Patent Description:
At present, an Organic Light-Emitting Diode (OLED) display panel is also called an Organic electroluminescent display panel or an Organic Light-Emitting semiconductor display panel. Color gamut is an important index for evaluating the OLED display panel, and high-color-gamut display may bring better visual experience to a user, and is an index mainly pursued in new product development at present.

International patent application <CIT> discloses a long-lifetime light-emitting device. The light-emitting apparatus includes a first light-emitting device and a first color conversion layer. The first color conversion layer contains a first substance. An EL layer of the first light-emitting device includes a first layer, a second layer, a third layer, a light-emitting layer, and a fourth layer in this order from the anode side. The first layer contains a first organic compound and a second organic compound. The second layer contains a third organic compound. The third layer contains a fourth organic compound. The light-emitting layer contains a fifth organic compound and a sixth organic compound. The fourth layer contains a seventh organic compound. The first organic compound is an organic compound having an electron accepting property to the second organic compound. The fifth organic compound is an emission center substance. The HOMO level of the second organic compound is higher than or equal to -<NUM>. 7eV and lower than or equal to -<NUM>.

US patent application <CIT> discloses an organic light emitting diode display including: a substrate; a first electrode and an auxiliary electrode positioned on the substrate and separated from each other; an absorption electrode positioned on the auxiliary electrode; an organic emission layer positioned on the first electrode and having a contact hole exposing the auxiliary electrode and the absorption electrode; and a second electrode positioned on the organic emission layer and connected to the auxiliary electrode and the absorption electrode through the contact hole.

US patent application <CIT> relates to a pixel array, an electro optical device including the pixel array, an electric apparatus utilizing the electro optical device as a display device, and a method of driving pixel array. In a pixel array, pixels are two-dimensionally arranged, each of the pixels including a subpixel of the first color having a highest luminosity factor, a subpixel of the second color and a subpixel of the third color having a lowest luminosity factor. A circuit element in each of subpixels of the first color to the third color in each of the pixels is arranged in a row direction. A light emitting region of a subpixel of the first color and a light emitting region of a subpixel of the second color are arranged in the first direction inclined to the row direction. A light emitting region of a subpixel of the third color is arranged in the second direction orthogonal to the first direction, with respect to the light emitting region of the subpixel of the first color and the light emitting region of the subpixel of the second color.

US patent application <CIT> discloses a display device, which includes a light-emitting panel having first to third light-emitting diodes and a color panel on the light-emitting panel. The color panel includes first to third color areas that transmit light of different colors and a light-blocking area. The light-emitting panel includes two first power lines spaced apart from each other, connecting electrodes electrically connected to the two first power lines, and an insulating layer on the connecting electrodes, the insulating layer having openings each of which exposing a respective one of the connecting electrodes. The first light-emitting diode, the second light-emitting diode, and the third light-emitting diode are spaced apart from one another between the two first power lines. The second color area is smaller than each of the first color area and the third color area in size. The second color area is disposed between the first color area and the third color area.

US patent application <CIT> discloses a color filter and a display apparatus including the same. The color filter includes a substrate including pixel areas and a light-shielding area which is disposed between adjacent pixels areas; and a color conversion layer which color-converts incident light of an incident color and emits color-converted light toward the substrate, the color conversion layer including a first color conversion pattern in a first pixel area among the pixel areas and with which the incident light of the incident color is converted into light of a first color; and a second color conversion pattern in a second pixel area among the pixel areas and with which the incident light of the incident color is converted into light of a second color; and a partition wall in the light-shielding area and between the first color conversion pattern and the second color conversion pattern, the partition wall including a light-scattering material which scatters light incident thereto.

US patent application <CIT> discloses a display device. The display device may include a first substrate, a first color conversion unit, a second color conversion unit, a light diffusion unit, and a first wall. The first color conversion unit is located on the first substrate. The second color conversion unit is disposed on the first substrate and is spaced from the first color conversion unit. The light diffusion unit is disposed between the first color conversion unit and the second color conversion unit. The first wall is disposed between the first color conversion unit and the light diffusion unit. The first color conversion unit includes a first-color conversion layer. The first-color conversion layer overlaps two pixel regions.

US patent application <CIT> discloses an organic light-emitting display device including a wavelength conversion layer. The display device includes a pixel including a first subpixel to display a first color, a second subpixel to display a second color, and a third subpixel to display a third color, wherein the pixel includes a first light outputting region overlapping the first subpixel, a second light outputting region overlapping the second subpixel, a third light outputting region overlapping the third subpixel, and a light blocking region disposed around each of the light outputting regions, the first light outputting region has a generally square shape, and the second light outputting region and the third light outputting region each have a generally rectangular shape.

The embodiment of present disclosure provides a display substrate, a display panel and a display apparatus.

In a first aspect, an embodiment of the present disclosure provide a display substrate, including:.

In some embodiments, each of the plurality of pixel circuits includes a driving transistor and an insulating layer; each of the first sub-pixel, the second sub-pixel and the third sub-pixel includes an anode; the driving transistor, the insulating layer and the anode are sequentially arranged away from the base substrate;.

In some embodiments, in each of the plurality of pixels, the second sub-pixel and the third sub-pixel are on a same side of the first sub-pixel; the second sub-pixel and the third sub-pixel are arranged in a second direction;.

In some embodiments, the first sub-pixel and the third sub-pixel are arranged in the first direction;
the first direction is perpendicular to the second direction.

In some embodiments, in the pixel, a size of the first sub-pixel in the second direction is equal to a sum of sizes of the second sub-pixel, the third sub-pixel and a space between the second sub-pixel and the third sub-pixel in the second direction; and
a size of the first sub-pixel in the first direction is less than a size of any one of the second sub-pixel and the third sub-pixel in the first direction.

In some embodiments, an orthographic projection of the first conductive layer on the base substrate is in an orthographic projection of a spacer region between at least a part of pixels adjacent to each other in the first direction on the base substrate.

In some embodiments, a size of the first conductive layer in the second direction is equal to a sum of sizes of two pixels adjacent to each other in the second direction and a space between the two pixels, in the second direction; and
a size of the first conductive layer in the first direction is less than a size of the first sub-pixel in the first direction.

In some embodiments, the first distance is equal to the second distance; and
the third distance is equal to a sum of the first distance, the second distance, and a width of the first sub-pixel in the first direction.

In some embodiments, in the pixel, the second sub-pixel, the first sub-pixel, and the third sub-pixel are sequentially arranged in the first direction.

In some embodiments, a size of the first conductive layer in the first direction is greater than a sum of sizes of the first sub-pixel and the second sub-pixel in the first direction; or the size of the first conductive layer in the first direction is greater than a sum of the sizes of the first sub-pixel and the third sub-pixel in the first direction; and;
a size of the first conductive layer in a second direction is less than a size of the first sub-pixel in the second direction.

In some embodiments, the first distance is less than the second distance; and
the second distance is equal to a sum of the first distance, a width of the second sub-pixel in the first direction, and the third distance.

In some embodiments, in the pixel, the second sub-pixel, the third sub-pixel, and the first sub-pixel are sequentially arranged in the first direction.

In some embodiments, in the pixel, a size of the first sub-pixel in a second direction is less than a size of any one of the second sub-pixel and the third sub-pixel in the second direction;.

In some embodiments, a size of the first conductive layer in the first direction is less than the first distance or the second distance; and
a size of the first conductive layer in the second direction is less than a size of the first sub-pixel in the second direction.

