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WO2021218665A1 - 发光器件、显示基板及显示装置 - Google Patents

发光器件、显示基板及显示装置 Download PDF

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Publication number
WO2021218665A1
WO2021218665A1 PCT/CN2021/087757 CN2021087757W WO2021218665A1 WO 2021218665 A1 WO2021218665 A1 WO 2021218665A1 CN 2021087757 W CN2021087757 W CN 2021087757W WO 2021218665 A1 WO2021218665 A1 WO 2021218665A1
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WIPO (PCT)
Prior art keywords
light
emitting device
emitting
color
emitting unit
Prior art date
Application number
PCT/CN2021/087757
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English (en)
French (fr)
Inventor
廖金龙
Original Assignee
京东方科技集团股份有限公司
合肥京东方卓印科技有限公司
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Filing date
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Application filed by 京东方科技集团股份有限公司, 合肥京东方卓印科技有限公司 filed Critical 京东方科技集团股份有限公司
Priority to US17/642,810 priority Critical patent/US20220384757A1/en
Publication of WO2021218665A1 publication Critical patent/WO2021218665A1/zh

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    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/30—Devices specially adapted for multicolour light emission
    • H10K59/32—Stacked devices having two or more layers, each emitting at different wavelengths
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K50/00—Organic light-emitting devices
    • H10K50/80—Constructional details
    • H10K50/805—Electrodes
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K50/00—Organic light-emitting devices
    • H10K50/10—OLEDs or polymer light-emitting diodes [PLED]
    • H10K50/11—OLEDs or polymer light-emitting diodes [PLED] characterised by the electroluminescent [EL] layers
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K50/00—Organic light-emitting devices
    • H10K50/10—OLEDs or polymer light-emitting diodes [PLED]
    • H10K50/11—OLEDs or polymer light-emitting diodes [PLED] characterised by the electroluminescent [EL] layers
    • H10K50/125—OLEDs or polymer light-emitting diodes [PLED] characterised by the electroluminescent [EL] layers specially adapted for multicolour light emission, e.g. for emitting white light
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/10—OLED displays
    • H10K59/12—Active-matrix OLED [AMOLED] displays
    • H10K59/121—Active-matrix OLED [AMOLED] displays characterised by the geometry or disposition of pixel elements
    • H10K59/1213—Active-matrix OLED [AMOLED] displays characterised by the geometry or disposition of pixel elements the pixel elements being TFTs
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/30—Devices specially adapted for multicolour light emission
    • H10K59/35—Devices specially adapted for multicolour light emission comprising red-green-blue [RGB] subpixels
    • H10K59/351—Devices specially adapted for multicolour light emission comprising red-green-blue [RGB] subpixels comprising more than three subpixels, e.g. red-green-blue-white [RGBW]
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/40—OLEDs integrated with touch screens
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
    • G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
    • G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
    • G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
    • G09G3/3225—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K2101/00—Properties of the organic materials covered by group H10K85/00
    • H10K2101/10—Triplet emission

Definitions

  • the present disclosure belongs to the field of display technology, and specifically relates to a light emitting device, a display substrate and a display device.
  • OLED Organic Light-Emitting Diode
  • the current OLED display substrate generally includes a plurality of periodically arranged red light-emitting devices R, green light-emitting devices G, and blue light-emitting devices B.
  • the light-emitting drive module provides driving signals for each light-emitting device to light up each light-emitting device. Realize the colorful display of the entire screen.
  • the present disclosure provides a light emitting device, a display substrate and a display device.
  • the light emitting device includes: a first electrode and a second electrode disposed opposite to each other; a plurality of light emitting units stacked between the first electrode and the second electrode; and a light emitting unit located adjacent to each other Between the third electrode.
  • the first electrode and the second electrode are electrically connected to a first signal terminal, the third electrode is connected to a second signal terminal, the first signal terminal is configured to provide a first signal and the second signal
  • the signal terminal is configured to provide a second signal so that only part of the light-emitting units of the plurality of light-emitting units emit light at the same time.
