WO2023226017A1 - 发光基板及显示装置 - Google Patents

发光基板及显示装置 Download PDF

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Publication number
WO2023226017A1
WO2023226017A1 PCT/CN2022/095701 CN2022095701W WO2023226017A1 WO 2023226017 A1 WO2023226017 A1 WO 2023226017A1 CN 2022095701 W CN2022095701 W CN 2022095701W WO 2023226017 A1 WO2023226017 A1 WO 2023226017A1
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WIPO (PCT)
Prior art keywords
light
emitting
sub
same
positive voltage
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PCT/CN2022/095701
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English (en)
French (fr)
Inventor
杨明
刘立伟
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京东方科技集团股份有限公司
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Application filed by 京东方科技集团股份有限公司 filed Critical 京东方科技集团股份有限公司
Priority to PCT/CN2022/095701 priority Critical patent/WO2023226017A1/zh
Priority to CN202280001491.4A priority patent/CN117795400A/zh
Publication of WO2023226017A1 publication Critical patent/WO2023226017A1/zh

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    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices

Definitions

  • the present disclosure relates to the field of display technology, and in particular to a light-emitting substrate and a display device.
  • Multi-light area direct-lit small or micro light-emitting diode (mini/micro LED) light sources are used as light sources for display devices, which can significantly improve the dynamic contrast of display devices and achieve HDR display, and have become a research hotspot in recent years.
  • mini/micro LED multi-zone direct-type small or micro light-emitting diodes
  • As a light source for display devices multi-zone direct-type small or micro light-emitting diodes (mini/micro LED) light sources need to ensure brightness uniformity.
  • the voltage difference between the positive and negative electrodes of the two LEDs will cause a current difference, which will lead to a difference in LED brightness, ultimately leading to uneven brightness of the light source.
  • Embodiments of the present disclosure provide a light-emitting substrate and a display device.
  • the specific solutions are as follows:
  • An embodiment of the present disclosure provides a light-emitting substrate.
  • the light-emitting substrate has a light-emitting area and a peripheral area arranged around the light-emitting area.
  • the light-emitting substrate includes:
  • a plurality of light-emitting control units distributed in an array are located in the light-emitting area; each of the light-emitting control units includes at least one sub-light-emitting unit, and the plurality of light-emitting control units are divided into at least two areas;
  • At least two positive voltage lines are located in the peripheral area, and the at least two positive voltage lines are located on opposite sides of the plurality of light-emitting control units; wherein, each of the light-emitting control units located in the same area
  • the sub-light-emitting units are electrically connected to the same positive voltage line, and the sub-light-emitting units of the light-emitting control units located in different regions are electrically connected to different positive voltage lines.
  • the plurality of light-emitting control units are divided into two areas along the row direction, and the number of the positive voltage lines is two.
  • the positive voltage line is arranged symmetrically about the center of the light-emitting area.
  • the light-emitting control unit in each of the areas is divided into at least two sub-areas along the column direction, and all the areas located in the same sub-area are The sub-light-emitting units of the light-emitting control unit are electrically connected to the same positive voltage line, and the sub-light-emitting units of the light-emitting control unit located in different sub-regions are electrically connected to different positive voltage lines;
  • Each of the positive voltage lines corresponding to the light-emitting control unit in each of the regions extends in the column direction and is arranged in the row direction, and each of the positive voltage lines extends to the lead area of the peripheral area;
  • the resistance values of the positive voltage lines are the same.
  • each of the positive voltages in each of the regions, along the direction from large to small along the length of each of the positive voltage lines, each of the positive voltages The width of the line gradually decreases.
  • the length and width of each of the positive voltage lines are the same; wherein, the straight-line distance along the column direction
  • the shape of the longest positive voltage line is a straight line
  • the shape of each positive voltage line with a short straight line distance along the column direction is a polygonal line or a curve.
  • each of the positive voltage lines includes a first end located in the lead area and a second end away from the lead area; each The bottom edge of the last row of the light-emitting control units in the area is a first horizontal reference line, and the length of the first part of each positive voltage line between the first horizontal reference line and the first end Same as width;
  • the top edge of the last row of the sub-light-emitting units in the light-emitting control units in each of the sub-regions is a second horizontal reference line, and each of the positive voltage lines is located between the respective second horizontal reference line and the respective The second portion between the second ends is of the same length and width;
  • the width of each third part decreases sequentially along the length of each third part from large to small.
  • the length and width of each of the third parts are the same, the shape of the third part with the longest straight line distance along the column direction is a straight line, and the shape of each of the third parts with the short straight line distance along the column direction is The shape of the three parts is polyline or curve.
  • the above-mentioned light-emitting substrate provided by the embodiment of the present disclosure further includes a plurality of connection lines extending along the row direction, and each of the positive voltage lines is connected to the corresponding connection line through the corresponding connection line.
  • the sub-light-emitting units are electrically connected, and the resistance values of the connecting lines are the same.
  • the light-emitting control unit for each of the regions is divided into at least two sub-regions along the column direction, and all of the sub-regions of each of the sub-regions are
  • the connection line electrically connected to the light-emitting control unit includes a first sub-connection line located in the light-emitting area and a second sub-connection line located in the peripheral area;
  • the lengths and widths of the second sub-connection lines corresponding to the light-emitting control units in different sub-regions are sequentially reduced;
  • the second sub-connection lines corresponding to the light-emitting control units in different sub-regions have the same length and width, and the shape of the second sub-connection line with the longest straight line distance along the row direction is: Straight lines, and the shape of each second sub-connection line with a short straight line distance along the row direction is a polyline or a curve.
  • the above-mentioned light-emitting substrate provided by the embodiment of the present disclosure also includes a plurality of negative voltage lines, and each of the light-emitting control units is electrically connected to at least one of the negative voltage lines.
  • the light-emitting control unit is electrically connected to different negative voltage lines.
  • the negative voltage lines are led from the light-emitting area to the lead area of the peripheral area, and the resistances of each negative voltage line are the same.
  • each of the negative voltage lines includes a first sub-voltage line located in the light-emitting area and a second sub-voltage line located in the lead area. lines, the resistance values of each of the first sub-voltage lines are the same, and the resistance values of each of the second sub-voltage lines are the same.
  • the width of the first sub-voltage line with a longer length is greater than the width of the first sub-voltage line with a shorter length
  • each of the first sub-voltage lines are the same, wherein the shape of the first sub-voltage line with the longest straight line distance along the column direction is a straight line, and the straight line distance along the column direction is shorter.
  • the shape of the first sub-voltage line is a polyline or a curve.
  • the width of the second sub-voltage line with a longer length is greater than the width of the second sub-voltage line with a shorter length
  • each second sub-voltage line includes a first vertical portion connected to the first sub-voltage line, and a first vertical portion connected to the second sub-voltage line.
  • the inclined part and the second vertical part connected to the inclined part, the length and width of each first vertical part are the same, the length and width of each second vertical part are the same, the longest length
  • the shape of the inclined portion is a straight line, and the shape of each of the inclined portions with a shorter length is a polyline or a curve.
  • each of the light-emitting control units includes a plurality of sub-light-emitting units of different light-emitting colors distributed in an array, and all the sub-light-emitting units located in the same column
  • the sub-light-emitting units have the same light-emitting color, and the sub-light-emitting units of different light-emitting color columns are alternately arranged along the row direction, and the sub-light-emitting units of each light-emitting color include m rows and n columns;
  • the number of connection lines extending along the row direction that are electrically connected to the positive voltage line is p, 1 ⁇ p ⁇ m, p is a positive integer, and m/p is an integer. ;
  • m/p sub-light-emitting units are connected in series;
  • the number of negative voltage lines included in each light-emitting control unit is at least the same as the number of light-emitting colors.
  • the sub-light-emitting units include a red sub-light-emitting unit, a green sub-light-emitting unit and a blue sub-light-emitting unit.
  • each of the light-emitting control units includes m rows and n columns of the sub-light-emitting units of the same light-emitting color distributed in an array, and each In the light-emitting control unit, the number of connection lines extending along the row direction that are electrically connected to the positive voltage line is p, 1 ⁇ p ⁇ m, p is a positive integer, and m/p is an integer;
  • m/p sub-light-emitting units are connected in series.
  • the sub-light-emitting unit is a blue sub-light-emitting unit.
  • the sub-light-emitting unit is a Mini LED or a Micro LED.
  • an embodiment of the present disclosure also provides a display device, including: the light-emitting substrate described in any one of the above provided by the embodiment of the present disclosure.
  • Figure 1 is a schematic plan view of a light-emitting substrate provided by an embodiment of the present disclosure
  • Figure 2 is a schematic plan view of a lighting control unit in Figure 1;
  • Figure 3 is another planar structural schematic diagram of a lighting control unit in Figure 1;
  • Figure 4 is a schematic plan view of another light-emitting substrate provided by an embodiment of the present disclosure.
  • Figure 5 is a schematic plan view of another light-emitting substrate provided by an embodiment of the present disclosure.
  • Figure 6 is another planar structural schematic diagram of a lighting control unit in Figure 1;
  • Figure 7 is another planar structural schematic diagram of a lighting control unit in Figure 1;
  • Figure 8 is a schematic plan view of another light-emitting substrate provided by an embodiment of the present disclosure.
  • Figure 9 is a schematic plan view of another light-emitting substrate provided by an embodiment of the present disclosure.
  • Figures 10A-10D are schematic structural diagrams of several methods for reducing positive electrode IR drop provided by embodiments of the present disclosure.
  • 11A-11B are several structural schematic diagrams of IR drop for reducing horizontal connection lines provided by embodiments of the present disclosure.
  • 12A-12D are schematic structural diagrams of several methods for reducing negative electrode IR drop provided by embodiments of the present disclosure.
  • an embodiment of the present disclosure provides a light-emitting substrate.
  • the light-emitting substrate has a light-emitting area AA and a peripheral area BB arranged around the light-emitting area AA.
