Light-emitting substrate, display device, and method for driving the light-emitting substrate

Abstract

A light-emitting substrate is provided. The light-emitting substrate includes a plurality of light-emitting control units (CU(m,n)), which are arranged in M ​​rows and N columns, M is an integer greater than or equal to one, and N is an integer greater than or equal to one, wherein a corresponding one of the plurality of light-emitting control units (CU(m,n)) includes a plurality of light-emitting elements arranged in J rows and I columns, J is an integer greater than or equal to one, I is an integer greater than or equal to one, and the i-th column of the I columns of light-emitting elements includes J rows of light-emitting elements, 1≤i≤I; (M×J) first voltage signal lines (Pm‑1, ..., Pm‑J); and (M×J) groups of second voltage signal lines (Ghm‑1, ..., Ghm‑J).

Description

Technical Field

[0001] The present invention relates to the field of display technology, and more particularly, to a light-emitting substrate, a display device, and a method for driving the light-emitting substrate. Background Art

[0002] A front-lit reflective display is a display that is illuminated by a front light. Typically, a front-lit reflective display is a liquid crystal display that would otherwise be seen in ambient light. Having a front light improves display performance. Summary of the invention

[0003] In one aspect, the present disclosure provides a light-emitting substrate, comprising: a plurality of light-emitting control units, which are arranged into M rows and N columns, M is an integer greater than or equal to one, and N is an integer greater than or equal to one, wherein a corresponding light-emitting control unit among the plurality of light-emitting control units comprises a plurality of light-emitting elements arranged into J rows and I columns, J is an integer greater than or equal to one, and I is an integer greater than or equal to one, and the i-th column among the I columns of light-emitting elements comprises J rows of light-emitting elements, 1≤i≤I; (M×J) first voltage signal lines; and (M×J) groups of second voltage signal lines; wherein the first ends of the light-emitting elements in the corresponding rows of light-emitting elements are electrically connected to the corresponding first voltage signal lines among the (M×J) first voltage signal lines; and the second ends of the light-emitting elements in the corresponding rows of light-emitting elements are respectively connected to I second voltage signal lines in the corresponding groups of second voltage signal lines among the (M×J) groups of second voltage signal lines.

[0004] Optionally, the corresponding light-emitting control unit among multiple light-emitting control units includes Q groups of light-emitting elements, Q is an integer greater than or equal to one; the corresponding group among the Q groups of light-emitting elements includes K columns of light-emitting elements, K is an integer greater than or equal to one; the kth column among the K columns of light-emitting elements includes J rows of light-emitting elements, 1≤k≤K, and I=K×Q; the corresponding group of second voltage signal lines includes Q subgroups of second voltage signal lines, and the corresponding subgroup among the Q subgroups of second voltage signal lines includes K second voltage signal lines; and among the corresponding rows of light-emitting elements, the second ends of the light-emitting elements in the kth column in the qth group of the Q groups of light-emitting elements from the N light-emitting control units in the same row are electrically connected to the kth second voltage signal line among the K second voltage signal lines in the qth subgroup of the second voltage signal lines of the Q subgroups in the corresponding group of second voltage signal lines, 1≤q≤Q.

[0005] Optionally, the (M×J) groups of second voltage signal lines include M-level second voltage signal lines; the corresponding levels among the M-level second voltage signal lines include J groups of second voltage signal lines; the corresponding groups among the J groups of second voltage signal lines include Q sub-groups of second voltage signal lines; the corresponding sub-groups among the Q sub-groups of second voltage signal lines include K second voltage signal lines; and the second ends of the light-emitting elements in the k-th group in the q-th column of the Q groups of light-emitting elements from the N light-emitting control units in the m-th row of the multiple light-emitting control units are respectively electrically connected to the k-th second voltage signal line in the q-th sub-group of the K second voltage signal lines in the j-th group of the Q sub-groups of second voltage signal lines in the m-th level of the M-level second voltage signal lines.

[0006] Optionally, the light emitting substrate further includes I×J second voltage signal supply lines; and the I second voltage signal lines in the corresponding group of second voltage signal lines are respectively connected to a group of I second voltage signal supply lines.

[0007] Optionally, I×J second voltage signal supply lines are grouped into Q groups of second voltage signal supply lines, Q is an integer greater than or equal to one; a corresponding group in the Q groups of second voltage signal supply lines includes K sub-groups of second voltage signal supply lines, K is an integer greater than or equal to one; and a corresponding sub-group in the K sub-groups of second voltage signal supply lines includes J second voltage signal supply lines.

[0008] Optionally, the (M×J) groups of second voltage signal lines include M-level second voltage signal lines; the corresponding levels among the M-level second voltage signal lines include J groups of second voltage signal lines; the corresponding groups among the J groups of second voltage signal lines include Q sub-groups of second voltage signal lines; the corresponding sub-groups among the Q sub-groups of second voltage signal lines include K second voltage signal lines; and the kth second voltage signal line among the K second voltage signal lines in the qth sub-group of the Q sub-groups in the j-th group of the J groups of second voltage signal lines among the M-level second voltage signal lines are electrically connected to the jth second voltage signal line among the J second voltage signal lines in the kth sub-group of the second voltage signal lines in the qth group of the Q groups of second voltage signal supply lines, respectively.

[0009] Optionally, the corresponding light-emitting control unit among the multiple light-emitting control units includes Q groups of light-emitting elements, Q is an integer greater than or equal to one; the corresponding group among the Q groups of light-emitting elements includes K columns of light-emitting elements, K is an integer greater than or equal to one; the kth column among the K columns of light-emitting elements includes J rows of light-emitting elements, 1≤k≤K, and I=K×Q; and the kth second voltage signal line among the K second voltage signal lines among the qth subgroup of the second voltage signal lines in the jth group of the Q subgroups in the M-level second voltage signal lines, and the jth second voltage signal supply line among the J second voltage signal lines among the kth subgroup of the second voltage signal lines in the qth group of the K subgroups in the Q group of second voltage signal supply lines are electrically connected to the second ends of the light-emitting elements in the kth column in the qth group of the Q groups of light-emitting elements from the multiple light-emitting control units of M rows and N columns respectively.

[0010] Optionally, the J-row light-emitting elements in the k-th column in the K-column light-emitting elements include light-emitting elements of the k-th color among K different colors; the light-emitting elements in the (I / K)-th column in the I-column light-emitting elements have the k-th color; and the light-emitting elements in the same column in the I-column light-emitting elements have the same color.

[0011] Optionally, the color patterns in the Q group of light emitting elements are the same.

[0012] Optionally, K=3.

[0013] Optionally, the color patterns in the plurality of light emitting control units are the same.

[0014] Optionally, the plurality of light emitting elements are micro light emitting diodes.

[0015] Optionally, the light emitting substrate comprises: a base substrate; a first metal layer and a second metal layer on the base substrate; and at least one insulating layer, wherein the at least one insulating layer separates the first metal layer from the second metal layer.

[0016] Optionally, the light-emitting substrate also includes a plurality of signal lines; wherein the plurality of signal lines include a plurality of signal lines extending along a first direction and a plurality of signal lines extending along a second direction, the second direction being different from the first direction; the plurality of signal lines extending along the first direction are part of one of the first metal layer and the second metal layer; and the plurality of signal lines extending along the second direction are part of the other of the first metal layer and the second metal layer.

[0017] Optionally, the plurality of signal lines extending along the first direction include second voltage signal lines; and the plurality of signal lines extending along the second direction include first voltage signal lines.

[0018] Optionally, at least one insulating layer comprises a resin layer.

[0019] Optionally, at least one insulating layer further includes a first passivation layer between the resin layer and the first metal layer, and a second passivation layer between the resin layer and the second metal layer.

[0020] Optionally, the light emitting substrate further comprises a third passivation layer located on a side of the second metal layer away from the base substrate; and at least two through holes penetrating the third passivation layer and partially exposing a surface of the second metal layer.

[0021] Optionally, each of the first metal layer and the second metal layer includes copper; and the second metal layer further includes nickel gold on the surface exposed by the at least two through-hole portions.

[0022] Optionally, each of the first metal layer and the second metal layer includes copper; and the second metal layer further includes indium tin oxide on the surface exposed by the at least two through-hole portions.

[0023] Optionally, the resin layer is confined to the micro LED bonding area.

[0024] Optionally, the light-emitting substrate further includes at least one gas release through hole.

[0025] Optionally, at least one gas release through hole penetrates the second passivation layer and the third passivation layer.

[0026] Optionally, the light emitting substrate includes a plurality of gas release through holes arranged in an array.

[0027] Optionally, the light emitting substrate further includes a first group of pads and a second group of pads; wherein the first group of pads includes a first pad and a second pad; and the second group of pads includes a third pad and a fourth pad.

[0028] On the other hand, the present disclosure provides a display device, comprising a light-emitting substrate described herein or manufactured by the method described herein, a reflective display panel, and an integrated circuit connected to the reflective display panel; wherein the light-emitting substrate is located on the display side of the reflective display panel.

[0029] Optionally, the reflective display panel includes a plurality of first signal lines and a plurality of second signal lines; the light-emitting substrate includes a plurality of signal lines; the plurality of signal lines include a plurality of signal lines extending along a first direction and a plurality of signal lines extending along a second direction, the second direction being different from the first direction; the plurality of signal lines extending along the first direction cross the plurality of first signal lines at an angle greater than zero and less than 20 degrees, and / or the plurality of signal lines extending along the second direction cross the plurality of second signal lines at an angle greater than zero and less than 20 degrees; and the plurality of first signal lines are a plurality of data lines, and the plurality of second signal lines are a plurality of gate lines.

[0030] On the other hand, the present disclosure provides a method for driving a light-emitting substrate, wherein the light-emitting substrate includes a plurality of light-emitting control units, which are arranged into M rows and N columns, M is an integer greater than or equal to one, and N is an integer greater than or equal to one, wherein a corresponding light-emitting control unit among the plurality of light-emitting control units includes a plurality of light-emitting elements arranged into J rows and I columns, J is an integer greater than or equal to one, I is an integer greater than or equal to one, and the i-th column among the I-column light-emitting elements includes J rows of light-emitting elements, 1≤i≤I; the method includes: electrically connecting a first end of a light-emitting element in a corresponding row of light-emitting elements to a corresponding first voltage signal line among (M×J) first voltage signal lines; electrically connecting a second end of a light-emitting element in a corresponding row of light-emitting elements to I second voltage signal lines among a corresponding group of second voltage signal lines among (M×J) groups of second voltage signal lines; providing a first voltage signal to the first end; and providing a second voltage signal to a corresponding one of the second ends.

[0031] Optionally, the corresponding light-emitting control unit among multiple light-emitting control units includes Q groups of light-emitting elements, the corresponding group among the Q groups of light-emitting elements includes K columns of light-emitting elements, the corresponding group of second voltage signal lines includes Q subgroups of second voltage signal lines, the corresponding subgroup among the Q subgroups of second voltage signal lines includes K second voltage signal lines, Q is an integer greater than or equal to one, and K is an integer greater than or equal to one; the method also includes: forming J rows of light-emitting elements in the kth column among the K columns of light-emitting elements, 1≤k≤K, and I=K×Q; in the corresponding row of light-emitting elements, the second ends of the light-emitting elements in the kth column in the qth group of the Q groups of light-emitting elements of N light-emitting control units from the same row are electrically connected to the kth second voltage signal line among the K second voltage signal lines in the qth subgroup of the second voltage signal lines of the Q subgroups of the corresponding group of second voltage signal lines, 1≤q≤Q, and providing the second voltage signal to the K second voltage signal lines in sequence.