  • the colors of light emitted by the plurality of light emitting units are the same.
  • part of the light emitted by the light-emitting unit is monochromatic light, and some of the light emitted by the light-emitting unit is polychromatic light, and the polychromatic light includes the monochromatic light.
  • the polychromatic light is white light.
  • the display substrate according to the present disclosure includes a plurality of light-emitting devices, and at least some of the light-emitting devices among the plurality of light-emitting devices are the light-emitting devices described above.
  • the at least part of the light emitting device includes a first light emitting device, a second light emitting device, and a third light emitting device
  • the first light emitting device includes a first monochromatic light emitting unit
  • the first monochromatic light emitting device The light emitting unit is configured to emit monochromatic light of a first color
  • the second light emitting device includes a second monochromatic light emitting unit
  • the second monochromatic light emitting unit is configured to emit monochromatic light of a second color.
  • the color is different from the first color
  • the third light emitting device includes a third monochromatic light emitting unit configured to emit monochromatic light of a third color
  • the third color is different from the third color.
  • the first light-emitting device further includes a first multi-color light-emitting unit configured to emit a first multi-color light, and the first multi-color light includes the first multi-color light.
  • Color monochromatic light the second light-emitting device further includes a second multi-color light-emitting unit configured to emit a second multi-color light, the second multi-color light including the second color Monochromatic light
  • the third light-emitting device further includes a third multi-color light-emitting unit configured to emit a third multi-color light, the third multi-color light including the third color of the monochromatic Light.
  • the first multi-color light, the second multi-color light, and the third multi-color light are all white light.
  • the first light emitting device includes a plurality of the first monochromatic light emitting units
  • the second light emitting device includes a plurality of the second monochromatic light emitting units
  • the third light emitting device It includes a plurality of the third monochromatic light-emitting units.
  • the at least part of the light-emitting device further includes a compensation light-emitting device, the compensation light-emitting device includes a fourth multi-color light-emitting unit, and the fourth multi-color light-emitting unit is configured to emit fourth multi-color light.
  • the compensation light emitting device further includes at least one of the first monochromatic light emitting unit, the second monochromatic light emitting unit, and the third monochromatic light emitting unit.
  • the first monochromatic light emitting unit is configured to emit red light
  • the second monochromatic light emitting unit is configured to emit green light
  • the third monochromatic light emitting unit is configured to emit blue light
  • the second monochromatic light emitting unit is configured to emit blue light.
  • the four-color light emitting unit is configured to emit white light.
  • the compensation light emitting device includes the second monochromatic light emitting unit.
  • the compensation light emitting device includes the third monochromatic light emitting unit.
  • the display substrate further includes: a color filter layer; the color filter layer is located on the light-emitting side of the plurality of light-emitting devices.
  • the display substrate further includes: a light-emitting drive circuit.
  • the light-emitting drive circuit is connected to the first signal terminal and the second signal terminal, and is configured to control the first signal terminal to output the first signal and control the second signal terminal to output the second signal. Signal.
  • the display device according to the present disclosure includes the display substrate as described above.
  • FIG. 1 is a schematic diagram of the structure of a light emitting device in the related art
  • FIG. 2 is a schematic structural diagram of a pixel driving circuit in the related art
  • Fig. 3 is a schematic structural diagram of a light emitting device according to an embodiment of the present disclosure.
  • FIG. 4 is a schematic diagram of a structure of a display substrate according to an embodiment of the present disclosure.
  • FIG. 5 is a schematic structural diagram of another display substrate according to an embodiment of the present disclosure.
  • FIG. 6 is a schematic structural diagram of yet another display substrate according to an embodiment of the present disclosure.
  • FIG. 7 is a schematic structural diagram of still another display substrate according to an embodiment of the present disclosure.
  • FIG. 1 is a schematic diagram of the structure of a light emitting device in the related art.
