Chengdu BOE Optoelectronics Technology Patente

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A display substrate and a manufacturing method therefor, and a display device. In the display substrate, a pixel defining layer comprises a first pixel aperture and a first isolation aperture, the first pixel aperture is located on the side of a first electrode of a first light-emitting element distant from a base substrate and exposes at least part of the first electrode, and the first isolation aperture is located on the periphery of the first pixel aperture; the pixel defining layer comprises a first pixel defining portion located between the first pixel aperture and the first isolation aperture and a second pixel defining portion located on the side of the first isolation aperture distant from the first pixel aperture; and the first pixel defining portion comprises a first main body portion and a first compensation portion which are connected, the first compensation portion is located on the side of the first main body portion close to the first isolation aperture, and the first compensation portion is provided with a first protruding contour protruding from the top of the first main body portion in a direction away from the base substrate, so that the maximum height of the first compensation portion is greater than the maximum height of the first main body portion. Therefore, the display substrate can avoid dark spots and color casts.

A display substrate and a display apparatus. The display substrate comprises a base substrate, sub-pixels located on the base substrate, and a limiting structure. The sub-pixel comprises a light-emitting functional layer, which comprises a plurality of film layers; and the limiting structure is located between two adjacent sub-pixels of different colors and is configured to partition at least one layer of the light-emitting functional layer. The sub-pixels comprise sub-pixels of a first color, and the limiting structure adjacent to the sub-pixels of the first color in the limiting structure is a first limiting structure; a light-emitting area of the sub-pixels of the first color comprises a first edge extending in a first direction; the first limiting structure comprises two limiting end points, wherein in the first direction, at least one limiting end point protrudes relative to an edge end point of the first edge, or the first limiting structure has a curved shape; and the total length of the first limiting structure is greater than the size of the light-emitting area of the sub-pixels of the first color in at least one direction, so that the low-grayscale crosstalk problem caused by leakage current between the sub-pixels of the first color and sub-pixels of other colors is mitigated.

A display substrate and a display device. The display substrate comprises sub-pixels, pixel defining patterns, and defining structures. The sub-pixels each comprise a light-emitting functional layer; the pixel defining patterns each comprise openings and pixel defining portions surrounding the openings, and at least part of each light-emitting functional layer is isolated in at least one opening; and the defining structures are located between the pixel defining portions and a base substrate. The defining structures each are located between two corresponding adjacent sub-pixels of different colors; the defining structures each comprise a first portion covered by the corresponding pixel defining portion and a second portion exposed out of the corresponding opening; the second portions of the defining structures are configured to isolate the light-emitting functional layers; and the defining structures are made of an organic material, and the orthographic projection of the edge of the side surface of each second portion distant from one side of the base substrate on the base substrate falls within the orthographic projection of the corresponding opening on the base substrate, such that the corresponding light-emitting functional layer is isolated to reduce crosstalk, thereby minimizing the effect of the defining structures on the process and productivity while guaranteeing the electrode flatness and normal light-emitting effects of the sub-pixels.

A display substrate, a display panel, and a display device. The display substrate comprises sub-pixels, a pixel defining layer, a first defining structure, and a support structure; the pixel defining layer comprises a plurality of openings and a pixel defining portion; the plurality of openings comprise a plurality of first openings and a plurality of second openings; the first defining structure comprises a first portion overlapping with the pixel defining portion and a second portion exposed out of the second openings; the second portion of the first defining structure is configured to isolate at least one layer in a light-emitting function layer; the minimum distance between the orthographic projection of the support structure on a base substrate and the orthographic projection of the first defining structure on the base substrate is a first distance; the minimum distance to the orthographic projection of the second openings on the base substrate is a second distance; and the first distance and the second distance are both greater than 0 micrometer and less than 10 micrometers. Therefore, the support structure has a good shape and provides reliable support force while the light-emitting function layer is isolated to reduce crosstalk.

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A display substrate, comprising a base, at least one first display unit located in each display island region, and a plurality of second display units located in a second display region and arranged in an array. The second display region is located on at least one side of the first display region. The first display region comprises a plurality of display island regions and a plurality of light-transmissive regions which are arranged in an array. The first display unit comprises N first light-emitting elements and M first pixel circuits, M and N being both integers greater than 1, and M being less than N. At least one first pixel circuit is connected to at least two first light-emitting elements. A second display unit comprises M second light-emitting elements and M second pixel circuits, the M second pixel circuits being connected on a one-to-one basis to the M second light-emitting elements. The arrangement mode of the N first light-emitting elements of the first display unit is different from the arrangement mode of the M second light-emitting elements of the second display unit.

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The present application relates to the technical field of display. Disclosed are a pixel driving circuit, a display panel and a light-emission control method. The pixel driving circuit comprises: a turn-on control sub-circuit, which turns on a gate of a driving transistor and a first node in response to a signal from a first light-emission control signal end; a data writing sub-circuit, which writes a driving signal into the first node in response to a signal from a scanning signal end; a coupling sub-circuit, which stores the driving signal and a threshold value voltage of the driving transistor; a first light-emission control sub-circuit, which provides a signal from a first power source end to a first electrode of the driving transistor in response to a signal from a second light-emission control signal end; and a second light-emission control sub-circuit, which turns on a second electrode of the driving transistor and a light-emission device in response to a signal from the first light-emission control signal end. By means of the provision of a turn-on control sub-circuit, the effect of the capacitance value of a light-emission device on a pixel circuit is effectively blocked, thereby making the display brightness of the pixel circuit in a low-grayscale picture more uniform.

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