[0032] Optionally, the (M×J) group of second voltage signal lines includes M-level second voltage signal lines; the corresponding level among the M-level second voltage signal lines includes J groups of second voltage signal lines; the corresponding group among the J groups of second voltage signal lines includes Q sub-groups of second voltage signal lines; the corresponding sub-group among the Q sub-groups of second voltage signal lines includes K second voltage signal lines; and the method also includes: electrically connecting the second ends of the light-emitting elements in the k-th group among the Q groups of light-emitting elements from the N light-emitting control units in the m-th row of the multiple light-emitting control units to the k-th second voltage signal line among the q-th sub-group of the K second voltage signal lines in the j-th group of the Q sub-groups of second voltage signal lines in the m-th level of the M-level second voltage signal lines; and sequentially providing the second voltage signal to the K second voltage signal lines in the q-th sub-group of the second voltage signal lines in the j-th group of the J groups of second voltage signal lines in the m-th level of the M-level second voltage signal lines.

[0033] Optionally, the method also includes: respectively connecting the I second voltage signal lines in the corresponding group of second voltage signal lines to I second voltage signal supply lines in I×J second voltage signal supply lines; and respectively providing second voltage signals from the I second voltage signal supply lines to the I second voltage signal lines in the corresponding group of second voltage signal lines.

[0034] Optionally, I×J second voltage signal supply lines are grouped into Q groups of second voltage signal supply lines, Q is an integer greater than or equal to one; the corresponding group in the Q groups of second voltage signal supply lines includes K sub-groups of second voltage signal supply lines, K is an integer greater than or equal to one; the corresponding sub-group in the K sub-groups of second voltage signal supply lines includes J second voltage signal supply lines; the method also includes: providing the second voltage signal to the K sub-groups of second voltage signal supply lines one by one and sequentially.

[0035] On the other hand, the present disclosure provides a method for manufacturing a light-emitting substrate, comprising: forming a plurality of light-emitting control units arranged in M ​​rows and N columns, M is an integer greater than or equal to one, and N is an integer greater than or equal to one, wherein a corresponding one of the plurality of light-emitting control units includes a plurality of light-emitting elements arranged in J rows and I columns, J is an integer greater than or equal to one, and I is an integer greater than or equal to one; the i-th column of the I-column light-emitting elements includes the J-row light-emitting elements, 1≤i≤I; forming (M×J) first voltage signal lines; and forming (M×J) groups of second voltage signal lines; wherein forming the plurality of light-emitting control units comprises: transferring micro light-emitting diodes to a backplane, in which the (M×J) first voltage signal lines and the (M×J) groups of second voltage signal lines are formed; electrically connecting the first end of the micro light-emitting diode in the corresponding row of light-emitting elements to the corresponding first voltage signal lines in the (M×J) first voltage signal lines; and electrically connecting the second end of the micro light-emitting diode in the corresponding row of light-emitting elements to I second voltage signal lines in the corresponding group of second voltage signal lines in the (M×J) groups of second voltage signal lines.

[0036] Optionally, before transferring the micro-light-emitting diode to the backplane, the method also includes at least one of the following steps: measuring the resistance between two opposite ends of the corresponding first voltage signal line; measuring the resistance between two opposite ends of the corresponding second voltage signal line; or measuring the resistance between the corresponding end of the corresponding first voltage signal line and the corresponding end of the corresponding second voltage signal line. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] According to various disclosed embodiments, the following drawings are examples only for illustration purposes and are not intended to limit the scope of the present invention.

[0038] Figure 1 is a schematic diagram showing the structure of a light-emitting substrate in some embodiments of the present disclosure.

[0039] Figure 2 is a schematic diagram showing the structure of a light emitting control unit in a light emitting substrate according to some embodiments of the present disclosure.

[0040] Figure 3 is a schematic diagram showing the structure of a light-emitting substrate in some embodiments of the present disclosure.

[0041] Figure 4 is a schematic diagram showing the structure of a light emitting control unit in a light emitting substrate according to some embodiments of the present disclosure.

[0042] Figure 5is a schematic diagram showing the structure of a plurality of first voltage signal lines, a plurality of second voltage signal lines, and a plurality of second voltage supply lines in a light emitting substrate according to some embodiments of the present disclosure.

[0043] Figure 6 yes Figure 5 Magnified view of the magnified area in .

[0044] Figure 7 Schematic diagram showing the structure of a backplane for bonding a micro LED to a light-emitting substrate according to some embodiments of the present disclosure.

[0045] Figure 8 Schematic diagram showing the structure of a backplane for bonding a micro LED to a light-emitting substrate according to some embodiments of the present disclosure.

[0046] Fig. 9 Schematic diagram showing the structure of a backplane for bonding a micro LED to a light-emitting substrate according to some embodiments of the present disclosure.

[0047] Fig.10 It is a cross-sectional view intersecting with the gas release through hole.

[0048] Fig.11 is an enlarged view of an LED bonding point in a light emitting substrate according to some embodiments of the present disclosure.

[0049] Fig.12 The working principle of the reflective display device in some embodiments of the present disclosure is shown.

[0050] Fig.13 is a schematic diagram showing the structure of a light-emitting substrate before a micro light-emitting diode is transferred to the light-emitting substrate according to some embodiments of the present disclosure. DETAILED DESCRIPTION

[0051] The present disclosure will now be described in more detail with reference to the following examples. It should be noted that the following description of some of the embodiments presented herein is for illustration and description purposes only. It is not intended to be exhaustive or limited to the precise form disclosed.

[0052] The present disclosure provides, in particular, a light-emitting substrate, a display device, and a method for driving a light-emitting substrate, which substantially eliminates one or more problems caused by the limitations and disadvantages of the prior art. In one aspect, the present disclosure provides a light-emitting substrate. In some embodiments, the light-emitting substrate includes: a plurality of light-emitting control units arranged in M ​​rows and N columns, M is an integer greater than or equal to one, and N is an integer greater than or equal to one, wherein a corresponding light-emitting control unit in the plurality of light-emitting control units includes a plurality of light-emitting elements arranged in J rows and I columns, J is an integer greater than or equal to one, and I is an integer greater than or equal to one, and the i-th column of the I-column light-emitting elements includes J rows of light-emitting elements, 1≤i≤I; (M×J) first voltage signal lines; and (M×J) groups of second voltage signal lines. Optionally, the first end of the light-emitting element in the corresponding row of light-emitting elements is electrically connected to the corresponding first voltage signal line in the (M×J) first voltage signal lines. Optionally, the second end of the light-emitting element in the corresponding row of light-emitting elements is respectively connected to I second voltage signal lines in the corresponding group of second voltage signal lines in the (M×J) groups of second voltage signal lines.

[0053] Figure 1 Schematic diagram showing the structure of a light-emitting substrate in some embodiments of the present disclosure. Figure 1 In some embodiments, the light-emitting substrate includes a plurality of light-emitting control units CU(m,n) arranged in M ​​rows and N columns. M is an integer greater than or equal to one, such as 1, 2, greater than 5, greater than 10, greater than 50, greater than 100. N is an integer greater than or equal to one, such as 1, 2, greater than 5, greater than 10, greater than 50, greater than 100. Optionally, 1≤m≤M, 1≤n≤N. As used herein, a row of light-emitting control units is along a row direction, and a column of light-emitting control units is along a column direction, and the row direction and the column direction are two non-parallel directions, for example, the row direction and the column direction intersect each other. Optionally, the row direction and the column direction are perpendicular to each other. Optionally, the row direction and the column direction intersect each other at an inclination angle other than 90 degrees.

[0054] In some embodiments, the total number of light emitting control units in the light emitting substrate is one. In some embodiments, the total number of light emitting control units in the light emitting substrate is greater than one.

[0055] Figure 2 Schematic diagram showing the structure of a light emitting control unit in a light emitting substrate according to some embodiments of the present disclosure. Figure 2, which depicts a corresponding one of a plurality of light emitting control units CU (m, n). In some embodiments, a corresponding one of a plurality of light emitting control units CU (m, n) includes a plurality of light emitting elements arranged in J rows and I columns. J is an integer greater than or equal to one, such as 1, 2, greater than 5, greater than 10, greater than 50, greater than 100. I is an integer greater than or equal to one, such as 1, 2, greater than 5, greater than 10, greater than 50, greater than 100. In some embodiments, the light emitting element is, for example, a micro light emitting diode (micro LED) or a micro light emitting diode (micro LED). Displays based on micro LED or micro LED have the advantages of high brightness, high contrast, fast response, and low power consumption.

[0056] In some embodiments, the i-th column cni in the I-column light-emitting element comprises J rows of light-emitting elements, 1≤i≤I. For example, the i-th column cni comprises the light-emitting elements in rm1, rm2, ..., rmj, rm(j+1), ..., rm(J-1), and rmJ. Figure 2 As shown, in one example, the plurality of light-emitting elements include light-emitting elements of different colors, for example, a corresponding light-emitting element sp1 of a first color, a corresponding light-emitting element sp2 of a second color, and a corresponding light-emitting element sp3 of a third color. In another example, the light-emitting elements in the corresponding columns of a corresponding one of the plurality of light-emitting control units CU (m, n) have the same color. For example, the light-emitting elements in column cn1 are all light-emitting elements of the first color, the light-emitting elements in column cni are all light-emitting elements of the second color, and the light-emitting elements in column cnI are all light-emitting elements of the third color. In another example, the corresponding rows of the corresponding one of the plurality of light-emitting control units CU (m, n) include light-emitting elements arranged in a repeated color pattern. For example, the light-emitting elements in row rmj include a repeated pattern of a corresponding light-emitting element sp1 of a first color, a corresponding light-emitting element sp2 of a second color, and a corresponding light-emitting element sp3 of a third color.

[0057] Figure 3 is a schematic diagram showing the structure of a light-emitting substrate in some embodiments of the present disclosure. Figure 4 Schematic diagram showing the structure of a light emitting control unit in a light emitting substrate according to some embodiments of the present disclosure. Figure 3 , the light emitting control units in the first column of N columns (e.g., CU(1,1), ..., CU(m,1), ..., CU(M,1)) and the light emitting control units in the Nth column of N columns (e.g., CU(1,N), ..., CU(m,N), ..., CU(M,N)) are depicted. Figure 4 , a corresponding one of a plurality of light emitting control units CU(m,n) is depicted. In one example, Figure 4The light emitting control unit CU(m,n) depicted in is the light emitting control unit in the first row and the first column, for example CU(1,1).