In some embodiments, any two adjacent rows of pixels arranged in the second direction are mirror-symmetrical;
or any two adjacent columns of pixels arranged in the first direction are mirror-symmetrical.

In some embodiments, in the array of the plurality of pixels, each row of pixels is arranged in the second direction;.

In some embodiments, in the array of the plurality of pixels, each row of pixels is arranged in the second direction; and
the first sub-pixels in a (2n+<NUM>)th row and a (2n+<NUM>)th row of pixels are arranged in the second direction, where n is an integer, n =<NUM>,<NUM>,<NUM>.

In some embodiments, the first sub-pixel is a blue sub-pixel; the second sub-pixel is a red sub-pixel; and the third sub-pixel is a green sub-pixel;
or the first sub-pixel is a blue sub-pixel; the second sub-pixel is a green sub-pixel; and the third sub-pixel is a red sub-pixel.

In some embodiments, the first via is formed in the insulating layer, and configured to connect the anode of each of the first sub-pixel, the second sub-pixel and the third sub-pixel to the first electrode of the driving transistor in a respective one of plurality of pixel circuits.

In some embodiments, the insulating layer is further provided with a second via formed for connecting the first conductive layer to the second conductive layer; and
an orthographic projection of the second via on the base substrate is between orthographic projections of two pixels adjacent to each other in the second direction on the base substrate.

In some embodiments, each of the first distance and the second distance in the pixel is in a range from <NUM> to <NUM>.

In some embodiments, orthographic projections of the first via and the second via on the first direction do not overlap with each other.

In some embodiments, orthographic projections of the first via and the second via on the first direction at least partially overlap with each other.

In some embodiments, the display substrate further includes a pixel defining layer on a side of the insulating layer away from the base substrate,.

In some embodiments, the first conductive layer includes a first sub-layer, a second sub-layer and a third sub-layer sequentially stacked in a direction away from the base sub strate;.

In some embodiments, in the pixel, a ratio of aperture ratios of the second sub-pixel, the third sub-pixel and the first sub-pixel is in a range from <NUM>: <NUM>: <NUM> to <NUM>: <NUM>: <NUM>.

In some embodiments, in the pixel, shapes of orthographic projections of the second sub-pixel, the third sub-pixel and the first sub-pixel on the base substrate each include a rectangle.

In some embodiments, each of the first sub-pixel, the second sub-pixel and the third sub-pixel further includes a color conversion layer on a side of the cathode away from the light-emitting functional layer;.

In some embodiments, the color conversion layer includes a first color conversion unit, a second color conversion unit, and a first transmission unit;.

In some embodiments, the display substrate further includes a bank and a first black matrix, wherein the bank and the first black matrix are on a side of the pixel defining layer away from the base substrate, and the first black matrix and the bank are sequentially arranged away from the pixel defining layer; and
each of orthographic projections of the bank and the first black matrix on the base substrate at least partially overlaps an orthographic projection of the pixel defining layer on the base substrate.

In some embodiments, each of the first sub-pixel, the second sub-pixel and the third sub-pixel further includes a color filter layer on a side of the color conversion layer away from the base substrate;.

In some embodiments, the display substrate further includes a second black matrix on a side of the bank away from the base substrate; and
an orthographic projection of the second black matrix on the base substrate is within the orthographic projection of the first black matrix on the base substrate.

In some embodiments, orthographic projections of the plurality of pixel circuits on the base substrate have an equal area.

In some embodiments, the orthographic projection of each of the first sub-pixel, the second sub-pixel and the third sub-pixel on the base substrate and an orthographic projection of the pixel circuit electrically connected to this sub-pixel on the base substrate are at least partially non-overlapping with each other.

In some embodiments, the display substrate further includes a first encapsulation layer, a second encapsulation layer, and an anti-reflection layer;.

In a second aspect, an embodiment of the present disclosure further provides a display panel, including the above described display substrate.

In a third aspect, an embodiment of the present disclosure further provides a display apparatus, including the above described display panel.

The accompanying drawings, which are used to provide a further understanding of the present disclosure and constitute a part of this specification, serve to explain the present disclosure together with the following specific embodiments, but do not constitute a limitation to the present disclosure. The above and other features and advantages will become more apparent to one of ordinary skill in the art by describing detailed exemplary embodiments with reference to the accompanying drawings, in which:.

In order to enable one of ordinary skill in the art to better understand the technical solutions of the embodiments of the present disclosure, a display substrate, a display panel and a display apparatus provided in the embodiments of the present disclosure will be further described in detail with reference to the accompanying drawings and the detailed description below.

The embodiments of the present disclosure will be described more fully hereinafter with reference to the accompanying drawings, but the illustrated embodiments may be embodied in different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that the present disclosure will be thorough and complete, and will fully convey the scope of the present disclosure to one of ordinary skill in the art.

The embodiments of the present disclosure are not limited to the embodiments shown in the drawings, but include modifications of configurations formed based on a manufacturing process. Accordingly, regions shown in the figures are schematic, and the shapes of the regions shown in the figures are shown as specific shapes, but are not intended to be limiting.

In the related art, Quantum Dots (QDs) are used as a color conversion layer and OLEDs are used as light-emitting elements to make an OLED display panel (namely, a QD-OLED display panel), which can realize high color gamut and have an improved viewing angle color shift. Referring to <FIG>, a large-sized QD-OLED display panel includes a plurality of pixels <NUM> arranged in an array, and each of the pixels may include red, green, and blue sub-pixels <NUM>, <NUM>, and <NUM> arranged adjacent to each other. The pixel <NUM> includes a light-emitting element and a color conversion layer vertically arranged, wherein the light-emitting element may emit blue light, and the color conversion layer includes a first color conversion unit, a second color conversion unit, and a first transmission unit. Specifically, blue light emitted by the light-emitting element is converted into red light by passing through the first color conversion unit; blue light emitted by the light-emitting element is converted into green light by passing through the second color conversion unit; the first transmission unit may contain scattering particles, and blue light emitted by the light-emitting element may pass through the first transmission unit, and exit still as blue light under an action of the scattering particles. However, the blue sub-pixel <NUM> may cause a crosstalk to an adjacent sub-pixel emitting light of other color due to a large cell thickness of the OLED display panel, which causes an optical crosstalk between adjacent sub-pixels, resulting in light leakage, and finally resulting in low color gamut of the OLED display panel.

Specifically, an optical crosstalk between adjacent sub-pixels is shown in <FIG> and <FIG>. Since the cell thickness of the OLED display panel is larger (the cell thickness is a distance from a surface, of the encapsulation layer for encapsulating the sub-pixels close to a light-emitting layer, to a pixel circuit substrate of the OLED display panel), blue light emitted by the light-emitting element in the blue sub-pixel may irradiate on the quantum dot color conversion units of adjacent red and green sub-pixels, so as to excite a first color conversion unit to emit red light and a second color conversion unit to emit green light, thereby causing an optical crosstalk, as shown in <FIG>. In this case, since a part of the blue light emitted by the light-emitting element of the blue sub-pixel is converted by the first transmission unit, there will be an influence of crosstalk light conversion efficiency. Meanwhile, blue light emitted by the light-emitting element in the red sub-pixel and blue light emitted by the light-emitting element in the green sub-pixel may similarly irradiate on the first transmission unit of the blue sub-pixel, and the light scattered by and outgoing from the first transmission unit causes an optical crosstalk, but in this case, there is no influence of crosstalk light conversion efficiency, as shown in <FIG>. In addition, the blue light emitted by the light-emitting element in the red sub-pixel and the blue light emitted by the light-emitting element in the green sub-pixel may similarly irradiate on the quantum dot conversion layers in the gree sub-pixel and the red sub-pixel, resepctively, which causes an optical crosstalk, as shown in <FIG>.

