62results about How to "Reduce impedance difference" patented technology

According to some embodiments of the present invention, an impedance transformation circuit is provided for use with a transmitter, a receiver, and an antenna. The transmitter may provide transmission signals for transmission by the antenna. The antenna may provide received signals having an associated signal parameter to the receiver. The impedance transformation circuit includes an impedance adjusting circuit and a controller. The impedance adjusting circuit is connected between the antenna, the receiver, and the transmitter. The impedance adjusting circuit is configured to change an impedance difference presented between at least one of: 1) the transmitter and the antenna, and 2) the antenna and the receiver, in response to a control signal. The controller generates the control signal to change the presented impedance difference in response to a signal parameter.

The invention discloses a display panel assembly and an adjusting method thereof, and a display device. The display panel assembly comprises a display panel, a drive circuit and a control circuit. Display panel is provided with a display area and a fan-out area. The display area is provided with multiple first data lines. The fan-out area is provided with multiple second data lines with various lengths, and the multiple second data lines are connected with the first data lines. The drive circuit comprises a functional circuit and an adjustable resistor set which is connected with the output end of the functional circuit. The second data lines are coupled with the output end of the functional circuit via the adjustable resistor set which is used for reducing impedance difference of connection lines from the output end of the functional circuit to the first data lines. The control circuit is used for controlling resistance of the adjustable resistor set. Therefore, a situation of oversized signal delay difference among all the connection lines can be avoided, and thus excellent display of the display panel with uniform color and brightness can be realized.

The embodiment of the invention provides an array substrate, a display panel and a display device. The array substrate comprises a substrate; multiple grid lines, multiple data lines and multiple touch routing lines are arranged in a display region of the substrate; multiple first fan-out routing lines and multiple second fan-out routing lines are arranged in a fan-out region of the substrate and electrically connected with signal lines of the display region; any kind of signal lines comprises the first kind of signal lines and the second kind of signal lines, at least part of the first kind of signal lines is electrically connected with the first fan-out routing lines, and at least part of the second kind of signal lines is electrically connected with the second fan-out routing lines; the first fan-out routing lines comprise first fan-out routing line sections, the first fan-out routing line sections and the data lines are arranged on the same layers and made of the same materials, the second fan-out routing lines comprise second fan-out routing line sections, and the second fan-out routing line sections and the touch routing lines are arranged on the same layers and made of the same materials. The difference between the impedance of the fan-out region and the impedance between the fan-out routing lines is reduced, and the display quality is improved.

The invention relates to a liquid crystal display panel comprising a data driven module, data cables positioned in a display area and arranged in parallel and a data cable harness positioned in a fan-out area. One end of the data cable harness is connected with the output end of the data driven module while the other end of the same is connected to the data cables in the display area. The data cables in the display area are different in width. Under the conditions that the liquid crystal display panel is in shortage of space and data wiring of the fan-out area cannot be changed, the traditional equal-width data cables are replaced with the gradually-varied unequal-width data cables arranged in the display area, impedance difference between the data cables on two sides and the middle data cable on the entire liquid crystal display panel is reduced effectively, and further color cast of the liquid crystal display panel is improved.

The invention discloses a display panel and device. The display panel comprises a plurality of signal lines in a display area and a driver chip which is located in a peripheral area at one ends of the signal lines. The output ends of the driver chip are correspondingly connected with the signal lines through leads one to one. Each lead comprises two metal segments arranged in different layers, and the line width of the first metal segment is larger than that of the second metal segment. In this way, each lead between the driver chip and the corresponding signal line is set as the two metal segments arranged in different layers, that is the driver chip is connected with the signal lines through double-layer lines, so that the display panel can be provided with a narrow bezel. Besides, when the line width of the first metal segment is larger than that of the second metal segment, teh impedance difference between the double-layer lines can be reduced, and the display effect of the display panel is improved.

The invention relates to a display device and an adjusting method thereof. The display device comprises a display panel and a driving module. The display panel comprises a display area and a fan-out area. A plurality of data lines are arranged in the display area and a plurality of connecting lines are arranged in the fan-out area. The driving module comprises a detection unit for detecting the resistance value of the connecting line. The connecting line comprises a first connecting line and a second connecting line; a plurality of source driving units, wherein the source driving units are internally integrated with adjustable resistors; and a control chip electrically connected with a plurality of source driving units through function pins, wherein the control chip is used for comparing the resistance values of the first connection line and the second connection line, and outputting a control signal according to the resistance value comparison result. The source driving unit receivesthe control signal, and adjusts the resistance value of the adjustable resistor according to the control signal, so that the resistance value of the first connection line and the second connection line in the fan-out region is the same.