  • the light emitting device includes: a first electrode 101 and a second electrode 102 arranged opposite to each other, and a light emitting layer 103 sandwiched between the first electrode 101 and the second electrode 102.
  • the first electrode 101 may be the anode of the light emitting device
  • the second electrode 102 may be the cathode of the light emitting device
  • the first electrode 101 may be connected to the first signal terminal N1
  • the second electrode 102 may be connected to the second signal terminal N2.
  • FIG. 2 is a schematic structural diagram of a pixel driving circuit in the related art.
  • the gate of the switching transistor T1 is connected to the scan signal terminal Scan
  • the source of the switching transistor T1 is connected to the data signal terminal Data
  • the drain of the switching transistor T1 is connected to the gate of the driving transistor T2
  • the source of the driving transistor T2 Connected to the first power terminal VDD
  • the drain of the driving transistor T2 is connected to the first signal terminal N1
  • the anode of the light emitting device D is connected to the first signal terminal N1
  • the cathode of the light emitting device D is connected to the second signal terminal N2
  • the second signal terminal N2 is connected to the The common electrode or ground terminal GND is connected.
  • the data signal provided by the data signal terminal Data can be input to the gate of the driving transistor T2 through the switching transistor T1 to control the driving transistor T2 to turn on, thereby reducing the first power supply voltage of the first power supply terminal VDD.
  • the driving transistor T2 is input to the anode of the light-emitting device D, and the voltage of the first power supply terminal VDD is input to the light-emitting device D by controlling the voltage of the data signal, thereby controlling the brightness of the light-emitting device D.
  • the light-emitting material of each light-emitting device of the OLED display substrate will decline over time, which easily affects the service life of the OLED display substrate. Also, the decay speeds of the light-emitting materials of the red light-emitting device R, the green light-emitting device G, and the blue light-emitting device B are different. In the case that the luminescent materials of the various light-emitting devices are inconsistent in decay, it is easy to cause defects such as uneven display of the OLED display substrate.
  • the present disclosure provides a light emitting device, a display substrate including the light emitting device, and a display device including the display substrate.
  • Fig. 3 is a schematic structural diagram of a light emitting device according to an embodiment of the present disclosure.
  • the light-emitting device includes: a first electrode 101 and a second electrode 102 arranged oppositely, a plurality of light-emitting units 104 stacked between the first electrode 101 and the second electrode 102, and a light-emitting unit located adjacent to each other.
  • the third electrode 105 between the cells 104.
  • the first electrode 101 and the second electrode 102 are electrically connected, and the first electrode 101 and the second electrode 102 are both connected to the first signal terminal N1, the third electrode 105 is connected to the second signal terminal N2, and the first signal terminal N1 is configured as The first signal is provided and the second signal terminal N2 is configured to provide the second signal, so that only part of the light-emitting units 104 of the plurality of light-emitting units emit light at the same time.
  • the light emitting device includes two light emitting units 104 as an example for description, where the light emitting unit 104 on the side close to the anode may be the first light emitting unit 201, and the side close to the cathode
  • the light emitting unit 104 is the second light emitting unit 202.
  • the first electrode 101 of the light-emitting device may be an anode
  • the second electrode 102 may be a cathode.
  • the signals provided by the first signal terminal N1 and the second signal terminal N2 may be the same as those provided by the first signal terminal N1 and the related art.
  • the signals provided by the second signal terminal N2 are the same.
  • the pixel driving circuit of the light emitting device in the embodiment of the present disclosure may be the same as the pixel driving circuit in the related art.
  • the anode and cathode in the light emitting device in the embodiment of the present disclosure are both connected to the first signal terminal N1, and the third electrode 105 is connected to the second signal terminal N2.
  • the third electrode 105 is equivalent to a cathode;
  • the second light-emitting unit 202 the third electrode 105 is equivalent to an anode.
  • the potential E1 of the anode is equal to the potential E3 of the cathode.