In an actual measurement, it is found that the influence of an optical crosstalk between the red sub-pixel and the green sub-pixel is relatively small, and the influence of an optical crosstalk between the blue sub-pixel and a sub-pixel of other color is the most serious, which is prone to cause a phenomenon of a relatively serious light leakage between the sub-pixels, and is not beneficial to improving the color gamut of the OLED display panel, so that the display effect of the OLED display panel is relatively seriously influenced.

Aiming at the problem of a serious optical crosstalk between the blue sub-pixel and a sub-pixel of other color in the QD-OLED display panel, the embodiments of the present disclosure provide the following technical solutions.

In a first aspect, referring to <FIG>, <FIG>, an embodiment of the present disclosure provides a display substrate, including: a base substrate <NUM>; a plurality of pixel circuits arranged on the base substrate <NUM>; and a plurality of pixels <NUM> arranged in an array and located on a side of the pixel circuits away from the base substrate <NUM>. The pixel <NUM> includes a first sub-pixel <NUM>, a second sub-pixel <NUM>, and a third sub-pixel <NUM>; orthographic projections of the first sub-pixel <NUM>, the second sub-pixel <NUM> and the third sub-pixel <NUM> on the base substrate <NUM> do not overlap with each other; the first sub-pixel <NUM>, the second sub-pixel <NUM> and the third sub-pixel <NUM> are electrically connected to the pixel circuits in a one-to-one correspondence; the first sub-pixel <NUM> and the second sub-pixel <NUM> are separated from each other by a first distance in a first direction Y, and a first via <NUM> is arranged in the first distance; the first sub-pixel <NUM> and the third sub-pixel <NUM> are separated from each other by a second distance in the first direction Y, and a first via <NUM> is arranged in the second distance; the second sub-pixel <NUM> and the third sub-pixel <NUM> are separated from each other by a third distance in the first direction Y.

In some embodiments, referring to <FIG> and <FIG>, the pixel circuit includes a driving transistor <NUM> and an insulating layer <NUM>; the first sub-pixel <NUM>, the second sub-pixel <NUM>, and the third sub-pixel <NUM> each include an anode <NUM>; the driving transistor <NUM>, the insulating layer <NUM> and the anode <NUM> are sequentially arranged away from the base substrate <NUM>. The first vias <NUM> are formed in the insulating layer <NUM> for connecting the anodes <NUM> of the first sub-pixel <NUM>, the second sub-pixel <NUM> and the third sub-pixel <NUM> to first electrodes of the driving transistors <NUM> in the corresponding pixel circuits, respectively.

In some embodiments, with the first vias <NUM> in the first and second distances, the first and second distances may be increased from about <NUM> in the related art to <NUM> to <NUM>, respectively; therefore, an optiocal crosstalk between the first sub-pixel <NUM> and the second sub-pixel <NUM> and an optical crosstalk between the first sub-pixel <NUM> and the third sub-pixel <NUM> may be greatly eliminated or avoided, the phenomenon of light leakage between the first sub-pixel <NUM> and the second sub-pixel <NUM> and light leakage between the first sub-pixel <NUM> and the third sub-pixel <NUM> may be greatly eliminated or avoided, which is beneficial to improving the color gamut of the display substrate and finally improving the display effect of the display substrate. Referring to <FIG> and <FIG>, before improvement, a distance between the first sub-pixel <NUM> and the second sub-pixel <NUM>/the third sub-pixel <NUM> is a distance between the adjacent edges of the first sub-pixel <NUM> and the second sub-pixel <NUM>/the third sub-pixel <NUM>, which are adjacent to each other. For example, the distance between the first sub-pixel <NUM> and the second sub-pixel <NUM>/the third sub-pixel <NUM> is a sum of a size b1, a size b2 and a size b3 in the first direction Y, wherein the size b1 is a size of an overlapping region between orthographic projections of the anode of the first sub-pixel <NUM> and the pixel defining layer between the adjacent first sub-pixel <NUM> and second sub-pixel <NUM>/third sub-pixel <NUM>, the size b2 is a size of a portion of the pixel defining layer non-overlapping with the anode of the adjacent first sub-pixel <NUM> and the anode of the adjacent second sub-pixel <NUM>/third sub-pixel <NUM>, and the size b3 is a size of an overlapping region between orthographic projections of the anode of the second sub-pixel <NUM>/the third sub-pixel <NUM> and the pixel defining layer between the adjacent first sub-pixel <NUM> and second sub-pixel <NUM>/third sub-pixel <NUM>. For example, b1+b2+b3=(<NUM>+<NUM>+<NUM>)µm=<NUM>. Referring to <FIG> and <FIG>, after the improvement, the distance between the first sub-pixel <NUM> and the second sub-pixel <NUM>/the third sub-pixel <NUM> is the distance between the adjacent edges of the first sub-pixel <NUM> and the second sub-pixel <NUM>/the third sub-pixel <NUM>, which are adjacent to each other, in the first direction Y, plus a size p of the first via <NUM> in the first direction Y. For example, the first via <NUM> is a square via of <NUM>×<NUM>, the size p of the first via <NUM> in the first direction Y is <NUM>; the distance between the first sub-pixel <NUM> and the second sub-pixel <NUM>/the third sub-pixel <NUM> after the improvement is: b1+b2+b3+p=(<NUM>+<NUM>+<NUM>+<NUM>)µm=<NUM>.

In this embodiment, under the condition that the cell thickness of the display panel is not changed, the arrangement position of the pixel circuit is kept unchanged, and the arrangement position of the sub-pixels is changed, so that the first via <NUM>, at least a part of which is located in a region where the sub-pixels are located in the related art, are completely located in a region of the first distance between the first sub-pixel <NUM> and the second sub-pixel <NUM> and a region of the second distance between the first sub-pixel <NUM> and the third sub-pixel <NUM>. Compared with the arrangement manner of the sub-pixels in the related art, the first distance between the first sub-pixel <NUM> and the second sub-pixel <NUM> and the second distance between the first sub-pixel <NUM> and the third sub-pixel <NUM> may be increased, so that an optical crosstalk between the first sub-pixel <NUM> and the second sub-pixel <NUM> and an optical crosstalk between the first sub-pixel <NUM> and the third sub-pixel <NUM> may be greatly elimianted or avoided, and further the phenomenon of light leakage between the first sub-pixel <NUM> and the second sub-pixel <NUM> and light leakage between the first sub-pixel <NUM> and the third sub-pixel <NUM> may be greatly eliminated or avoided, which is beneficial to improving the color gamut of the display substrate and finally improving the display effect of the display substrate.

In some embodiments, referring to <FIG>, <FIG> and <FIG>, the pixel circuit further includes an auxiliary electrode <NUM>; the auxiliary electrode <NUM> includes a first conductive layer <NUM>, the first conductive layer <NUM> is in a same layer as the anode <NUM>, and an orthographic projection of the first conductive layer <NUM> on the base substrate <NUM> and an orthographic projection of the anode <NUM> on the base substrate <NUM> do not overlap with each other; the auxiliary electrode <NUM> further includes a second conductive layer <NUM>, the second conductive layer <NUM> is in a same layer as a first electrode <NUM> and a second electrode <NUM> of the driving transistor <NUM>, and an orthographic projection of the second conductive layer <NUM> on the base substrate <NUM> and an orthographic projection of the first electrode <NUM> and the second electrode <NUM> of the driving transistor <NUM> on the base substrate <NUM> do not overlap with each other.

