604results about How to "Improve display uniformity" patented technology

In an active-matrix display device and a method for driving the active-matrix display device, a fifth transistor is connected between a power line and a drain terminal of a first transistor so that a power-supply voltage, namely the fixed voltage required for the compensation of the threshold voltage, is supplied by the power line via a fifth transistor and not by a signal line. Thus, a sufficient length of time for the threshold voltage compensation period can be maintained, and a second transistor of each pixel can accurately be compensated for threshold voltage irregularities.

The invention discloses a display panel and a display device. A display area comprises a first display region and a second display region. Each of the first display region and the second display region comprises a plurality of pixels in array distribution. The number of at least one line of pixels of the first display region is smaller than the number of any line of pixels of the second display region. The display panel comprises a grid drive circuit, a plurality of scanning signal lines and resistance compensation units. At least one scanning signal line provides scanning signals to one lineof the pixels. The resistance compensation units, namely metal or metal oxide wires, are connected with the scanning signal lines of the first display region. Through connection between the scanning signal lines of the first display region and the resistance compensation units, load of the scanning signal lines connected with the resistance compensation units can be increased, so that load differences among the scanning signal lines of the first display region and load differences among the scanning signal lines of the second display region are reduced, display uniformity of the display panelis improved, and display effect is enhanced.

The invention discloses a display panel and a display device. The display panel comprises a display area and a non-display area adjacent to the display area, the display area comprises a first displayarea and a second display area, and the pixel quantities of all pixel lines of the first display area are all smaller than those of any pixel line of the second display area; scanning signal lines and fixed potential lines of the display area are in different layers, and an laminated area is in the direction perpendicular to the display panel, wherein the area of any laminated area in the first display area is larger than that of any laminated area in the second display area. By increasing the areas of the laminated areas among all scanning signal lines and the fixed potential signal lines inthe first display area less in pixel quantity, the load capacitance of all the scanning signal lines in the first display area is increased, therefore the load difference among all the scanning signal lines in the first display area and scanning signal lines in the second display areas is compensated, accordingly the display homogeneity of the display panel is improved, and the display effect isimproved.

A liquid crystal panel having improved contrast ratio in an oblique direction and good display evenness without causing shift or unevenness in retardation values due to shrinkage stress of a polarizer or heat of backlight is provided. A liquid crystal panel according to an embodiment of the present invention includes: a liquid crystal cell; a polarizer arranged on both sides of the liquid crystal cell; a first optical element arranged between one polarizer and the liquid crystal cell; and a second optical element arranged between the other polarizer and the liquid crystal cell, wherein: the first optical element comprises a retardation film containing a norbornene-based resin and satisfying the following expressions (1) and (2); and the second optical element has substantially optical isotropy:

240nm≦Re[590]≦350nm  (1)

0.20≦Rth[590]/Re[590]≦0.80  (2).

An embodiment of the invention provides a pixel circuit and a driving method thereof, a display substrate and a driving method thereof, and a display apparatus and relates to the display technology field. In the embodiment of the invention, short-term residual image problem can be improved. The pixel circuit comprises a driving reset module, a writing-in compensation module, a luminescence reset module and a luminescence enablement module, wherein the driving reset module inputs a voltage of a first initial voltage terminal to a grid electrode of a driving transistor in a driving module under control of a first reset signal terminal; the writing-in compensation module is used for inputting a reference voltage output by a data voltage terminal in a shadow elimination phase to the driving module under control of a scanning signal terminal so that the driving transistor is in a conduction state; in a writing-in compensation phase, the data voltage is input to the driving module and the driving module is compensated; the luminescence reset module is used for inputting the voltage of the first initial voltage terminal to a luminescent device so as to carry out reset under the control of the scanning signal terminal; and the luminescence enablement module is used for providing a voltage of a first power supply voltage terminal for the driving module under the control of an enablement signal terminal and making the driving module be connected to the luminescent device.