[0058] refer to Figure 3 and Figure 4 In some embodiments, the light-emitting substrate further includes (M×J) first voltage signal lines, including (P1-1, ..., P1-J), ..., (Pm-1, ..., PmJ), ..., (PM-1, ..., PM-J). The (M×J) first voltage signal lines are configured to provide a first voltage signal (e.g., a positive voltage signal) to, for example, an anode of a light-emitting diode in the light-emitting substrate. Figure 3 and Figure 4 As shown, the first ends of the light emitting elements in the corresponding rows of light emitting elements are electrically connected to the corresponding first voltage signal lines among the (M×J) first voltage signal lines. Figure 3 As shown, the first end of the light emitting element in r11 is electrically connected to P1-1, and the first end of the light emitting element in r1J is electrically connected to P1-J. Each first voltage signal line corresponds to a corresponding row of light emitting elements. Figure 4 In FIG. 1 , J rows of light emitting elements (rm1, ..., rmj, ..., rmJ) are shown, and J first voltage signal lines (Pm-1, ..., Pm-j, ..., Pm-J) are shown, and the J rows of light emitting elements and the J first voltage signal lines have a one-to-one correspondence. Optionally, in Figure 4 , m = 1, and n = 1. The first end T1 of the light emitting element in rm1 is electrically connected to Pm-1, the first end T1 of the light emitting element in rmj is electrically connected to Pm-j, and the first end T1 of the light emitting element in rmJ is electrically connected to Pm-J.

[0059] In some embodiments, the light-emitting substrate further includes (M×J) groups of second voltage signal lines, including (Gh1-1, ..., Gh1-J), ..., (Ghm-1, ...GhmJ), ..., (GhM-1, ..., GhM-J). Optionally, the second terminals T2 of the light-emitting elements in the corresponding rows of light-emitting elements are respectively connected to I second voltage signal lines in the corresponding groups of second voltage signal lines in the (M×J) groups of second voltage signal lines. For example, Figure 3As shown, the second ends of the light-emitting elements in r1J are respectively connected to I second voltage signal lines (Nh1-J-1-1, Nh2-J-1-1, NhK-J-1-1, ..., Nh1-JQ-1, Nh2-JQ-1, NhK-JQ-1) in the Gh1-J group of the (M×J) groups of second voltage signal lines. The second ends of the light-emitting elements in r11 are respectively connected to I second voltage signal lines (Nh1-1-1-1, Nh2-1-1-1, NhK-1-1-1, ..., Nh1-1-Q-1, Nh2-1-Q-1, NhK-1-Q-1) in the Gh1-1 group of the (M×J) groups of second voltage signal lines. Figure 4 , the second end T2 of the light-emitting element in rm1 is respectively connected to the I second voltage signal lines (Nh1-1-1-m, Nh2-1-1-m, NhK-1-1-m, ..., Nh1-1-Qm, Nh2-1-Qm, NhK-1-Qm) in the Ghm-J group of the (M×J) groups of second voltage signal lines; the second end T2 of the light-emitting element in rmj is respectively connected to the I second voltage signal lines ( Nh1-j-1-m, Nh2-j-1-m, NhK-j-1-m, ..., Nh1-jQm, Nh2-jQm, NhK-jQm); the second end T2 of the light-emitting element in rmJ is respectively connected to the I second voltage signal lines (Nh1-J-1-m, Nh2-J-1-m, NhK-J-1-m, ..., Nh1-JQm, Nh2-JQm, NhK-JQm) in the Ghm-J group of (M×J) second voltage signal lines.

[0060] In some embodiments, reference Figure 2 , a corresponding one of the multiple light-emitting control units includes Q groups of light-emitting elements. Q is an integer greater than or equal to one, such as 1, 2, greater than 5, greater than 10, greater than 50, greater than 100. For example, a corresponding one of the multiple light-emitting control units CU (m, n) includes Q groups of light-emitting elements Gs-1, ..., Gs-q, ..., Gs-Q. The corresponding group in the Q groups of light-emitting elements includes K columns of light-emitting elements. For example, Gs-1 includes Cs1-1, Cs2-1, CsK-1, Gs-q includes Cs1-q, Cs2-q, CsK-q, and Gs-Q includes Cs1-Q, Cs2-Q, CsK-Q. K is an integer greater than or equal to one, such as 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 or more. Optionally, K=3 (such as Figure 2In some embodiments, the kth column of K columns of light emitting elements includes J rows of light emitting elements (e.g., rm1, rm2, ..., rmj, rm(j+1), ..., rm(J-1), rmJ). Optionally, 1≤k≤K, and optionally, I=K×Q.

[0061] In some embodiments, the corresponding group of second voltage signal lines includes Q subgroups of second voltage signal lines. Figure 3 , Gh1-1 includes Q subgroups SG1-1-1 to SG1-Q-1; Gh1-J includes Q subgroups SGJ-1-1 to SGJ-Q-1; Ghm-1 includes Q subgroups SG1-1-m to SG1-Qm; Ghm-J includes Q subgroups SGJ-1-m to SGJ-Qm; GhM-1 includes Q subgroups SG1-1-M to SG1-QM; GhM-J includes Q subgroups SGJ-1-M to SGJ-QM. Reference Figure 4 , Ghm-1 includes Q subgroups SG1-1-m, ..., SG1-qm, ..., SG1-Qm; Ghm-j includes Q subgroups SGj-1-m, ..., SGj-qm, ..., SGj-Qm; Ghm-J includes Q subgroups SGJ-1-m, ..., SGJ-qm, ..., SGJ-Qm.

[0062] In some embodiments, a corresponding subgroup of the Q subgroups of second voltage signal lines includes K second voltage signal lines. For example, SG1-1-m includes Nh1-1-1-m, Nh2-1-1-m, NhK1-1-m; SG1-qm includes: Nh1-1-qm, Nh2-1-qm, NhK-1-qm; SG1-Qm includes Nh1-1-Qm, Nh2-1-Qm, NhK-1-Qm. In another example, SGj-1-m includes Nh1-j-1-m, Nh2-1-jm, NhK-1-jm; SGj-qm includes Nh1-jqm, Nh2-jqm, NhK-jqm; SGj-Qm includes Nh1-jQm, Nh2-jQm, NhK-jQm. In another example, SGJ-1-m includes Nh1-J-1-m, Nh2-1-Jm, NhK1-Jm; SGJ-qm includes Nh1-Jqm, Nh2-Jqm, NhKJ-qm; SGJ-Qm includes Nh1-JQm, Nh2-JQm, NhK-JQm.

[0063] In some embodiments, in the corresponding row of light-emitting elements, the second ends of the light-emitting elements in the k-th column of the q-th group of Q groups of light-emitting elements from the N light-emitting control units in the same row are respectively electrically connected to the k-th second voltage signal line of the K-th second voltage signal lines in the q-th subgroup of the second voltage signal lines of the Q subgroups of the corresponding group of second voltage signal lines, 1≤q≤Q. Figure 4 In one example, the second ends of the light emitting elements in the first column of the first group of Q groups of light emitting elements from the N light emitting control units (CU(1,1) to CU(1,N)) in r11 are respectively electrically connected to the first second voltage signal line Nh1-1-1-1 of the K second voltage signal lines (including Nh1-1-1-1, Nh2-1-1-1, NhK-1-1-1) in the first subgroup SG1-1-1 of the second voltage signal lines of the Q subgroups (including SG1-1-1 to SG1-Q-1) in Gh1-1. In another example, the second ends of the light emitting elements in the Kth column of the Qth group of Q groups of light emitting elements from N light emitting control units (CU(1,1) to CU(1,N)) in r11 are respectively electrically connected to the Kth second voltage signal line NhK-1-Q-1 of the K second voltage signal lines (including Nh1-1-Q-1, Nh2-1-Q-1, NhK-1-Q-1) in the Qth subgroup SG1-Q-1 of the second voltage signal lines of Q subgroups (including SG1-1-1 to SG1-Q-1) in Gh1-1. In another example, the second ends of the light emitting elements in the first column of the first group of Q groups of light emitting elements from N light emitting control units (CU(m,1) to CU(m,N)) in rm1 are respectively electrically connected to the first second voltage signal line Nh1-1-1-m of the K second voltage signal lines (including Nh1-1-1-m, Nh2-1-1-m, NhK-1-1-m) in the first subgroup SG1-1-m of the second voltage signal lines of Q subgroups (including SG1-1-m to SG1-Qm) in Ghm-1. In another example, the second ends of the light emitting elements in the Kth column of the Qth group of Q groups of light emitting elements from N light emitting control units (CU(1,1) to CU(1,N)) in rm1 are respectively electrically connected to the Kth second voltage signal line NhK-1-Qm of the K second voltage signal lines (including Nh1-1-Qm, Nh2-1-Qm, NhK-1-Qm) in the Qth subgroup SG1-Qm of the second voltage signal lines of Q subgroups (including SG1-1-m to SG1-Qm) in Ghm-1.

[0064] refer to Figure 3In some embodiments, the (M×J) group of second voltage signal lines includes M-level second voltage signal lines Gh1, ..., Ghm, ..., GhM. The corresponding level in the M level corresponds to the light emitting control unit of the corresponding row in the plurality of light emitting control units. For example, Gh1 is configured to provide the second voltage signal to the first row of light emitting control units CU(1,1), ..., CU(1,N); Ghm is configured to provide the second voltage signal to the m-th row of light emitting control units CU(m,1), ..., CU(m,N); GhM is configured to provide the second voltage signal to the M-th row of light emitting control units CU(M,1), ..., CU(M,N).

[0065] In some embodiments, a corresponding stage in the M stages of second voltage signal lines includes J groups of second voltage signal lines. For example, Gh1 includes J groups of second voltage signal lines: Gh1-1 to Gh1-J; Ghm includes J groups of second voltage signal lines: Ghm-1 to Ghm-J; and GhM includes J groups of second voltage signal lines: GhM-1 to GhM-J.

[0066] In some embodiments, a corresponding group in the J groups of second voltage signal lines includes Q subgroups of second voltage signal lines. For example, Ghm-1 includes Q subgroups of second voltage signal lines: SG1-1-m to SG1-Qm; Ghm-J includes Q subgroups of second voltage signal lines: SGJ-1-m to SGJ-Qm. Figure 4 , Ghm-j includes Q subgroups of second voltage signal lines: SGj-1-m, ..., SGj-qm, ..., SGj-Qm.

[0067] In some embodiments, a corresponding subgroup of the Q subgroups of the second voltage signal lines includes K second voltage signal lines. For example, SG1-1-m includes Nh1-1-1-m, Nh2-1-1-m, NhK-1-1-m; SG1-qm includes Nh1-1-qm, Nh2-1-qm, NhK-1-qm; SG1-Qm includes Nh1-1-Qm, Nh2-1-Qm, NhK-1-Qm. In another example, SGj-1-m includes Nh1-j-1-m, Nh2-j-1-m, NhK-j-1-m; SGj-qm includes Nh1-jqm, Nh2-jqm, NhK-jqm; SGj-Qm includes Nh1-jQm, Nh2-jQm, NhK-jQm. In another example, SGJ-1-m includes Nh1-J-1-m, Nh2-1-Jm, NhK-1-Jm; SGJ-qm includes Nh1-Jqm, Nh2-Jqm, NhK-Jqm; SGJ-Qm includes Nh1-JQm, Nh2-JQm, NhK-JQm.