  • the light-emitting substrate specifically includes:
  • Each light-emitting control unit CU includes at least one sub-light-emitting unit P1.
  • each light-emitting control unit CU includes a plurality of sub-light-emitting units P1 distributed in an array; as shown in As shown in Figures 4 and 5, multiple light-emitting control units CU are divided into at least two areas.
  • Figures 4 and 5 take the multiple light-emitting control units CU being divided into two areas Q1 and Q2 as an example;
  • At least two positive voltage lines (G1 and G1') are located in the peripheral area BB, and at least two positive voltage lines (G1 and G1') are located on opposite sides of the plurality of light-emitting control units CU; wherein, the two positive voltage lines (G1 and G1') located in the same area
  • the sub-light-emitting units of each light-emitting control unit are electrically connected to the same positive voltage line, and the sub-light-emitting units of the light-emitting control units located in different areas are electrically connected to different positive voltage lines; for example, the sub-light-emitting units of each light-emitting control unit CU in the Q1 area P1 is electrically connected to the same positive voltage line G1, and the sub-light-emitting unit P1 of each light-emitting control unit CU in the Q2 area is electrically connected to the same positive voltage line G1'.
  • the above-mentioned light-emitting substrate divideds multiple light-emitting control units into at least two areas, and then each area uses a different positive voltage line to load the positive voltage of the light-emitting control unit in the corresponding area, so that each positive electrode
  • the number of sub-light-emitting units driven by the voltage line is at least halved, which can effectively reduce the positive IR drop caused by the positive voltage line between the sub-light-emitting units, greatly reducing the difference in the positive electrode voltage of each sub-light-emitting unit, thereby improving the efficiency of each area of the light-emitting substrate. Uniformity of luminous brightness.
  • the sub-light-emitting units can be inorganic light-emitting diodes with a size of one hundred microns and below, where the inorganic light-emitting diodes with a size of one hundred microns and below can be mini LEDs. , or it can be micro LED.
  • the size range of mini LED is about 100 ⁇ m ⁇ 600 ⁇ m, and the size of micro LED is less than 100 ⁇ m.
  • the light-emitting substrate provided by the embodiments of the present disclosure may be configured to be used for display or to provide backlight.
  • each light-emitting control unit CU may include a plurality of sub-light-emitting units of different light-emitting colors distributed in an array.
  • R-LED, G-LED, B-LED taking the number of R-LED, G-LED, and B-LED as m (row) * n (column) respectively; among them, the sub-units located in the same column
  • the light-emitting units emit light of the same color, and the sub-light-emitting units of columns with different light-emitting colors are alternately arranged along the row direction.
  • the sub-light-emitting unit can include a red sub-light-emitting unit, a green sub-light-emitting unit and a blue sub-light-emitting unit, that is, the light-emitting substrate uses RGB three primary color LEDs to directly mix light into white light; of course, the sub-light-emitting unit can also include other colors. Sub-emitting units such as white and yellow.
  • FIG. 6 is a schematic diagram of the LED series-parallel connection method in each lighting control unit CU. It is assumed that in each lighting control unit CU, the number of connecting lines H0 extending along the row direction X that are electrically connected to the positive voltage line G1 is p, and p The connecting line H0 is connected outside or inside the light-emitting area AA; 1 ⁇ p ⁇ m, p is a positive integer, and m/p is an integer; m sub-light-emitting units of the same light-emitting color in the same column (such as the same column of R-LEDs) , m/p LEDs are connected in series; it can be seen that in the same lighting control unit CU, the number of parallel-connected LEDs of the same color is m*n/p; each lighting control unit CU has p groups of horizontal negative connection lines (R0, G0, B0) ; The horizontal wiring corresponding to the same color LED in the p group of horizontal negative connecting lines (R0, G0, B0)
  • each light-emitting control unit CU is at least the same as the number of light-emitting colors, that is, there are at least three vertical negative voltage lines ( Rm, Gm, Bm).
  • the number of LEDs in series can be reduced accordingly.
  • two adjacent LEDs in the same column are connected in series and then in parallel, which can reduce the total cost of the light-emitting substrate. current.
  • the number of LEDs in each lighting control unit CU is determined, the greater the number of series-connected LEDs, the smaller the total current in the lighting control unit CU.
  • the total current of the lighting control unit CU is relatively small due to the fact that the current of each LED is small. This may make it difficult to drive the light emitting circuit.
  • this light-emitting substrate adopts a combination of series connection and parallel connection, which ensures that the LED can be driven to emit light while reducing power consumption.
  • each light-emitting control unit CU may include m (rows) n (columns) distributed in an array.
  • Sub-light-emitting units with the same light-emitting color such as blue sub-light-emitting unit B-LED
  • the light-emitting substrate can use blue LEDs with phosphors (or quantum dot materials) to mix the light into white light.
  • each light-emitting control unit CU the number of connection lines H0 extending along the row direction X that are electrically connected to the positive voltage line G1 is p, 1 ⁇ p ⁇ m, p is a positive integer, and m/p is an integer; the same In a row of m sub-light-emitting units (B-LEDs), m/p B-LEDs are connected in series; it can be seen that in the same lighting control unit CU, the number of parallel-connected LEDs of the same color is m*n/p; the memory of each lighting control unit CU is p group of horizontal negative connecting lines (B0); the horizontal wiring corresponding to the LED in the p group of horizontal negative connecting lines (B0) is connected to the vertical negative voltage line Bm, for example, all B0 are electrically connected to the vertical negative voltage line Bm . It can be seen that the number of negative voltage lines Bm included in each light-emitting control unit CU is at least one.
  • the number of LEDs connected in series in each column can be designed as needed.
  • the M (row)*N/2 (column) light-emitting control units CU included in the left area Q1 share the positive voltage line G1
  • the M (row)*N/2 (column) light-emitting control units included in the right area Q2 CU shares another positive voltage line G2 to achieve higher uniformity of luminous brightness of the light-emitting substrate.
  • Figure 5 is a schematic diagram of an implementation method for the light-emitting substrate according to an embodiment of the present disclosure to achieve higher luminous brightness uniformity. It is necessary to calculate the positive and negative values of the LEDs in the light-emitting control unit CU at different positions. There is a voltage difference between the two ends of the LED; since the internal negative voltage line of the lighting control unit CU can adopt a mesh design, in the embodiment of the present disclosure, the IR drop on the negative voltage line between the LEDs inside the lighting control unit CU is ignored.
  • the positive voltage lines G1 and G2 are independent of each other as an example.
  • the positive voltage lines G1 and G2 can also be merged (that is, electrically connected) from the center line of the light-emitting substrate, which is equivalent to starting from Both ends of the positive voltage lines G1 and G2 load positive voltages to the sub-light-emitting units of the same row at the same time.
  • the light-emitting control unit CU of each area is divided into at least two sub-areas (for example, Q1) along the column direction Y.
  • the sub-light-emitting units of the light-emitting control units located in the same sub-area are electrically connected to the same positive voltage line, and the sub-light-emitting units of the light-emitting control units located in different sub-areas are electrically connected.
  • the units are electrically connected to different positive voltage lines.
  • the sub-light-emitting unit P1 of the first row of light-emitting control unit CU in area Q1 is electrically connected to the positive voltage line G1,..., the sub-light-emitting unit P1 of the last row of light-emitting control unit CU is electrically connected to The positive voltage line GM is electrically connected; for example, the sub-light-emitting unit P1 of the first row of light-emitting control unit CU in the area Q2 is electrically connected to the positive voltage line G1',..., the sub-light-emitting unit P1 of the last row of light-emitting control unit CU is electrically connected to the positive voltage line Line GM' electrical connection;
  • the positive voltage lines corresponding to the light-emitting control units in each area extend in the column direction and are arranged in the row direction, and each positive voltage line extends to the lead area of the peripheral area; for example, the positive voltage lines corresponding to the light-emitting control unit CU in area Q1 (G1...GM) extend along the column direction Y and are arranged along the row direction X, and each positive voltage line (G1...GM) extends to the lead area of the peripheral area BB;
  • each positive voltage line G1...GM
  • the resistance values of each positive voltage line are the same, so that the positive IR drop 2 corresponding to each sub-region can be eliminated, and the positive IR drop corresponding to each sub-region is reduced accordingly, which can further improve the uniformity of the luminous brightness of the light-emitting substrate. .
  • FIG. 9 is a schematic diagram of another implementation method of the light-emitting substrate according to an embodiment of the present disclosure to achieve higher uniformity of luminous brightness; and each area (such as Q1) shown in FIG. 5 Sharing the same positive voltage line G1 is different.
  • one row of light areas or multiple rows of light areas share the positive electrode.
  • each row of lighting control unit CU has its own independent positive voltage line (G1...
  • ...GM electrical connection, that is, there are M positive voltage lines (G1...GM) in area Q1, and M positive voltage lines (G1'...GM') in area Q2;
  • the positive IR drop1 is the same as the positive IR drop1 shown in Figure 5, and will not be described in detail here;
  • the positive IR drop2 shown in Figure 9 is the voltage drop between each positive voltage input end and the respective horizontal positive intersection point, that is, G1_K in Figure 9,... , the voltage of GM_G decreases; as shown in Figure 9, at this time, each positive current decreases significantly.
  • each positive IR drop2 is equal; at this time, compared with the positive connection method shown in Figure 5, the positive IR drop2 shown in Figure 9 can be eliminated.
  • the length of the positive voltage line G1 corresponding to the light-emitting control unit CU in the first row is significantly longer than the length of the positive voltage line G1 corresponding to the light-emitting control unit CU in the M-th row.
  • each positive voltage line (G1...GM) in each area (such as Q1), along the length of each positive voltage line (G1...GM) from large to small direction, the width of each positive voltage line (G1...GM) can be reduced sequentially, that is, the width of the G1_E segment needs to be greater than the width of the GM_J segment, as shown in Figure 10A.
  • Figure 10A alone shows that the width of the G1_E segment is greater than the width of the GM_J segment. .