The embodiment of the invention discloses an array substrate and a display panel. The array substrate comprises a display area and a non-display area. The non-display area is provided with a plurality of connecting leads, the connecting leads comprise a plurality of first connecting lead bodies, the first connecting lead bodies comprise first metal wirings, second metal wirings and third metal wirings, and at least two metal wirings of the first metal wirings, the second metal wirings and the third metal wirings are located on different film layers. By means of the array substrate and the display panel in the embodiment, the signal transmission uniformity in the different connecting leads is improved, and the display panel is even in display.

The invention discloses a special-shaped display panel and a display device. A display area including a first display area, a second display area, and a third display area; A plurality of display pixels located in the display area; A signal line extending in a first direction, comprising a first signal line, a second signal line and a third signal line, the three signal lines driving display pixels in three display regions, respectively, and the third signal line comprising a third signal line A and a third signal line B; A signal connection line connected to the first signal line and the third signal line A respectively; A resistance-capacitance balancing module which constitutes a capacitance with the signal line or is connected with the signal line to increase the impedance on the signal line, wherein at least any one of the second signal line and the third signal line B is provided with a resistance-capacitance balancing module. By the invention, the impedance difference between different signal lines on the display panel can be reduced, and the display effect can be improved.

A touch panel having a touch sensing region and at least two connection regions around the touch sensing region is provided. The touch panel includes first conductive patterns, second conductive patterns, pads, and signal transmission lines. The first and second conductive patterns are disposed in the touch sensing region. Each first conductive pattern has a first end and an opposite second end. Each second conductive pattern has a third end and an opposite fourth end. The pads are respectively disposed in the connection regions. The first, second, third, and fourth ends are electrically connected to the pads in the corresponding connection region respectively through the signal transmission lines so that the distance from each first end, each second end, each third end, and each fourth end to the corresponding connection region is not greater than the distance from those to the other connection region.

A liquid crystal display panel and a method for manufacturing the same are disclosed. The liquid crystal display panel comprises a data driving module; data lines arranged in an active area in parallel with one another; and data wirings arranged in a fanout area, one end of each data wiring being connected with an output end of said data driving module, the other end thereof being connected with a data line of said active area, wherein the data lines in said active area are arranged to have different widths.

The invention provides an array substrate and a display panel. The array substrate comprises a display area and a non-display area. The array substrate comprises a first metal layer, a second metal layer, a drive chip and a third metal layer, wherein a plurality of gate lines are formed inside the display area on the first metal layer and the second metal layer, the first metal layer and / or the second metal layer extend / extends to the non-display area from the display area, and a plurality of first signal connecting lines are formed inside the non-display area; the drive chip is positioned inside the non-display area; a plurality of data lines are formed inside the display area on the third metal layer, a plurality of second signal connecting lines are formed on the third metal layer, eachsecond signal connecting line is led out from the drive chip, and each second signal connecting line is electrically connected with one corresponding first signal connecting line extending to the non-display area from the display area respectively so as to form a signal transmission line, the electrical resistivity of the third meta layer is smaller than that of the first metal layer and that ofthe second metal layer, and the difference value of impedance among the signal transmission lines is smaller than a preset threshold value. According to the array substrate and the display panel provided by the invention, the display effect is improved.

The invention provides an array substrate, a liquid crystal display panel and a liquid crystal display device. The array substrate comprises a display area and a plurality of drive chips, wherein the display area is formed by a plurality of data lines and a plurality of scanning lines in a staggered mode, and the drive chips are used for providing data signals for the data lines and providing scanning signals for the scanning lines and connected with the data lines and the scanning lines through wires. Conductive layers are arranged on the wires in the preset area, wherein the preset area is an area where the lengths of the wires are larger than a preset value. According to the array substrate, the liquid crystal display panel and the liquid crystal display device, the conductive layers are arranged on the wires with larger lengths, and therefore impedance differences between the wires are reduced, and the display effect is improved.

The invention provides ultrasonic diagnostic equipment and an ultrasonic imaging method. By obtaining first array element sensitivity or impedance, second array element sensitivity or impedance is acquired; according to the first array element sensitivity or impedance, a first compensation coefficient is determined, and according to the second array element sensitivity or impedance, a second compensation coefficient is determined, wherein the first compensation coefficient is different from the second compensation coefficient; compensation processing is carried out on a first echo signal according to the first compensation coefficient, and compensation processing is carried out on a second echo signal according to the second compensation coefficient; and the first eco signal and the secondeco signal after compensation treatment are subjected to beam synthesis, and are processed to generate an ultrasonic image. Corresponding compensation coefficients are determined according to the sensitivity or impedance of the respective array elements, then the eco signals generated by the respective array elements are compensated to reduce sensitivity or impedance difference between differentarray elements, and space consistency and uniformity of images are improved, thereby improving the final ultrasonic image display effect.

