having an image display surface 1A displaying a two-dimensional image; and a micro lens array 3 (image transfer panel) that displays a stereoscopic image on a stereoscopic image display surface 2 in space separated from the image display surface 1A by focusing light emitted from the image display surface 1A on the stereoscopic image display surface 2. In the stereoscopic two-dimensional image display apparatus, when a housing 20 provided with the micro lens array 3 is tilted at an angle ? to the stereoscopic image display surface 2, the display unit 1 is tilted at an angle 2?, which is two times the angle ?, in synchronization with the tilting of the micro lens array 3.

Abstract: An LED drive circuit of the disclosed subject matter can include an LED unit and a serial circuit connected in parallel therewith. The serial circuit includes a resistor and a positive temperature coefficient resistor having a positive linear temperature coefficient. A voltage across the positive temperature coefficient resistor is fed back to an output control circuit. An output voltage that is PWM-controlled on the basis of a reference voltage set at the output control circuit is used to drive the LED unit.

Abstract: A method of driving a plasma display apparatus is disclosed. In the method, a first pulse of a negative polarity is applied to a scan electrode prior to a reset period. A second pulse is applied to the scan electrode during the reset period. The second pulse gradually rises from a first voltage to a second voltage with a first slop, and then gradually rises from the second voltage to a third voltage with a second slope. The first slope is different from the second slope.

Abstract: A method of driving a plasma display apparatus is provided. In the method, a positive first pulse and a negative second pulse are alternatively supplied to a first electrode in a sustain period. A second electrode sustains a ground level in a second electrode while the positive first pulse is supplied to the first electrode. Then, the absolute voltage values of the positive first pulse and the negative second pulse are controlled to be different.

Abstract: A method of driving a plasma display apparatus is disclosed. In the method, a scan pulse is applied to a scan electrode during an address period, and a data pulse corresponding to the scan pulse is applied to an address electrode during the address period. The scan pulse falls from a scan reference voltage to a first intermediate voltage, is maintained at the first intermediate voltage, and falls from the first intermediate voltage to a scan voltage.

Abstract: A plasma display panel and a method of driving the same are disclosed. The method of driving the plasma display panel includes applying a first pulse to the scan electrode during a reset period, applying a third pulse wherein the third pulse comprises a rising period and a maintaining period, and the rising period ranges from about 75 ns to about 800 ns, applying a fourth pulse, and a voltage difference between the lowest voltage level of the fourth pulse and the lowest voltage level of the second pulse ranges from 5V to 50V, applying a plurality of pulses to the scan electrode, and wherein the upper dielectric layer and the lower dielectric layer have Pb whose amount is equal to or less than 1000 ppm, respectively.

Abstract: A method of driving a Plasma Display Panel (PDP) includes: arranging discharge cells in the PDP to each include sustain electrode lines and address electrode lines crossing each other; defining a display period in which each frame includes a plurality of subfields, each subfield having a corresponding gray scale weight for displaying a time division gray scale and a reset period, an address period, and a sustain-discharge period; biasing the sustain electrode lines to a first level; sequentially supplying a scan pulse of a second level to the sustain electrode lines and a data pulse synchronized with the scan pulse to the address electrode lines corresponding to selected discharge cells in the address period; and supplying a sustain pulse of a third level voltage and a sustain pulse of a fourth level voltage to the sustain electrode lines in the sustain-discharge period; the second level voltage and the fourth level voltage are supplied by the same power source.

Abstract: A method of driving a plasma display apparatus is disclosed. In the method, a first pulse with a gradually rising voltage is applied to a scan electrode during a setup period of a reset period. A second pulse gradually falling from a first voltage to a second voltage is applied to the scan electrode during a set-down period of a reset period. A positive third voltage is applied to an address electrode during the set-down period. A voltage of the address electrode floats during the set-down period after applying the third voltage.