  • each positive voltage line (G1'...GM')
  • the width of each positive voltage line (G1'...GM') can be reduced sequentially, that is, G1'
  • the width of the _E' segment needs to be greater than the width of the GM'_J' segment, as shown in Figure 10A.
  • Figure 10A also shows that the width of the G1'_E' segment is greater than the width of the GM'_J' segment.
  • the length of the positive voltage line G1 corresponding to the light-emitting control unit CU in the first row is significantly longer than the length of the positive voltage line G1 corresponding to the light-emitting control unit CU in the M-th row.
  • the length of the positive voltage line GM so in order to realize resistance wiring such as each positive voltage line (G1...GM), the length and width of each positive voltage line (G1...GM, G1'...GM') can be the same; where, along the column
  • the shape of the positive voltage lines (G1, G1') with the longest straight line distance in the direction Y is a straight line
  • the shape of each positive voltage line (GM, GM') with the short straight line distance in the column direction Y can be a polyline, as shown in Figure 10B 10B separately illustrates the shapes of G1, GM, G1' and GM'.
  • the shape of each positive voltage line (for example, GM, GM') with a short straight line distance along the column direction Y can also be a curve.
  • each positive voltage line includes a first end (G1) located in the lead area and a second end away from the lead area.
  • the bottom edge of the last row of light-emitting control units CU in each area is the first horizontal reference line ST, and the positive voltage lines (such as G1, GM) are located between the first horizontal reference line ST and the first horizontal reference line ST.
  • the length and width of the first part (S_G1 and T_GM) between one end (G1) are the same, that is, the length and width of the S_G1 segment and the T_GM segment can be set to the same;
  • the top edge of the last row of sub-light-emitting units in each sub-region light-emitting control unit is the second horizontal reference line (for example, the horizontal lines where KZ and GH are located), and the positive voltage lines are located on the respective second horizontal reference lines and the respective third
  • the length and width of the second part between the two ends are the same.
  • the second part EK segment of the positive voltage line G1 between the second horizontal reference line KZ and the second terminal E is located at the second level of the positive voltage line GM.
  • the length and width of the second section JG between the reference line GH and the second end J are the same;
  • each third part of each positive voltage line except the first part and the second part along the direction from large to small in the length of each third part, the width of each third part decreases sequentially, for example, the width of each third part of the positive voltage line G1 except the first part S_G1 segment and the third part KS segment of the second part EK segment, the positive voltage line GM except the first part T_GM segment and the second part JG segment and the third part GT segment, along each third part (KS segment and GT segment)
  • the width of each third part (KS segment and GT segment) decreases in sequence, that is, the width of the KS segment is greater than the width of the GT segment, as shown in Figure 10C; similarly, the width of the K'S' segment The width is greater than the width of the G'T' segment; or, as shown in Figure 10D, the length and width of each third part (KS segment and GT segment) are the same, and the third part (KS) with the longest straight line distance along the column direction Y segments and K'S
  • the light emitting control unit CU for each area (for example, Q1, Q2) is divided into at least two sub-areas along the column direction Y (this disclosure uses each row in the Q1 area and the Q2 area as one sub-area ), the lengths of the connecting lines electrically connected to the LEDs in each row of the same sub-region are the same, and the connecting lines electrically connected to the light-emitting control units in each sub-region include the first sub-connecting line located in the light-emitting area and the second sub-connecting line located in the peripheral area, for example
  • the connection line H0 electrically connected to the first row LEDs of the first row lighting control unit CU includes a first sub-connection line UL located in the light-emitting area AA and a second sub-connection line EU located in the peripheral area BB.
  • the M-th row lighting control unit CU The connection line H0 electrically connected to the first row of LEDs includes the first sub-connection line V_V0 located in the light-emitting area AA and the second sub-connection line JV located in the peripheral area BB. It can be seen that the length of the V_V0 segment is the same as the length of the UL segment , the length of the EU segment is greater than the length of the JV segment; in order to make the resistance of the EL segment the same as the resistance of the J_V0 segment, the resistance of the EU segment needs to be equal to the resistance of the JV segment.
  • Figure 11A separately illustrates the EL segment, E'L' segment, J_V0 segment and J'_V0' segment, along the column direction Y, different sub-regions (such as the first row).
  • the length of each second sub-connection line (EU segment and JV segment) corresponding to the lighting control unit CU and the lighting control unit CU of the Mth row is reduced in sequence, and the width is reduced in sequence, thereby achieving the resistance of the EU segment It is equal to the resistance of the JV segment, that is, the resistance of the EL segment is the same as the resistance of the J_V0 segment; similarly, the lengths of the E'U' segment and the J'V' segment decrease in sequence, and the widths decrease in sequence.
  • Figure 11B separately illustrates the EL segment, E'L' segment, J_V0 segment and J'_V0' segment, along the column direction Y, different sub-regions (such as the first The length and width of each second sub-connection line (EU segment, JV segment, E'U' segment and J'V' segment) corresponding to the lighting control unit CU of the row lighting control unit CU and the Mth row lighting control unit CU) They are all the same.
  • the shape of V') can be a polyline.
  • the shape of each second sub-connection line (JV, J’V’) with a short straight line distance along the row direction X can also be a curve.
  • each positive voltage line and the horizontal connection line H0 in the structure shown in FIG. 8 is the same as that in FIG. 9 , and will not be described again here.
  • FIG. 11A and FIG. 11B are only for illustrating the implementation when the resistances of the connection lines H0 in the row direction are the same.
  • the structure of the positive voltage lines (G1...GM) in the column direction in FIG. 11A and FIG. 11B It can be any one of Figures 10A to 10D.
  • Figures 10A to 11B provided by the embodiment of the present disclosure solve the problem of the positive electrode IR drop of the LED in the light-emitting area AA.
  • it is not limited to the several implementations listed in the embodiment of the present disclosure; as long as the voltage characteristics of each positive electrode can be made
  • the resistance values of the connecting wires are the same, and they all fall within the protection scope of the embodiments of the present disclosure.
  • each light-emitting control unit CU is electrically connected to at least one negative voltage line Bm, the length of the negative voltage line Bm corresponding to the light-emitting control unit CU in the same row is the same, but the length of the negative voltage line Bm corresponding to the light-emitting control unit CU in different rows is the same.
  • the length of the negative voltage line Bm is different.
  • the above-mentioned light-emitting substrate provided by the embodiment of the present disclosure also includes a plurality of negative voltage lines lines (Rm, Gm, Bm), each light-emitting control unit CU is electrically connected to at least three negative voltage lines (Rm, Gm, Bm), different light-emitting control units CU are connected to different negative voltage lines (Rm, Gm, Bm) Electrical connection, the negative voltage lines (Rm, Gm, Bm) are led from the light-emitting area AA to the lead area of the peripheral area BB.
  • each negative voltage line (Rm, Gm, Bm) are the same; as shown in Figure 5 and Figure 9 , also includes a plurality of negative voltage lines Bm, each light-emitting control unit CU is electrically connected to at least one negative voltage line Bm, different light-emitting control units CU are electrically connected to different negative voltage lines Bm, the negative voltage line Bm is connected by the light-emitting area AA In the lead area leading to the peripheral area BB, the resistance values of each negative voltage line Bm are the same. In this way, the negative IR drop of each light-emitting control unit CU can be eliminated, which can further improve the uniformity of the light-emitting brightness of the light-emitting substrate.
  • each negative voltage line Bm includes a first sub-voltage line (A1_A10, B1_B10...C1_C10, D1_D10) located in the light-emitting area AA. , A1'_A10', B1'_B10'...C1'_C10', D1'_D10') and the second sub-voltage line located in the lead area (A1_A2, B1_B2...C1_C2, D1_D2, A1'_A2', B1'_B2'...
  • each first sub-voltage line A1_A10, B1_B10...C1_C10, D1_D10, A1'_A10', B1'_B10'...C1'_C10', D1'_D10'
  • the resistance values of each second sub-voltage line A1_A2, B1_B2...C1_C2, D1_D2, A1'_A2', B1'_B2'...C1'_C2', D1'_D2') are the same.
  • Figure 12A separately illustrates each negative voltage line Bm, the longer first sub-voltage line (B1_B10, D1_D10, B1' _B10', D1'_D10') have a width greater than the width of the first sub-voltage lines (A1_A10, C1_C10, A1'_A10', C1'_C10') with a smaller length, thereby achieving each first sub-voltage line (A1_A10, B1_B10 ...C1_C10, D1_D10, A1'_A10', B1'_B10'...C1'_C10', D1'_D10') have the same resistance value.
  • each first sub-voltage line (A1_A10, B1_B10...C1_C10, D1_D10, A1'_A10', B1'_B10'...C1'_C10', D1'_D10') are the same, Among them, the shape of the first sub-voltage lines (B1_B10, D1_D10, B1'_B10', D1'_D10') with the longest straight line distance along the column direction Y is a straight line, and the shape of the first sub-voltage line with the short straight line distance along the column direction Y is The shape of (A1_A10, C1_C10, A1'_A10', C1'_C10') can be a polyline. Of course, the shape of the first sub-voltage lines (A1_A10, C1_C10, A1’_A10’, C1’_C10’) with a shorter straight line distance
  • Figure 12C separately illustrates each negative voltage line Bm, the longer second sub-voltage line (A1_A2, B1_B2, C1_C2,
  • the width of A1'_A2', B1'_B2', C1'_C2') is greater than the width of the second sub-voltage line (D1_D2, D1'_D2') with a smaller length, and the width of A1_A2, B1_B2, C1_C2 decreases in sequence, A1
  • each second sub-voltage line (A1_A2, B1_B2, C1_C2, A1'_A2', B1'_B2', C1'_C2') are the same, and the second sub-voltage line (A1_A2 , B1_B2, C1_C2, A1'_A2', B1'_B2', C1'_C2') including the first sub-voltage line (A1_A10, B1_B10...C1_C10, D1_D10, A1'_A10', B1'_B10'...C1'_C10' , D1'_D10') corresponding to the connected first vertical part (A1_Am, B1_Bm, C1_Cm, D1_Dm, A1'_Am', B1'_Bm', C1'_Cm', D1'_Dm'), and the first vertical part (A1_Am,
  • FIG. 12C and FIG. 12D are only for illustrating embodiments in which the resistance values of the second sub-voltage lines are the same.
