145results about How to "Improve display unevenness" patented technology

The invention discloses a peripheral compensation system of a pixel matrix, a method thereof and a display system. The peripheral compensation system comprises a grid scan driving module 200, a column data driving module 300 and a compensation module 400. The compensation module 400 is respectively connected with M columns of pixel units 101 via M columns of feedback signal lines and is used for detecting the variation of the electrical characteristics of a pixel matrix 100 so as to send a second display signal to the pixel matrix 100 and compensate each of the pixel units 101. According to the technical scheme of the invention, the addition of first display signals and second display signals in the pixel units is realized, so that accurate gamma correction of first display signals is realized at the same time. Meanwhile, the structure is simple. A first digital-to-analog conversion module and a second digital-to-analog conversion module are also low in the number of bits. On the condition that the addition mode of analog domains is conducted, an original high-voltage analog adder can be converted to a medium-voltage adder or a low-voltage adder.

The invention discloses a pixel circuit, a display device and a dual gate driving transistor. The pixel circuit comprises a threshold voltage compensation unit, a mobility compensation unit and a light emitting control unit. The threshold voltage compensation unit is electrically connected to a data terminal and a first control terminal of an external control unit and a first gate and a source ofthe dual gate driving transistor respectively. The mobility compensation unit is electrically connected to a detection signal terminal and a second control terminal of the external control unit and the source of the dual gate driving transistor respectively. The light emitting control unit is electrically connected to the data terminal and a third control terminal of the external control unit, a second gate and the source of the dual gate driving transistor, and a light emitting device respectively. The external control unit controls the threshold voltage compensation unit and the mobility compensation unit to perform threshold voltage compensation on the dual gate driving transistor, and controls the mobility compensation unit and the light emitting control unit to perform mobility compensation on the dual gate drive transistor and control light emission of the light emitting device. As a result, the threshold voltage compensation and mobility compensation for the driving transistor at the same time can be achieved.

The invention provides a pixel compensating circuit which comprises a first switch, a second switch, a third switch, a fourth switch, a fifth switch and an organic light-emitting diode, wherein a first end of the first switch is connected to a data signal; a control end of the first switch is connected to a scanning signal; a first end of the second switch is connected to reference voltage; a control end of the second switch is connected to a switching signal; a first end of the third switch is connected to first voltage; a control end of the third switch is connected to a first control signal; a first end of the fourth switch is connected to a second end of the third switch; a first end of the fifth switch is connected to a second end of the fourth switch; a control end of the fifth switch is connected to a second control signal; an anode of the organic light-emitting diode is connected to a second end of the fifth switch; and a cathode of the organic light-emitting diode is connected to second voltage. The pixel compensating circuit adopts the independent switching signal to complete write-in of the reference voltage and realizes data write-in by the complete scanning signal during a low level period, so that data pulses have adequate pulse widths to realize driving at a high frame speed, and the problem that the panel display is nonuniform is solved.

The invention provides a making method of an OLED panel and an OLED panel, wherein the making method of the OLED panel is characterized by making an anode connected with a source cathode of a TFT anda lapping electrode connected with an auxiliary electrode on a TFT substrate; making a plurality of metal salients with cusps on the surfaces in the lapping electrode; after successively forming an electrical transmission layer, an electrical injection layer and a cathode with whole surfaces in the subsequent making process, the positions of the electrical transmission layer and the electrical injection layer corresponding to the cusps of the metal salients are provided with slim film thicknesses; after further applying voltage to the auxiliary electrode and the lapping electrode, the positions of the electrical transmission layer and the electrical injection layer corresponding to the cusps of the metal salients are burnt by the cusps of the metal salients because of big impedance; thereby the cathode is connected with the auxiliary electrode, signals are input by the OLED panel to the cathode via the auxiliary electrode when displaying, and the problem is effectively improved that the OLED panel displays unevenly because of an IR pressure drop of the cathode.

Embodiments of the invention provide an array substrate, a display panel and a display device. The array substrate comprises display areas, non-display areas and an optical component arrangement area;the non-display areas include a first non-display area and a second non-display area; the display areas include a first display area and a second display area; the first non-display area surrounds the optical component arrangement area; the display area surrounds the first non-display area; the second non-display area surrounds the display area; and the second display area is located between thefirst non-display area and the second non-display area, and communicates with the first non-display area and the second non-display area. The pixel density of the second display area is set to be smaller than the pixel density of the first display area, so that the size of the first non-display area is reduced, the area of the effective display area is increased, the phenomenon of uneven display is improved, and the display effect is improved.