[0068] In some embodiments, the second ends of the light-emitting elements in the kth column of the qth group of the Q groups of light-emitting elements from the N light-emitting control units in the mth row of the plurality of light-emitting control units are electrically connected to the kth second voltage signal line of the Kth second voltage signal line of the qth subgroup of the second voltage signal lines in the jth group of the Q subgroups of the M-level second voltage signal lines. Figure 4In one example, the second ends of the light emitting elements in the first column of the first group of Q groups of light emitting elements from the N light emitting control units (CU(1,1) to CU(1,N)) in r11 are respectively electrically connected to the first second voltage signal line Nh1-1-1-1 of the K second voltage signal lines (including Nh1-1-1-1, Nh2-1-1-1, NhK-1-1-1) in the first subgroup SG1-1-1 of the second voltage signal lines of the J group (including Gh1-1 to Gh1-J) in the first level Gh1 of the M levels (including Gh1, ..., Ghm, ..., GhM) of the second voltage signal lines, and the first subgroup SG1-1-1 of the Q subgroups (including SG1-1-1 to SG1-Q-1) in the first group Gh1 of the second voltage signal lines. In another example, the second ends of the light emitting elements in the K-th column in the Q-th group of Q groups of light emitting elements from N light emitting control units (CU(1,1) to CU(1,N)) in r11 are respectively electrically connected to the K-th second voltage signal line NhK-1-Q-1 in the K-th second voltage signal line (including Nh1-1-Q-1, Nh2-1-Q-1, NhK-1-Q-1) in the Q-th subgroup SG1-Q-1 of the second voltage signal lines of the first level Gh1 of the M levels (including Gh1, ..., Ghm, ..., GhM) of the second voltage signal lines, and the K-th second voltage signal line NhK-1-Q-1 in the J-th group (including Gh1-1 to Gh1-J) of the second voltage signal lines of the first group Gh1 of the Q subgroups (including SG1-1-1 to SG1-Q-1) of the second voltage signal lines. In another example, the second ends of the light emitting elements in the first column of the first group of Q groups of light emitting elements from N light emitting control units (CU(m,1) to CU(m,N)) in rm1 are respectively electrically connected to the first second voltage signal line Nh1-1-1-m of the K second voltage signal lines (including Nh1-1-1-m, Nh2-1-1-m, NhK-1-1-m) in the first subgroup SG1-Qm of the second voltage signal lines of the J group (including Ghm-1 to Ghm-J) in the mth level Ghm of the second voltage signal lines of the M level (including Gh1, ..., Ghm, ..., GhM) in the first group Ghm-1 of the Q subgroups (including SG1-1-m to SG1-Qm) in the second voltage signal lines.In another example, the second ends of the light emitting elements in the K-th column of the Q-th group of Q group light emitting elements from the N light emitting control units (CU(1,1) to CU(1,N)) in rm1 are respectively electrically connected to the K-th second voltage signal line NhK-1-Qm in the K-th second voltage signal line (including Nh1-1-Qm, Nh2-1-Qm, NhK-1-Qm) in the Q-th subgroup SG1-Qm of the first group Ghm-1 of the second voltage signal lines of the m-th level Ghm in the J-th group (including Ghm-1 to Ghm-J) in the M-th level (including Gh1, ..., Ghm, ..., GhM) of the second voltage signal lines.

[0069] In some embodiments, the light-emitting substrate further includes I×J second voltage signal supply lines, including (Nv1-1-1, ..., Nv1-j-1, ..., Nv1-J-1), (Nv2-1-1, ..., Nv2-j-1, ..., Nv2-J-1), (NvK-1-1, ..., NvK-j-1, ..., NvK-J-1), ..., (Nv1-1-q, ..., Nv1-jq, ..., Nv1-J q), (Nv2-1-q,..., Nv2-jq,..., Nv2-Jq), (NvK-1-q,..., NvK-jq,..., NvK-Jq)..., (Nv1-1-Q,..., Nv1-jQ, ..., Nv1-JQ), (Nv2-1-Q, ..., Nv2-jQ, ..., Nv2-JQ), (NvK-1-Q, ..., NvK-jQ, ..., NvK-JQ), such as Figure 4 The I×J second voltage signal supply lines are configured to supply the second voltage signal to (M×J) groups of second voltage signal lines.

[0070] In some embodiments, I second voltage signal lines in a corresponding group of second voltage signal lines are respectively connected to a group of I second voltage signal supply lines in I×J second voltage signal supply lines. In one example, I second voltage signal lines in Ghm-1 are respectively connected to the first group of I second voltage signal supply lines in I×J second voltage signal supply lines. In another example, I second voltage signal lines in Ghm-j are respectively connected to the jth group of I second voltage signal supply lines in I×J second voltage signal supply lines. In another example, I second voltage signal lines in Ghm-J are respectively connected to the Jth group of I second voltage signal supply lines in I×J second voltage signal supply lines.

[0071] In some embodiments, I×J second voltage signal supply lines are grouped into Q groups of second voltage signal supply lines, including Gv-1, ..., Gv-q, ..., Gv-Q. Q is an integer greater than or equal to one, such as 1, 2, greater than 5, greater than 10, greater than 50, greater than 100. In some embodiments, a corresponding group in the Q groups of second voltage signal supply lines includes K subgroups of second voltage signal supply lines. K is an integer greater than or equal to one, such as 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 or more. Optionally, K=3 (e.g., Figure 4 ). For example, Gv-1 includes K subgroups of second voltage signal supply lines, including SGv1-1, SGv2-1, and SGvK-1; Gv-q includes K subgroups of second voltage signal supply lines, including SGv1-q, SGv2-q, and SGvK-q; Gv-Q includes K subgroups of second voltage signal supply lines, including SGv1-Q, SGv2-Q, and SGvK-Q. In some embodiments, a corresponding subgroup of the K subgroups of second voltage signal supply lines includes J second voltage signal supply lines. For example, SGv1-1 includes J second voltage signal supply lines, including Nv1-1-1, ..., Nv1-j-1, ..., Nv1-J-1; SGv2-1 includes J second voltage signal supply lines, including Nv2-1-1, ..., Nv2-j-1, ..., Nv2-J-1; SGvK-1 includes J second voltage signal supply lines, including NvK-1-1, ..., NvK-j-1, ..., NvK-J-1. In another example, SGv1-q includes J second voltage signal supply lines, including Nv1-1-q, ..., Nv1-jq, ..., Nv1-Jq; SGv2-q includes J second voltage signal supply lines, including Nv2-1-q, ..., Nv2-jq, ..., Nv2-Jq; SGvK-q includes J second voltage signal supply lines, including NvK-1-q, ..., NvK-jq, ..., NvK-Jq. In another example, SGv1-Q includes J second voltage signal supply lines, including Nv1-1-Q, ..., Nv1-jQ, ..., Nv1-JQ; SGv2-Q includes J second voltage signal supply lines, including Nv2-1-Q, ..., Nv2-jQ, ..., Nv2-JQ; SGvK-Q includes J second voltage signal supply lines, including NvK-1-Q, ..., NvK-jQ, ..., NvK-JQ.

[0072] In some embodiments, the kth second voltage signal line of the Kth second voltage signal lines of the qth subgroup of the second voltage signal lines of the jth group of the second voltage signal lines in the M-stage second voltage signal lines are electrically connected to the jth second voltage signal line of the Jth second voltage signal line of the kth subgroup of the second voltage signal supply lines of the Kth subgroup of the qth group of the second voltage signal supply lines in the Q-stage second voltage signal supply lines. Figure 4In one example, the first second voltage signal line (including Nh1-1-1-1, ..., Nh1-1-1-m, ..., Nh1-1-1-M) of the K second voltage signal lines in the first subset (including SG1-1-1, ..., SG1-1-m, ..., SG1-1-M) of the second voltage signal lines in the first group (including Gh1-1, ..., Ghm-1, ..., GhM-1) of the J groups of second voltage signal lines in the M level (including Gh1, ..., Ghm, ..., GhM) are respectively electrically connected to the first second voltage signal supply line (Nv1-1-1) of the J second voltage signal supply lines in the first subset (SGv1-1) of the second voltage signal lines in the first group (Gv-1) of the K subsets of the second voltage signal lines in the Q group of second voltage signal lines. In another example, the Kth second voltage signal line (including NhK-JQ-1, ..., NhK-JQm, ..., NhK-JQM) of the K second voltage signal lines in the Qth subgroup (including SGJ-Q-1, ..., SGJ-Qm, ..., SGJ-QM) of the second voltage signal lines in the Jth group (including Gh1-J, ..., Ghm-J, ..., GhM-J) of the second voltage signal lines in Q groups of M levels (including Gh1, ..., Ghm, ..., GhM) are respectively electrically connected to the Jth second voltage signal supply line (NvK-JQ) of the J second voltage signal supply lines in the Kth subgroup (SGvK-Q) of the second voltage signal supply lines in the Q group (Gv-Q) of the second voltage signal lines in Q group. In another example, the 2nd second voltage signal line (including Nh2-J-1-1, ..., Nh2-J-1-m, ..., Nh2-J-1-M) of the K second voltage signal lines in the first subset (including SG1-1-1, ..., SG1-1-m, ..., SG1-1-M) of the second voltage signal lines in the Jth group (including Gh1-J, ..., Ghm-J, ..., GhM-J) of the second voltage signal lines in Q groups (including Gh1, ..., Ghm, ..., GhM) are respectively electrically connected to the Jth second voltage signal supply line (Nv2-J-1) of the J second voltage signal lines in the second subset (SGv2-1) of the K second voltage signal lines in the first group (Gv-1) of the second voltage signal lines in Q groups.

[0073] In some embodiments, reference Figure 2, a corresponding one of the multiple light-emitting control units includes Q groups of light-emitting elements. Q is an integer greater than or equal to one, such as 1, 2, greater than 5, greater than 10, greater than 50, greater than 100. For example, a corresponding one of the multiple light-emitting control units CU (m, n) includes Q groups of light-emitting elements Gs-1, ..., Gs-q, ..., Gs-Q. The corresponding group in the Q groups of light-emitting elements includes K columns of light-emitting elements. For example, Gs-1 includes Cs1-1, Cs2-1, CsK-1, Gs-q includes Cs1-q, Cs2-q, CsK-q and Gs-Q includes Cs1-Q, Cs2-Q, CsK-Q. K is an integer greater than or equal to one, such as 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 or more. Optionally, K=3 (such as Figure 2 In some embodiments, the kth column of K columns of light emitting elements includes J rows of light emitting elements (e.g., rm1, rm2, ..., rmj, rm(j+1), ..., rm(J-1), rmJ). Optionally, 1≤k≤K. Optionally, I=K×Q.

[0074] Reference Figure 3 In some embodiments, the kth second voltage signal line in the qth subgroup of the K second voltage signal lines in the jth group of the Q subgroups in the J group of second voltage signal lines in the M-level second voltage signal lines, and the jth second voltage signal line in the kth subgroup of the J second voltage signal lines in the kth subgroup of the K subgroup in the qth group of the Q group of second voltage signal lines are electrically connected to the second ends of the light-emitting elements in the jth row of the J row of the K-th column of the K-th group of the Q group of light-emitting elements from a plurality of light-emitting control units of M rows and N columns.