A circuit board is provided for improving signal quality, including a signal plane for a plurality of signal traces arranged thereon and a ground plane formed by a plurality of tiles connected to each other in an array. Each tile is formed by ground traces. Different line segments of a signal trace mapped on the ground plane cross ground traces of the tiles at similar angles, thereby minimizing interaction between the ground traces and the signal traces to reduce differences in impedances of the signal traces.

A flexible wiring board including a base, at least one cover, a signal conductor, and a ground conductor. The base is an elongate flexible dielectric including first and second lengthwise portions. The first portion has opposed faces in the thickness direction. The cover, dielectric being lower in permittivity than the base, is fixedly cover at least one of the faces. The signal and ground conductors at the base extend in parallel with and in spaced relation to each other. The conductors each include a first portion covered by the cover and a second portion not covered by the cover. A part of the second portion of the ground conductor situated in a second region of the second portion of the base is smaller in area than a part of the first portion of the ground conductor situated in a first region of the first portion of the base, the first region being equal in area to the second region.

A method of making a PCB dielectric layer comprises the following steps: choosing two identical prepregs when making a dielectric layer of a multilayer printed circuit board; measuring the longitudinal glass fiber spacing a and the latitudinal glass fiber spacing b of the prepregs; completely overlapping the two identical prepregs, wherein, the longitudinal glass fiber bundles of the two prepregs extend along the X-axis direction, and the latitudinal glass fiber bundles of the two prepregs extend along the Y-axis direction; moving the lower prepreg along the X-axis direction and the Y-axis direction by X1 and Y1 respectively for dislocation, wherein X1 is non-integer times of a, and Y1 is non-integer times of b; pre-stacking the dislocated prepreg and a core board to get a pre-stacked board, coating the surface of the pre-stacked board with copper foil, placing the pre-stacked board on the chassis of a press, hot-pressing the pre-stacked board to form a multilayer board, and drilling, plating and etching the multilayer board to form an impedance controlled circuit. The uniformity of dielectric constant of the dielectric layer can be improved effectively.

A circuit board is provided for improving signal quality, including a signal plane for a plurality of signal traces arranged thereon and a ground plane formed by a plurality of tiles connected to each other in an array. Each tile is formed by ground traces. Different line segments of a signal trace mapped on the ground plane cross ground traces of the tiles at similar angles, thereby minimizing interaction between the ground traces and the signal traces to reduce differences in impedances of the signal traces.

A method for feeding electric power to a planar light-emitting element which includes a planar anode electrode, a planar cathode electrode, a light-emitting layer provided between the anode electrode and the cathode electrode, two or more anode terminal portions protruding from the anode electrode and one or more cathode terminal portions protruding from the cathode electrode. The method includes sequentially providing the electric power to the anode terminal portions.

Scan lines and data lines are disposed in a display region of a substrate, and multiple pixel regions are divided thereon. Switch components are disposed in the pixel regions, and each switch component is electrically connected to the scan line and data line. Pixel electrodes are disposed in the pixel regions and each pixel electrode is electrically connected to the switch component. Wires are disposed in a non-display region of the substrate, and at least one portion of each wire includes a first and a second conductor layer, wherein the second conductor layer is disposed on the first conductor layer and parallel-connected to the first conductor layer. The first conductor layer and one of the scan lines, data lines, and the pixel electrodes are in the same layer. The second conductor layer and another one of the scan lines, data lines, and the pixel electrodes are in the same layer.

The present invention provides a stimulation electrode structure for an artificial retina. The structure comprises an insulating substrate which is formed by a flexible material with biological compatibility, and a plurality of stimulation electrodes which are arranged in the insulating substrate and form an array body which is arranged along a two-dimensional direction parallel to the insulating substrate. The stimulation electrodes protrude from the surface of the insulating substrate. Each of the stimulation electrodes comprises a base section and an exposed section. The electrode height of each stimulation electrode is equal to a sum of the height of the base section and the height of the exposed section, the heights of the stimulation electrodes are roughly the same, and the exposed sections of the stimulation electrodes are gradually reduced from the center of the array body to the edge of the array body. In the electrode array of the artificial retina in the invention, the array body formed by three dimensions of stimulation electrodes, at the same time the impedance difference between the stimulation electrodes is reduced, and thus the retina can be more effectively stimulated.

The invention relates to an array substrate, a display panel and a vertical light line repair method for the display panel. The array substrate is divided into a display region and a non-display region and comprises gate lines, data lines, a terminal region and a fan out region, wherein the gate lines and the data lines are arranged in the display region; the terminal region is arranged in the non-display region; a driving chip is arranged in the terminal region; the fan out region is arranged in the non-display region; at least one pair of fan out routes which are consistent in route shape and are configured in parallel up and down are arranged in the fan out region; the fan out routes include a first fan out route and a second fan out route; the first fan out route is isolated from the second fan out route by an insulation layer; the insulation layer is provided with at least one via hole; and the first fan out route and the second fan out route are connected and conducted mutually through the via hole. The impedance difference can be greatly reduced, a vertical light line caused by breakage of the first fan out route or the second fan out route is improved, and an occurrence rate of the vertical light line is reduced.