Abstract: An apparatus for driving a plasma display panel is disclosed. In one embodiment, the apparatus includes i) first and second electrodes configured to generate a sustain discharge in a frame which includes a plurality of subfields and ii) a driver configured to provide a series of driving pulses to at least one of the first and second electrodes in at least one of the plurality of subfields. At least the last one of the series of driving pulses has a greater rising and/or falling time than those of the remaining driving pulses. According to at least one embodiment, the rising or falling time of the last one or several sustain pulse(s) applied to sustain electrodes during a sustain discharge period of one or more subfields is adjusted to be greater than those of the other sustain pulses, thereby reducing the appearance of an afterimage.

Abstract: An organic light emitting diode (OLED) display device is described, the display device having a plurality of pixels each comprising at least two sub-pixels of different types, a first sub-pixel type comprising an OLED device including a first type of OLED material and a second sub-pixel type comprising an OLED device including a second type of OLED material, and wherein at least one of said first and second types of sub-pixel comprises a plurality of series-connected OLED devices. Employing series-connected sub-pixels where different types of OLED material are used for a display such as a color, active matrix OLED display facilitates balancing sub-pixel drive voltages and hence enables the production of display devices with improved efficiency.

Abstract: When electric current is provided to a scan line of a display panel, electric current flowing from an initial end to a final end of the scan line is gradually reduced because of resistance consumption, resulting in lower brightness on both left and right sides of the display panel. Therefore, data line driving signals provided to the display panel are compensated for solving such a problem.

Abstract: A data driving circuit including n channels, where n is an integer, the data driving circuit including a shift register unit receiving data during a first input period and a second input period, the shift register unit shifting and outputting the received data, a first latch unit receiving the data input during the first input period from the shift register unit, and simultaneously or substantially simultaneously outputting the data corresponding to the first input period, and a second latch unit receiving the data input during the second input period from the shift register unit, and simultaneously or substantially simultaneously outputting the data corresponding to the second input period.

Abstract: A display apparatus includes a display panel having a plurality of display pixels two-dimensionally arrayed display pixels having pixel drive circuits and light emitting devices near at intersections of a plurality of scan lines and a plurality of data lines laid out in a row direction and in a column direction so as to be orthogonal to each other, a scan driver which applies a scan signal to the scan lines at a predetermined timing, a data driver which supplies a gradation signal corresponding to display data to the display pixels via the data lines, and a pair of power source drivers which apply a supply voltage to both ends of a plurality of power supply lines laid out in the column direction at a predetermined timing.

Abstract: The present invention relates to a light emitting device and a driving method thereof. The light emitting device comprises a plurality of data lines in a first direction, a plurality of scan lines in a second direction different from the first direction, and a plurality of sub-pixels formed on emitting areas that the data lines and the scan lines cross. A sub-pixel corresponding to a first outmost data line in the data lines emits a light having less brightness than a predetermined first brightness of the sub-pixel. The method of driving the light emitting device having a plurality of sub-pixels formed on emitting areas crossed by data lines and scan lines comprises changing first display data to second display data, and providing data currents corresponding to the second display data to the data lines. A data current provided to a first outmost data line in the data lines is less than a data current of a predetermined first gray scale.

Abstract: A light emitting element driving apparatus for driving a light emitting element, includes driving means for a executing PWM driving operation to drive the light emitting element at a predetermined duty cycle and for executing a soft-start driving operation during each ON-period in the PWM driving operation. During the soft-start driving operation, a current value of current supplied to the light emitting element is increased from a first constant current value up to a second constant current value. The driving apparatus includes parameter adjusting means for controlling the driving means such that the second constant current value is supplied to the light emitting element for a period that is longer than a period from a beginning of the ON-period to a time at which the current value of the current supplied to the light emitting element reaches the second constant current value.

Abstract: A display device (DD) comprises a light source (LS); a display panel (DP) with display pixels for modulating light originating from the light source (LS); and processing circuitry (P) coupled to the display panel (DP) and the light source (LS). The processing circuitry (P) has an input for receiving an input signal (V1) representing gray levels of pixels of an image to be displayed on the display panel (DP) and comprises: an amplifier (A) for amplifying the input signal (V1) to provide an output signal (V2) for driving the display pixels, a detector (S) for detecting whether within a part of the image a property of the output signal (V2), and—control circuitry (CM) for controlling a gain of the amplifier (A) and a brightness level of the light source (LS) in dependence on the property.