[0075] refer to Figure 4In one example, the first second voltage signal line (including Nh1-1-1-1, …, Nh1-1-1, …, Nh1-1-1-2, …, Nh1-1-2) of the first second voltage signal line (including Nh1- ... h1-1-1-m,…,Nh1-1-1-M), the first second voltage signal supply line (Nv1-1-1) of the first subgroup (SGv1-1) of the K subgroups of the second voltage signal supply lines in the first group (Gv-1) of the Q groups of second voltage signal supply lines is electrically connected to the first group (e.g., Gs-1,…, Gs-q,…, Gs-Q) of light emitting elements in the Q groups (e.g., Gs-1,…, Gs-q,…, Gs-Q) of the plurality of light emitting control units from M rows and N columns, respectively. Figure 2 The first column of light emitting elements (eg, Gs-1 in Gs-1) in K columns (eg, Cs1-1, Cs2-1, CsK-1) Figure 2 The second ends of the light emitting elements in the first row (e.g., r11, rm1, rM1) of the J rows of light emitting elements in Cs1-1 in FIG.

[0076] In another example, the Kth second voltage signal line (including NhK-JQ-1, ..., SGJ-Qm, ..., SGJ-QM) of the Kth second voltage signal line (including NhK-JQ-1, ..., SGJ-Qm, ..., SGJ-QM) of the Jth group (including Gh1-J, ..., Ghm-J, ..., GhM-J) of the second voltage signal lines of the Qth subgroup (including SGJ-Q-1, ..., SGJ-Qm, ..., SGJ-QM) of the second voltage signal lines of the M stages (including Gh1, ..., Ghm, ..., GhM) respectively ,NhK-JQm,…,NhK-JQM), the J-th second voltage signal supply line (NvK-JQ) of the J-th second voltage signal supply lines of the K-th subgroup (SGvK-Q) of the Q-th group (Gv ... Figure 2 The Kth column (e.g., Cs1-Q, Cs2-Q, CsK-Q) of the light emitting element in Gs-Q) Figure 2 The second end of the light emitting element in the Jth row (e.g., r1J, rmJ, rMJ) of the J-row light emitting elements in the CsK-Q in the (CsK-Q).

[0077] In another example, the second second voltage signal line (including Nh2-J-1-1, …, Nh2-J-1-2, …, Nh2-J-1-3, …, Nh2-J-1-4, …, Nh2-J-1-5, …, Nh2-J-1-6, …, Nh2-J-1-7, …, Nh2-J-1-8, …, Nh2-J-1-9, …, Nh2-J-1-11, …, Nh2-J-1-12, …, Nh2-J-1-13, …, Nh2-J-1-14, …, Nh2-J-1-15, …, Nh2-J-1-9, …, Nh2-J-1-16, …, Nh2-J-1-17, …, Nh2-J-1-18, …, Nh2-J-1-19, …, Nh2-J-1-1 h2-J-1-m,…,Nh2-J-1-M), the J-th second voltage signal supply line (Nv2-J-1) of the J second voltage signal supply lines of the second subgroup (SGv2-1) of the K subgroups of the first group (Gv-1) of the Q group of second voltage signal supply lines is electrically connected to the first group (e.g., Gs-1,…, Gs-q,…, Gs-Q) of light emitting elements of the Q group (e.g., Gs-1,…, Gs-q,…, Gs-Q) of the plurality of light emitting control units from M rows and N columns, respectively. Figure 2 The second column of light emitting elements (eg, Gs-1 in Gs-1) in K columns (eg, Cs1-1, Cs2-1, CsK-1) Figure 2 The second end of the light emitting element in the Jth row (e.g., r1J, rmJ, rMJ) of the J-row light emitting elements in Cs2-1).

[0078] Reference Figures 2 to 4 In some embodiments, the J-th row of light-emitting elements in the k-th column of the K-th column of light-emitting elements includes light-emitting elements of the same color. Figure 2 In some embodiments, the J-row light-emitting elements in the first column (e.g., Cs1-1, Cs1-q, Cs1-Q) of the K-column light-emitting elements of the Q group (e.g., Gs-1, ..., Gs-q, ..., Gs-Q) are light-emitting elements of a first color (e.g., red); the J-row light-emitting elements in the second column (e.g., Cs2-1, Cs2-q, Cs2-Q) of the K-column light-emitting elements of the Q group (e.g., Gs-1, ..., Gs-q, ..., Gs-Q) are light-emitting elements of a second color (e.g., green); and the J-row light-emitting elements in the K-th column (e.g., CsK-1, CsK-q, CsK-Q) of the K-column light-emitting elements of the Q group (e.g., Gs-1, ..., Gs-q, ..., Gs-Q) are light-emitting elements of a K-th color (e.g., blue). Optionally, K=3.

[0079] In some embodiments, the J rows of light-emitting elements in the kth column of the K columns of light-emitting elements include K light-emitting elements of the kth color of different colors. Figure 2In some embodiments, the J-row light-emitting elements in the first column (e.g., Cs1-1, Cs1-q, Cs1-Q) of the K-column light-emitting elements of the Q group (e.g., Gs-1, ..., Gs-q, ..., Gs-Q) are light-emitting elements of the first color of the K different colors; the J-row light-emitting elements in the second column (e.g., Cs2-1, Cs2-q, Cs2-Q) of the K-column light-emitting elements of the Q group (e.g., Gs-1, ..., Gs-q, ..., Gs-Q) are light-emitting elements of the second color of the K different colors; and the J-row light-emitting elements in the K-th column (e.g., CsK-1, CsK-q, CsK-Q) of the K-column light-emitting elements of the Q group (e.g., Gs-1, ..., Gs-q, ..., Gs-Q) are light-emitting elements of the K-th color of the K different colors. Optionally, K=3.

[0080] In some embodiments, the light emitting elements in the (I / K) columns in the I column of light emitting elements have the kth color. In some embodiments, in at least one light emitting control unit, the light emitting elements in the same column in the N columns of light emitting elements have the same color. Optionally, in all multiple light emitting control units, the light emitting elements in the same column in the N columns of light emitting elements have the same color. Optionally, the color patterns in the Q group of light emitting elements are the same. Optionally, the color patterns in multiple light emitting control units are the same. As used herein, the term "color pattern" refers to a pattern of (one or more) colors of light emitted by a light emitting element when it is illuminated.

[0081] In some embodiments, the total number of second voltage supply lines is I×J.

[0082] In the present light-emitting substrate, the light-emitting elements in the kth column of the qth group of the Q-group light-emitting elements, respectively from a plurality of light-emitting control units in M ​​rows and N columns, are configured to emit light simultaneously. By having such a structure, the driving current can be effectively increased, and the responsiveness of the driving chip can be greatly enhanced.

[0083] Figure 5 is a schematic diagram showing the structure of a plurality of first voltage signal lines, a plurality of second voltage signal lines, and a plurality of second voltage supply lines in a light emitting substrate according to some embodiments of the present disclosure. Figure 5 A plurality of micro light emitting diodes (micro LEDs) arranged in two rows and two columns, a plurality of first voltage signal lines VSL1 , a plurality of second voltage signal lines VSL2 , and a plurality of second voltage supply lines SSL2 are shown. Figure 6 yes Figure 5 A magnified view of the magnified area in . Figure 6As shown in , a corresponding one of the plurality of second voltage supply lines SSL2 and a corresponding one of the plurality of second voltage signal lines VSL2 intersect each other at an amplification region ZR. In a region where a corresponding one of the plurality of second voltage supply lines SSL2 intersects with a corresponding one of the plurality of second voltage signal lines VSL2, a corresponding one of the plurality of second voltage supply lines SSL2 has a first width w1 along an extension direction of the corresponding one of the plurality of second voltage signal lines VSL2. In a region outside a region where a corresponding one of the plurality of second voltage supply lines SSL2 intersects with a corresponding one of the plurality of second voltage signal lines VSL2, a corresponding one of the plurality of second voltage supply lines SSL2 has a second width w2 along an extension direction of the corresponding one of the plurality of second voltage signal lines VSL2. Optionally, the first width w1 is greater than the second width w2. By making the first width w1 greater than the second width w2, a line open defect in a corresponding one of the plurality of second voltage supply lines SSL2 in a region where a corresponding one of the plurality of second voltage supply lines SSL2 intersects with a corresponding one of the plurality of second voltage signal lines VSL2 can be prevented.

[0084] Figure 7 is a schematic diagram showing the structure of a backplane for bonding a micro LED of a light-emitting substrate according to some embodiments of the present disclosure. Figure 7 In some embodiments, the backplane includes a base substrate BS, a first metal layer MT1 on the base substrate BS, a first passivation layer PVX1 located on a side of the first metal layer MT1 away from the base substrate BS, a resin layer RS ​​located on a side of the first passivation layer PVX1 away from the base substrate BS, a second passivation layer PVX2 located on a side of the resin layer RS ​​away from the base substrate BS, a second metal layer MT2 located on a side of the second passivation layer PVX2 away from the base substrate BS, and a third passivation layer PVX3 located on a side of the second metal layer MT2 away from the base substrate BS. The second metal layer MT2 is connected to the first metal layer MT1 through a through hole penetrating the second passivation layer PVX2, the resin layer RS, and the first passivation layer PVX1.

[0085] In some embodiments, the light emitting substrate includes a base substrate BS, a first metal layer MT1 and a second metal layer MT2 on the base substrate BS; and at least one insulating layer separating the first metal layer MT1 from the second metal layer MT2.

[0086] In some embodiments, the at least one insulating layer includes a resin layer RS.

[0087] In some embodiments, the at least one insulating layer further includes a first passivation layer PVX1 located between the resin layer RS ​​and the first metal layer MT1 ; and a second passivation layer PVX2 located between the resin layer RS ​​and the second metal layer MT2 .

[0088] In some embodiments, the light emitting substrate further comprises a third passivation layer PVX3 located on a side of the second metal layer MT2 away from the base substrate BS; and at least two through holes penetrating the third passivation layer PVX3 and partially exposing the surface of the second metal layer MT2.

[0089] Portions of the second metal layer MT2 may be used as the first pad BP1 and the second pad BP2 to bond the micro-LED. In one example, the first metal layer MT1 and the second metal layer MT2 are made of copper or a copper-containing metal material. In some embodiments, nickel-gold may be formed on top of the first pad BP1 and the second pad BP2 using a nickel-gold plating process, and then indium metal may be plated on top of the nickel-gold. Typically, the micro-LED electrode is made of a gold material, which has a good bonding affinity with the indium material on the first pad BP1 and the second pad BP2.

[0090] In some embodiments, each of the first metal layer MT1 and the second metal layer MT2 includes copper. Optionally, the second metal layer MT2 further includes nickel gold on the surface exposed by the at least two through-hole portions. Optionally, the second metal layer MT2 further includes indium tin oxide on the surface exposed by the at least two through-hole portions.

[0091] The front light source is disposed on top of the reflective display panel. The first passivation layer PVX1 and the second passivation layer PVX2 prevent the first metal layer MT1 or the second metal layer MT2 from being oxidized by the resin layer RS. The resin layer RS ​​can reduce the total load of the front light source by reducing the coupling capacitance between the first metal layer MT1 and the second metal layer MT2. In addition, the presence of the resin layer RS ​​can ensure that the surface for bonding the micro LEDs is substantially uniform. The third passivation layer PVX3 prevents poor bubbling of the electrode material (e.g., the second metal layer MT2) in the front light source.

[0092] In some embodiments, the backplane further comprises an indium tin oxide layer located on the side of the third passivation layer PVX3 and the second metal layer MT2 away from the base substrate BS. The indium tin oxide layer is used to bond the flexible printed circuit. The third passivation layer PVX3 prevents the surface of the indium tin oxide layer from being poorly hazed.

