84results about How to "Avoid uneven display brightness" patented technology

The invention discloses a pixel circuit, a driving method and a display device of a light emitting device, avoiding the attenuation of an OLED (organic light emitting diode). In the circuit, a source of a switch transistor is connected with a line data wire; a grid is connected with a row scanning line; a drain is connected with a first end of a first storage capacitor; a second end of the first storage capacitor is connected with a first end of a power supply wire; a source of a driving transistor is connected with the first end of the power supply wire; the grid is connected wit the first end of the first storage capacitor; the drain is connected with the first end of the OLED; a source of a first compensating transistor is connected with the first end of the first storage capacitor; a grid of the first compensating transistor is connected with a light emitting control wire; a drain of the first compensating transistor is connected with a source of the second compensating transistor and the first end of the OLED; a grid of the second compensating transistor is connected with the row scanning line; and a drain of the second compensating transistor is connected with second end of the OLED and the second end of the power supply wire. The display device comprises a pixel circuit of the light emitting device.

The invention provides a pixel circuit and a driving method therefor, an array substrate, a display panel and a display device. In the pixel circuit, the second pole of a first switch transistor, the first pole of a second switch transistor, the first pole of a driver transistor and the first pole of a fifth switch transistor are connected with a first node. The second pole of the second switch transistor, the grid electrode of the driver transistor and the first end of a capacitor are connected with a second node. The first pole of a third switch transistor, the second pole of a fourth switch transistor and the second end of the capacitor are connected with a third node. The second pole of the fifth switching transistor is connected with an electroluminescent part. According to the technical scheme of the pixel circuit, the working current flowing through the electroluminescent part is free from being influenced by the threshold voltage of the driver transistor. Therefore, the problem of the non-uniform display brightness due to the drift of the threshold voltage of the driver transistor can be completely solved.

The invention, which relates to the technical field of displaying, provides a specially-shaped display panel, a liquid crystal display apparatus and an organic electroluminescent display device so that a problem of non-uniform display brightness of different display areas in a display panel can be solved. A first data line is arranged in a normal display area of a specially-shaped display panel and a second data line is arranged in a specially-shaped display area, wherein the first data line is longer than the second data line and the impedance of the first data line is greater than the impedance of the second data line. A pin binding structure including a first binding part and a second binding part is arranged in a non-display area; the first binding part with the impedance being a firstbinding impedance is used for connecting a pin terminal of a chip with the first data line electrically; and the second binding part with the impedance being a second binding impedance is used for connecting the pin terminal of the chip with the second data line electrically. The first binding impedance is lower than the second binding impedance; and the difference between the first binding impedance and the second binding impedance compensates the difference of the impedances of the first data line and the second data line. The specially-shaped display panel, the liquid crystal and the organic electroluminescent display device are used for realizing uniform display brightness of the picture.

The invention provides a pixel circuit, a driving method thereof and a display device. The pixel circuit comprises a driving module, an energy storage module, an electroluminescent module, a data voltage writing module, a threshold value compensation module, a working voltage input end, a data voltage input end, a compensating voltage input end and a plurality of control signal input ends, wherein the threshold value compensation module is connected with the compensating voltage input end, the first end of the energy storage module and at least one control signal input end and is suitable for compensating the voltage of the first end of the energy storage module into the sum of a starting threshold value of the driving module and compensating voltage accessed by the compensating voltage input end by responding to a control signal accessed by the connected control signal input end. According to the pixel circuit, driving current which flows through the electroluminescent unit can be free of being influenced by the starting threshold value of the corresponding driving module, so that the problem of non-uniform display brightness caused by the shift of the starting threshold value of the driving module can be thoroughly solved.