In some embodiments, the insulating layer <NUM> is further provided with a second via <NUM> for connecting the first conductive layer <NUM> to the second conductive layer <NUM>; an orthographic projection of the second via <NUM> on the base substrate <NUM> is located between orthographic projections of two pixels <NUM> adjacent to each other in a second direction X on the base substrate <NUM>.

Compared with the arrangement manner of the sub-pixels in which at least a part of the second via <NUM> is located in a region where the sub-pixels are located in the related art, the first and second distances may be further increased by making the orthographic projection of the second via <NUM> on the base substrate <NUM> be located between the orthographic projections of two pixels <NUM> adjacent to each other in the second direction X on the base substrate <NUM>, so that an optical crosstalk between the first sub-pixel <NUM> and the second sub-pixel <NUM> and an optical crosstalk between the first sub-pixel <NUM> and the third sub-pixel 221may be greatly elimianted or avoided, the phenomenon of light leakage between the first sub-pixel <NUM> and the second sub-pixel <NUM> and light leakage between the first sub-pixel <NUM> and third sub-pixel <NUM> may be greatly eliminated or avoided, , which is beneficial to improving the color gamut of the display substrate and finally improving the display effect of the display substrate.

In some embodiments, referring to <FIG>, orthographic projections of the first via <NUM> and the second via <NUM> on the first direction Y do not overlap with each other. Thus, the distance between the first sub-pixel <NUM> and the second sub-pixel <NUM> or the third sub-pixel <NUM>, which are adjacent to each other, may be increased by not only the size p of the first via <NUM> in the first direction Y, but also a size n of the second via <NUM> in the first direction Y, so that the distance between the first sub-pixel <NUM> and the second sub-pixel <NUM> or the third sub-pixel <NUM>, which are adjacent to each other, is further increased, and further, an optical crosstalk between the first sub-pixel <NUM> and the second sub-pixel <NUM> and an optical crosstalk between the first sub-pixel <NUM> and the third sub-pixel <NUM> may be greatly eliminated or avoided.

In some embodiments, referring to <FIG>, orthographic projections of the first via <NUM> and the second via <NUM> on the first direction Y at least partially overlap with each other. If the orthographic projections of the first via <NUM> and the second via <NUM> on the first direction Y partially overlap with each other, the distance between the first sub-pixel <NUM> and the second sub-pixel <NUM> or the third sub-pixel <NUM> is increased; if the orthographic projections of the first via <NUM> and the second via <NUM> on the first direction Y completely overlap with each other, and a size of the orthographic projection of the first via <NUM> on the first direction Y is greater than a size of the orthographic projection of the second via <NUM> on the first direction Y, the distance between the first sub-pixel <NUM> and the second sub-pixel <NUM> or the third sub-pixel <NUM> is also increased, so that the distance between the first sub-pixel <NUM> and the second sub-pixel <NUM> or the third sub-pixel <NUM>, which are adjacent to each other, is further increased, and further, an optical crosstalk between the first sub-pixel <NUM> and the second sub-pixel <NUM> and an optical crosstalk between the first sub-pixel <NUM> and the third sub-pixel <NUM> may be greatly eliminated or avoided.

In some embodiments, the first distance and the second distance in the pixel <NUM> are each in a range from <NUM> to <NUM>. Through the above technical solution of disposing the first via <NUM> and the second via <NUM> in the first distance and the second distance, respectively, the first distance and the second distance may be increased from a smaller distance before the arrangement of sub-pixels is improved to a larger distance after the arrangement of sub-pixels is improved, so that an optical crosstalk between the first sub-pixel <NUM> and the second sub-pixel <NUM> and an optical crosstalk between the first sub-pixel <NUM> and the third sub-pixel <NUM> may be greatly eliminated or avoided.

In this embodiment, by adjusting the arrangement of sub-pixels to make the first via <NUM> and the second via <NUM> be located in the first distance and the second distance, respectively, distribution positions of the first via <NUM> and the second via <NUM> are ensured not to affect an aperture ratio of the sub-pixels and a resolution of the display substrate, that is, the resolution of the display substrate and the aperture ratio of the sub-pixels are not changed due to the change of the distribution positions of the first via <NUM> and the second via <NUM>.

In some embodiments, referring to <FIG> and <FIG>, the display substrate further includes a pixel defining layer <NUM> on a side of the insulating layer <NUM> away from the base substrate <NUM>; each of the first sub-pixel <NUM>, the second sub-pixel <NUM> and the third sub-pixel <NUM> is located in a region defined by the pixel defining layer <NUM>; each of the first sub-pixel <NUM>, the second sub-pixel <NUM>, and the third sub-pixel <NUM> further includes a light-emitting functional layer <NUM> and a cathode <NUM>; the light-emitting functional layer <NUM> and the cathode <NUM> are sequentially arranged away from the anode <NUM>; orthographic projections of the light-emitting functional layer <NUM> and the cathode <NUM> on the base substrate <NUM> at least partially overlap the orthographic projection of the anode <NUM> on the base substrate <NUM>, and the overlapping portion forms a light-emitting element; the pixel defining layer <NUM> is formed with an opening in a region corresponding to the first conductive layer <NUM>; the light-emitting functional layer <NUM> and the cathode <NUM> further extend into the opening, and the portions of the light-emitting functional layer <NUM> and the cathode <NUM> located inside the opening are disconnected from the portions of the light-emitting functional layer <NUM> and the cathode <NUM> located outside the opening, at an edge of the opening; the portion of the cathode <NUM> outside the opening covers a broken edge of the light-emitting functional layer <NUM> at the edge of the opening, and the portion of the cathode <NUM> outside the opening further extends to be in contact with at least a part of an edge end face of the first conductive layer <NUM>.

The cathode <NUM> is in contact with the first conductive layer <NUM> at the edge of the opening of the pixel defining layer <NUM>, thereby achieving a connection between the cathode <NUM> and the first conductive layer <NUM>; the first conductive layer <NUM> is further connected to the second conductive layer <NUM> through the second via <NUM>, so that the cathode <NUM>, the first conductive layer <NUM> and the second conductive layer <NUM> are connected to each other, i.e. the cathode <NUM> and the auxiliary electrode <NUM> are connected to each other. In a top emission type OLED display substrate, since there is a requirement for a light transmission of the cathode <NUM>, the cathode <NUM> is generally has a thin film layer and a large resistance, and the auxiliary electrode <NUM> may increase an area of a cross section of the cathode <NUM>, so as to reduce the resistance of the cathode <NUM>, further reduce a voltage drop on the cathode <NUM> and make the voltage of the whole cathode <NUM> more consistent, thereby improving a display uniformity and a display brightness of the display substrate, and being beneficial to improving the display effect of the display substrate.

In some embodiments, referring to <FIG>, the first conductive layer <NUM> includes a first sub-layer <NUM>, a second sub-layer <NUM>, and a third sub-layer <NUM> stacked sequentially in a direction away from the base substrate <NUM>; a shape of a cross section of the first conductive layer <NUM> perpendicular to the base substrate <NUM> includes a shape of "H" rotated by <NUM> degrees or a shape of an inverted trapezoid; the portion of the cathode <NUM> outside the opening is at least in contact with edge end faces of the second sub-layer <NUM> and the third sub-layer <NUM>. If the shape of the cross section of the first conductive layer <NUM> is a shape of "H" rotated by <NUM> degrees, referring to <FIG>, widths of the first sub-layer <NUM> and the third sub-layer <NUM> in the cross section are greater than a width of the second sub-layer <NUM> in the cross section, respectively; if the shape of the cross section of the first conductive layer <NUM> is a shape of an inverted trapezoid, the width of the third sub-layer <NUM> in the cross section is greater than the width of the second sub-layer <NUM> in the cross section, and the width of the second sub-layer <NUM> in the cross section is greater than the width of the first sub-layer <NUM> in the cross section. The width of any one sub-layer in the cross section refers to a size of this sub-layer in a direction perpendicular to the direction away from the base substrate <NUM>. The shape of the cross section of the first conductive layer <NUM> is a result of a conventional manufacturing processes, and is not described in detail herein, as long as the cathode <NUM> may be ensured to be in good contact with the edge end face of the first conductive layer <NUM>.