[0093] Figure 8 is a schematic diagram showing the structure of a backplane for bonding a micro-LED of a light-emitting substrate according to some embodiments of the present disclosure. Figure 8 The back plate includes a first pad BP1 and a second pad BP2 made of indium tin oxide. The first pad BP1 and the second pad BP2 are respectively connected to the second metal layer MT2 through through holes penetrating the third passivation layer PVX3.

[0094] Fig. 9is a schematic diagram showing the structure of a backplane for bonding a micro-LED of a light-emitting substrate according to some embodiments of the present disclosure. Fig. 9 , in some embodiments, the resin layer RS ​​is confined to the LED bonding area. In one example, the orthographic projections of the first pad BP1 and the second pad BP2 on the base substrate BS cover the orthographic projection of the resin layer RS ​​on the base substrate BS. In some embodiments, the light-emitting substrate further includes a shading layer LS configured to block light emitted from the micro-LED to the base substrate BS. Optionally, the shading layer LS is on the same layer as the first metal layer MT1. Optionally, the shading layer LS is a pattern different from other patterns in the same layer (e.g., the first metal layer MT1). For example, the shading layer LS is spaced apart from any portion of the first metal layer MT1. In another example, the orthographic projection of the shading layer LS on the base substrate BS does not overlap with the orthographic projection of the first metal layer MT1 on the base substrate BS.

[0095] In some embodiments, the resin layer RS ​​is not limited to the LED bonding area (eg, instead, provided in the entire area of ​​the light emitting substrate), and the light emitting substrate further includes at least one gas release through hole to prevent gas defects during a high temperature manufacturing process. Fig.10 This is a cross-sectional view intersecting with the gas release through hole. Fig.10 In some embodiments, the gas release through hole GRV penetrates the third passivation layer PVX3 and the second passivation layer PVX2, thereby exposing the surface of the resin layer RS. The resin layer RS ​​is optionally made of an organic material that is easy to release gas during a high temperature process. The first passivation layer PVX1, the second passivation layer PVX2, and the third passivation layer PVX3 are optionally made of an inorganic material. In the absence of the gas release through hole GRV, the gas released by the resin layer RS ​​may cause one or more passivation layers to crack, thereby causing rupture. Optionally, the light-emitting substrate also includes a plurality of gas release through holes arranged in an array.

[0096] refer to Figure 5 , Figure 7 , Figure 8 and Fig. 9 , the signal lines along the row direction may be part of the second metal layer MT2 , and the signal lines along the column direction may be part of the first metal layer MT1 .

[0097] Fig.11 FIG. 1 is an enlarged view of an LED bonding point in a light emitting substrate according to some embodiments of the present disclosure. Fig.11, the LED bonding point LEDB includes a first group of pads BPS1 and a second group of pads BPS2. In one example, the first group of pads BPS1 includes a first pad BP1 and a second pad BP2; the second group of pads BPS2 includes a third pad BP1' and a fourth pad BP2'. By having an extra group of pads, when one of the two groups is defective, the micro LED bonded to the LED bonding point can still work.

[0098] In another aspect, the present disclosure provides a display device. In some embodiments, the display device includes a light-emitting substrate described herein or manufactured by a method described herein, a display panel, and an integrated circuit connected to the display panel. Optionally, the display panel is a reflective display panel.

[0099] The present light-emitting substrate can realize a direct front light source for a reflective display panel. In the present display device, the present light-emitting substrate is arranged in front of the reflective display panel (on the display side of the display panel) to realize image display. In addition, when combined with the reflective display panel, the present light-emitting substrate can realize virtual reality image display.

[0100] Fig.12 The working principle of the reflective display device in some embodiments of the present disclosure is shown. Fig.12 , light L1 emitted from the micro LED of the light emitting substrate is reflected by the reflective electrode RE in the reflective display panel, and the reflected light L1 is transmitted to the eyes of the viewer. The light emitting substrate includes a light shielding layer LS to prevent the light emitted from the micro LED from interfering with the light reflected by the reflective display panel, thereby improving the display quality.

[0101] In some embodiments, the metal lines along the row direction and the metal lines (or black matrix lines) along the column direction cross each other at an angle other than 90 degrees. Typically, the metal lines in the reflective display panel along the row direction and along the column direction are perpendicular to each other. By making the metal lines along the row direction and the metal lines along the column direction in the light-emitting substrate cross each other at an angle other than 90 degrees, Moire pattern display defects can be avoided or reduced.

[0102] In one example, the metal lines along the row direction in the light-emitting substrate are substantially parallel to the metal lines along the row direction in the reflective display panel; and the metal lines along the column direction in the light-emitting substrate are not parallel to the metal lines along the column direction in the reflective display panel (e.g., at a non-zero angle).

[0103] In another example, the metal lines along the column direction in the light-emitting substrate are substantially parallel to the metal lines along the column direction in the reflective display panel; and the metal lines along the row direction in the light-emitting substrate are not parallel to the metal lines along the row direction in the reflective display panel (e.g., at a non-zero angle).

[0104] In some embodiments, the light emitting substrate includes a plurality of signal lines. In some embodiments, the plurality of signal lines include a plurality of signal lines extending along a first direction and a plurality of signal lines extending along a second direction, the second direction being different from the first direction. Optionally, the plurality of signal lines extending along the first direction are a portion of one of the first metal layer MT1 and the second metal layer MT2. Optionally, the plurality of signal lines extending along the second direction are a portion of the other of the first metal layer MT1 and the second metal layer MT2.

[0105] In some embodiments, the plurality of signal lines extending along the first direction include a second voltage signal line. Alternatively, the plurality of signal lines extending along the second direction include a first voltage signal line.

[0106] In some embodiments, the reflective display panel includes a plurality of first signal lines and a plurality of second signal lines. The light-emitting substrate includes a plurality of signal lines. Optionally, the plurality of signal lines include a plurality of signal lines extending along a first direction and a plurality of signal lines extending along a second direction, and the second direction is different from the first direction. Optionally, the plurality of signal lines extending along the first direction cross the plurality of first signal lines at an angle greater than zero and less than 20 degrees, and / or the plurality of signal lines extending along the second direction cross the plurality of second signal lines at an angle greater than zero and less than 20 degrees. Optionally, the plurality of first signal lines are a plurality of data lines, and the plurality of second signal lines are a plurality of gate lines. Optionally, the plurality of first signal lines are a plurality of gate lines, and the plurality of second signal lines are a plurality of data lines.

[0107] On the other hand, the present disclosure provides a method for driving a light-emitting substrate. In some embodiments, the light-emitting substrate includes a plurality of light-emitting control units, which are arranged in M ​​rows and N columns, M is an integer greater than or equal to one, and N is an integer greater than or equal to one, wherein a corresponding light-emitting control unit in the plurality of light-emitting control units includes a plurality of light-emitting elements arranged in J rows and I columns, J is an integer greater than or equal to one, I is an integer greater than or equal to one, and the i-th column in the I-column light-emitting elements includes J rows of light-emitting elements, 1≤i≤I. In some embodiments, the method includes: electrically connecting a first end of a light-emitting element in a corresponding row of light-emitting elements to a corresponding first voltage signal line in (M×J) first voltage signal lines; electrically connecting a second end of a light-emitting element in a corresponding row of light-emitting elements to I second voltage signal lines in a corresponding group of second voltage signal lines in (M×J) groups of second voltage signal lines; providing a first voltage signal to the first end; and providing a second voltage signal to a corresponding one of the second ends.

[0108] In some embodiments, the corresponding light-emitting control unit in a plurality of light-emitting control units includes Q groups of light-emitting elements, the corresponding group in the Q groups of light-emitting elements includes K columns of light-emitting elements, the corresponding group of second voltage signal lines includes Q subgroups of second voltage signal lines, the corresponding subgroup in the Q subgroups of second voltage signal lines includes K second voltage signal lines, Q is an integer greater than or equal to one, and K is an integer greater than or equal to one. In some embodiments, the method further includes: among the corresponding row of light-emitting elements, electrically connecting the second ends of the light-emitting elements in the kth column in the qth group of the Q groups of light-emitting elements of N light-emitting control units from the same row to the kth second voltage signal line in the qth subgroup of the K second voltage signal lines in the Q subgroups of the second voltage signal lines in the corresponding group of second voltage signal lines, 1≤q≤Q, and sequentially providing the second voltage signal to the K second voltage signal lines.

[0109] In some embodiments, the (M×J) group of second voltage signal lines includes M-level second voltage signal lines; the corresponding level in the M-level second voltage signal lines includes J-group second voltage signal lines; the corresponding group in the J-group second voltage signal lines includes Q sub-groups of second voltage signal lines; the corresponding sub-group in the Q sub-groups of second voltage signal lines includes K second voltage signal lines. In some embodiments, the method further includes: electrically connecting the second ends of the light-emitting elements in the k-th column of the q-th group of the Q-group light-emitting elements from the N light-emitting control units in the m-th row of the plurality of light-emitting control units to the k-th second voltage signal line in the q-th sub-group of the K-th second voltage signal lines in the j-th group of the Q sub-groups of the J-group second voltage signal lines in the m-th level of the M-level second voltage signal lines; and sequentially providing the second voltage signal to the K-th second voltage signal lines in the q-th sub-group of the second voltage signal lines in the j-th group of the Q sub-groups of the J-group second voltage signal lines in the m-th level of the M-level second voltage signal lines.

[0110] In some embodiments, the light emitting substrate further comprises I×J second voltage signal supply lines; and the I second voltage signal lines in the corresponding group of second voltage signal lines are respectively connected to a group of I second voltage signal supply lines in the I×J second voltage signal supply lines. In some embodiments, the method further comprises respectively connecting the I second voltage signal lines in the corresponding group of second voltage signal lines to a group of I second voltage signal supply lines in the I×J second voltage signal supply lines; and respectively providing the second voltage signal from the I second voltage signal supply lines in the group to the I second voltage signal lines in the corresponding group of second voltage signal lines.

[0111] In some embodiments, I×J second voltage signal supply lines are grouped into Q groups of second voltage signal supply lines, Q is an integer greater than or equal to one; a corresponding group in the Q groups of second voltage signal supply lines includes K subgroups of second voltage signal supply lines, K is an integer greater than or equal to one; a corresponding subgroup in the K subgroups of second voltage signal supply lines includes J second voltage signal supply lines. In some embodiments, the method further includes: providing the second voltage signal to the K subgroups of second voltage signal supply lines one by one and in sequence.

[0112] In some embodiments, the (M×J) groups of second voltage signal lines include M-level second voltage signal lines; the corresponding level in the M-level second voltage signal lines includes J groups of second voltage signal lines; the corresponding group in the J groups of second voltage signal lines includes Q subgroups of second voltage signal lines; the corresponding subgroup in the Q subgroups of second voltage signal lines includes K second voltage signal lines. In some embodiments, the method further includes: electrically connecting the kth second voltage signal line in the qth subgroup of the K second voltage signal lines in the jth group of the Q subgroups of the J groups of second voltage signal lines in the M-level second voltage signal lines to the jth second voltage signal line in the kth subgroup of the J second voltage signal lines in the qth group of the K subgroups of the Q group of second voltage signal supply lines; and sequentially providing the second voltage signal to the K second voltage signal lines in the qth subgroup of the second voltage signal lines in the jth group of the J groups of second voltage signal lines in the M-level second voltage signal lines.