  • the first sub-voltage line in FIG. 12C and FIG. 12D can be any of the ones in FIG. 11A and FIG. 11B A sort of.
  • Figures 12A to 12D provided by the embodiments of the present disclosure solve the problem of the negative electrode IR drop of the LED in the light-emitting area AA.
  • the LEDs of different lengths can also be used.
  • the length and width of each negative electrode voltage line are set to the same, the longer negative electrode voltage line is set as a straight line, and the shorter negative electrode voltage line is set as a broken line or curve; or the longer negative electrode voltage line can be set as a straight line.
  • the root is set to be thicker, and the shorter negative voltage line is set to be thinner; as long as the resistance of each negative voltage can be made the same, it falls within the scope of protection of the embodiments of the present disclosure.
  • the wiring method of setting the positive voltage line alone is used to reduce the positive IR drop, or the wiring method of setting the positive voltage line and the negative voltage line simultaneously is used to reduce the positive and negative IP drop.
  • the wiring method of setting the negative voltage line is used to reduce the positive IR drop
  • the wiring method of setting the positive voltage line and the negative voltage line simultaneously is used to reduce the positive and negative IP drop.
  • the wiring method of setting the negative voltage line separately please refer to the above description and will not be done here. Repeat.
  • the embodiments of the present disclosure effectively reduce the positive IR drop between LEDs by adjusting the width or length of the positive voltage line and the negative voltage line of the light-emitting substrate, and through the above design of the positive voltage line and negative voltage line, and make the positive IR drop between LEDs effectively reduced.
  • the negative electrode IR drop is effectively reduced, so that the LED positive and negative electrode IR drop in different areas of the light-emitting substrate is significantly reduced, and the uniformity of the luminous brightness of the light-emitting substrate is significantly improved.
  • an embodiment of the present disclosure also provides a display device, including the above-mentioned light-emitting substrate provided by an embodiment of the present disclosure. Since the principle of solving the problem of the display device is similar to that of the aforementioned light-emitting substrate, the implementation of the display device can refer to the implementation of the aforementioned light-emitting substrate, and repeated details will not be repeated.
  • the display device can be: a mobile phone, a tablet computer, a television, a monitor, a notebook computer, a digital photo frame, a navigator, or any other product or component with display or touch functions.
  • the above-mentioned display device provided by the embodiment of the present disclosure may be a liquid crystal display device.
  • the above-mentioned display device provided by the embodiments of the present disclosure may also include other functional structures well known to those skilled in the art, which will not be described in detail here.
  • Embodiments of the present disclosure provide a light-emitting substrate and a display device by dividing multiple light-emitting control units into at least two areas, and then each area uses different positive voltage lines to load positive voltages to the light-emitting control units in the corresponding areas, so that The number of sub-light-emitting units driven by each positive voltage line is at least halved, which can effectively reduce the positive IR drop caused by the positive voltage line between sub-light-emitting units, greatly reducing the difference in positive voltage of each sub-light-emitting unit, thereby improving The uniformity of luminous brightness in each area of the light-emitting substrate.

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Abstract

一种发光基板及显示装置，该发光基板具有发光区（AA）和围绕发光区（AA）设置的周边区（BB）。发光基板包括阵列分布的多个发光控制单元（CU），位于发光区（AA）。每一发光控制单元（CU）包括至少一个子发光单元（P1），多个发光控制单元（CU）划分为至少两个区域（Q1，Q2）。至少两条正极电压线（G1，G1'）位于周边区（BB），且至少两条正极电压线（G1，G1'）分别位于多个发光控制单元（CU）的相对两侧，位于同一区域的各发光控制单元的子发光单元与同一条正极电压线电连接，位于不同区域的发光控制单元的子发光单元与不同条正极电压线电连接，使得各子发光反应的正极电压差异大大降低，从而提高发光基板各区域发光亮度的均一性。

Description

发光基板及显示装置 技术领域
本公开涉及显示技术领域，特别涉及一种发光基板及显示装置。
背景技术
多灯区直下式小型或微型发光二极管(mini/micro LED)光源作为显示器件光源，可显著提升显示器件动态对比度，实现HDR显示，近年来成为研究热点。作为显示器件光源，多灯区直下式小型或微型发光二极管(mini/micro LED)光源需保证亮度均一性。但是作为电流驱动型发光器件，两颗LED正负极间电压差异将引起电流差异，从而带来LED亮度差异，最终导致光源亮度不均一。