The invention discloses a display panel and a display device. A threshold compensation circuit comprises a first threshold compensation transistor, a second threshold compensation transistor and a shielding capacitor. Wherein a first threshold compensation transistor and a second threshold compensation transistor are arranged; the length L of the channel region of the transistor can be increased equivalently, and the current I of the transistor is inversely proportional to the length L of the channel region, so that when the length L of the channel region is increased, the current I of the transistor can be reduced, and the quantity of charges flowing into the node N1 from the node N4 can be reduced. Moreover, by arranging the shielding capacitor, the charge of the node N4 can be stored inthe shielding capacitor by utilizing the charge storage effect of the shielding capacitor. Therefore, during signal switching on the scanning signal line, charges of the node N4 can be prevented frombeing injected into the node N1, so that the voltage of the grid electrode of the driving transistor can be kept stable, and the display uniformity of the display panel is improved.

The invention discloses a display panel and a display device. The display panel comprises a display area and a non-display area. The display area comprises at least two sub-display areas in the firstdirection of the display panel. The display panel also comprises multiple power voltage signal lines extending along the first direction and signal wiring lines which are arranged in different layersfrom the power voltage signal lines. Each signal wiring line is electrically connected with each power voltage signal line in each sub-display area. The linewidth of the signal wiring lines is greaterthan that of the power voltage signal lines. According to the display panel, the power voltage is inputted to the power voltage signal lines through the area division mode so that the voltage drop onthe power voltage signal lines can be reduced. Besides, the linewidth of the signal wiring lines is greater than that of the power voltage signal lines so that the voltage drop on the power voltage signal lines can be further reduced and the display homogeneity of the display panel can be enhanced.

The invention discloses an organic light-emitting display panel and a display device. The display area of the display panel is divided into a first display area and a second display area. The number of pixels in each column of pixels in the first display area is smaller than the number of pixels in each column of pixels in the second display area. Storage capacitors, in one-to-one correspondence with the pixels and connected with power supply voltage signal lines, are arranged in the display area. Compensation capacitors, in one-to-one correspondence with the pixels and connected with the power supply voltage signal lines, are arranged in at least one part of the region of the first display area. The sum of the capacitance values of one storage capacitor and one compensation capacitor corresponding to any pixel in the at least one part of the region of the first display area is larger than the capacitance value of one storage capacitor corresponding to any pixel in the second display area. Through setting compensation capacitors in one-to-one correspondence with the pixels in at least one part of the region of the first display area, the display uniformity of the display panel is improved.

The invention discloses a colorful film substrate, a manufacture method thereof and a liquid crystal display panel, relating to the field of liquid crystal displays and invented for improving the display uniformity of liquid crystal display panels. The liquid crystal display panel comprises the colorful film substrate and an array substrate which is in cassette-to-cassette arrangement with the colorful film substrate; liquid crystal is dropped between the colorful film substrate and the array substrate, wherein the colorful film substrate is provided with main column-shaped spacers and auxiliary column-shaped spacers at intervals, the main column-shaped spacers are higher than the auxiliary column-shaped spacers, and the main column-shaped spacers are connected with the auxiliary column-shaped spacers at bottoms. The manufacture method of the colorful film substrate comprises the following steps of: providing a glass substrate; and forming the main column-shaped spacers and the auxiliary column-shaped spacers connected at bottoms while forming a block array on the glass substrate. The colorful film substrate can be used for manufacturing liquid crystal displays.

A pixel providing voltage compensation and comprising a compensation device, a first switch element, a driving transistor, and a display element. The compensation device generates a compensation voltage during a first period. The first switch element transfers a data signal during a second period following the first period. The driving transistor operates in a reverse-bias mode during the first period. The driving transistor operates in a forward-bias mode during the second period to generate a driving current according to the compensation voltage and the data signal. The display element emits light according to the driving current.

The embodiment of the invention discloses a pixel driving circuit and a driving method thereof, a display panel and a display device. The pixel driving circuit comprises an initialization unit, a datawriting unit, a threshold compensation unit, a light emitting control unit, a voltage stabilizing unit, a storage capacitor, a driving transistor and a light emitting element; the initialization unitis electrically connected between the initialization signal end and the first node; the data writing unit is electrically connected between the data signal end and the first electrode of the drivingtransistor; the grid electrode of the driving transistor and the first end of the storage capacitor are electrically connected to a second node; the second end of the storage capacitor is electricallyconnected with the power signal end; the threshold compensation unit is electrically connected between the second electrode of the driving transistor and the second node; the voltage stabilizing unitis electrically connected between the first node and the second node; the light-emitting control unit is electrically connected between the power supply signal end and the light-emitting element. According to the technical method provided by the embodiment of the invention, the problem of non-uniform display caused by electric leakage can be solved, so that the display effect is improved.

