56results about How to "Avoid image sticking" patented technology

The invention discloses a pixel circuit, a driving method of the pixel circuit, an organic light-emitting display panel and a display device. A unified public voltage signal is inputted to a first electrode of a drive transistor before a data signal is written into a control electrode of the drive transistor; the public voltage signal and a threshold voltage of the drive transistor are written into a control electrode of the drive transistor, so that relatively high current can pass through the drive transistor, threshold voltage deviation, which is caused by bias stress, of the drive transistor can be recovered, a retarding effect of the drive transistor can be improved and the occurrence of a ghosting phenomenon can be prevented; in addition, when the data signal is written into the control electrode of the drive transistor, a time of writing the data signal can be shortened, and the control electrode and the first electrode of the drive transistor can achieve jump through a unified potential, so that a difference, which is caused by stray capacitance between the control electrode and the first electrode of the drive transistor, can be prevented, the problem that threshold voltage grabbing is inconsistent due to voltage jump can be avoided and consistent brightness of the first frame after high-low grayscale switching can be guaranteed.

The present invention provides a liquid crystal display device whereby a good voltage holding ratio is maintained for a long time using an optical alignment film, and the occurrence of ghosting and spots in a display screen image is prevented. This liquid crystal display device is provided with: a liquid crystal layer containing liquid crystal molecules and an antioxidant; a sealing material obtained by curing a sealing resin containing a compound having at least one type of first connective functional group selected from the group consisting of an epoxy group, a methoxysilane group, and an ethoxysilane group; and an optical alignment film having at least one type of alignment film polymer having an ester group; the at least one type of alignment film polymer including an optical alignment film polymer having at least one type of photofunctional group selected from the group consisting of a cinnamate group, a carbonyl group, an azobenzene group, a coumarin group, a stilbene group, and a phenol ester group, and at least one type of second connective functional group selected from the group consisting of -COOH, -NH2, -NHR, -SH, and -OH being present on the surface of the optical alignment film.

Provided are an active matrix substrate including plural pixel electrodes in a pixel region and a liquid crystal display device (pixel division mode) using the same. Proposed is a configuration of the liquid crystal display device of the capacitor-coupled pixel division mode which hardly causes reduction in display quality due to image-sticking of sub-pixels. The active matrix substrate includes: a data signal line (15x); scanning signal lines (16a and 16b); a transistor (12a) connected to the data signal line (15x) and scanning signal line (16a); a transistor (12b) connected to the data signal line (15x) and scanning signal line (16b); and pixel electrodes (17a and 17b) provided in a pixel region (101), the pixel electrode (17a) being connected to the data signal line (15x) via the transistor (12a), the pixel electrode (17b) being connected to the pixel electrode (17a) via a capacitor and the data signal line (15x) via the transistor (12b), and the transistors (12a and (12b) have identical W / L ratios of channels (each ratio of width W to length L of channel). The present invention can be configured with identical channel sizes without adjusting W / L ratios of channels of the transistors unlike a conventional configuration. Accordingly, deterioration of display quality due to variation in characteristics of transistors can be suppressed.

The embodiment of the invention provides a display control method and a display control device of display columns, which relate to the technical field of display and are capable of avoiding the display columns to be in the same state for a long time. The display control method comprises: displaying a first display column in a display column display zone of a terminal device, wherein the background and the display information of the first display column are in a first color assortment state; switching the first display column displayed in the display column display zone into a second display column if the display time of the first display column reaches a first preset time, wherein the background and the display information of the second display column are in a second color assortment state, and the first color assortment state is different from the second color assortment state.

The invention discloses a pixel circuit, a driving method thereof, a display panel and a display device. A node reset module is used to provide a signal of a first voltage terminal to a gate of a driving transistor before a driving control module controls a driving transistor to drive a light-emitting device to emit light; At the same time, when the node reset module supplies the signal of the first voltage terminal to the gate of the driving transistor, the light emission control module supplies the signal of the first voltage terminal to the first electrode of the driving transistor. That is, before the light-emitting device emits light, the signal of the first voltage terminal is used to reset the gate and the first electrode of the driving transistor at the same time, so as to avoid the difference caused by the parasitic capacitance of the two, and thus avoid the problem of inconsistent threshold value capture caused by voltage jumps , which can ensure that the brightness of the first frame is consistent after switching between high and low gray levels. In addition, the drive transistor is completely reset in the initialization phase of each frame, which can also prevent the image sticking phenomenon caused by the shift of the threshold voltage of the drive transistor.