In some embodiments, the anode <NUM> and the first conductive layer <NUM> have a same lamination structure of the sub-layers. That is, the anode <NUM> is also formed by stacking three sub-layers, which may reduce a resistance of the anode <NUM> and improve the display effect. The first sub-layer <NUM> and the third sub-layer <NUM> may be made of, for example, indium tin oxide, and the second sub-layer <NUM> may be made of, for example, aluminum. The materials of the three sub-layers of the anode <NUM> are the same as the materials of the three sub-layers of the first conductive layer <NUM>, respectively, so that the anode and the first conductive layer <NUM> may be prepared by a one-patterning process, and the preparation process is simplified. The anode <NUM> is opaque to light and may reflect light irradiated thereto, thereby implementing a top emission type OLED display substrate. Alternatively, the anode <NUM> may transmit light, and in this case, a top emission type OLED display substrate may be implemented by providing a reflective layer on a side of the anode <NUM> close to the base substrate <NUM> to reflect light irradiated thereto. The top emission type OLED display substrate may achieve a large display aperture ratio.

In some embodiments, referring to <FIG>, <FIG> and <FIG>, in the pixel <NUM>, the second sub-pixel <NUM> and the third sub-pixel <NUM> are on a same side of the first sub-pixel <NUM>; and the second sub-pixel <NUM> and the third sub-pixel <NUM> are arranged in a second direction X; the first distance is equal to the second distance; and the third distance is less than the first distance.

In some embodiments, referring to <FIG>, the first sub-pixel <NUM> and the third sub-pixel <NUM> are arranged in the first direction Y; the first direction Y is perpendicular to the second direction X.

In some embodiments, referring to <FIG>, in the pixel <NUM>, a size of the first sub-pixel <NUM> in the second direction X is equal to a sum of sizes of the second sub-pixel <NUM>, the third sub-pixel <NUM> and an interval between the second sub-pixel <NUM> and the third sub-pixel <NUM> in the second direction X; a size of the first sub-pixel <NUM> in the first direction Y is less than a size of any one of the second sub-pixel <NUM> and the third sub-pixel <NUM> in the first direction Y.

In a design of an aperture of a sub-pixel, luminous efficiency and lifetime of the sub-pixel need to be considered comprehensively to balance the two. Since the first sub-pixel <NUM> occupies a small proportion in color mixing, and the first sub-pixel <NUM> does not involve a matter of excitation conversion of the quantum dot color conversion layer, a relative luminous efficiency thereof is high, a current of the sub-pixel is small, and the lifetime is long; in each of the second sub-pixel <NUM> and the third sub-pixel <NUM>, the quantum dot color conversion layer is excited to convert blue light into red light and green light, respectively, that is, it is required to make the quantum dot color conversion layer be excited to convert the blue light into light of corresponding colors, so that a relative luminous efficiency thereof is low, a current of the sub-pixel is high, and the lifetime is short. A ratio of aperture ratios of the sub-pixels and a ratio of lifetimes of the sub-pixels may be calculated by the following formula. <MAT> <MAT>.

Where a is an acceleration factor and is a fixed value; LTpixel is the lifetime of the sub-pixel; LTltc is a measurable lifetime of the OLED light-emitting element (including the anode, the light-emitting functional layer and the cathode); Jpixel is a current density of the sub-pixel; Jltc is a given current density of the OLED light-emitting element; Ipixel is a current of the sub-pixel; S is an area of the aperture of the sub-pixel; AR is the aperture ratio of the sub-pixel.

When the data such as color dot efficiency of the sub-pixel is fixed, the lifetime of the sub-pixel depends on the aperture ratio AR of the sub-pixel, and in the OLED display substrate adopting the quantum dot color conversion layer, it may be calculated through the above formulas that an aperture required for the first sub-pixel is minimum. For example, where the current efficiencies of the second sub-pixel <NUM>, the third sub-pixel <NUM> and the first sub-pixel <NUM> are <NUM>. 3cd/A, <NUM>. 8cd/A and <NUM>. 7cd/A, respectively, to match white point or color point information of the pixel <NUM>, to which the second sub-pixel <NUM>, the third sub-pixel <NUM> and the first sub-pixel <NUM> belong, if the lifetimes of the second sub-pixel <NUM>, the third sub-pixel <NUM> and the first sub-pixel <NUM> are in accordance with <NUM>: <NUM>: <NUM>, it may be calculated according to the above formulas (<NUM>) and (<NUM>) that the ratio of the aperture ratios of the second sub-pixel <NUM>, the third sub-pixel <NUM> and the first sub-pixel <NUM> is <NUM>: <NUM>: <NUM>, that is, the aperture required for the first sub-pixel <NUM> is the minimum; an actual ratio of the apertures may be adjusted according to the white point target of the pixel <NUM> to which the sub-pixels belong and the data of color point and efficiency achieved by the actual process.

In some embodiments, referring to <FIG> and <FIG>, an orthographic projection of the first conductive layer <NUM> on the base substrate <NUM> is located in an orthographic projection of a spacer region between at least a part of pixels <NUM> adjacent to each other in the first direction Y on the base substrate <NUM>.

In some embodiments, referring to <FIG> and <FIG>, a size of the first conductive layer <NUM> in the second direction X is equal to a sum of sizes of two adjacent pixels <NUM> in the second direction X and a space between the two adjacent pixels <NUM> in the second direction X; a size of the first conductive layer <NUM> in the first direction Y is less than the size of the first sub-pixel <NUM> in the first direction Y. A size of an area of the orthographic projection of the first conductive layer <NUM> on the base substrate <NUM> affects the resistance of the cathode on one hand, and affects the aperture ratio of the sub-pixel and the resolution of the display substrate on the other hand. The distribution of the first conductive layer <NUM> in this embodiment ensures that the aperture ratio of the sub-pixel and the resolution of the display substrate are not affected. That is, although the first conductive layer <NUM> occupies a certain region, the resolution of the display substrate and the aperture ratio of the sub-pixel are not changed.

In some embodiments, the sub-pixels may alternatively be arranged as in <FIG> and <FIG>. The arrangement of the sub-pixels in <FIG> and <FIG> is similar to that in <FIG>.

In some embodiments, referring to <FIG> and <FIG>, the first distance is equal to the second distance; the third distance is equal to a sum of the first distance, the second distance, and a width of the first sub-pixel <NUM> in the first direction Y.

In some embodiments, the sub-pixels may alternatively be arranged such that the second sub-pixel <NUM>, the first sub-pixel <NUM>, and the third sub-pixel <NUM> are sequentially arranged in the first direction Y, as shown in <FIG> and <FIG>.