  • the first light-emitting unit 201 can be controlled to emit light by controlling the voltage between the anode and the third electrode 105
  • the second light-emitting unit 202 can be controlled to emit light by controlling the voltage between the cathode and the third electrode 105
  • the light-emitting brightness of the first light-emitting unit 201 and the second light-emitting unit 202 can be controlled by the voltage difference between adjacent electrodes. In this way, the first light-emitting unit 201 and the second light-emitting unit 202 can emit light independently.
  • the service life of the light-emitting device in the embodiments of the present disclosure can be significantly increased, thereby avoiding the problem of poor display caused by the deterioration of the light-emitting material, thereby improving display effect.
  • the third electrode 105 may be a charge generation layer, and its material may be a metal.
  • the thickness of the third electrode 105 can be made thinner to improve the light transmittance of the third electrode 105.
  • the material of the third electrode 103 may also be a mixed material of metal and charge transport material or other materials.
  • the metal in the third electrode 105 may be an alkali metal, such as lithium.
  • the colors of light emitted by the plurality of light-emitting units 104 are the same.
  • the colors of the light emitted by the first light-emitting unit 201 and the second light-emitting unit 202 that are arranged in a stack may be the same.
  • the first light-emitting unit 201 or the second light-emitting unit 202 can be controlled to emit light at the same time, or the two can be controlled to emit light alternately, so that the service life of the entire light-emitting device can be improved.
  • part of the light emitted by the light-emitting unit 104 is monochromatic light, and some of the light emitted by the light-emitting unit 104 is polychromatic light.
  • the polychromatic light may be white light.
  • the color of light emitted by the first light-emitting unit 201 may be different from the color of light emitted by the second light-emitting unit 202.
  • the color of light emitted by the first light-emitting unit 201 may be red
  • the color of light emitted by the second light-emitting unit 202 may be white.
  • a red filter provided on the light-emitting side of the light-emitting device can filter out other colors of light from the white light emitted by the second light-emitting unit 202 to form red light.
  • the first light-emitting unit 201 or the second light-emitting unit 202 can be controlled to emit light at the same time, or the two can be controlled to emit light alternately, so that the service life of the overall light-emitting device can be improved.
  • embodiments of the present disclosure provide a display substrate, which includes a plurality of light-emitting devices in the foregoing embodiments of the present disclosure.
  • 4 is a schematic structural diagram of a display substrate provided by an embodiment of the disclosure.
  • the display substrate includes a red light emitting device 401, a green light emitting device 402, and a blue light emitting device 403.
  • the red light-emitting device 401 includes a plurality of red light-emitting units R
  • the green light-emitting device includes a plurality of green light-emitting units G
  • the blue light-emitting device includes a plurality of blue light-emitting units B.
  • the light-emitting devices in the display substrate may include light-emitting units of the same color.
  • the red light-emitting device 401 may include two stacked red light-emitting units R, and the two red light-emitting units R may not emit light at the same time.
  • the service life of the red light-emitting device can be increased.
  • the working principle of the green light-emitting device 402 and the blue light-emitting device 403 is similar to the working principle of the red light-emitting device 401 described above, and will not be described in detail here.
  • the display substrate also includes signal lines such as scan lines, data lines, and power lines in the related art, as well as other devices such as transistors, capacitors, and resistors.
  • the driving methods in the related art can be used to drive the light in the display substrate.
  • the device emits light to realize the screen display, which will not be described in detail here.
  • FIG. 5 is a schematic structural diagram of another display substrate according to an embodiment of the present disclosure.
  • the display substrate includes a red light emitting device 401, a green light emitting device 402, and a blue light emitting device 403.
  • the red light emitting device 401 includes a red light emitting unit R and a white light emitting unit W
  • the green light emitting device 402 includes a green light emitting unit G and a white light emitting unit W
  • the blue light emitting device 403 includes a blue light emitting unit B and a white light emitting unit W.
  • the light-emitting devices in the display substrate may include light-emitting units of different colors.
  • the red light-emitting device 401 may include a red light-emitting unit R and a white light-emitting unit W.