发明内容
本公开实施例提供了一种发光基板及显示装置，具体方案如下：
本公开实施例提供的一种发光基板，所述发光基板具有发光区和围绕所述发光区设置的周边区，所述发光基板包括：
阵列分布的多个发光控制单元，位于所述发光区；每一所述发光控制单元包括至少一个子发光单元，所述多个发光控制单元划分为至少两个区域；
至少两条正极电压线，位于所述周边区，且所述至少两条正极电压线分别位于所述多个发光控制单元的相对两侧；其中，位于同一所述区域的各所述发光控制单元的子发光单元与同一条所述正极电压线电连接，位于不同所述区域的所述发光控制单元的子发光单元与不同条所述正极电压线电连接。
在一种可能的实现方式中，在本公开实施例提供的上述发光基板中，所述多个发光控制单元沿行方向划分为两个区域，所述正极电压线的数量为两条，两条所述正极电压线关于所述发光区的中心对称设置。
在一种可能的实现方式中，在本公开实施例提供的上述发光基板中，每一所述区域的所述发光控制单元沿列方向划分为至少两个子区域，位于同一所述子区域的所述发光控制单元的子发光单元与同一条所述正极电压线电连接，位于不同所述子区域的所述发光控制单元的子发光单元与不同条所述正极电压线电连接；
每一所述区域的所述发光控制单元对应的各所述正极电压线沿列方向延伸且沿所述行方向排列，且各所述正极电压线延伸至所述周边区的引线区；
各所述正极电压线的电阻值相同。
在一种可能的实现方式中，在本公开实施例提供的上述发光基板中，每一所述区域中，沿各所述正极电压线的长度由大到小的方向上，各所述正极电压线的宽度依次降低。
在一种可能的实现方式中，在本公开实施例提供的上述发光基板中，每一所述区域中，各所述正极电压线的长度和宽度均相同；其中，沿所述列方向直线距离最长的所述正极电压线的形状为直线，沿所述列方向直线距离较短的各所述正极电压线的形状为折线或曲线。
在一种可能的实现方式中，在本公开实施例提供的上述发光基板中，各所述正极电压线包括位于所述引线区的第一端以及远离所述引线区的第二端；每一所述区域中的最后一行所述发光控制单元的底边为第一水平参考线，各所述正极电压线的位于所述第一水平参考线和所述第一端之间的第一部分的长度和宽度相同；
每一所述子区域所述发光控制单元中的最后一行所述子发光单元的顶边为第二水平参考线，各所述正极电压线的位于各自所述第二水平参考线和各自所述第二端之间的第二部分的长度和宽度相同；
各所述正极电压线的除所述第一部分和所述第二部分的第三部分，沿各所述第三部分的长度由大到小的方向上，各所述第三部分的宽度依次降低；或，各所述第三部分的长度和宽度均相同，沿所述列方向直线距离最长的所述第三部分的形状为直线，沿所述列方向直线距离较短的各所述第三部分的 形状为折线或曲线。
在一种可能的实现方式中，在本公开实施例提供的上述发光基板中，还包括沿所述行方向延伸的多条连接线，各所述正极电压线通过对应的所述连接线与所述子发光单元电连接，各所述连接线的电阻值相同。
在一种可能的实现方式中，在本公开实施例提供的上述发光基板中，针对每一所述区域的所述发光控制单元沿列方向划分为至少两个子区域，各所述子区域的所述发光控制单元电连接的所述连接线包括位于所述发光区的第一子连接线以及位于所述周边区的第二子连接线；
沿所述列方向上，不同所述子区域的所述发光控制单元对应的各所述第二子连接线的长度依次降低，且宽度依次降低；
或，不同所述子区域的所述发光控制单元对应的各所述第二子连接线的长度和宽度均相同，沿所述行方向直线距离最长的所述第二子连接线的形状为直线，沿所述行方向直线距离较短的各所述第二子连接线的形状为折线或曲线。
在一种可能的实现方式中，在本公开实施例提供的上述发光基板中，还包括多条负极电压线，每一所述发光控制单元至少与一条所述负极电压线电连接，不同的所述发光控制单元与不同的所述负极电压线电连接，所述负极电压线由所述发光区引出至所述周边区的引线区，各所述负极电压线的阻值相同。
在一种可能的实现方式中，在本公开实施例提供的上述发光基板中，各所述负极电压线包括位于所述发光区的第一子电压线以及位于所述引线区的第二子电压线，各所述第一子电压线的电阻值相同，各所述第二子电压线的电阻值相同。
在一种可能的实现方式中，在本公开实施例提供的上述发光基板中，长度较长的所述第一子电压线的宽度大于长度较小的所述第一子电压线的宽度；
或，各所述第一子电压线的长度和宽度均相同，其中，沿所述列方向直线距离最长的所述第一子电压线的形状为直线，沿所述列方向直线距离较短 的所述第一子电压线的形状为折线或曲线。
在一种可能的实现方式中，在本公开实施例提供的上述发光基板中，长度较长的所述第二子电压线的宽度大于长度较小的所述第二子电压线的宽度；
或，各所述第二子电压线的长度和宽度均相同，所述第二子电压线包括与所述第一子电压线连接的第一竖直部、与所述第一竖直部连接的倾斜部以及与所述倾斜部连接的第二竖直部，各所述第一竖直部的长度和宽度均相同，各所述第二竖直部的长度和宽度均相同，长度最长的所述倾斜部的形状为直线，长度较短的各所述倾斜部的形状为折线或曲线。
在一种可能的实现方式中，在本公开实施例提供的上述发光基板中，每一所述发光控制单元包括呈阵列分布的多个不同发光颜色的所述子发光单元，位于同一列的所述子发光单元的发光颜色相同，不同发光颜色列的所述子发光单元沿所述行方向交替排列，每一种发光颜色的所述子发光单元均包括m行n列个；
每一所述发光控制单元内，与所述正极电压线电连接的沿所述行方向延伸的连接线的数量为p根，1≤p≤m，p为正整数，且m/p为整数；
同一列m个相同发光颜色的所述子发光单元中，m/p个所述子发光单元串联；
每一所述发光控制单元内包括的负极电压线的数量至少与发光颜色的数量相同。
在一种可能的实现方式中，在本公开实施例提供的上述发光基板中，所述子发光单元包括红色子发光单元、绿色子发光单元和蓝色子发光单元。
在一种可能的实现方式中，在本公开实施例提供的上述发光基板中，每一所述发光控制单元包括呈阵列分布的m行n列个相同发光颜色的所述子发光单元，每一所述发光控制单元内，与所述正极电压线电连接的沿所述行方向延伸的连接线的数量为p根，1≤p≤m，p为正整数，且m/p为整数；
同一列m个所述子发光单元中，m/p个所述子发光单元串联。
在一种可能的实现方式中，在本公开实施例提供的上述发光基板中，所 述子发光单元为蓝色子发光单元。
在一种可能的实现方式中，在本公开实施例提供的上述发光基板中，所述子发光单元为Mini LED或Micro LED。
相应地，本公开实施例还提供了一种显示装置，包括：如本公开实施例提供的上述任一项所述的发光基板。
附图说明
图1为本公开实施例提供的一种发光基板的平面结构示意图；
图2为图1中一个发光控制单元的一种平面结构示意图；
图3为图1中一个发光控制单元的又一种平面结构示意图；
图4为本公开实施例提供的又一种发光基板的平面结构示意图；
图5为本公开实施例提供的又一种发光基板的平面结构示意图；
图6为图1中一个发光控制单元的又一种平面结构示意图；
图7为图1中一个发光控制单元的又一种平面结构示意图；
图8为本公开实施例提供的又一种发光基板的平面结构示意图；
图9为本公开实施例提供的又一种发光基板的平面结构示意图；
图10A-图10D为本公开实施例提供的降低正极IR drop的几种结构示意图；
图11A-图11B为本公开实施例提供的降低水平连接线的IR drop的几种结构示意图；
图12A-图12D为本公开实施例提供的降低负极IR drop的几种结构示意图。
具体实施方式
为使本公开实施例的目的、技术方案和优点更加清楚，下面将结合本公开实施例的附图，对本公开实施例的技术方案进行清楚、完整地描述。显然，所描述的实施例是本公开的一部分实施例，而不是全部的实施例。并且在不冲突的情况下，本公开中的实施例及实施例中的特征可以相互组合。基于所描述的本公开的实施例，本领域普通技术人员在无需创造性劳动的前提下所 获得的所有其他实施例，都属于本公开保护的范围。
除非另外定义，本公开使用的技术术语或者科学术语应当为本公开所属领域内具有一般技能的人士所理解的通常意义。本公开中使用的“包括”或者“包含”等类似的词语意指出现该词前面的元件或者物件涵盖出现在该词后面列举的元件或者物件及其等同，而不排除其他元件或者物件。“连接”或者“相连”等类似的词语并非限定于物理的或者机械的连接，而是可以包括电性的连接，不管是直接的还是间接的。“内”、“外”、“上”、“下”等仅用于表示相对位置关系，当被描述对象的绝对位置改变后，则该相对位置关系也可能相应地改变。
需要注意的是，附图中各图形的尺寸和形状不反映真实比例，目的只是示意说明本公开内容。并且自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。
本公开实施例提供了一种发光基板，如图1所示，该发光基板具有发光区AA和围绕发光区AA设置的周边区BB，该发光基板具体包括：
阵列分布的多个发光控制单元CU(灯区)，位于发光区AA，图1以包括M(行)*N(列)个灯区为例；如图2和图3所示，图2和图3分别为一个发光控制单元CU的结构示意图，每一发光控制单元CU包括至少一个子发光单元P1，本公开实施例以每一发光控制单元CU包括阵列分布的多个子发光单元P1；如图4和图5所示，多个发光控制单元CU划分为至少两个区域，本公开实施例图4和图5以多个发光控制单元CU划分为两个区域Q1和Q2为例；
至少两条正极电压线(G1和G1’)，位于周边区BB，且至少两条正极电压线(G1和G1’)分别位于多个发光控制单元CU的相对两侧；其中，位于同一区域的各发光控制单元的子发光单元与同一条正极电压线电连接，位于不同区域的发光控制单元的子发光单元与不同条正极电压线电连接；例如Q1区域的各发光控制单元CU的子发光单元P1与同一条正极电压线G1电连接，Q2区域的各发光控制单元CU的子发光单元P1与同一条正极电压线G1’电连接。
本公开实施例提供的上述发光基板，通过将多个发光控制单元划分为至少两个区域，然后各区域通过采用不同的正极电压线给对应区域的发光控制单元加载正极电压，这样每一根正极电压线驱动的子发光单元的数量至少减半，可以有效降低子发光单元之间由于正极电压线引起的正极IR drop，使得各子发光单元的正极电压差异大大降低，从而可以提高发光基板各区域发光亮度的均一性。
在具体实施时，在本公开实施例提供的上述发光基板中，子发光单元可以为尺寸在百微米及以下量级的无机发光二极管，其中百微米及以下量级的无机发光二极管可以是mini LED，也可以是micro LED。mini LED的尺寸范围约为100μm～600μm，micro LED的尺寸小于100μm。