In some embodiments, referring to <FIG>, a size of the first conductive layer in the first direction Y is greater than a sum of the sizes of the first sub-pixel <NUM> and the second sub-pixel <NUM> in the first direction Y; or, the size of the first conductive layer in the first direction Y is greater than a sum of the sizes of the first sub-pixel <NUM> and the third sub-pixel <NUM> in the first direction Y; and a size of the first conductive layer in the second direction X is less than a size of the first sub-pixel <NUM> in the second direction X.

In some embodiments, referring to <FIG>, the first distance is less than the second distance; the second distance is equal to a sum of the first distance, a width of the second sub-pixel <NUM> in the first direction Y, and the third distance.

In some embodiments, in the pixel <NUM>, the second sub-pixel <NUM>, the third sub-pixel <NUM> and the first sub-pixel <NUM> are sequentially arranged in the first direction Y.

In some embodiments, referring to <FIG>, <FIG> and <FIG>, in the pixel <NUM>, a size of the first sub-pixel <NUM> in the second direction X is less than a size of any one of the second sub-pixel <NUM> and the third sub-pixel <NUM> in the second direction X; a size of the first sub-pixel <NUM> in the first direction Y is less than a size of any one of the second sub-pixel <NUM> and the third sub-pixel <NUM> in the first direction Y; and the first direction Y is perpendicular to the second direction X.

In some embodiments, an orthographic projection of the first conductive layer on the base substrate is located in an orthographic projection of a spacer region between at least a part of pixels <NUM> adjacent to each other in the second direction X on the base sub strate.

In some embodiments, referring to <FIG>, <FIG> and <FIG>, a size of the first conductive layer in the first direction Y is less than the first distance or the second distance; a size of the first conductive layer in the second direction X is less than the size of the first sub-pixel <NUM> in the second direction X.

In some embodiments, referring to <FIG>, any two adjacent rows of pixels <NUM> arranged in the second direction X are mirror-symmetrical. Referring to <FIG> and <FIG>, any adjacent two columns of pixels <NUM> arranged in the first direction Y are mirror-symmetrical.

In some embodiments, referring to <FIG>, <FIG> and <FIG>, in the array of pixels <NUM>, each row of pixels <NUM> is arranged in the second direction X; the second sub-pixels <NUM> in each row of pixels <NUM> are arranged in the second direction X; the third sub-pixels <NUM> in each row of pixels <NUM> are arranged in the second direction X; the first sub-pixels <NUM> in each row of pixels <NUM> are arranged in the second direction X. Thus, when the first transmission unit corresponding to the first sub-pixel <NUM> and the color conversion units corresponding to the second sub-pixel <NUM> and the third sub-pixel <NUM> are prepared by a subsequent printing or coating process, the printing or coating process may be simpler and easier to implement.

In some embodiments, referring to <FIG> and <FIG>, in the array of pixels <NUM>, each row of pixels <NUM> are arranged in the second direction X; the first sub-pixels <NUM> in a (2n+<NUM>)th and a (2n+<NUM>)th rows of pixels <NUM> are arranged in the second direction X; wherein n is an integer, n =<NUM>,<NUM>,<NUM>. Therefore, when a scattering particle layer corresponding to the first sub-pixel <NUM> is prepared by a subsequent printing or coating process, the printing or coating process may be simpler and easier to implement.

In some embodiments, the first sub-pixel <NUM> is a blue sub-pixel; the second sub-pixel <NUM> is a red sub-pixel; and the third sub-pixel <NUM> is a green sub-pixel. In some embodiments, the first sub-pixel <NUM> is a blue sub-pixel; the second sub-pixel <NUM> is a green sub-pixel; and the third sub-pixel <NUM> is a red sub-pixel.

In some embodiments, referring to <FIG>, <FIG>, <FIG>, <FIG>, <FIG>, and <FIG>, in the pixel <NUM>, a ratio of aperture ratios of the second sub-pixel <NUM>, the third sub-pixel <NUM>, and the first sub-pixel <NUM> is in a range from <NUM>: <NUM>: <NUM> to <NUM>: <NUM>: <NUM>. For example, in the pixel <NUM>, the ratio of the aperture ratios of the second sub-pixel <NUM>, the third sub-pixel <NUM>, and the first sub-pixel <NUM> is <NUM>: <NUM>: <NUM>. Thus, according to the foregoing calculation formulas of the aperture ratio of the sub-pixel and the lifetime of the sub-pixel, with the ratio of aperture ratio, a ratio of lifetimes of the second sub-pixel <NUM>, the third sub-pixel <NUM>, and the first sub-pixel <NUM><NUM>: <NUM>: <NUM> can be achieved, thereby ensuring that the aperture ratio and the lifetime of the sub-pixel reach a balance, and ensuring that a display lifetime of the display substrate is longest while a display effect of the display substrate is promoted.

In some embodiments, referring to <FIG>, <FIG>, <FIG>, <FIG>, <FIG> and <FIG>, in the pixel <NUM>, shapes of orthographic projections of the second sub-pixel <NUM>, the third sub-pixel <NUM> and the first sub-pixel <NUM> on the base substrate <NUM> each include a rectangle. Thus, when the first transmission unit corresponding to the first sub-pixel <NUM> and the color conversion units corresponding to the second sub-pixel <NUM> and the third sub-pixel <NUM> are prepared by a subseqnet printing or coating process, the printing or coating process may be simpler and easier to implement.

In some embodiments, referring to <FIG>, each of the first sub-pixel <NUM>, the second sub-pixel <NUM> and the third sub-pixel <NUM> further includes a color conversion layer <NUM> on a side of the cathode <NUM> away from the light-emitting functional layer <NUM>; the light-emitting functional layer <NUM> emits blue light; the color conversion layer <NUM> is used for performing a color conversion of the blue light.

In some embodiments, referring to <FIG>, the color conversion layer <NUM> includes a first color conversion unit <NUM>, a second color conversion unit <NUM>, and a first transmission unit <NUM>; an orthographic projection of the first color conversion unit <NUM> on the base substrate <NUM> covers the orthographic projection of the second sub-pixel <NUM> on the base substrate <NUM>; an orthographic projection of the second color conversion unit <NUM> on the base substrate <NUM> covers the orthographic projection of the third sub-pixel on the base substrate <NUM>; and an orthographic projection of the first transmission unit <NUM> on the base substrate <NUM> covers the orthographic projection of the first sub-pixel <NUM> on the base substrate <NUM>. The first color conversion unit <NUM> converts the blue light emitted by the light-emitting functional layer <NUM> in the corresponding sub-pixel into red light by exciting the quantum dots therein; the second color conversion unit <NUM> converts the blue light emitted by the light-emitting functional layer <NUM> in the corresponding sub-pixel into green light by exciting the quantum dots therein; the first transmission unit <NUM> further scatters the blue light emitted by the light-emitting functional layer <NUM> in the corresponding sub-pixel by the scattering particles therein.

In some embodiments, referring to <FIG>, the display substrate further includes a bank <NUM> and a first black matrix <NUM>, the bank <NUM> and the first black matrix <NUM> are on a side of the pixel defining layer <NUM> away from the base substrate <NUM>, and the first black matrix <NUM> and the bank <NUM> are sequentially arranged away from the pixel defining layer <NUM>; each of orthographic projections of the bank <NUM> and the first black matrix <NUM> on the base substrate <NUM> at least partially overlaps an orthographic projection of the pixel defining layer <NUM> on the base substrate <NUM>. The bank <NUM> serve to separate different portions of the color conversion layer <NUM> corresponding to the sub-pixels of different colors from each other, so that crosstalk between light of adjacent sub-pixels when the color conversion layer <NUM> performs color conversion may be avoided. The first black matrix <NUM> also serves to block light emitted from a sub-pixel from irradiating onto a corresponding portion of the color conversion layer <NUM> of an adjacent sub-pixel, thereby avoiding crosstalk between light of two adjacent sub-pixels when the color conversion layer <NUM> performs color conversion.