Abstract: A system for producing spatially modulated monochrome or color light having gray scale includes an active matrix liquid crystal spatial light modulator having light modulating means including (i) a layer of ferroelectric liquid crystal material which is designed to switch between ON and OFF states and (ii) active matrix means including VLSI circuitry for dividing the layer of liquid crystal material into an array of individual liquid crystal pixels and for causing each of the pixels of liquid crystal material to modulate light individually by switching between the ON and OFF states in a way that depends upon the data which the VLSI circuitry is written. The system also includes illumination means having a light source for directing light from the source into the pixel-divided layer of ferroelectric liquid crystal material in a specific way.

Abstract: A display device includes a display panel area with a plurality of pixels each including a switching element and gate lines and data lines connected to the pixels, a precharge circuit for applying a precharge voltage to the pixels to precharge the pixels, and at least two voltage transmission lines connected to the precharge circuit to transmit the precharge voltage. In this way, it is possible to test whether the data lines are short-circuited as well as if they are disconnected, in the VI test stage of a liquid crystal display of the SOG type, thereby increasing reliability.

Abstract: A liquid crystal display has a pixel array including first and second pixel electrodes. Each of the first pixel electrodes is divided into at least two first sub-pixel electrodes in two pixel areas sharing a corner or an edge. Similarly, each of the second pixel electrodes is divided into at least two second sub-pixel electrodes in two pixel areas sharing a corner or an edge. The polarities of the first and the second electrodes are opposite. The first and the second pixel electrodes are arranged alternatively to allow at least one first sub-pixel electrode and at least a second sub-pixel electrode to be located in each pixel area.

Abstract: A charge pump circuit has a first controller (in the embodiments, switches SW1a to SW4b and charge transfer transistors P2b to P4b) that increases and decreases the number of step-up units actually operated according to the specified step-up factor; and a second controller (in the embodiments, an inverter INV4) varies the step-up input voltage in one of the step-up units according to the specified step-up factor. With this configuration, it is possible to vary the step-up factor finely and in a wide range without unnecessarily increasing the number of step-up stages.

Abstract: An exemplary optically compensated bend liquid crystal display (OCB-mode LCD) (20) has a liquid crystal panel (30), which has a pixel electrode (31) and a common electrode (32); a common voltage supply unit (24) providing a common voltage signal to the common electrode; a gamma circuit (26) providing a data voltage signal to the pixel electrode; a gate driving circuit (22), which has a high-voltage supply circuit (223) providing a high voltage, higher than a max voltage signal of the gamma circuit; and a data signal switching unit (29) connecting with the gamma circuit, the high-voltage supply circuit and the liquid crystal panel. The data signal switching unit can selectively output the voltage signal from the gamma circuit or the high-voltage supply circuit.

Abstract: Provided are an apparatus using ambient light as backlight and a method for correcting colors in the apparatus. The apparatus includes a color correction matrix generator and a color corrector. The color correction matrix generator generates a first color correction matrix for correcting a second color conversion matrix when ambient light is used as backlight into a third color conversion matrix for the original backlight. The color corrector corrects colors using the first color correction matrix.

Abstract: A liquid crystal driving device is provided which enables an overshooting driving operation in transition among all gray levels. When a voltage for displaying is controlled so as to be a highest-level value out of the voltages for displaying corresponding to an input gray level range, an overshooting driving voltage for transition to a higher voltage which is added to a voltage side being higher than the highest-value value out of the voltages for displaying is applied to a liquid crystal panel and, when a voltage for displaying to be applied to the liquid crystal panel is controlled so as to be a lowest-level value out of the voltages for displaying corresponding to the input gray level range, an overshooting driving voltage for transition to a lower voltage which is added to a voltage side being lower than the lowest-level value of the voltages for displaying is applied to the liquid crystal panel.

