254results about How to "Improve crosstalk" patented technology

The invention discloses a display panel, a display device and a driving method of a pixel circuit. The pixel circuit comprises a data writing module, a light-emitting control module, a driving control module, a threshold compensation module, an anode reset module, a node initialization module and an organic light-emitting diode. The threshold compensation module can compensate the drift of threshold voltages of a driving transistor so that light-emitting working currents of a light-emitting device which is driven by the driving transistor are only related to signals of data cables and voltages of a reference signal end and not related to the threshold voltages and a first power supply voltage end, and the influence of the threshold voltages and IR Drop on currents which flow through the organic light-emitting diode can be avoided. Furthermore, the anode reset module can reset an anode potential of the organic light-emitting diode so that the organic light-emitting diode does not emit light completely in a dark state. In addition, an initial signal end and the reference signal end are set separately, not only can the problems of crosstalk and uneven display of the circuit be improved, but also the range of data signals can be increased.

A space division multiplexed (SDM) transmission system that includes at least two segments of transmission media in which a spatial assignment of the two segments is different is provided. For example, the SDM transmission may include a first segment of transmission media having a first spatial assignment and a second segment of transmission media having a second spatial assignment, wherein the first spatial assignment differs from the second spatial assignment. An example method obtains an optical signal on a first segment of transmission media having a first spatial assignment and forwards the optical signal on a second segment of transmission media with a different spatial assignment. The transmission media may be a multi-core fiber (MCF), a multi-mode fiber (MMF), a few-mode fiber (FMF), or a ribbon cable comprising nominally uncoupled single-mode fiber (SMF).

An embodiment of the invention provides a display panel and a display device. The absorption and scattering functions of an organic film layer in the light ray propagation process are reduced throughthinning treatment of a partial area of the thicker organic film layer of the display panel, the effective transmission rate on the display panel is increased, and loss and crosstalk of light ray signals after light rays pass by an organic film in the fingerprint recognition process are reduced, so that the sensitivity and the recognition accuracy of light-sensing fingerprint recognition are improved.

The present application discloses a display device including a display portion for displaying a composite image of left and right images to be viewed by left and right eyes by using display elements arranged in a matrix. The display portion defines first and second element groups for displaying the left and right images, respectively. The first element groups include first and second height group situated at first and second vertical positions, which is different from each other. The second element groups include first and second adjacent groups horizontally adjacent to the first and second height group, respectively. The first and second adjacent groups include first and second adjacent elements adjacent to the first and second height groups, respectively. The first adjacent element emits different light in a luminescent color from the second adjacent element.

The invention relates to a three-frequency frequency reconfigurable antenna for coplanar waveguide feed, which comprises a metal microstrip on the upper layer, a dielectric substrate on the middle layer and a back floor board on the lower layer. The metal microstrip comprises a radiating patch, a coplanar waveguide floor board, a coplanar waveguide feeder, a matching branch and four PIN (P-Intrinsic-N) diodes, and the radiating patch is surrounded by the coplanar waveguide floor board. The coplanar waveguide floor board is connected with the radiating patch through the four PIN diodes, the coplanar waveguide feeder is arranged at a central opening on the lower edge of the coplanar waveguide floor board and is connected with the radiating patch into a whole, and the matching branch is connected with the upper part of the coplanar waveguide floor board into a whole. The back floor board is arranged on the back of the dielectric substrate and corresponds to metal coatings on the lower part of the coplanar waveguide floor board and under the coplanar waveguide feeder, and a microstrip antenna is formed by the back floor board and the metal microstrip. The three-frequency frequency reconfigurable antenna can work on three wireless communication frequency bands of 0.9GHz, 1.8GHz and 2.4GHz. Moreover, directional diagrams on the three frequency bands basically remain unchanged and have larger bandwidth. Meanwhile, the design of a switch bias circuit can be eliminated, and the impact of a switch on the radiation performance of the antenna can be reduced.

There is provided a display device that includes a display portion and a drive compensation portion. The display portion line-sequentially displays, in an image display region, a first image based on a first image signal and a second image based on a second image signal, by sequentially switching the first image and the second image at a predetermined interval. The drive compensation portion performs predetermined drive compensation on the first image signal and the second image signal input to the display portion, in accordance with a position of the image display region, a luminance of the first image and a luminance of the second image. The predetermined drive compensation is performed such that an average luminance of the first image or the second image becomes substantially uniform in the image display region during a predetermined period that is shorter than the predetermined interval.

An image capturing apparatus includes a sensor, an organic light emitting diode display panel, and a collimator. The organic light emitting diode display panel is disposed on the image pickup side ofthe sensor. The collimator is disposed between the organic light emitting diode display panel and the sensor. The collimator includes a plurality of collimator elements overlapping each other. Each ofthe plurality of collimating elements includes a light-transmitting substrate and a light-absorbing layer disposed on the light-transmitting substrate. The light absorbing layer includes a pluralityof light transmissive openings, and the plurality of light transmissive openings exposes a plurality of sensing regions of the sensor.