在具体实施时，本公开实施例提供的发光基板可以被配置为用于显示或提供背光。
在具体实施时，在本公开实施例提供的上述发光基板中，如图2、图4和图6所示，每一发光控制单元CU可以包括呈阵列分布的多个不同发光颜色的子发光单元(R-LED、G-LED、B-LED)，以R-LED、G-LED、B-LED的数量分别为m(行)*n(列)个为例；其中，位于同一列的子发光单元的发光颜色相同，不同发光颜色列的子发光单元沿行方向交替排列。具体地，子发光单元可以包括红色子发光单元、绿色子发光单元和蓝色子发光单元，即发光基板利用RGB三基色LED来直接混光成白光；当然，子发光单元还可以包括其它颜色的子发光单元，例如白色和黄色。
图6为每一发光控制单元CU内LED串并联方式示意图，假定每一发光控制单元CU内，与正极电压线G1电连接的沿行方向X延伸的连接线H0的数量为p根，p根连接线H0在发光区AA外围或内部连接；1≤p≤m，p为正整数，且m/p为整数；同一列m个相同发光颜色的子发光单元(例如同一列R-LED)中，m/p个LED串联；可见，同一发光控制单元CU内，并联同色LED的数量为m*n/p；每个发光控制单元CU内存在p组水平负极连接线(R0、G0、B0)；p组水平负极连接线(R0、G0、B0)中对应同色LED的水 平走线连接至竖直方向负极电压线，例如所有R0与竖直方向的负极电压线Rm电连接，所有G0与竖直方向的负极电压线Gm电连接，所有B0与竖直方向的负极电压线Bm电连接。可见，每个发光控制单元CU内包括的负极电压线(Rm、Gm、Bm)的数量至少与发光颜色的数量相同，即每个发光控制单元CU内至少存在3条竖直方向负极电压线(Rm、Gm、Bm)。
如图6所示，为了提高LED良率，串联LED数量可相应减小，本公开实施例是以同一列中每相邻两个LED串联连接，然后并联连接，这样可以减小发光基板的总电流。当确定了每个发光控制单元CU内的LED数量时，串联连接的LED的数量越大，发光控制单元CU中的总电流越小。然而，当串联连接的LED的数量增加时，由于每个LED的电流小的事实，发光控制单元CU的总电流相对小。这可能使得难以驱动发光电路。与其中所有相同颜色的LED串联连接的发光基板相比，本发光基板采用串联连接和并联连接的组合，确保了可以驱动LED发光，同时降低了功耗。
在具体实施时，在本公开实施例中，假定图6所示的发光控制单元CU内的LED全部并联，p＝m，即每一行LED对应电连接一根正极电压线。
在具体实施时，在本公开实施例提供的上述发光基板中，如图3、图5和图7所示，每一发光控制单元CU可以包括呈阵列分布的m(行)n(列)个相同发光颜色的子发光单元(例如蓝色子发光单元B-LED)，即发光基板可以利用蓝光LED搭配荧光粉(或量子点材料)实现混光成白光。每一发光控制单元CU内，与正极电压线G1电连接的沿行方向X延伸的连接线H0的数量为p根，1≤p≤m，p为正整数，且m/p为整数；同一列m个子发光单元(B-LED)中，m/p个B-LED串联；可见，同一发光控制单元CU内，并联同色LED的数量为m*n/p；每个发光控制单元CU内存在p组水平负极连接线(B0)；p组水平负极连接线(B0)中对应LED的水平走线连接至竖直方向负极电压线Bm，例如所有B0与竖直方向的负极电压线Bm电连接。可见，每个发光控制单元CU内包括的负极电压线Bm的数量至少为一根。
在具体实施时，可以根据需要，设计每一列串联的LED数量。
在具体实施时，在本公开实施例提供的上述发光基板中，如图4和图5所示，以包括阵列分布的M(行)*N(列)个发光控制单元CU为例，多个发光控制单元CU沿行方向X划分为两个区域(Q1和Q2)，正极电压线(G1和G1’)的数量为两条，两条正极电压线(G1和G1’)关于发光区AA的中心对称设置。这样左侧区域Q1包括的M(行)*N/2(列)个发光控制单元CU共用正极电压线G1，右侧区域Q2包括的M(行)*N/2(列)个发光控制单元CU共用另一正极电压线G2，实现发光基板较高发光亮度均一性。
具体地，以图5所示的发光基板为例，图5为本公开实施例的发光基板实现较高发光亮度均一性的一种实现方法示意图，需要计算不同位置发光控制单元CU内LED正负极两端电压差；发光控制单元CU内部负极电压线由于可采用网状设计，在本公开实施例中，忽略发光控制单元CU内部LED间负极电压线上的IR drop。可以发现，针对区域Q1内，第M行发光控制单元CU左起第一列最后一个LED(即左下角LED)与第1行发光控制单元CU左起最后一列第一个LED(即Q1区域右上角LED)之间存在最大电压降IR drop_max；为了保证这两个LED间亮度均一性，需保证IR drop_max小于IR drop_spec(标准值)；此处，分类计算这两个LED之间的IR drop(正极IR drop1+正极IR drop2)：
(1)正极IR drop1：
此处，定义Q1区域左下角LED与右上角LED的正极间电压差为正极IR drop1；可以发现，EF与GH段IR drop可消除；FL间IR drop即为正极IR drop1；假定发光基板实现最大需求亮度L下，单颗LED最大电流为I0；可以发现，沿着电流方向，FL间正极电流，由(n*N/2-1)I0依次递减至I0；由此可得，正极IR drop1＝I0*Rp*(n*N/2-1)*n*N/4；此处，Rp为沿正极方向的两个LED间正极电压线G1的电阻；Rp＝◇*Px/Wp；其中，◇为正极电压线G1对应金属材料的方块电阻，Px为沿行方向X的相邻LED之间间距，Wp为正极线宽；此处，n*N/2为正极电压线G1驱动的LED数；由于发光区域AA采用两根正极电压线G1和G1’双边驱动，每一根正极电压线驱动的LED数减半，相应正 极IR drop1显著降低。
(2)正极IR drop2：
此处，定义Q1区域LED外围正极电压线G1的电压降为正极IR drop2，LED正极的总电流＝I0*m*n*M*N/2；该LED正极的总电流经由G1至G点传输，每经过一行LED，则向外分流I0*n*N/2；可以发现，沿着电流方向(从底部向顶部方向)，LED正极上的电流逐渐减小。可以发现正极IR drop2为多个电压降的总和；如图5所示，外围正极电压线GJ段对应的第一段IR drop＝R0*I0*(m*M-1)*n*N/2，其中R0为外围正极电压线GJ段对应的电阻；依次类推，外围正极电压线KE段对应的第(m*M-1)段IR drop＝R0*I0*n*N/2；以上m*M-1段电压降总和＝R0*I0*n*N/2*(1+…+M*m-1)＝R0*I0*n*N/2*(M*m-1)*M*m/2；此处，通过调节外围正极电压线宽度(即调节R0)，可有效降低该部分电压降IR drop2。
因此，由于区域Q1中存在最大电压降IR drop_max的两个LED之间的IR drop1和IR drop2降低，则其余任意两个LED之间的IR drop也会降低，从而整个区域Q1中的LED发光亮度较均一。区域Q2的降低IR drop的原理与区域Q1降低IR drop的原理相同，在此不做赘述。
需要说明的是，本公开实施例是以正极电压线G1和G2相互独立为例，当然，正极电压线G1和G2还可以从发光基板的中心线处合并(即电连接)，这样相当于从正极电压线G1和G2的两端同时给同一行子发光单元加载正极电压。
在具体实施时，在本公开实施例提供的上述发光基板中，如图8和图9所示，每一区域(例如Q1)的发光控制单元CU沿列方向Y划分为至少两个子区域(例如以区域Q1的每一行发光控制单元CU为一个子区域为例)，位于同一子区域的发光控制单元的子发光单元与同一条正极电压线电连接，位于不同子区域的发光控制单元的子发光单元与不同条正极电压线电连接，例如区域Q1中的第一行发光控制单元CU的子发光单元P1与正极电压线G1电连接，……，最后一行发光控制单元CU的子发光单元P1与正极电压线 GM电连接；例如区域Q2中的第一行发光控制单元CU的子发光单元P1与正极电压线G1’电连接，……，最后一行发光控制单元CU的子发光单元P1与正极电压线GM’电连接；
每一区域的发光控制单元对应的各正极电压线沿列方向延伸且沿行方向排列，且各正极电压线延伸至周边区的引线区；例如区域Q1的发光控制单元CU对应的各正极电压线(G1……GM)沿列方向Y延伸且沿行方向X排列，且各正极电压线(G1……GM)延伸至周边区BB的引线区；
各正极电压线(G1……GM)的电阻值相同，这样各个子区域对应的正极IR drop 2可消除，各个子区域对应的正极IR drop相应减小，可以进一步提高发光基板发光亮度的均一性。
具体地，以图9所示的发光基板为例，图9为本公开实施例的发光基板实现较高发光亮度均一性的又一种实现方法示意图；与图5所示各区域(例如Q1)共用同一根正极电压线G1不同，如图9所示，一行灯区或多行灯区共用正极；特别的，如图9所示，每行发光控制单元CU与各自独立的正极电压线(G1……GM)电连接，即区域Q1共存在M根正极电压线(G1……GM)，区域Q2共存在M根正极电压线(G1’……GM’)；采用图9所示方式，正极IR drop1与图5所示的正极IR drop1相同，在此不做赘述；图9所示的正极IR drop2为各正极电压输入端至与各自水平正极交点间的电压降低，即图9中G1_K，…，GM_G的电压降低；如图9所示，此时，各正极电流显著减小,例如，当每行发光控制单元CU分别对应独立正极电压线且正极电压线采用双边驱动时，正极最大电流＝I0*m*n*N/2；以G1_K为例，该正极电流经由G1至K点传输，G1至K点的IR drop2＝I0*m*n*N/2*Rp_G1K；其中，Rp_G1K为第一行发光控制单元CU对应的正极电压传输端G1至点K之间的电阻；同理，第M行发光控制单元CU对应的正极IR drop2＝I0*m*n*N/2*Rp_GMG,Rp_GMG为第M行发光控制单元CU对应的正极电压传输端GM至点G之间的电阻；可以发现，各行发光控制单元CU对应的正极IR drop2差异由各正极电压线的电阻造成，当各正极电压线(G1…GM)采用等电阻布线，即 Rp_G1K＝，…，＝Rp_GMG时，各正极IR drop2相等；此时，相对图5所示正极连接方式，图9所示的正极IR drop2可消除。
在具体实施时，在本公开实施例提供的上述发光基板中，如图9所示，由于第1行发光控制单元CU对应的正极电压线G1的长度显著大于第M行发光控制单元CU对应的正极电压线GM的长度，因此为了实现各正极电压线(G1…GM)等电阻布线，在每一区域(例如Q1)中，沿各正极电压线(G1…GM)的长度由大到小的方向上，各正极电压线(G1…GM)的宽度可以依次降低，即G1_E段的宽度需大于GM_J段的宽度，如图10A所示，图10A单独示意出G1_E段的宽度大于GM_J段的宽度。同理，在区域Q2中，沿各正极电压线(G1’…GM’)的长度由大到小的方向上，各正极电压线(G1’…GM’)的宽度可以依次降低，即G1’_E’段的宽度需大于GM’_J’段的宽度，如图10A所示，图10A还示意出G1’_E’段的宽度大于GM’_J’段的宽度。