Abstract: A liquid crystal display panel driving device is provided which is capable of reliably improving a response speed of a liquid crystal and of obtaining good display quality. When overshooting driving is performed in a current frame for displaying, an excessive response level in a next frame is predicted based on a combination of a gray level in one past frame and a gray level in a current frame and, when an excessive response is predicted, a corrected gray-level value to prevent (or to cancel) the excessive response is calculated in advance. By applying a voltage corresponding to the corrected gray-level value, an excessive response in a next frame can be suppressed. Irrespective of whether or not an excessive response is predictable in a next frame, an overshooting driving can be performed at an applied voltage sufficiently corresponding to a target gray-level value and, as a result, a response speed of a liquid crystal can be reliably made high and good display quality can be obtained.

Abstract: A switch matrix having a plurality of switch devices each of which has switch terminals is disclosed. An input side and an output side of the switch matrix are connected through the plurality of switch devices with coaxial cables. Two of the plurality of switch devices are disposed such that their terminal sides face each other. The rest of the plurality of switch devices are disposed in a vicinity of space between the terminal sides of the two switch devices, which face each other.

Abstract: A pulse number control circuit inputs, to a charge pump circuit, pulses of a number according to digital data constituted of weighted data bits. The charge pump circuit includes a pump capacitor connected between a first node to which the pulses are input and a second node, a switch element connected between the second node and an output node, and a bias circuit. According to a change of a voltage on the output node, the bias circuit changes a voltage on the second node with the same polarity.

Abstract: A thin film transistor array panel is provided, which includes: a substrate; a plurality of first signal lines formed on the substrate; a plurality of second signal lines intersecting, and intersection from, the first signal lines; a plurality of pixel electrodes formed in insulated areas of the first and second signal lines; a plurality of first thin film transistors electrically connected to the first signal lines, the second signal lines, and the pixel electrodes; a plurality of buffer electrodes capacitively coupled to the pixel electrodes and located at a boundary of the intersection areas; and a plurality of second thin film transistors electrically connected to the buffer electrodes and the first signal lines, wherein the first signal lines are connected to the pixel electrodes of a previous row.

Abstract: An LCD device includes a memory for storing image signals, a PWM clock generator for generating an aperiodic PWM clock signal according to a clock signal and a gamma correction signal, a PWM counter for generating count values corresponding to the aperiodic PWM clock signal generated by the PWM clock generator, a comparing device for comparing the image signals transmitted from the memory and the count values transmitted from the PWM counter, a PWM signal generator for generating a PWM signal with a corresponding pulse width according to a comparing result of the comparing device, an LCD panel, and a drive circuit for driving the LCD panel according to the PWM signal.

Abstract: An apparatus for driving an LCD device includes an image display unit having liquid crystal cells in respective regions defined by a plurality of gate and data lines; an over-driving apparatus to detect a signal of a moving image based on a source data and to detect modulated data based on the detected signal, the modulated data changes a response speed of a liquid crystal based on the detected signal; a gate driver to supply scan signals to the gate lines; a data driver to convert the modulated data into analog video signals and to supply the analog video signals to the data lines; and a timing controller to align the modulated data and to generate data control signal and gate control signal, the timing controller outputs the aligned data and the data control signal to the data driver and outputs the gate control signal to the gate driver.

Abstract: A display device includes a timing controller, a plurality of source drivers, and an interface. Data signals and control signals generated by the timing controller are embedded and transmitted to the source drivers via a data bus of the interface. Decoders of the source drivers can then generate corresponding data signals and control signals by decoding the embedded signals.

Abstract: An image display device includes a liquid crystal display part, a gate line driving circuit, a source line driving circuit, and a timing controller. The source line driving circuit includes a horizontal shift register, a first latch circuit, a second latch circuit, a D/A converter circuit, and a demultiplexer capable of driving a plurality of source lines divided into a plurality of batches. The timing controller includes a pulse generating circuit, a signal transmission circuit, and a shift pulse generating circuit for generating a second latch signal and for sending a shifted start signal back to the signal transmission circuit.