The invention relates to the technical field of display, in particular to a pixel circuit, a pixel circuit driving method and a thin film transistor backplane. The pixel circuit comprises a driving transistor, a signal loading module, a light emitting control module and a storage capacitor. The pixel circuit provided by the invention has the advantages that in the light emitting diode driving process, the ghosting phenomenon caused by threshold voltage drift and the heterogeneity caused by the self threshold voltage of the driving transistor are effectively eliminated; the problem of brightness nonuniformity caused by different threshold voltages of the driving transistor among organic light emitting diodes of different pixel units in an active matrix organic light emitting diode display device is avoided; the driving effect of the pixel circuit on organic light emitting diodes is improved, and the display quality of the active matrix organic light emitting diode display device is further improved.

The invention provides a pixel circuit and a driving method thereof, a display panel and a display device. The pixel circuit comprises eight transistors, two storage capacitors and an organic light emitting device (OLED), a threshold voltage of the first transistor is compensated through mutual cooperation of the transistors and the capacitors, a driving current for driving the OLED to emit lightis made to be independent of the threshold voltage of the first transistor, so influence of fluctuation of the threshold voltage of the first transistor on the OLED is avoided, a problem of uneven display brightness caused by this is solved, the display effect of the whole frame is improved, moreover, since the leakage current between the first storage capacitor and the second storage capacitor can be reduced by the eighth transistor, reduction of a gate voltage of the first transistor is avoided, a problem of scintillation caused by the leakage current is solved, and the display effect of thewhole display frame is further improved.

The invention relates to a pixel driving circuit, a display device and a pixel driving method. The pixel driving circuit comprises a reset unit, and due to the rest unit, a storage capacitor not only stores data voltage in a charging stage, but also stores a threshold voltage of a driving unit so as to compensate the driving unit in a driving stage. The working current of the driving unit is no longer affected by the threshold voltage so as to eliminate the influence of the threshold voltage of the driving unit on the working current, so that the problem that the display brightness of a light emitting element is not uniform as the threshold voltage is inconsistent is solved, thereby improving the display quality of the display device. In addition, by moving the reset unit out of an effective display region, a row of pixel driving circuits share the reset unit, so that the aperture ratio of pixels can be greatly improved, the current density of an organic light emitting layer can be reduced and the service life of a display panel is prolonged.

The invention provides a pixel circuit, a display panel and a display device. The pixel circuit comprises a pixel compensation module, a light-emitting module and a touch detection module. The provided pixel circuit integrates the pixel compensation module and the touch detection module, and the pixel compensation module and the touch detection module share a data voltage line and scanning signal lines. Therefore, the number of signal circuits can be reduced, and accordingly, the pixel pitch is narrowed substantially, the IC cost is reduced, and higher pixel density is obtained. Meanwhile, in the pixel circuit, working current flowing through an electroluminescence unit is free from the effect of threshold voltage of a corresponding drive transistor, and the problem that display brightness is not uniform due to threshold voltage shift of the drive transistor can be solved.

The invention provides a pixel circuit. The pixel circuit comprises two sub-pixel circuits and a sixth switch unit, wherein the first end of the sixth switch unit is connected to a working voltage line, and the control end is connected to a first scanning signal line; each sub-pixel circuit comprises five switch units, a driving unit, an energy storing unit and an electroluminescent unit; a first switch unit, a third switch unit and a fourth switch unit of the first sub-pixel circuit share the scanning signal line with a first switch unit, a third switch unit and a fourth switch unit of a second sub-pixel circuit. By adopting the pixel circuit, the problem of non-uniform display brightness due to drifting of threshold voltage for driving a transistor is solved completely. Meanwhile, driving of two pixels is finished by using one compensating circuit, and two adjacent pixels share a plurality of signal lines, thereby reducing the quantity of signal lines for the pixel circuit in the display device, lowering the cost of an integrated circuit, reducing pixel distances and increasing the pixel density.