The invention provides a display panel as well as a test method and an application method thereof. The display panel comprises a substrate, a first touch electrode group, a second touch electrode group and a driving module, wherein the substrate comprises a display area and a non-display area; the first touch electrode group comprises a plurality of first touch electrodes in the display area of the substrate; each first touch electrode is electrically connected with a first input end through a touch signal output wire and a first switch device; the second touch electrode group comprises a plurality of touch electrodes in the display area of the substrate; each second touch electrode is electrically connected with a second input end through a touch signal output wire and a first switch device; the first touch electrodes and the second touch electrodes form a touch electrode array; the driving module is electrically connected with a control end and the second input end of each first switch device, respectively; and the driving module is at least electrically connected with the first input end through a second switch device. According to the display panel as well as the test method and the application method thereof, the non-uniform display caused by non-uniform voltage of public electrodes can be improved, and the driving ability of the public electrodes can be strengthened.

The invention describes a pixel circuit and a drive method thereof. The pixel circuit comprises initialization modules, a data write-in module, a storage module, a threshold compensation module, a drive module, a light-emitting module and at least two initialization signal lines; and, in the at least two initialization signal lines, the first initialization signal line is connected with the corresponding initialization module and used to input a signal on the first initialization signal line to the storage module, and the second initialization signal line is connected with the corresponding initialization module and used to input a signal on the second initialization signal line to the drive module and the light-emitting module. A drive tube threshold voltage can be compensated, and display problems such as a display abnormity caused by a threshold drift and crosstalk generated by wiring parasitic capacitance are prevented.

This invention discloses an active element array base board, which scanning line and data line are configured on the display region of the base board and divide it into multiple pixel regions, the switch elements are configured on the pixel regions and connected with the scanning lines and the data lines electrically, pixel electrodes are set on the pixel regions and connected with related switch elements electrically, routings are configured on a non-display region of the base board, each of the routings includes a first and second conductor layers, in which, the second one is set on the first one and parallel to the first one, which is on a same membrane layer with the scanning line, the data line or the pixel electrode and the second conductor layer is on a same membrane layer with the other of the scanning line, the data line or the pixel electrode so as to reduce the impedance difference among routings on the non-display region.

An embodiment of the invention discloses a pixel driving circuit, a driving method, a display panel and a display device. The pixel driving circuit comprises a data write-in module, a voltage stabilization storage module, a driving module and a light emitting element, wherein the data write-in module is used for transmitting a data signal voltage; the driving module is used for generating a driving current according to the data signal voltage transmitted by the data write-in module; the voltage stabilization storage module is used for storing the data signal voltage transmitted to the drivingmodule; the light-emitting element is used for emitting light corresponding to the driving current generated by the driving module; and the voltage stabilization storage module comprises at least twovoltage stabilization storage sub-modules which are connected in parallel, each voltage stabilization storage sub-module comprises a capacitor, at least one voltage stabilization storage sub-module comprises a switch unit, and each switch unit is connected between the corresponding capacitor and the driving module. According to the pixel driving circuit, the driving method, the display panel and the display device provided by the embodiment of the invention, the problem of non-uniform display caused by capacitor electric leakage can be improved, and the display effect is improved.

The invention discloses a pixel circuit, a driving method thereof, a display panel and a display device, wherein the pixel circuit comprises a driving transistor, a data write-in sub-circuit, an initializing sub-circuit, a voltage pre-write-in sub-circuit, a threshold compensating sub-circuit, a first light emitting control sub-circuit, a second light emitting control sub-circuit, a capacitor anda light emitting device. Because before light emitting of the light emitting device in the pixel circuit, the voltage pre-write-in sub-circuit pre-stores the voltage of the voltage end of a light emitting power supply into a capacitor, the magnitude of the actual light emitting current is related with the voltage of the voltage end of the light emitting power supply though the light emitting current is driven by a first voltage source, and the magnitude is irrelevant with voltage of the first voltage source. The pixel circuit, the driving method, the display panel and the display device have advantages of eliminating influence of voltage drop to displaying of the light emitting device in a light emitting period of the first voltage source, and improving non-uniform displaying of an OLED display screen.