Abstract: A liquid crystal display device includes a liquid crystal panel; a mth gate line, a (m+1)th gate line, a (m+2)th gate line and a (m+3)th gate line in the liquid crystal panel, wherein m is a natural number; at least one data line crossing the mth gate line, the (m+1)th gate line, the (m+2)th gate line and the (m+3)th gate line; a timing controller generating a data signal, a control signal, a first flicker signal and a second flicker signal; a gate driver generating a mth gate signal and a (m+2)th gate signal using the first flicker signal and generating a (m+1)th gate signal and a (m+3)th gate signal using the second flicker signal, the mth gate signal and the (m+2)th gate signal being supplied to the mth gate line and the (m+2)th gate line, respectively, the (m+1)th gate signal and the (m+3)th gate signal being supplied to the (m+1)th gate line and the (m+3)th gate line, respectively.

Abstract: In one embodiment, the DAC includes an analog gray voltage generation unit configured to generate a plurality of analog gray voltages, and a first decoder configured to select two different voltages of the plurality of the gray voltages as a first level voltage and a second level voltage, respectively, in response to an upper K-bits of N-bit input image data. Here, N may be an integer not less than two, and K may be an integer less than N. A second decoder may be configured to repeatedly distribute the first level voltage and the second level voltage to output a plurality of distributed voltages in response to a lower L-bits of the N-bit input image data. Here, L may be equal to N subtracted by K, and L may be less than K. An interpolated voltage generation unit may be configured to generate an interpolated voltage based on the plurality of distributed voltages.

Abstract: A gate driver and a repairing method are disclosed, wherein the gate driver is provided with one or more plurality of auxiliary stages that can substitute for a disabled stage, the gate driver including a shift register provided with a plurality of first output lines; at least three output repairing lines arranged across the first output lines; at least two clock transmission lines to transmit at least two clock pulses of different phases; at least one clock repairing line arranged across the clock transmission lines; and at least one auxiliary stage connected to the output repairing lines and to the at least one clock repairing line.

Abstract: There is provided a liquid crystal comprising a liquid crystal panel with a memory effect (2) sandwiching liquid crystals of a memory effect, a driving circuit (10) outputs driving voltage for driving the liquid crystal panel with a memory effect (2) and a temperature sensor for detecting an ambient temperature, wherein the driving circuit (10) includes a control circuit (11) for varying a driving voltage. The control circuit has a first temperature compensation range where the driving voltage is increased from a high temperature side toward a lower temperature side according to temperature information detected by the temperature sensor (3), and a second temperature compensation range where the driving voltage is rendered in a maximum value at a predetermined temperature, or rendered substantially equal to, or smaller than the maximum value on a side of the boundary, lower than the predetermined temperature.

Abstract: An apparatus and method for display backlight control are disclosed.

Abstract: An electro-optical device includes a display unit having a plurality of pixels, and the display unit is divided into a plurality of areas. The electro-optical device also includes a plurality of optical sensors that are provided for the plurality of areas, each of the optical sensors being configured to detect a light intensity, and a controller that selectively performs recognition of an operation position on the display unit or measurement of an ambient light intensity on the basis of the light intensities detected by the plurality of optical sensors.

Abstract: A method for driving a planar light source device is provided. The planar light source device includes (a) a plurality of planar light source units to light a color LCD device from the back, each planar light source unit including a red LED, a green LED, and a blue LED; and (b) a driving circuit to perform ON/OFF control of the red LED, the green LED, and the blue LED included in each planar light source unit on the basis of pulse-width modulation. The method includes adjusting respective pulse-width modulation unit clocks CLR-unit, CLG-Unit, and CLB-Unit in each planar light source unit to long or short by increasing or decreasing the number of frequency division cycles of a system clock in the driving circuit.

Abstract: A rollable display device including an inner housing 102 having an inner slot 108, a rollable display 106 having a bend portion 118, which is disposed through the inner slot 108, and a strain reducer 100 operably connected to the rollable display 106 to reduce strain at the bend portion 118. The strain reducer 100 acts by increasing radius of the bend portion 31, locating a neutral line of the rollable display 106 at a selected layer of the bend portion 31, and/or reducing cycling of the bend portion 31.

Abstract: A back-loading input device for electronic equipment includes at least a chassis, an operation interface on the backside of the chassis and a screen to display a keyboard table corresponding to the operation interface to be referred by users to do input operation. Thereby input operation can be done rapidly and the size of the electronic equipment can be shrunk.