The invention provides a touch display device. The touch display device comprises a display module, a flexible printed circuit board, a touch module and a colloid layer, wherein the display module contains a display surface, the flexible printed circuit board is connected with the edge of the display surface, the touch module contains a faying surface arranged opposite to the display surface, the faying surface and the display surface are fit, an interval is formed between the touch module and the flexible printed circuit board, and the colloid layer fills the interval to fix the flexible printed circuit board to the faying surface of a touch panel. The flexible printed circuit board is fixed to the touch module through the colloid layer, so that the touch display device eliminates the stress generated when the flexible printed circuit board is bent, and solves the problems that the display module deforms due to the stress and further display brightness is uneven. The invention further provides a manufacturing method of the touch display device.

The invention provides a pixel circuit and a driving method thereof and a display device. The pixel circuit includes a first switch unit, a second switch unit, a third switch unit, a fourth switch unit, a fifth switch unit, a driving unit, an energy storage unit and an electroluminescent unit, controls ends of the first switch unit and the fifth switch unit are connected to a second scanning signal line, and control ends of the second switch unit, the third switch unit and the fourth switch unit are connected to a first scanning signal line. The pixel circuit provided by the invention can completely solve the problem that due to threshold voltage drift of a driving transistor, display brightness is nonuniform. In the pixel circuit in the invention, only two switching signal input circuits are arranged, thereby not only saving energy consumption, but also reducing interference between the circuits.

The invention discloses a pixel circuit, a driving method thereof, and a display device, and belongs to the technical field of display. The pixel circuit includes a compensation sub-circuit, a regulation sub-circuit, and a detection sub-circuit. Since the compensation sub-circuit can output a first power signal to a first node, the adjustment sub-circuit can adjust the potential of a second node according to the potential of the first node. Therefore, a drive current outputted to a light-emitting unit can be enabled to be independent of a threshold voltage of a driving transistor, i.e., achieving the internal compensation of the threshold voltage of the drive transistor. Since the detection sub-circuit can output the potential of the second node to a detection signal line connected to an external compensation circuit, the external compensation circuit can adjust the data signal voltage according to the voltage of the light-emitting unit, i.e., achieving external compensation of the threshold voltage of the driving transistor. The problem that the difference of the driving currents flowing through the respective light-emitting units due to the threshold voltage of the driving transistor causes the non-uniform display brightness of a display device is solved.

The invention discloses a mother board behind a box, a liquid crystal display panel and a corresponding manufacturing method. Due to the fact that a first elastic part is additionally arranged on the contact position of a first mother board body and a first frame sealing adhesive and / or a second frame sealing adhesive, or / and a second elastic part is additionally arranged on the contact position of a second mother board body and the first frame sealing adhesive and / or the second frame sealing adhesive. When the mother board behind the box is cut, the additionally-arranged elastic parts have certain elasticity, the problems that generated deformation can not restore due to insufficient elasticity of the frame sealing adhesives, and the box thickness of a liquid crystal box is not uniform are avoided. Accordingly, the problem that the manufactured liquid crystal box is not uniform in display brightness is avoided, and display quality is improved. Besides, the elastic parts are added to corresponding areas of the frame sealing adhesives so that the use quantity of the frame sealing adhesives can be reduced and production cost also can be reduced.

The invention discloses a pixel circuit and a driving method thereof, a display substrate and a display device. The pixel circuit includes a compensation sub-circuit and a storage sub-circuit. The compensation sub-circuit can adjust the potential of a control node according to the potential of a first pole of a driving transistor and adjusts the potential of a second node according to the potential of a first node, and the storage sub-circuit can adjust the potential of the control node according to the potential of the second node. Therefore, when the pixel circuit is driven, the compensationsub-circuit can write the threshold voltage of the driving transistor, the voltage of a reference power source signal, the voltage of a data signal, and the potential of a second pole of the drivingtransistor to a gate of the driving transistor by controlling the potential of each control signal, rather than writes the voltage of a first power source signal to the gate of the driving transistor.Thereby, the magnitude of the driving current output by the driving transistor is independent of the voltage of the first power source signal. Therefore, the problem of uneven display brightness dueto the voltage drop at the first power source terminal is avoided.