The invention provides a three-dimensional storage device array structure and a manufacturing method thereof. The three-dimensional storage array is formed by the derivation of grid control PNPN vertical selection tubes connected in series mutually and a storage cell of a resistant transformation or phase transformation cell in a three-dimensional space. The cross interference and leakage of electricity problems between adjacent units of the storage array in operation are improved effectively through the storage cell with high switching current ratio, also the structure of the storage cell issimplified, the multi-layer stacking is realized, and the storage density is improved.

Providing an optical transceiver module that reduces electric crosstalk between a light emitting device and a photodetector while providing an excellent high-frequency characteristic, and an optical transceiver including the same. According to the invention, a first metal plate having a first substrate for mounting a light emitting device and a at second metal plate having a second substrate for mounting a photodetector are provided separately and independently of each other in a resin package, thus reducing the parasitic capacitance. This provides an optical transceiver module capable of suppressing electric crosstalk where part of a high-frequency signal causes a variation in the potential at a terminal of a photodetector while improving the high frequency characteristic in driving the light emitting device with a high-frequency signal, and an optical transceiver including the same.

A liquid crystal display device includes a gate driver for generating a first scan signal voltage and a second scan signal voltage, a source driver for generating a first polarity data voltage and a second polarity data voltage, and a liquid crystal display panel having a first pixel set and a second pixel set. Each first and second pixel set includes a first pixel and a second pixel. Both the first pixel of the first pixel set and the second pixel of the second pixel set display grey level based on the first polarity data voltage in response to the first scan signal voltage. Both the second pixel of the first pixel set and the first pixel of the second pixel set display grey level based on the second polarity data voltage in response to the second scan signal voltage.

The invention relates to a novel dual-frequency and polarization reconfigurable antenna which comprises a three-layer structure: a big metal layer, a small metal layer, a radio-frequency PIN diode and capacitors are arranged on the front, a medium plate layer and an input port are arranged at the middle, and a metal feeder line is arranged on the back of the medium plate layer, wherein in the metal layer, a square spiral big gap and a right-angle small gap are etched on the whole metal surface to form a big metal layer and a small metal layer. Meanwhile, the radio-frequency PIN diode and two blocking capacitors are bridged on the big and small gaps, thus the reconfigurable function is realized by controlling the working state of the diode. The reconfigurable antenna provided by the invention can work on two mainstream wireless communication frequency bands of 1.6GHz and 3.0GHz, and is in a right-handed circular polarization state on 1.6GHz and a linear polarization state on 3GHz. The antenna has relatively great bandwidth on the two working frequency bands. With the characteristics, the antenna provided by the invention has great prospects in engineering application.

The embodiment of the invention discloses a common voltage calibration circuit, a circuit board and a display device and relates to the technical field of display. The precision and stability degree of common voltage which is actually input to a common electrode can be improved. The common voltage calibration circuit comprises a differencing module, an integral module, a compensation module and asummation module; the input end of the differencing module is connected with the input end of the common voltage and the feedback end of the common voltage, the differencing module is used for acquiring a voltage difference value of the input end of the common voltage and the feedback end of the common voltage, and the voltage difference value is output through the output end; the input end of theintegral module is connected with the output end of the differencing module, the output end of the integral module is connected with the input end of the summation module, and the integral module isused for controlling the precision of the common voltage; the input end of the compensation module is connected with the output end of the differencing module, the output end of the compensation module is connected with the input end of the summation module, and the compensation module is used for compensating the common voltage; the output end of the summation module is connected with the outputend of the common voltage, and the summation module is used for overlapping and outputting results output by the integral module and the compensation module.

The invention discloses an integrated data cable for power and data transmission. A first insulating layer covers power copper conductors. An inner sheath layer covers the first insulating layer. A second insulating layer covers data copper conductors. A single-face aluminum foil layer covers the second insulating layer. The inner sheath layer and the single-face aluminum foil layer are located on the two sides of a partition plate respectively. A first side tail wing part, the partition plate and a second side tail wing part are sequentially connected. The first side tail wing part and the second side tail wing part are located on the two sides of the partition plate. A polyester belt layer covers the inner sheath layer, the single-face aluminum foil layer, the partition plate, the first side tail wing part and the second side tail wing part. A double-face aluminum foil layer covers the polyester belt layer. A flame retarding layer covers the double-face aluminum foil layer. By the adoption of the mode, the integrated data cable has long service life, higher balance and reliability, reflection and absorption of high-frequency electromagnetic waves are improved, crosstalk and signal attenuation are improved; meanwhile, crosslinking strength of a base material is enhanced, and the integrated data cable has good physical mechanical performance such as tensile strength and tearing strength.

The present invention discloses a driving method of a display device. A plurality of pixel units on each scanning line are divided into a plurality of blocks for scanning and driving, a plurality of interval times are inserted into the scanning period of each scanning line to separate rising edges and falling edges of scanning signals of adjacent blocks, and the thin film transistor of the final pixel unit in each block is able to have fully time to complete charge and switch off with no need for regulation and changing of the duty cycle of the scanning signals. According to the invention, the influence of a delayed effect caused by a parasitic resistance and a parasitic capacitance on a scanning line is effectively reduced, and therefore the problem of signal crosstalk may be improved.