In some embodiments, referring to <FIG>, each of the first sub-pixel <NUM>, the second sub-pixel <NUM>, and the third sub-pixel <NUM> further includes a color filter layer <NUM> on a side of the color conversion layer <NUM> away from the base substrate <NUM>; the color filter layer <NUM> includes a first color filter <NUM>, a second color filter <NUM> and a third color filter <NUM>; an orthographic projection of the first color filter <NUM> on the base substrate <NUM> is within the orthographic projection of the first color conversion unit <NUM> on the base substrate <NUM>; an orthographic projection of the second color filter <NUM> on the base substrate <NUM> is within the orthographic projection of the second color conversion unit <NUM> on the base substrate <NUM>; an orthographic projection of the third color filter <NUM> on the base substrate <NUM> is within the orthographic projection of the first transmission unit <NUM> on the base substrate <NUM>. The color of the first color filter <NUM> is the same as the color after conversion of the first color conversion unit <NUM>; the color of the second color filter <NUM> is the same as the color after conversion of the second color conversion unit <NUM>; the color of the third color filter <NUM> is the same as the color of light emitted by the light-emitting functional layer of the first sub-pixel <NUM>; and the color filter layer <NUM> may filter the light which is not converted after the conversion of the color conversion layer <NUM>, so that a purity of the display color of each sub-pixel is further improved, and further, the display effect is improved.

In some embodiments, based on the structure of the display substrate in <FIG>, a light-emitting principle of each sub-pixel is as follows: a battery or power supply applies a voltage across the anode <NUM> and the cathode <NUM> of the sub-pixel; current flows from the cathode <NUM> to the anode <NUM>, and passes through the light-emitting functional layer <NUM>; the light-emitting functional layer <NUM> includes an organic molecule emission layer and an organic molecule transport layer; the cathode <NUM> outputs electrons to the organic molecule emission layer in the light-emitting functional layer <NUM>; the anode <NUM> absorbs electrons transferred from the organic molecule transport layer in the light-emitting functional layer <NUM> (here, it may be considered that the anode outputs holes to the organic molecule transport layer, the two descriptions have a same effect); at an interface between the emission layer and the transport layer, electrons are combined with holes; when an electron encounters a hole, the electron fills the hole (the electron falls to a certain energy level in the atom from which an electron was missing); when this occurs, the electrons release energy in a form of photons; the light-emitting functional layer <NUM> emits light. In this embodiment, the light-emitting functional layer <NUM> of each sub-pixel emits blue light. In the display substrate of this embodiment, the light-emitting functional layer <NUM> adopts an organic blue light-emitting material laid in a whole layer, and the size of the pattern of the anode of each sub-pixel determines the size of the area of an aperture of each sub-pixel; after passing through the color conversion layer <NUM> in the pixel, the blue light is converted into other colors, such as red, green and blue colors; the color conversion layer <NUM> is made of a quantum dot material, and the quantum dots are semiconductor nano-crystals and may generate pure monochromatic red light, green light and blue light; thereby enabling a color display of the display substrate. The color filter layer <NUM> is arranged on a side of the color conversion layer <NUM> away from the base substrate <NUM>, so that the purity of the display color of each sub-pixel may be further improved, and the display effect may be improved.

In some embodiments, referring to <FIG>, the display substrate further includes a second black matrix <NUM> on a side of the bank <NUM> away from the base substrate <NUM>; and an orthographic projection of the second black matrix <NUM> on the base substrate <NUM> is within the orthographic projection of the first black matrix <NUM> on the base substrate <NUM>. The second black matrix <NUM> separates the portions of the color filter layer <NUM> with different colors from each other on one hand, and on the other hand may prevent the light emitted by a sub-pixel from irradiating onto a corresponding portion of color filter layer <NUM> of an adjacent sub-pixel after the light passing through a corresponding portion of color conversion layer <NUM> of the adjacent sub-pixel, so as to avoid crosstalk between the light of the two adjacent sub-pixels; the orthographic projection of the second black matrix <NUM> on the base substrate <NUM> is within the orthographic projection of the first black matrix <NUM> on the base substrate <NUM>, so that an optical crosstalk between the two adjacent sub-pixels may be better avoided, and the display effect may be improved.

In some embodiments, referring to <FIG>, the orthographic projections of the plurality of pixel circuits on the base substrate have an equal area. <FIG> is a pattern of a conductive layer on a base substrate in the plurality of pixel circuits, the pattern of the conductive layer includes a pattern for forming one plate of a capacitor in a pixel circuit, a pattern of some connecting vias, and a pattern of a signal trace. <FIG> is a pattern of an active layer of a transistor on a side of the pattern of the conductive layer of <FIG> away from the base substrate in the plurality of pixel circuits. <FIG> is a pattern of vias in an insulating layer (e.g., a gate insulating layer, an interlayer dielectric layer, etc.) on a side of the pattern of the active layer away from the base substrate in the plurality of pixel circuits. <FIG> is a pattern of a source/drain electrode layer in the transistor, the second conductive layer, and other conductive structures on a side of the insulating layer away from the base substrate in the plurality of pixel circuits. <FIG> is a top view of the plurality of pixel circuits after the film layers in <FIG>, <FIG> are sequentially stacked together. In this embodiment, the design and arrangement of the pixel circuits are not changed.

In some embodiments, referring to <FIG>, <FIG> is a pattern of an anode, a first conductive layer and a via in an insulating layer (e.g., a passivation layer, a planarization layer, etc.) on a side of the pattern of the source/drain electrode layer in the transistor away from the base substrate, in the display substrate. <FIG> is a pattern of an opening formed in a pixel defining layer on a side of the anode away from the base substrate in the display substrate, each of orthographic projections of the sub-pixel and the first conductive layer on the base substrate is in an orthographic projection of the opening on the base substrate. <FIG> is a pattern of a bank and a first black matrix on a side of the pixel defining layer away from the base substrate in the display substrate. <FIG> is a pattern of a color conversion layer in regions divided by the bank in the display substrate. <FIG> is a top view of the display substrate after the film layers in <FIG> and <FIG> are sequentially stacked together. In this embodiment, the arrangement of the sub-pixels is changed, such that the orthographic projections of the first via <NUM> and the second via <NUM> on the base substrate are located in the region between the orthographic projections of the first sub-pixel <NUM> and the second sub-pixel <NUM> on the base substrate, thereby eliminating or avoiding an optical crosstalk between the first sub-pixel <NUM> and the second sub-pixel <NUM> adjacent to each other. <FIG> and <FIG> are patterns of the film layers in the display substrate corresponding to the arrangement of sub-pixels in <FIG>.