The embodiment of the invention discloses a pixel circuit and a driving method thereof, a display panel and a display device. A data writing module of a pixel circuit can write data signals into a grid electrode of a driving transistor and a first pole plate of a storage capacitor in the data writing stage. A reset module can write a reset signal into a second polar plate of a storage capacitor ina data writing stage. A threshold value compensation module can write a threshold value compensation signal into a second polar plate of the storage capacitor in a threshold value compensation stage,so that the potential of a first polar plate of the storage capacitor is adjusted to a first potential, and threshold value compensation is carried out on the driven transistor; wherein the thresholdcompensation signal is greater than the reset signal; the driving transistor can provide driving current for the organic light-emitting element in a light-emitting stage so as to drive the organic light-emitting element to emit light. The pixel circuit provided by the embodiment of the invention is simple in structure and relatively small in size, and threshold compensation can be realized.

The present invention discloses a display panel and a display device. Each pixel circuit in a display panel comprises a driving module, an organic luminescence structure, data write-in module, a storage module and at least one control module, wherein the data write-in module writes data signals in the control end of the driving module; the storage module is electrically connected with the control end of the driving module to maintain the voltage of the driving module at the control end of a luminescence phase; the control module is electrically connected with the control end of the driving module, signals are written into the control end of the driving module prior to the luminescence phase; and the continuous grid structure of a control transistor in the control module comprises at least one hollow structure, the vertical projection of the hollow structure on the substrate covers part of vertical projection of the continuous grid structure on the substrate, and the projection area of the hollow area on the substrate is larger than the projection area of the continuous grid structure corresponding to the hollow structure on the substrate. The problem is improved that the display of the display device is not uniform.

The present invention provides a pixel circuit, an active matrix organic light-emitting diode display and a drive method, wherein the pixel circuit includes an organic light-emitting diode, a storagecapacitance, a drive transistor and first to fourth switch transistors. The drive transistor is used to generate a pixel current based on a quantity of electric charge stored in the storage capacitance so as to drive the organic light-emitting diode to generate a corresponding brightness; turn-on/off states of the first to fourth switch transistors are controlled by an identical scanning signal, by means of electrical coupling relations of the first to fourth switch transistors, the pixel current and power supply voltage across the organic light-emitting diode are independent of a critical voltage of the drive transistor and an increase of straddling voltage of the organic light-emitting diode is improved along with an operation of the organic light-emitting diode for a long time. The invention also provides the active matrix organic light-emitting diode display employing the pixel circuit and the drive method for the pixel circuit.

The embodiment of the invention provides a gate driving circuit and a driving method thereof as well as a display device, relates to the technical field of displaying and can solve the problems of signal receiving strength reduction and signal delay of pixel units farther from shift registers. The gate driving circuit is used for driving at least two adjacent gate lines, namely a first gate line and a second gate line on a display panel; the gate driving circuit at least comprises a first shift register unit, a second shift register unit and a precharge unit; the precharge unit is connected with the first gate line, the second gate line, a first clock signal terminal and a second clock signal terminal, and used for outputting signals of the first clock signal terminal to the second gate line under the control of the second clock signal terminal and the first gate line; the rising edge of output signals of the second clock signal terminal is positioned between the rising edge and the failing edge of the output signals of the first clock signal terminal or the falling edge of the second clock signal terminal is positioned between the rising edge and the falling edge of the output signals of the first clock signal terminal.

A pixel circuit and a display device using the same are provided. The pixel circuit comprises first to fourth transistors, first and second capacitors and a light emitting assembly. The gate electrode of the first transistor receives a scanning signal; one source/drain electrode of the first transistor receives display data; another source/drain electrode is electrically coupled to the gate electrode of the third transistor and is electrically coupled to one source/drain electrode of the second transistor. The gate electrode and one source/drain electrode of the second transistor receive a reset signal via the second capacitor, and another source/drain electrode receives a switch signal. The gate electrode of the fourth transistor receives an enabling signal; one source/drain electrode is electrically coupled to a first power supply voltage; another source/drain electrode is electrically coupled to the anode of the light emitting assembly through the third transistor. The cathode of the light emitting assembly is electrically coupled to a second power supply voltage which is smaller than the first power supply voltage. The circuit can effectively improve the problems of nonuniform display and material decay of the light emitting assembly so as to provide high-quality display images.