Disclosed is a method of forming a metal pattern, the method comprising depositing a dielectric substrate on a supporting substrate; forming a latent mask pattern of a metal pattern on the dielectric substrate; etching the dielectric substrate exposed by the latent mask pattern; forming a seed layer on the supporting substrate by activating the supporting substrate; removing the latent mask pattern and the portion of the seed layer disposed on the latent mask pattern through a lift-off process; and plating a metal layer on the patterned seed layer.

The invention discloses a display panel and a display device. Display areas of the display panel comprise a first area and a second area, wherein the quantity of pixel units in each row in the first area is smaller than the quantity of pixel units in each row in the second area; a scanning line in electrical connection with a first shifting register is positioned in the first area, and a scanningline in electrical connection with a second shifting register is positioned in the second area; the first shifting register and the second shifting register are electrically connected with a first clock signal line; the first shifting register is electrically connected with the first clock signal line by using a resistance compensation unit; or the first shifting register is electrically connectedwith a second clock signal line; the second shifting register is electrically connected with a third clock signal line; an effective signal duty ratio of the second clock signal line is greater thanan effective signal duty ratio of the third clock signal line. According to the technical scheme in the invention, delay time of enabling the first shifting register to output a scanning drive signalto the scanning line positioned in the first area is prolonged, and display uniformity of the display panel is improved.

The present disclosure provides a flexible display panel and a method for manufacturing same. The present disclosure not only ensures improvement of bending characteristics of display panels but also ensures high pixels per inch (PPI) of the display panels. Moreover, IR-drop is lowered and display uniformity of the panels is increased.

The invention discloses a display panel and a display device. The display panel comprises a display area, the display area comprises a light sensation display area and a first display area which are arranged in the first direction, the display area comprises display sub-pixels, the light sensation display area further comprises virtual sub-pixels, and the total density of the display sub-pixels and the virtual sub-pixels in the light sensation display area is smaller than the density of the display sub-pixels in the first display area. The display panel further comprises a plurality of first signal lines which extend in the second direction and are arrayed in the first direction. The first signal lines comprise first sub-signal lines penetrating the light sensation display area and secondsub-signal lines penetrating the first display area, and the total number of the display sub-pixels and the virtual sub-pixels connected with the first sub-signal lines is equal to the number of the display sub-pixels connected with the second signal lines. The arrangement of the virtual sub-pixels can effectively compensate the load on the first sub-signal lines in the light sensation display area, so that the load difference of the first sub-signal lines and the second sub-signal lines due to the pixel density difference is reduced or even eliminated, the consistency of the load areas on thefirst sub-signal lines and the second sub-signal lines is ensured, and the display uniformity is effectively improved.

The embodiment of the invention provides a substrate, a display panel, a display device and a driving method of the display device and relates to the technical field of display. The display uniformity can be improved, and therefore product quality is improved. The substrate comprises an underlayer, multiple transparent electrodes arranged on the underlayer and wires electrically connected with the transparent electrodes. One end of each wire is located in a first non-display region and electrically connected with the output end of an IC. The transparent electrodes are used as common electrodes during display and as touch electrodes during touch. The other end of each wire stretches to a second non-display region opposite to the first non-display region. A first switching structure arranged in the second non-display region is further included. The first switching structure is electrically connected with the other ends of the wires and used for being switched on when the transparent electrodes are used as the common electrodes, and the transparent electrodes receive common voltage signals from the two ends of the wires at the same time. The substrate is used for manufacturing of the display panel and the display device.

The invention, which belongs to the technical field of display, relates to a pixel compensation method, device and system. The method comprises: carrying out pixel value sampling on at least one frameof to-be-displayed image of a display screen to obtain target sampling data; sending reporting data that include the target sampling data and are used for determining aging time of the display screenbased on the target sampling data and then determining pixel compensation data based on the aging time to a compensation device; and after receiving of the pixel compensation data sent by the compensation device, carrying out pixel compensation on a target frame of to-be-displayed image of the display screen based on the pixel compensation data. Therefore, compensation for the aging of the display screen is realized; and the pixel compensation method, device and system are used for aging compensation of the display screen.