The present invention provides a pixel circuit, a driving method thereof and a display device. The pixel circuit comprises a drive module, an energy storage module, an electroluminescent module, a data voltage writing module, a threshold compensation module and a reset module, and also comprises an operating voltage input terminal, a data voltage input terminal and a plurality of control signal input terminal. The threshold compensation module is capable of introducing the voltage on the compensation voltage input terminal so as to set the voltage on the control terminal of the drive module to be a sum of the threshold voltage of the drive module and the operating voltage, thus the driving current flowing through the electroluminescent units is not affected by the threshold voltage of corresponding drive modules, such that the problem of uneven display brightness caused by the threshold voltage drift of driving transistors can be solved.

An embodiment of the invention discloses a curved display panel and a curved display device. The curved display panel and the curved display device have the advantages that two data driving circuits of the curved display panel simultaneously drive the same data line, and two scanning driving circuits simultaneously drive the same scanning line, so that image signal distortion due to serious signal attenuation at the tail end of the data line can be prevented, and the problem of uneven display brightness of an existing scanning line due to insufficient charging can be solved; long sides of each sub-pixel are parallel to long frames of the curved display panel, short sides of each sub-pixel are parallel to short frames of the curved display panel, accordingly, the areas of black cluster regions on two sides of the curved display panel can be greatly reduced, color cast of a left region and a right region of the curved display panel can be relieved, and the problem of uneven pictures displayed by an existing curved display panel can be solved.

The invention discloses a pixel circuit, its driving method and a display device. In the pixel circuit provided by the embodiment of the invention, when a driver module provides driving voltage for a luminescent device, a sampling module samples the driving voltage; a processing module processes according to the driving voltage sampled by the sampling module and correspondence between pre-stored luminance of the luminescent device changing with the service time and the driving voltage so as to obtain compensation voltage corresponding to the driving voltage; a compensation module inputs the compensation voltage determined by the processing module into the corresponding luminescent device. Thus, the function of differently compensating the driving voltage of the luminescent device according to different service times of the luminescent device; the problem that display brightness of a display panel is not uniform because brightness of the luminescent device is reduced when the same driving voltage is adopted to drive the luminescent device with increasing of the service time of the luminescent device is solved; and display brightness uniformity of the display panel is raised.

The embodiment of the invention provides a display substrate, an electroluminescent display panel and an electroluminescent display device, which relate to the technical field of display and can be used to solve the problem of high temperature of the electroluminescent display panel. The display substrate includes a display area and a peripheral area. The display area includes a plurality of light-emitting areas and non-light-emitting areas. The display substrate includes a base, and a first electrode layer, a light-emitting functional layer and a second electrode layer arranged on the base inturn. The first electrode layer includes a plurality of first electrodes, of which each is located in one light-emitting area. The display substrate also includes a first thermal conductive layer arranged between the light-emitting functional layer and the second electrode layer and at least located in the light-emitting areas.

The invention provides a pixel circuit, a display panel and a display device. The pixel circuit comprises a pixel compensating module, a light-emitting module and a touch control detecting module. According to the pixel circuit, the pixel compensating module and the touch control detecting module are integrated, and the pixel compensating module and the touch control detecting module share a data voltage line and a scanning signal line. Thus, the number of signal lines is reduced, the distance between pixels is remarkably reduced, the IC cost is reduced, and the higher pixel density can be achieved. Meanwhile, work current, flowing through an electroluminescent unit, in the pixel circuit cannot be affected by threshold voltage of a corresponding driving transistor. Thus, the problem of uneven display brightness caused by threshold voltage drift of the driving transistor is solved.

The invention provides a display substrate as well as a drive method thereof and a display device. The display substrate comprises a touch area, wherein a plurality of rows of touch electrodes are arranged in the touch area; touch controller electrodes in each row of touch electrodes are connected with each other; on a touch detecting stage, each row of touch electrodes in the touch area is independent with one another; and on a display stage, each row of touch electrodes in the touch area is connected together as a public electrode. In this way, on the display stage, voltage difference between public voltage provided by the touch electrodes at one side far away from a drive circuit and the public voltage output by the drive circuit is greatly reduced, so that the public voltage provided by public electrodes is almost consistent, and an uneven display brightness problem can be avoided.