The invention discloses a display substrate and a display device. The display substrate comprises a substrate; a plurality of pixel circuits on the substrate, wherein each pixel circuit comprises a drive module and an organic light-emitting structure, and the drive module comprises n series drive transistors. The grid electrodes of the n series drive transistors are electrically connected, and the drive modules are used for providing drive currents for the organic light-emitting structures through the n series drive transistors. The organic light-emitting structures are used for responding to the drive currents to emit light. The display substrate also comprises a data writing-in module which is used for writing a data signal into the grid electrodes of the n series drive transistors; and a storage module which is electrically connected with the grid electrodes of the n series drive transistors, and is used for maintaining the grid voltage of the n series drive transistors at a light-emitting stage, wherein n is an integer greater than one. According to the technical scheme of the invention, the display substrate reduces the amplitude of a voltage across the source and drain electrodes of each transistor, and solves a problem of display non-uniformity of a display device.

The invention discloses a display panel and a display device. The display panel comprises a substrate, a plurality of first signal lines, a plurality of second signal lines, a plurality of first connecting line units and a plurality of second connecting line units,, wherein the substrate comprises at least one light transmission region, a main display region and a first transition display region;each first signal line comprises at least two first signal line segments which are separated by the light transmission region in the first direction; each second signal line comprises at least two second signal line segments which are separated by the light transmission region and the first transition display region in the first direction, the signal type of a signal provided by the second signalline is the same as the signal type of a signal provided by the first signal line; each first connecting line unit electrically connects the at least two first signal line segments corresponding to one first signal line; and each second connecting line unit electrically connects the at least two second signal line segments corresponding to one second signal line. According to the display panel provided by the embodiment of the invention, the display area ratio of the display panel can be improved.

The present application provides an electroluminescent display panel, a display device, and a method of manufacturing the display panel for improving a case where brightness of two display regions inthe display panel is uneven. The electroluminescent display panel is divided into a first display area and a second display area, the first display area includes a first light emitting unit, the second display area includes a second light emitting unit, the pixel density of the first light emitting unit is lower than the pixel density of the second light emitting unit, The thickness and/or material of the at least one functional film layer in the first light emitting unit is different from the thickness and/or material of the same functional film layer in the second light emitting unit so thatthe light emitting efficiency of the first light emitting unit is greater than the light emitting efficiency of the second light emitting unit.

A pixel circuit comprises five transistors, two capacitors and an organic light-emitting diode. First terminals of the first transistor and the third transistor are electrically coupled to a first power voltage. A first terminal of the second transistor is electrically coupled to a second terminal of the first transistor and a first terminal of the fourth transistor; a second terminal of the second transistor is electrically coupled to a second terminal of the fifth transistor and a first terminal of the first capacitor and is coupled to a second power voltage electrically through the organic light-emitting diode; a control terminal of the second transistor is electrically coupled to a second terminal of the fourth transistor and a first terminal of the second capacitor; and a second terminal of the third transistor is electrically coupled to second terminals of the first and second capacitors.

The invention discloses an irregular display panel and a display device. The display panel comprises multiple first fixed potential lines and multiple data lines with incompletely same lengths; a display region is divided into multiple display sub-regions along extension directions of the first fixed potential lines, and at least one data line is arranged in each display sub-region; since the lengths of the data lines in different display sub-regions are incompletely same, the different data line lengths means that the pixel amount connected by the data lines is different, and the data line loads are different; therefore, for compensating the load distance between the data lines, and aiming at different display sub-regions, the shorter the data line in the display sub-region is, the greater of the total overlapping area of the data line in the display sub-region and multiple first fixed potential lines is; the capacitance between each data line and the first fixed potential lines is increased, so that the load of the data with less connected pixel amount is increased, the problem that the display of the display panel is non-uniform is improved, and the display effect is promoted.

The invention provides a display panel and a display device, the display panel comprises a display area and a non-display area, the display area is internally provided with a plurality of sub-pixels and a plurality of data lines which are arranged in an array, and the non-display area is internally provided with a plurality of output channels, a panel electrical detection unit, a crack detection wire and a detection control circuit; the panel electrical detection unit is connected with the detection control circuit, the input end of the crack detection wire is connected with the output end ofthe detection control circuit, and the output end of the crack detection wire and the other output end of the detection control circuit are output to the input end of at least one output channel, thedetection control circuit is used for outputting a detection signal to the crack detection line or the output channel according to the detection control signal, and the detection signal can be outputto the output channel through the detection control circuit without passing through the crack detection line, so that the voltage drop of the detection signal in the transmission process is reduced, the problem of non-uniform display is improved, and the accuracy of panel electrical detection is improved.