在具体实施时，在本公开实施例提供的上述发光基板中，如图9所示，由于第1行发光控制单元CU对应的正极电压线G1的长度显著大于第M行发光控制单元CU对应的正极电压线GM的长度，因此为了实现各正极电压线(G1…GM)等电阻布线，各正极电压线(G1…GM、G1’…GM’)的长度和宽度可以均相同；其中，沿列方向Y直线距离最长的正极电压线(G1、G1’)的形状为直线，沿列方向Y直线距离较短的各正极电压线(GM、GM’)的形状可以为折线，如图10B所示，图10B单独示意出G1、GM、G1’和GM’的形状。当然，沿列方向Y直线距离较短的各正极电压线(例如GM、GM’)的形状还可以为曲线。
在具体实施时，在本公开实施例提供的上述发光基板中，如图9所示，由于第1行发光控制单元CU对应的正极电压线G1的长度显著大于第M行发光控制单元CU对应的正极电压线GM的长度，因此为了实现各正极电压线(G1…GM)等电阻布线，各正极电压线(例如G1)包括位于引线区的第一端(G1)以及远离引线区的第二端(E)；每一区域(例如Q1)中的最后一行发光控制单元CU的底边为第一水平参考线ST，各正极电压线(例如G1、 GM)的位于第一水平参考线ST和第一端(G1)之间的第一部分(S_G1和T_GM)的长度和宽度相同，即S_G1段和T_GM段的长度和宽度可以设置成相同；
每一子区域发光控制单元(例如)中的最后一行子发光单元的顶边为第二水平参考线(例如KZ、GH所在水平线)，各正极电压线的位于各自第二水平参考线和各自第二端之间的第二部分的长度和宽度相同，例如正极电压线G1的位于第二水平参考线KZ和第二端E之间的第二部分EK段与正极电压线GM的位于第二水平参考线GH和第二端J之间的第二部分JG段的长度和宽度相同；
各正极电压线的除第一部分和第二部分的第三部分，沿各第三部分的长度由大到小的方向上，各第三部分的宽度依次降低，例如正极电压线G1的除第一部分S_G1段和第二部分EK段的第三部分KS段，正极电压线GM的除第一部分T_GM段和第二部分JG段的第三部分GT段，沿各第三部分(KS段和GT段)的长度由大到小的方向上，各第三部分(KS段和GT段)的宽度依次降低，即KS段的宽度大于GT段的宽度，如图10C所示；同理，K’S’段的宽度大于G’T’段的宽度；或，如图10D所示，各第三部分(KS段和GT段)的长度和宽度均相同，沿列方向Y直线距离最长的第三部分(KS段和K’S’段)的形状为直线，沿列方向Y直线距离较短的各第三部分(例如GT段、G’T’段)的形状可以为折线。当然，沿列方向Y直线距离较短的各第三部分(例如GT段、G’T’段)的形状还可以为曲线。
另外，由图9可见，由于第1行发光控制单元CU的正极电压线G1相对第M行发光控制单元CU的正极电压线GM处于更外围，即EL、…、J_V0长度不一致，导致电阻不相同，因此为了实现各正极电压线电连接的水平方向的连接线(EL、…、J_V0)等电阻布线，在本公开实施例提供的上述发光基板中，如图9所示，还包括沿行方向X延伸的多条连接线H0，各正极电压线(例如G1)通过对应的连接线H0与子发光单元电连接，各连接线H0的电阻值相同，这样，除正极IR drop1之外，各个发光控制单元CU的其它正 极IR drop可完全消除，可以更进一步提高发光基板发光亮度的均一性。
具体地，如图9所示，针对每一区域(例如Q1、Q2)的发光控制单元CU沿列方向Y划分为至少两个子区域(本公开以Q1区域和Q2区域中每一行为一子区域)，同一子区域各行LED电连接的连接线的长度相同，各子区域的发光控制单元电连接的连接线包括位于发光区的第一子连接线以及位于周边区的第二子连接线，例如第一行发光控制单元CU的第一行LED电连接的连接线H0包括位于发光区AA的第一子连接线UL以及位于周边区BB的第二子连接线EU，第M行发光控制单元CU的第一行LED电连接的连接线H0包括位于发光区AA的第一子连接线V_V0以及位于周边区BB的第二子连接线JV，可以看出，V_V0段的长度与UL段的长度相同，EU段的长度大于JV段的长度；为了使得EL段的阻值与J_V0段的阻值相同，就需要EU段的阻值等于JV段的阻值。
在一种实施例中，如图11A所示，图11A单独示意出EL段、E’L’段、J_V0段与J’_V0’段，沿列方向Y上，不同子区域(例如第一行发光控制单元CU和第M行发光控制单元CU)的发光控制单元CU对应的各第二子连接线(EU段和JV段)的长度依次降低，且宽度依次降低，从而实现EU段的阻值等于JV段的阻值，即EL段的阻值与J_V0段的阻值相同；同理，E’U’段和J’V’段的长度依次降低，且宽度依次降低。
在又一种实施例中，如图11B所示，图11B单独示意出EL段、E’L’段、J_V0段与J’_V0’段，沿列方向Y上，不同子区域(例如第一行发光控制单元CU和第M行发光控制单元CU)的发光控制单元CU对应的各第二子连接线(EU段、JV段、E’U’段和J’V’段)的长度和宽度均相同，沿行方向X直线距离最长的第二子连接线(EU、E’U’)的形状为直线，沿行方向X直线距离较短的各第二子连接线(JV、J’V’)的形状可以为折线。当然，沿行方向X直线距离较短的各第二子连接线(JV、J’V’)的形状还可以为曲线。
需要说明的是，图8所示的结构中的各正极电压线和水平连接线H0的设置方式与图9相同，在此不做赘述。
需要说明的是，图11A和图11B仅是为了示意行方向的各连接线H0阻值相同时的实施方式，当然，图11A和图11B中列方向的正极电压线(G1…GM)的结构可以为图10A～图10D中任意一种。
因此，本公开实施例提供的图10A～图11B解决了发光区AA内LED存在的正极IR drop的问题，当然不限于本公开实施例列举的几种实施方式；只要能够使得各正极电压性和连接线的阻值相同，均属于本公开实施例保护的范围。
以图5和图9为例，由于各发光控制单元CU至少对应电连接一根负极电压线Bm，同一行发光控制单元CU对应的负极电压线Bm长度相同，但是不同行发光控制单元CU对应的负极电压线Bm长度不同，当由发光控制单元CU最底部LED向最顶部LED传输电流时，不同行的发光控制单元CU对应的负极电压线Bm将产生负极IR drop，发光基板的发光亮度均一性变差，因此为了实现不同行的发光控制单元CU对应的负极电压线Bm等电阻布线，在本公开实施例提供的上述发光基板中，如图4和图8所示，还包括多条负极电压线(Rm、Gm、Bm)，每一发光控制单元CU至少与三条负极电压线(Rm、Gm、Bm)电连接，不同的发光控制单元CU与不同的负极电压线(Rm、Gm、Bm)电连接，负极电压线(Rm、Gm、Bm)由发光区AA引出至周边区BB的引线区，各负极电压线(Rm、Gm、Bm)的阻值相同；如图5和图9所示，还包括多条负极电压线Bm，每一发光控制单元CU至少与一条负极电压线Bm电连接，不同的发光控制单元CU与不同的负极电压线Bm电连接，负极电压线Bm由发光区AA引出至周边区BB的引线区，各负极电压线Bm的阻值相同。这样各个发光控制单元CU的负极IR drop可消除，可以进一步提高发光基板发光亮度的均一性。
在具体实施时，在本公开实施例提供的上述发光基板中，以图5和图9为例，各负极电压线Bm包括位于发光区AA的第一子电压线(A1_A10、B1_B10…C1_C10、D1_D10、A1’_A10’、B1’_B10’…C1’_C10’、D1’_D10’)以及位于引线区的第二子电压线(A1_A2、B1_B2…C1_C2、D1_D2、A1’_A2’、 B1’_B2’…C1’_C2’、D1’_D2’)，各第一子电压线(A1_A10、B1_B10…C1_C10、D1_D10、A1’_A10’、B1’_B10’…C1’_C10’、D1’_D10’)的电阻值相同，各第二子电压线(A1_A2、B1_B2…C1_C2、D1_D2、A1’_A2’、B1’_B2’…C1’_C2’、D1’_D2’)的电阻值相同。
在具体实施时，在本公开实施例提供的上述发光基板中，如图12A所示，图12A单独示意出各负极电压线Bm，长度较长的第一子电压线(B1_B10、D1_D10、B1’_B10’、D1’_D10’)的宽度大于长度较小的第一子电压线(A1_A10、C1_C10、A1’_A10’、C1’_C10’)的宽度，从而实现各第一子电压线(A1_A10、B1_B10…C1_C10、D1_D10、A1’_A10’、B1’_B10’…C1’_C10’、D1’_D10’)的电阻值相同。
或，如图12B所示，各第一子电压线(A1_A10、B1_B10…C1_C10、D1_D10、A1’_A10’、B1’_B10’…C1’_C10’、D1’_D10’)的长度和宽度均相同，其中，沿列方向Y直线距离最长的第一子电压线(B1_B10、D1_D10、B1’_B10’、D1’_D10’)的形状为直线，沿列方向Y直线距离较短的第一子电压线(A1_A10、C1_C10、A1’_A10’、C1’_C10’)的形状可以为折线。当然，沿列方向Y直线距离较短的第一子电压线(A1_A10、C1_C10、A1’_A10’、C1’_C10’)的形状还可以为曲线。
在具体实施时，在本公开实施例提供的上述发光基板中，如图12C所示，图12C单独示意出各负极电压线Bm，长度较长的第二子电压线(A1_A2、B1_B2、C1_C2、A1’_A2’、B1’_B2’、C1’_C2’)的宽度大于长度较小的第二子电压线(D1_D2、D1’_D2’)的宽度，且A1_A2、B1_B2、C1_C2的宽度依次降低，A1’_A2’、B1’_B2’、C1’_C2’的宽度依次降低，从而实现各第二子电压线(A1_A2、B1_B2…C1_C2、D1_D2、A1’_A2’、B1’_B2’…C1’_C2’、D1’_D2’)的电阻值相同。