The invention provides a pixel circuit which comprises two sub-pixel circuits. Each sub-pixel circuit comprises five switch units, a driving unit, an energy storage unit and an electroluminescence unit, and the first switch unit, the second switch unit and the fifth switch unit of the first sub-pixel circuit and the first switch unit, the second switch unit and the fifth switch unit of the second sub-pixel circuit share a scanning signal line. In the pixel circuit, working currents flowing through devices of the electroluminescence units are not influenced by the threshold voltage of corresponding driving transistors, and the problem that uneven display luminance is caused by threshold voltage drifting of the driving transistors is thoroughly solved. In the pixel circuit, driving of two pixels is completed through one compensating circuit, two adjacent pixels share a plurality of signal lines, the number of the signal lines, used in the pixel circuit, in the display device can be decreased, the cost of integration circuits can be reduced, the pixel distance can be decreased, and the pixel density can be increased.

The present invention provides an OLED package structure and a package method thereof, and the structure comprises a package cover plate, a substrate, oppositely positioned with the package cover plate, an OLED element, positioned between the package cover plate and the substrate and set on the substrate, a metal oxide layer, formed on a surface of the OLED element, seal, positioned at periphery of the OLED element to bond the package cover plate and the substrate, dryer filler, filling an internal space surrounded by the seal between the package cover plate and the substrate, and covering the OLED element and frit glass, located at periphery of the seal to bond the package cover plate and the substrate, and the structure utilizes the seal and the frit glass to implement the package, and meanwhile, the dryer filler is filled inside the seal to make the package structure possess well tightness and mechanical strength, and a metal oxide layer is formed on a surface of the OLED element inside to prevent the issue of display uneven brightness caused by the corrosion of the dryer filler, particularly the liquid dryer to the lighting element.

The invention relates to the technical field of display equipment, and discloses a lamp panel, a backlight module and a display device. The lamp panel comprises a flexible circuit board which comprises a first side face and a second side face; a light source which is positioned on the first side surface of the flexible circuit board; a supporting plate which is located on the second side face of the flexible circuit board and comprises a plurality of supporting parts capable of being spliced in sequence, each supporting part is of a strip-shaped structure, and the side, close to the flexible circuit board, of each supporting part is connected with the second side face of the flexible circuit board; wherein the flexible circuit board can be bent in the arrangement direction of the pluralityof supporting parts; when the flexible circuit board is in a flattened state, the sides, away from the flexible circuit board, of the multiple supporting parts are flatly spliced. When the flexible circuit board is in a bent state, the sides, away from the flexible circuit board, of the multiple supporting parts are disconnected. According to the lamp panel, the bending stress can be reduced, good attachment between the lamp panel and the back plate is guaranteed, the light source light mixing distance is not changed, and then the problem that the display brightness of the curved display panel is uneven due to the bending stress problem is solved.

The invention provides a pixel circuit and a display device. The pixel circuit comprises two sub-pixel circuits. Each sub-pixel circuit comprises five switch units, a driving unit, an energy storage unit and an electroluminescence unit. The two sub-pixel circuits share the same data voltage wire and multiple scanning signal lines. According to the pixel circuit, working currents flowing through devices of the electroluminescence unit can be free of influence of a threshold voltage of a corresponding driving transistor, and therefore the problem of non-uniform display brightness caused by drift of the threshold voltage of the driving transistor is thoroughly solved. Meanwhile, a compensating circuit is adopted for driving two pixels, and the two adjacent pixels share multiple signal lines, so the number of the signal lines used for the pixel circuit in the display device can be reduced, the cost of an integrated circuit is lowered, the pixel distance is shortened, and the pixel density is increased.