[0113] In some embodiments, a corresponding one of the plurality of light emitting control units includes Q groups of light emitting elements, Q is an integer greater than or equal to one, a corresponding group of the Q groups of light emitting elements includes K columns of light emitting elements, K is an integer greater than or equal to one, the kth column of the K columns of light emitting elements includes J rows of light emitting elements, 1≤k≤K and I=K×Q. In some embodiments, the method further includes electrically connecting the jth second voltage signal line of the kth second voltage signal line of the kth second voltage signal line of the jth second voltage signal line of the Q subgroups of the J groups of second voltage signal lines of the M-level second voltage signal lines to the second ends of the light emitting elements in the kth column of the qth group of the Q groups of light emitting elements of the plurality of light emitting control units of M rows and N columns, respectively, through the kth second voltage signal line of the kth second voltage signal line of the Q subgroups of the jth group of the J groups of second voltage signal lines of the M-level second voltage signal lines; and sequentially providing a second voltage signal to the second voltage signal supply lines of the K subgroups of the qth group of the Q groups of second voltage signal supply lines.

[0114] In this driving method, the light emitting elements in the kth column of the qth group of the Qth group of light emitting elements from a plurality of light emitting control units in M ​​rows and N columns are configured to emit light simultaneously. By this driving method, the driving current can be effectively increased, and the responsiveness of the driver chip can be greatly improved.

[0115] In some embodiments, the J-row light-emitting elements in the k-th column of the K-column light-emitting elements include light-emitting elements of the same color. In some embodiments, the J-row light-emitting elements in the first column of the K-column light-emitting elements in the Q group are light-emitting elements of a first color (e.g., red); the J-row light-emitting elements in the second column of the K-column light-emitting elements in the Q group are light-emitting elements of a second color (e.g., green); and the J-row light-emitting elements in the K-th column of the K-column light-emitting elements in the Q group are light-emitting elements of the K-th color (e.g., blue). Optionally, K=3. Through the present driving method, light-emitting elements of the same color in the same corresponding positions in a plurality of light-emitting control units are configured to emit light simultaneously.

[0116] On the other hand, the present disclosure also provides a method for manufacturing a light-emitting substrate. In some embodiments, the method includes forming a plurality of light-emitting control units arranged in M ​​rows and N columns, M is an integer greater than or equal to one, and N is an integer greater than or equal to one, wherein a corresponding one of the plurality of light-emitting control units includes a plurality of light-emitting elements arranged in J rows and I columns, J is an integer greater than or equal to one, and I is an integer greater than or equal to one; the i-th column of the I-column light-emitting elements includes J rows of light-emitting elements, 1≤i≤I; forming (M×J) first voltage signal lines; and forming (M×J) groups of second voltage signal lines. In some embodiments, forming the multiple light-emitting control units includes: transferring micro light-emitting diodes to a backplane, in which the (M×J) first voltage signal lines and the (M×J) groups of second voltage signal lines are formed; electrically connecting the first ends of the micro light-emitting diodes in the corresponding rows of light-emitting elements to the corresponding first voltage signal lines among the (M×J) first voltage signal lines; and electrically connecting the second ends of the micro light-emitting diodes in the corresponding rows of light-emitting elements to I second voltage signal lines in the corresponding groups of second voltage signal lines in the (M×J) groups of second voltage signal lines.

[0117] Fig.13 is a schematic diagram showing the structure of a light-emitting substrate before a micro light-emitting diode is transferred to the light-emitting substrate according to some embodiments of the present disclosure. Fig.13, the corresponding first voltage signal line (e.g., P1-1) has two opposite terminals TP, the corresponding second voltage signal line (e.g., NhK1-Q-1) has two opposite terminals TN; the corresponding second voltage signal supply line (e.g., Nv1-1-1) extends from a corresponding one of the I input terminals TI to a corresponding one of the I connection terminals Tc. Optionally, the corresponding sub-pixel is electrically connected to the corresponding first voltage signal line at the first connection terminal Tpc, and is electrically connected to the corresponding second voltage signal line at the second connection terminal Tnc.

[0118] In some embodiments, before transferring the micro-light-emitting diode to the backplane, the method further includes at least one of the following steps: measuring the resistance between the two opposite ends TP of the corresponding first voltage signal line; measuring the resistance between the two opposite ends TN of the corresponding second voltage signal line; or measuring the resistance between the corresponding end (one of the two opposite ends TP) of the corresponding first voltage signal line and the corresponding end (one of the two opposite ends TN) of the corresponding second voltage signal line. By measuring the resistance between the two opposite ends TP of the corresponding first voltage signal line, an open circuit in the corresponding first voltage signal line can be detected. By measuring the resistance between the two opposite ends TN of the corresponding second voltage signal line, an open circuit in the corresponding second voltage signal line can be detected. By measuring the resistance between the corresponding end of the corresponding first voltage signal line and the corresponding end of the corresponding second voltage signal line, a short circuit between the corresponding first voltage signal line and the corresponding second voltage signal line can be detected.

[0119] In some embodiments, before transferring the micro light-emitting diode to the backplane, the method also includes forming I×J second voltage signal supply lines; and connecting I second voltage signal lines in a corresponding group of second voltage signal lines to a group of I second voltage signal supply lines (of the I×J second voltage signal supply lines) at I connection terminals, respectively, wherein the I second voltage signal supply lines in the group extend from I input terminals to I connection terminals, respectively.

[0120] In some embodiments, before transferring the micro-LED to the backplane, the method further includes measuring the resistance between two of the I input terminals. By measuring the resistance between the two of the I input terminals, a short circuit between two of the I second voltage signal lines can be detected.

[0121] In some embodiments, before the micro-light-emitting diode is transferred to the backplane, the method also includes measuring the resistance between the corresponding input end of the corresponding second voltage signal supply line and the corresponding end of the corresponding second voltage signal line. By measuring the resistance between the corresponding input end of the corresponding second voltage signal supply line and the corresponding end of the corresponding second voltage signal line, the connectivity between the corresponding second voltage signal supply line and the corresponding second voltage signal line can be determined. In one example, the corresponding second voltage signal supply line is configured to provide a second voltage signal to the corresponding second voltage signal line, however, if the line is open by measuring the resistance between the corresponding input end of the corresponding second voltage signal supply line and the corresponding end of the corresponding second voltage signal line, it indicates that the two metal layers at the position of the corresponding connection end of the corresponding second voltage signal supply line are not connected. In another example, the corresponding second voltage signal supply line is not configured to provide a second voltage signal to the corresponding second voltage signal line, and the short circuit between the corresponding second voltage signal supply line and the corresponding second voltage signal line can be detected by measuring the resistance between the corresponding input end of the corresponding second voltage signal supply line and the corresponding end of the corresponding second voltage signal line.

[0122] In some embodiments, before transferring the micro light emitting diode to the backplane, the method further includes measuring the resistance between the first connection terminal Tpc and the second connection terminal Tnc.

[0123] For the purpose of illustration and description, the above description of the embodiments of the present invention has been given. It is not exhaustive, nor is it intended to limit the present invention to the precise form or exemplary embodiments disclosed. Therefore, the foregoing description should be considered illustrative rather than restrictive. Obviously, many modifications and variations will be apparent to those skilled in the art. The embodiments are selected and described to explain the principles of the present invention and its best mode practical application, so that those skilled in the art can understand the various embodiments of the present invention and the various modifications suitable for the specific use or implementation under consideration. The scope of the present invention is intended to be defined by the appended claims and their equivalents, wherein all terms are meant to have the broadest reasonable meaning unless otherwise stated. Therefore, the term "the present invention" and the like do not necessarily limit the scope of the claims to a specific embodiment, and the reference to the exemplary embodiments of the present invention does not mean a limitation of the present invention, and such limitation should not be inferred. The present invention is limited only by the spirit and scope of the appended claims. In addition, these claims may involve the use of "first", "second", etc., followed by a noun or element. These terms should be understood as nomenclature, and should not be interpreted as limiting the number of elements modified by these nomenclatures, unless a specific number has been given. Any advantages and benefits described may not apply to all embodiments of the present invention. It should be understood that those skilled in the art may make changes to the described embodiments without departing from the scope of the present invention as defined by the appended claims. In addition, the elements and assemblies in this disclosure are not intended to be contributed to the public, regardless of whether the element or assembly is clearly described in the appended claims.

Claims

1. A light-emitting substrate, comprising: a plurality of light emitting control units arranged in M ​​rows and N columns, M being an integer greater than or equal to one, and N being an integer greater than or equal to one, wherein a corresponding light emitting control unit among the plurality of light emitting control units comprises a plurality of light emitting elements arranged in J rows and I columns, J being an integer greater than or equal to one, and I being an integer greater than or equal to one, and the i-th column among the I columns of light emitting elements comprises the Jth row of light emitting elements, 1≤i≤I; (M×J) first voltage signal lines; and (M×J) groups of second voltage signal lines; wherein the first ends of the light emitting elements in the corresponding row of light emitting elements are electrically connected to the corresponding first voltage signal lines among the (M×J) first voltage signal lines; The second ends of the light emitting elements in the corresponding row of light emitting elements are respectively connected to I second voltage signal lines in the corresponding group of second voltage signal lines in the (M×J) groups of second voltage signal lines; (I×J) second voltage signal supply lines; and The I second voltage signal lines in the corresponding group of second voltage signal lines are respectively connected to a group of I second voltage signal supply lines.

2. The light-emitting substrate according to claim 1, wherein: The corresponding light emitting control unit among the plurality of light emitting control units includes Q groups of light emitting elements, where Q is an integer greater than or equal to one; A corresponding group of the Q groups of light emitting elements includes K columns of light emitting elements, where K is an integer greater than or equal to one; The kth column of the K columns of light emitting elements includes J rows of light emitting elements, 1≤k≤K, and I = K × Q; The corresponding group of second voltage signal lines includes Q subsets of second voltage signal lines, and a corresponding subset of the Q subsets of second voltage signal lines includes K second voltage signal lines; and In the corresponding row of light-emitting elements, the second ends of the light-emitting elements in the kth column of the qth group of the Q groups of light-emitting elements from the N light-emitting control units in the same row are electrically connected to the kth second voltage signal line of the K second voltage signal lines in the qth subgroup of the Q subgroups of the second voltage signal lines in the corresponding group, 1 ≤ q ≤ Q.

3. The light-emitting substrate according to claim 2, wherein: The (M×J) group of second voltage signal lines includes M levels of second voltage signal lines; A corresponding stage of the M stages of second voltage signal lines includes J groups of second voltage signal lines; A corresponding group of the J groups of second voltage signal lines includes Q subgroups of second voltage signal lines; A corresponding subgroup of the Q subgroups of second voltage signal lines includes K second voltage signal lines; and The second ends of the light-emitting elements in the kth column of the qth group of the Q group of light-emitting elements from the N light-emitting control units in the mth row among the multiple light-emitting control units are respectively electrically connected to the kth second voltage signal line of the qth sub-group of the K second voltage signal lines in the jth group of the Q sub-groups of the J group of second voltage signal lines in the mth level among the M-level second voltage signal lines.