或，如图12D所示，各第二子电压线(A1_A2、B1_B2、C1_C2、A1’_A2’、B1’_B2’、C1’_C2’)的长度和宽度均相同，第二子电压线(A1_A2、B1_B2、C1_C2、A1’_A2’、B1’_B2’、C1’_C2’)包括与第一子电压线(A1_A10、B1_B10… C1_C10、D1_D10、A1’_A10’、B1’_B10’…C1’_C10’、D1’_D10’)对应连接的第一竖直部(A1_Am、B1_Bm、C1_Cm、D1_Dm、A1’_Am’、B1’_Bm’、C1’_Cm’、D1’_Dm’)、与第一竖直部(A1_Am、B1_Bm、C1_Cm、D1_Dm、A1’_Am’、B1’_Bm’、C1’_Cm’、D1’_Dm’)连接的倾斜部(An_Am、Bn_Bm、Cn_Cm、Dn_Dm、An’_Am’、Bn’_Bm’、Cn’_Cm’、Dn’_Dm’)以及与倾斜部(An_Am、Bn_Bm、Cn_Cm、Dn_Dm、An’_Am’、Bn’_Bm’、Cn’_Cm’、Dn’_Dm’)连接的第二竖直部(An_A2、Bn_B2、Cn_C2、Dn_D2、An’_A2’、Bn’_B2’、Cn’_C2’、Dn’_D2’)，各第一竖直部(A1_Am、B1_Bm、C1_Cm、D1_Dm、A1’_Am’、B1’_Bm’、C1’_Cm’、D1’_Dm’)的长度和宽度均相同，各第二竖直部(An_A2、Bn_B2、Cn_C2、Dn_D2、An’_A2’、Bn’_B2’、Cn’_C2’、Dn’_D2’)的长度和宽度均相同，长度最长的倾斜部(例如An_Am、Bn_Bm、An’_Am’、Bn’_Bm’)的形状为直线，长度较短的各倾斜部(Cn_Cm、Dn_Dm、Cn’_Cm’、Dn’_Dm’)的形状可以为折线。当然，长度较短的各倾斜部(Cn_Cm、Dn_Dm、Cn’_Cm’、Dn’_Dm’)的形状还可以为曲线。
通过优化负极引线设计，使得各灯区对应的负极引线电阻相等，则各灯区负极IR drop可消除；
需要说明的是，图12C和图12D仅是为了示意各第二子电压线的阻值相同的实施方式，当然，图12C和图12D中第一子电压线可以为图11A、图11B中任意一种。
因此，本公开实施例提供的图12A～图12D解决了发光区AA内LED存在的负极IR drop的问题，当然不限于本公开实施例列举的几种实施方式，例如还可以将长短不一的各负极电压线的长度和宽度设置成相同，其中较长的负极电压线整根设置成直线，较短的负极电压线整根设置成折线或曲线；或者还可以将较长的负极电压线整根设置成较粗，较短的负极电压线整根设置成较细；只要能够使得各负极电压性的阻值相同，均属于本公开实施例保护的范围。
需要说明的是，本公开实施例是以单独设置正极电压线的走线方式来实 现降低正极IR drop，或同时设置正极电压线和负极电压线的走线方式来实现降低正负极IP drop为例；当然，在具体实施时，也可以仅采用本公开实施例提供的上述负极电压线的走线方式来降低负极IP drop，单独设置负极电压线的走线方式参见前述描述，在此不做赘述。
综上所述，本公开实施例通过调整发光基板的正极电压线和负极电压线的宽度或长度，通过以上正极电压线及负极电压线设计，使得LED间正极IR drop有效降低，以及使得LED间负极IR drop有效降低，从而使得发光基板不同区域LED正负极IR drop显著减小，发光基板的发光亮度均一性显著提升。
基于同一发明构思，本公开实施例还提供了一种显示装置，包括本公开实施例提供的上述发光基板。由于该显示装置解决问题的原理与前述一种发光基板相似，因此该显示装置的实施可以参见前述发光基板的实施，重复之处不再赘述。该显示装置可以为：手机、平板电脑、电视机、显示器、笔记本电脑、数码相框、导航仪等任何具有显示或触控功能的产品或部件。
在具体实施时，本公开实施例提供的上述显示装置可以为液晶显示装置。
在具体实施时，本公开实施例提供的上述显示装置还可以包括本领域技术人员熟知的其他功能结构，在此不做详述。
本公开实施例提供了一种发光基板及显示装置，通过将多个发光控制单元划分为至少两个区域，然后各区域通过采用不同的正极电压线给对应区域的发光控制单元加载正极电压，这样每一根正极电压线驱动的子发光单元的数量至少减半，可以有效降低子发光单元之间由于正极电压线引起的正极IR drop，使得各子发光单元的正极电压差异大大降低，从而可以提高发光基板各区域发光亮度的均一性。
尽管已描述了本公开的优选实施例，但本领域内的技术人员一旦得知了基本创造性概念，则可对这些实施例作出另外的变更和修改。所以，所附权利要求意欲解释为包括优选实施例以及落入本公开范围的所有变更和修改。
显然，本领域的技术人员可以对本公开实施例进行各种改动和变型而不 脱离本公开实施例的精神和范围。这样，倘若本公开实施例的这些修改和变型属于本公开权利要求及其等同技术的范围之内，则本公开也意图包含这些改动和变型在内。

Claims (18)

  1. 一种发光基板，其中，所述发光基板具有发光区和围绕所述发光区设置的周边区，所述发光基板包括：
    阵列分布的多个发光控制单元，位于所述发光区；每一所述发光控制单元包括至少一个子发光单元，所述多个发光控制单元划分为至少两个区域；
    至少两条正极电压线，位于所述周边区，且所述至少两条正极电压线分别位于所述多个发光控制单元的相对两侧；其中，位于同一所述区域的各所述发光控制单元的子发光单元与同一条所述正极电压线电连接，位于不同所述区域的所述发光控制单元的子发光单元与不同条所述正极电压线电连接。
  2. 如权利要求1所述的发光基板，其中，所述多个发光控制单元沿行方向划分为两个区域，所述正极电压线的数量为两条，两条所述正极电压线关于所述发光区的中心对称设置。
  3. 如权利要求2所述的发光基板，其中，每一所述区域的所述发光控制单元沿列方向划分为至少两个子区域，位于同一所述子区域的所述发光控制单元的子发光单元与同一条所述正极电压线电连接，位于不同所述子区域的所述发光控制单元的子发光单元与不同条所述正极电压线电连接；
    每一所述区域的所述发光控制单元对应的各所述正极电压线沿列方向延伸且沿所述行方向排列，且各所述正极电压线延伸至所述周边区的引线区；
    各所述正极电压线的电阻值相同。
  4. 如权利要求3所述的发光基板，其中，每一所述区域中，沿各所述正极电压线的长度由大到小的方向上，各所述正极电压线的宽度依次降低。
  5. 如权利要求3所述的发光基板，其中，每一所述区域中，各所述正极电压线的长度和宽度均相同；其中，沿所述列方向直线距离最长的所述正极电压线的形状为直线，沿所述列方向直线距离较短的各所述正极电压线的形状为折线或曲线。
  6. 如权利要求3所述的发光基板，其中，各所述正极电压线包括位于所 述引线区的第一端以及远离所述引线区的第二端；每一所述区域中的最后一行所述发光控制单元的底边为第一水平参考线，各所述正极电压线的位于所述第一水平参考线和所述第一端之间的第一部分的长度和宽度相同；
    每一所述子区域所述发光控制单元中的最后一行所述子发光单元的顶边为第二水平参考线，各所述正极电压线的位于各自所述第二水平参考线和各自所述第二端之间的第二部分的长度和宽度相同；
    各所述正极电压线的除所述第一部分和所述第二部分的第三部分，沿各所述第三部分的长度由大到小的方向上，各所述第三部分的宽度依次降低；或，各所述第三部分的长度和宽度均相同，沿所述列方向直线距离最长的所述第三部分的形状为直线，沿所述列方向直线距离较短的各所述第三部分的形状为折线或曲线。
  7. 如权利要求2-6任一项所述的发光基板，其中，还包括沿所述行方向延伸的多条连接线，各所述正极电压线通过对应的所述连接线与所述子发光单元电连接，各所述连接线的电阻值相同。
  8. 如权利要求7所述的发光基板，其中，针对每一所述区域的所述发光控制单元沿列方向划分为至少两个子区域，各所述子区域的所述发光控制单元电连接的所述连接线包括位于所述发光区的第一子连接线以及位于所述周边区的第二子连接线；
    沿所述列方向上，不同所述子区域的所述发光控制单元对应的各所述第二子连接线的长度依次降低，且宽度依次降低；
    或，不同所述子区域的所述发光控制单元对应的各所述第二子连接线的长度和宽度均相同，沿所述行方向直线距离最长的所述第二子连接线的形状为直线，沿所述行方向直线距离较短的各所述第二子连接线的形状为折线或曲线。
  9. 如权利要求1-8任一项所述的发光基板，其中，还包括多条负极电压线，每一所述发光控制单元至少与一条所述负极电压线电连接，不同的所述发光控制单元与不同的所述负极电压线电连接，所述负极电压线由所述发光 区引出至所述周边区的引线区，各所述负极电压线的阻值相同。
  10. 如权利要求9所述的发光基板，其中，各所述负极电压线包括位于所述发光区的第一子电压线以及位于所述引线区的第二子电压线，各所述第一子电压线的电阻值相同，各所述第二子电压线的电阻值相同。
  11. 如权利要求10所述的发光基板，其中，长度较长的所述第一子电压线的宽度大于长度较小的所述第一子电压线的宽度；
    或，各所述第一子电压线的长度和宽度均相同，其中，沿所述列方向直线距离最长的所述第一子电压线的形状为直线，沿所述列方向直线距离较短的所述第一子电压线的形状为折线或曲线。
  12. 如权利要求10所述的发光基板，其中，长度较长的所述第二子电压线的宽度大于长度较小的所述第二子电压线的宽度；
    或，各所述第二子电压线的长度和宽度均相同，所述第二子电压线包括与所述第一子电压线连接的第一竖直部、与所述第一竖直部连接的倾斜部以及与所述倾斜部连接的第二竖直部，各所述第一竖直部的长度和宽度均相同，各所述第二竖直部的长度和宽度均相同，长度最长的所述倾斜部的形状为直线，长度较短的各所述倾斜部的形状为折线或曲线。
  13. 如权利要求1-12任一项所述的发光基板，其中，每一所述发光控制单元包括呈阵列分布的多个不同发光颜色的所述子发光单元，位于同一列的所述子发光单元的发光颜色相同，不同发光颜色列的所述子发光单元沿所述行方向交替排列，每一种发光颜色的所述子发光单元均包括m行n列个；
    每一所述发光控制单元内，与所述正极电压线电连接的沿所述行方向延伸的连接线的数量为p根，1≤p≤m，p为正整数，且m/p为整数；
    同一列m个相同发光颜色的所述子发光单元中，m/p个所述子发光单元串联；
    每一所述发光控制单元内包括的负极电压线的数量至少与发光颜色的数量相同。
  14. 如权利要求13所述的发光基板，其中，所述子发光单元包括红色子 发光单元、绿色子发光单元和蓝色子发光单元。
  15. 如权利要求1-12任一项所述的发光基板，其中，每一所述发光控制单元包括呈阵列分布的m行n列个相同发光颜色的所述子发光单元，每一所述发光控制单元内，与所述正极电压线电连接的沿所述行方向延伸的连接线的数量为p根，1≤p≤m，p为正整数，且m/p为整数；
    同一列m个所述子发光单元中，m/p个所述子发光单元串联。
  16. 如权利要求15所述的发光基板，其中，所述子发光单元为蓝色子发光单元。
  17. 如权利要求1-16任一项所述的发光基板，其中，所述子发光单元为Mini LED或Micro LED。
  18. 一种显示装置，其中，包括：如权利要求1-17任一项所述的发光基板。
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