In some embodiments, referring to <FIG>, each of the orthographic projections of the first sub-pixel, the second sub-pixel and the third sub-pixel on the base substrate and the orthographic projection of the pixel circuit electrically connected to this sub-pixel on the base substrate are at least partially non-overlapping with each other. In the related art, the orthographic projections of the sub-pixels are in a one-to-one correspondence with the orthographic projections of the pixel circuits electrically connected to the sub-pixels on the base substrate, and overlapping regions between the orthographic projections of the respecitve sub-pixels and the corresponding pixel circuits are regular and consistent. In this embodiment, the orthographic projections of the sub-pixels are not in a one-to-one correspondence with the orthographic projections of the pixel circuits electrically connected to the sub-pixels on the base substrate, and overlapping regions between the orthographic projections of the resepctive sub-pixels and the correspondign pixel circuits are irregular and inconsistent, that is, the orthographic projections of the sub-pixels are in a random correspondence with the orthographic projections of the pixel circuits. Thus, on one hand, the arrangement of the sub-pixels is changed to enable the first via <NUM> and the second via <NUM> to be located in the regions between the first sub-pixel <NUM>, the second sub-pixel <NUM> and the third sub-pixel <NUM>, so that the distance between the first sub-pixel <NUM> and the second sub-pixel <NUM> and the distance between the first sub-pixel <NUM> and the third sub-pixel <NUM> are increased, and further, an optical crosstalk between the first sub-pixel <NUM> and the second sub-pixel <NUM> and an optical crosstalk between the first sub-pixel <NUM> and the third sub-pixel <NUM> may be eliminated or avoided; on the other hand, a space may be more effectively and reasonably utilized, so that the aperture ratio of the sub-pixels may not be reduced due to changing the arrangement of the sub-pixels, and the display resolution of the display substrate may not be reduced.

In some embodiments, <FIG> and <FIG> are patterns of the film layers in a display substrate corresponding to the arrangement of sub-pixels of <FIG>. <FIG> is a pattern of a conductive layer on a base substrate in a plurality of pixel circuits, the pattern of the conductive layer includes a pattern for forming one plate of a capacitor in the pixel circuit, a pattern of some connecting vias and a pattern of a signal trace. <FIG> is a pattern of an active layer of a transistor on a side of the pattern of the conductive layer in <FIG> away from the base substrate in the plurality of pixel circuits. <FIG> is a pattern of vias in an insulating layer (e.g., a gate insulating layer, an interlayer dielectric layer, etc.) on a side of the pattern of the active layer away from the base substrate in a plurality of pixel circuits. <FIG> is a pattern of the source/drain electrode layer in the transistor, a second conductive layer, and other conductive structures on the side of the insulating layer away from the base substrate in the plurality of pixel circuits.

In some embodiments, referring to <FIG>, <FIG> is a pattern of an anode, a first conductive layer, and a via in an insulating layer (e.g., a passivation layer, a planarization layer, etc.) on a side of the pattern of the source/drain electrode layer in the transistor away from the base substrate in the display substrate. <FIG> is a pattern of an opening formed in a pixel defining layer on a side of an anode away from the base substrate in the display substrate, each of orthographic projections of the sub-pixel and the first conductive layer on the base substrate is in an orthographic projection of the opening on the base substrate. <FIG> is a pattern of a bank and a first black matrix on a side of the pixel defining layer away from the base substrate in the display substrate. <FIG> is a pattern of a color conversion layer in regions divided by the bank in the display substrate. <FIG> is a top view of the display substrate after the film layers in <FIG> and <FIG> are sequentially stacked together. In this embodiment, the arrangement of the sub-pixels is changed, such that the orthographic projections of the first via <NUM> and the second via <NUM> on the base substrate are located in the regions between the orthographic projections of the first sub-pixel <NUM>, the second sub-pixel <NUM> and the third sub-pixel <NUM> on the base substrate, thereby eliminating or avoiding an optical crosstalk between the first sub-pixel <NUM> and the second sub-pixel <NUM> adjacent to each other and an optical crosstalk between the first sub-pixel <NUM> and the third sub-pixel <NUM> adjacent to each other.

In some embodiments, referring to <FIG>, the display substrate further includes a first encapsulation layer <NUM>, a second encapsulation layer <NUM>, and an anti-reflection layer <NUM>; the first encapsulation layer <NUM> is on a side of the cathode <NUM> away from the base substrate <NUM> and on a side of the color conversion layer <NUM> close to the cathode <NUM>; the second encapsulation layer <NUM> is on a side of the color conversion layer <NUM> away from the base substrate <NUM> and on a side of the color filter layer <NUM> close to the color conversion layer <NUM>; the anti-reflection layer <NUM> is on a side of the color filter layer <NUM> away from the base substrate <NUM>. The first encapsulation layer <NUM> may encapsulate the light-emitting functional layer <NUM> and the cathode <NUM> of the sub-pixel, and prevent external moisture and oxygen from entering the light-emitting functional layer <NUM> to damage the light-emitting functional layer <NUM>. The second encapsulation layer <NUM> may encapsulate the color conversion layer <NUM> to protect the color conversion layer <NUM>, and form multiple protection for the light-emitting functional layer <NUM> and the cathode <NUM> of the sub-pixel. The anti-reflection layer <NUM> may be a polarizer, and may prevent external light irradiated onto the display surface of the display substrate from being reflected, thereby ensuring that the display substrate may display normally.

In some embodiments, the first encapsulation layer <NUM> may be made of a lamination of an inorganic film layer, an organic film layer, and an inorganic film layer. The second encapsulation layer <NUM> may be made of an inorganic film layer.

In a second aspect, an embodiment of the present disclosure further provides a display panel, which includes the display substrate in the foregoing embodiment.

In a third aspect, an embodiment of the present disclosure further provides a display apparatus, which includes the display panel in the foregoing embodiment.

Claim 1:
A display substrate, comprising:
a base substrate (<NUM>);
a plurality of pixel circuits on the base substrate (<NUM>); and
a plurality of pixels (<NUM>) in an array and on a side of the plurality of pixel circuits away from the base substrate (<NUM>);
wherein each of the plurality of pixels (<NUM>) comprises a first sub-pixel (<NUM>), a second sub-pixel (<NUM>) and a third sub-pixel (<NUM>); orthographic projections of the first sub-pixel (<NUM>), the second sub-pixel (<NUM>) and the third sub-pixel (<NUM>) on the base substrate (<NUM>) do not overlap with each other; the first sub-pixel (<NUM>), the second sub-pixel (<NUM>) and the third sub-pixel (<NUM>) are electrically connected to corresponding ones of the plurality of pixel circuits in a one-to-one correspondence;
the first sub-pixel (<NUM>) and the second sub-pixel (<NUM>) are separated from each other by a first distance in a first direction (Y), and a first via (<NUM>) is arranged in the first distance;
the first sub-pixel (<NUM>) and the third sub-pixel (<NUM>) are separated from each other by a second distance in the first direction (Y), and a first via (<NUM>) is arranged in the second distance; and
the second sub-pixel (<NUM>) and the third sub-pixel (<NUM>) are separated from each other by a third distance in the first direction (Y),
wherein each of the plurality of pixel circuits comprises a driving transistor (<NUM>) and an insulating layer (<NUM>); each of the first sub-pixel (<NUM>), the second sub-pixel (<NUM>) and the third sub-pixel (<NUM>) comprises an anode (<NUM>); the driving transistor (<NUM>), the insulating layer (<NUM>) and the anode (<NUM>) are sequentially arranged away from the base substrate (<NUM>);
wherein the first via (<NUM>) is formed in the insulating layer (<NUM>), and configured to connect the anode (<NUM>) of each of the first sub-pixel (<NUM>), the second sub-pixel (<NUM>) and the third sub-pixel (<NUM>) to the first electrode (<NUM>) of the driving transistor (<NUM>) in a respective one of plurality of pixel circuits,
characterized in that the first vias (<NUM>) corresponding to the first sub-pixel (<NUM>), the second sub-pixel (<NUM>) and the third sub-pixel (<NUM>) in a same pixel (<NUM>) are on a same line extending in a second direction (X), wherein the first direction (Y) is perpendicular to the second direction (X).