4. The light-emitting substrate according to claim 1, wherein: The I×J second voltage signal supply lines are grouped into Q groups of second voltage signal supply lines, where Q is an integer greater than or equal to one; A corresponding group of the Q groups of second voltage signal supply lines includes K subgroups of second voltage signal supply lines, K being an integer greater than or equal to one; and A corresponding subset of the K subsets of second voltage signal supply lines includes J second voltage signal supply lines.

5. The light emitting substrate according to claim 4, wherein: The (M×J) group of second voltage signal lines includes M levels of second voltage signal lines; A corresponding stage of the M stages of second voltage signal lines includes J groups of second voltage signal lines; A corresponding group of the J groups of second voltage signal lines includes Q subgroups of second voltage signal lines; A corresponding subgroup of the Q subgroups of second voltage signal lines includes K second voltage signal lines; and The kth second voltage signal line among the qth sub-group of the K second voltage signal lines among the jth group of the Q sub-group of the J groups of second voltage signal lines among the M-level second voltage signal lines are electrically connected to the jth second voltage signal line among the kth sub-group of the J second voltage signal supply lines among the qth group of the K sub-group of the Q group of second voltage signal supply lines, respectively.

6. The light emitting substrate according to claim 5, wherein: The corresponding light emitting control unit among the plurality of light emitting control units includes Q groups of light emitting elements, where Q is an integer greater than or equal to one; A corresponding group of the Q groups of light emitting elements includes K columns of light emitting elements, where K is an integer greater than or equal to one; The kth column of the K columns of light emitting elements includes J rows of light emitting elements, 1≤k≤K, and I = K × Q; The kth second voltage signal line of the K second voltage signal lines of the qth sub-group of the second voltage signal lines of the Q sub-groups in the jth group of the J groups of second voltage signal lines in the M-level second voltage signal lines, and the jth second voltage signal line of the J second voltage signal line of the kth sub-group of the second voltage signal lines of the K sub-groups in the qth group of the Q groups of second voltage signal lines are electrically connected to the second ends of the light-emitting elements in the kth column of the qth group of the Q groups of light-emitting elements from the multiple light-emitting control units of M rows and N columns respectively.

7. The light-emitting substrate according to claim 2 or 3, wherein: The J rows of light emitting elements in the k-th column of the K columns of light emitting elements include light emitting elements of the k-th color among K different colors; The light emitting elements in the (I / K)th column of the Ith column of light emitting elements have the kth color; and The light emitting elements in the same column of the I column of light emitting elements have the same color.

8. The light-emitting substrate according to claim 2 or 3, wherein: The color patterns of the light emitting elements in group Q are the same.

9. The light-emitting substrate according to any one of claims 2, 3 and 4, wherein: K = 3。 10. The light emitting substrate according to any one of claims 1 to 6, wherein The color patterns in the plurality of light emitting control units are the same.

11. The light-emitting substrate according to any one of claims 1 to 6, wherein: The plurality of light emitting elements are miniature light emitting diodes or micro light emitting diodes.

12. The light-emitting substrate according to any one of claims 1 to 6, comprising: base substrate; a first metal layer and a second metal layer on the base substrate; as well as At least one insulating layer separates the first metal layer from the second metal layer.

13. The light emitting substrate according to claim 12, further comprising a plurality of signal lines; in, The plurality of signal lines include a plurality of signal lines extending along a first direction and a plurality of signal lines extending along a second direction, the second direction being different from the first direction; The plurality of signal lines extending along the first direction are part of one of the first metal layer and the second metal layer; as well as The plurality of signal lines extending along the second direction are part of the other of the first metal layer and the second metal layer.

14. The light emitting substrate according to claim 13, wherein: The plurality of signal lines extending along the first direction include a second voltage signal line; and The plurality of signal lines extending along the second direction include a first voltage signal line.

15. The light emitting substrate according to claim 12, wherein: The at least one insulating layer includes a resin layer.

16. The light emitting substrate according to claim 15, wherein: The at least one insulating layer further includes a first passivation layer between the resin layer and the first metal layer, and a second passivation layer between the resin layer and the second metal layer.

17. The light emitting substrate according to claim 16, further comprising a third passivation layer located on a side of the second metal layer away from the base substrate; and At least two through holes penetrate the third passivation layer and partially expose a surface of the second metal layer.

18. The light emitting substrate according to claim 17, wherein: Each of the first metal layer and the second metal layer comprises copper; and The second metal layer further includes nickel-gold on the surface exposed by the at least two via portions.

19. The light emitting substrate according to claim 17, wherein: Each of the first metal layer and the second metal layer comprises copper; and The second metal layer further includes indium tin oxide on the surface exposed by the at least two via portions.

20. The light emitting substrate according to claim 15, wherein: The resin layer is confined in the micro LED bonding area.

21. The light emitting substrate of claim 17, further comprising at least one gas release through hole.

22. The light emitting substrate according to claim 21, wherein: The at least one gas release through hole penetrates the second passivation layer and the third passivation layer.

23. The light emitting substrate of claim 21, comprising a plurality of gas release through holes arranged in an array.

24. The light emitting substrate according to any one of claims 1 to 6, further comprising a first group of solder pads and a second group of solder pads; in, The first group of pads includes a first pad and a second pad; and The second group of pads includes a third pad and a fourth pad.

25. A display device comprising the light emitting substrate according to any one of claims 1 to 24, a reflective display panel, and an integrated circuit connected to the reflective display panel; in, The light emitting substrate is located on the display side of the reflective display panel.

26. The display device according to claim 25, wherein: The reflective display panel includes a plurality of first signal lines and a plurality of second signal lines; The light-emitting substrate includes a plurality of signal lines; The plurality of signal lines include a plurality of signal lines extending along a first direction and a plurality of signal lines extending along a second direction, the second direction being different from the first direction; The plurality of signal lines extending along the first direction cross the plurality of first signal lines at an angle greater than zero and less than 20 degrees, and / or the plurality of signal lines extending along the second direction cross the plurality of second signal lines at an angle greater than zero and less than 20 degrees; and The plurality of first signal lines are a plurality of data lines, and the plurality of second signal lines are a plurality of gate lines.

27. A method for driving a light-emitting substrate, the light-emitting substrate comprising a plurality of light-emitting control units arranged in M ​​rows and N columns, M being an integer greater than or equal to one, and N being an integer greater than or equal to one, wherein: A corresponding light emitting control unit among the plurality of light emitting control units comprises a plurality of light emitting elements arranged in J rows and I columns, J is an integer greater than or equal to one, I is an integer greater than or equal to one, and the i-th column among the I columns of light emitting elements comprises J rows of light emitting elements, 1≤i≤I; The method includes: electrically connecting first ends of light emitting elements in corresponding rows of light emitting elements to corresponding first voltage signal lines among (M×J) first voltage signal lines; electrically connecting the second ends of the light emitting elements in the corresponding row of light emitting elements to I second voltage signal lines in a corresponding group of second voltage signal lines in (M×J) groups of second voltage signal lines; providing a first voltage signal to the first terminal; and providing a second voltage signal to a corresponding one of the second terminals; connecting the I second voltage signal lines in the corresponding group of second voltage signal lines to I second voltage signal supply lines in I×J second voltage signal supply lines respectively; and The second voltage signals are respectively provided from the I second voltage signal supply lines to the I second voltage signal lines in the corresponding group of second voltage signal lines.

28. The method according to claim 27, wherein: The corresponding light emitting control unit among the plurality of light emitting control units comprises Q groups of light emitting elements, a corresponding group among the Q groups of light emitting elements comprises K columns of light emitting elements, the corresponding group of second voltage signal lines comprises Q subgroups of second voltage signal lines, a corresponding subgroup among the Q subgroups of second voltage signal lines comprises K second voltage signal lines, Q is an integer greater than or equal to one, and K is an integer greater than or equal to one; The method further includes: Forming J rows of light emitting elements in the kth column of the K columns of light emitting elements, 1≤k≤K, and I=K×Q; In the corresponding row of light-emitting elements, the second ends of the light-emitting elements in the k-th column in the q-th group of the Q groups of light-emitting elements from the N light-emitting control units in the same row are electrically connected to the k-th second voltage signal line in the q-th subgroup of the K second voltage signal lines in the Q subgroups of the second voltage signal lines in the corresponding group, 1 ≤ q ≤ Q, and The second voltage signal is sequentially provided to the K second voltage signal lines.

29. The method according to claim 28, wherein: The (M×J) groups of second voltage signal lines include M levels of second voltage signal lines; a corresponding level among the M levels of second voltage signal lines includes J groups of second voltage signal lines; a corresponding group among the J groups of second voltage signal lines includes Q subgroups of second voltage signal lines; a corresponding subgroup among the Q subgroups of second voltage signal lines includes K second voltage signal lines; as well as The method further includes: Respectively electrically connect the second ends of the light emitting elements in the kth column of the qth group of the Q groups of light emitting elements from the N light emitting control units in the mth row of the multiple light emitting control units to the kth second voltage signal line of the Kth second voltage signal lines in the qth subgroup of the second voltage signal lines of the Q subgroups in the jth group of the Jth group of second voltage signal lines in the mth level of the M-level second voltage signal lines; and Second voltage signals are sequentially provided to the K second voltage signal lines in the qth subgroup of the Q subgroups of the jth group of the J groups of second voltage signal lines in the mth stage of the M-stage second voltage signal lines.

30. The method of claim 29, wherein: The I×J second voltage signal supply lines are grouped into Q groups of second voltage signal supply lines, Q is an integer greater than or equal to one; a corresponding group in the Q groups of second voltage signal supply lines includes K subgroups of second voltage signal supply lines, K is an integer greater than or equal to one; a corresponding subgroup in the K subgroups of second voltage signal supply lines includes J second voltage signal supply lines; The method further includes: A second voltage signal is provided to the second voltage signal supply lines of the K subsets one by one and sequentially.

31. A method for manufacturing a light-emitting substrate, comprising: forming a plurality of light emitting control units arranged in M ​​rows and N columns, M being an integer greater than or equal to one, and N being an integer greater than or equal to one, wherein a corresponding one of the plurality of light emitting control units comprises a plurality of light emitting elements arranged in J rows and I columns, J being an integer greater than or equal to one, and I being an integer greater than or equal to one; the i-th column of the I-column light emitting elements comprises the J-row light emitting elements, 1≤i≤I; forming (M×J) first voltage signal lines; as well as forming (M×J) groups of second voltage signal lines; forming (I×J) second voltage signal supply lines; Wherein, forming the plurality of light emitting control units comprises: Transferring the micro light emitting diode to a backplane, in which the (M×J) first voltage signal lines and the (M×J) groups of second voltage signal lines are formed; electrically connecting the first ends of the micro light emitting diodes in the corresponding row of light emitting elements to the corresponding first voltage signal lines among the (M×J) first voltage signal lines; and Electrically connecting the second ends of the micro light emitting diodes in the corresponding row of light emitting elements to I second voltage signal lines in the corresponding group of second voltage signal lines in the (M×J) groups of second voltage signal lines; The I second voltage signal lines in the corresponding group of second voltage signal lines are respectively connected to a group of I second voltage signal supply lines.

32. The method according to claim 31, before transferring the micro LED to the backplane, the method further comprises at least one of the following steps: measuring the resistance between two opposite ends of the corresponding first voltage signal line; measuring the resistance between two opposite ends of the corresponding second voltage signal line; or The resistance between the respective end of the respective first voltage signal line and the respective end of the respective second voltage signal line is measured.

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