An embodiment of the invention provides a pixel driving circuit, a driving method therefor and a display device; wherein the pixel driving circuit, the pixel driving method and the display device relate to the technical field of displaying. The pixel driving circuit, the driving method therefor and the display device can prevent a defect of display brightness non-uniformity of a display device caused by a threshold voltage. The pixel driving circuit comprises an input module, a compensation module, a driving module, a light emitting module and a control signal input module. The input module is controlled by a first gate signal end and is used for outputting the signal of a data voltage end to the compensation module. The compensation module is controlled by the input module and a threshold voltage control end and is used for compensating the threshold voltage of the driving module. The light emitting module is controlled by a first control signal end and is used for driving the light emitting module to emit light. The control signal input module is controlled by a second control signal end and a third control signal end and is used for outputting the signal of the second voltage end or the third voltage end to the first control signal end. The pixel driving circuit, the driving method therefor and the display device are used for driving a pixel unit to emit light.

The invention discloses a pixel driving circuit, a driving method thereof, and a display device, which relate to the technical field of display, and solves the problem of uneven brightness display ofthe display device due to non-uniformity of the driving circuit in the display device. The pixel driving circuit comprises: a driving circuit, a storage circuit, a data write-in circuit, a charging and discharging control circuit, and a compensation circuit, the charging and discharging control circuit is configured to control to conduct or disconnect the connection between a first level signal input end and a control end of the driving circuit under the control of a first scanning signal end and a second scanning signal end, and control to conduct or disconnect the connection between a secondend of the compensation circuit and the control end of the driving circuit; the compensation circuit is configured to control to conduct or disconnect the connection between the first end of the compensation circuit and the second end of the compensation circuit under the control of the control end of the driving circuit. The pixel drive circuit is used for driving a light-emitting component to display.

The invention provides a pixel driving circuit and a control method of the pixel driving circuit. In the present invention, in response to a light-emitting signal, by using a reference voltage provided by a first node, a series structure of a first capacitor and a second capacitor and a bootstrap effect of the second capacitor, transmission of the reference voltage and a data signal voltage is realized, so that the driving current is irrelevant to the threshold voltage of the first transistor and the positive voltage of the power supply; the problem of non-uniform display brightness in a traditional display device is solved, and the visual display quality of the display device is improved.

The invention provides a display device for controlling a display angle and a manufacturing method thereof. The display device comprises a pixel unit array composed of a plurality of pixel units, wherein each pixel unit comprises a sub-pixel unit array composed of sub-pixel units capable of emitting light with different colors; each sub-pixel unit comprises a sub-pixel layer for emitting light with pre-set color corresponding to the sub-pixel unit and a light refraction layer arranged above the sub-pixel layer and composed of a micro-nano structure array; and each micro-nano structure array in the light refraction layers has the equivalent refraction rate aiming at the light with the pre-set color, and the light with the pre-set color, which is emitted from the sub-pixel layers, is refracted b the light refraction layers. By virtue of the display device and the manufacturing method thereof, provided by the invention, the display angle can be changed, and the problems that the resolution ratio of the display device is reduced and the display brightness is not uniform can be effectively avoided.

The invention discloses a pixel circuit and a driving method thereof, a display substrate and a display device. Because the light-emitting control circuit can output a direct-current power supply signal provided by the direct-current power supply end to the second node and control the third node to be conducted with the light-emitting element, the compensation circuit can adjust the potential of the first node according to the potential of the second node or the third node. Therefore, when the pixel circuit is driven, the potential finally written into the first node is only related to the threshold voltage of the driving transistor, the potential of the data signal provided by the data signal end and the potential of the target node. Moreover, the driving signal output by the driving circuit is related to the potential difference between the first node and the target node, so that the driving signal output by the driving circuit is irrelevant to the potential of the target node, namely the potential of the direct-current power supply signal. Therefore, the problem that the display brightness of the display panel is not uniform due to reduction of transmission of the potential of the direct-current power supply end is avoided, and the display effect of the display panel is good.