A display panel and an electronic device is provided. A voltage drop value of the clock input transistor of a pull-up module of m1st GOA unit connected to an n1st clock signal line is greater than a voltage drop value of the clock input transistor of a pull-up module of m2nd GOA unit connected to the n2nd clock signal line. Based on this circuit structure, a CK impedance difference existing in 8K ultra-high resolution electronic devices can be alleviated.

The invention provides a side-by-side cable which comprises at least two conductors and insulating layers respectively coating each conductor, wherein the conductors and the insulating layers form a wire; two wires are arranged side by side and then are coated by one coating layer; and the coating layer is coated on the outer layers of the two wires which are arranged side by side by adopting a polyester tape; and the insulating layers are dielectric media by which the cables are insulated; each conductor is further coated by the insulating layer through an Teflon wire; the coating layer further comprises a copper foil which is coated on the outer layer of the wire; and the polyester tape is coated on the outer layer of the copper foil. Compared with general twisted pair cables, the side-by-side cable disclosed by the invention is more stable in performance and smaller in impedance difference and delay difference.

The invention discloses a fan-out wire structure, a display panel and a display device. The fan-out wire structure comprises a first fan-out layer, a second fan-out layer, and an insulating layer arranged between the first fan-out layer and the second fan-out layer; the first fan-out layer, the second fan-out layer and the insulating layer are arranged from top to bottom; the first fan-out layer comprises a plurality of first wires arranged at intervals; the second fan-out layer comprises a plurality of second wires arranged at intervals; the first wires and the second wires are alternately arranged; and the first wires and the second wires which are adjacent are partially overlapped. According to the technical scheme, the first fan-out layer and the second fan-out layer are arranged, andthe first wires and the second wires which are adjacent are partially overlapped and insulated mutually; and through the two-layer structure arrangement, when the space is compressed, the first wiresand the second wires have larger design space, so that the impedance difference of the wires is reduced.

The invention discloses a composite material for shielding electromagnetic radiation, and the composite material is prepared from raw materials of silicon carbide fiber, thermoplastic acrylic resin, aferrocene organic magnet, N-phenyl-beta-naphthylamine, zinc stearate, polyvinyl chloride, a conductive filler, a coupling agent, a filler, a stabilizer and other auxiliary agents; the composite material combines the advantages of a multilayer structural material and a gradient structural material, and has the performances superior to that of the two materials. Due to the impedance mismatch between a material absorption layer and a reflection layer, incident electromagnetic wave may generate multiple reflections, propagation paths of the electromagnetic wave in the material can be increased, and by the increase of multiple-reflection loss and absorption loss, the shielding effectiveness of the material become larger; the difference in impedance between the absorption layer and the reflection layer is reduced, so that the electromagnetic wave may not escape the shielding material too quickly due to reflection, and can enter a next shielding unit more, and the shielding effectiveness ofthe material can be further improved. Therefore, the composite shielding material of the structure has better shielding properties.

The invention discloses an impedance measuring component, an impedance measuring device and an impedance measuring method. The impedance measuring component comprises a pressing rod, a connecting shaft and a first probe, wherein the connecting shaft is connected with one end of the pressing rod; the first probe is fixed on the pressing rod; one end of the first probe is electrically connected with an electrode of an impedometer; when the pressing rod is pressed down, the other end of the first probe is electrically connected with a measuring point of an article to be measured. The impedance measuring device comprises the impedance measuring component. The impedance measuring device is adopted in the impedance measuring method. The difference of impedance of the article to be measured can be reduced, the measurement stability can be improved, and moreover the impedance measuring device is relatively rapid, convenient and flexible to measure, and is relatively wide in applicability.

The invention relates to a driving integrated circuit with A fan-out line compensation design, and the circuit comprises a plurality of driving lines, a signal input unit and a compensation unit. Thedriving lines are arranged along a first direction. Each driving circuit is provided with an input end and an output end. The signal input unit is electrically connected with the input end and provides a driving signal. The plurality of connection pads are arranged corresponding to the driving circuit, and each connection pad is electrically connected with the output end. The compensation unit isarranged on the driving circuit. The driving signal is transmitted to the connecting pad through the compensation unit. The drive circuit has a time constant distribution in a first direction that varies in a first curve. The compensation unit has a second curve change based on the first curve, and the second curve and the first curve have opposite trend changes.