  • the red light-emitting unit R is controlled to emit light
  • the white light-emitting unit W is controlled to emit light
  • the white light-emitting unit W can emit white light. After passing through the red filter, the white light can become red light. Therefore, red light can be obtained, and the service life of the red light-emitting device is improved. It is understandable that in FIG.
  • the white light-emitting unit W is located above the red light-emitting unit R.
  • the positions of the red light-emitting unit R and the white light-emitting unit W can be exchanged.
  • the white light-emitting unit W can be located on the red light-emitting unit.
  • the working principle of the green light-emitting device 402 and the blue light-emitting device 403 is similar to the working principle of the red light-emitting device 401 described above, and will not be described in detail here.
  • the display substrate further includes a compensation light-emitting device, and the compensation light-emitting device includes a white compensation light-emitting device 404.
  • the white compensation light emitting device 404 includes one white light emitting unit W or a plurality of white light emitting units W stacked in layers.
  • the green filter can filter the white light emitted by the white compensation light emitting device 404 into green light to compensate the brightness of the green light emitting device 402, thereby The brightness of the light emitted by the light-emitting devices of each color in the display substrate is made uniform, thereby making the display screen uniform, and avoiding defects such as uneven display.
  • the white compensation light-emitting device 404 may use one white light-emitting unit W to emit light, or may use multiple white light-emitting units W to emit light, so as to increase the service life of the white light-emitting device 404.
  • the working principle of the brightness compensation of the blue light-emitting device 403 is similar to the working principle of the green light-emitting device 402 described above, and will not be described in detail here.
  • the total power consumption of the light emitting device can reach 480 watts.
  • the white compensation light emitting device 404 in the embodiment of the present disclosure can improve the brightness of other light emitting devices during operation. In practical applications, the white compensation light emitting device 404 is used in common with the red light emitting device 401, the green light emitting device 402, and the blue light emitting device 403. When a white screen is presented, the total power consumption of the light-emitting device can be reduced to 360 watts. Therefore, the white-compensated light-emitting device 404 in the embodiment of the present disclosure also has the effect of reducing power consumption.
  • FIG. 6 is a schematic structural diagram of yet another display substrate according to an embodiment of the present disclosure.
  • the compensation light emitting device includes a green compensation light emitting device 405, and the green compensation light emitting device 405 includes a white light emitting unit W and a green light emitting unit G.
  • the green-compensated light-emitting device 405 works, and the white light-emitting unit W in the green-compensated light-emitting device 405 can emit white light, using a green filter The white light can be filtered into green light to compensate the brightness of the green light-emitting device 402.
  • the green light emitting unit G in the green compensation light emitting device 405 emits green light to compensate the brightness of the green light emitting device 402. In this way, the brightness of the light emitted by the light-emitting devices of each color in the display substrate is made uniform, thereby making the display screen uniform, and avoiding defects such as uneven display.
  • FIG. 7 is a schematic structural diagram of still another display substrate according to an embodiment of the present disclosure.
  • the compensation light emitting device includes a blue compensation light emitting device 406, and the blue compensation light emitting device 406 includes a white light emitting unit W and a blue light emitting unit B.
  • the blue-compensated light-emitting device 406 works, and the white light-emitting unit W in the blue-compensated light-emitting device 406 can emit white light.
  • the blue filter can filter white light into blue light to compensate the brightness of the blue light-emitting device 403.
  • the blue light emitting unit B in the blue compensation light emitting device 406 emits blue light to compensate the brightness of the blue light emitting device 403. In this way, the brightness of the light emitted by the light-emitting devices of each color in the display substrate is made uniform, thereby making the display screen uniform, and avoiding defects such as uneven display.
  • the aforementioned red light-emitting unit R includes a hole transport layer, a red light-emitting layer, an electron transport layer, and an electron injection layer.
  • a voltage signal can be applied between the cathode and the anode, so that a hole-electron pair is formed in the red light-emitting layer to excite the light-emitting material to emit light, thereby generating red light.
  • the structures of the green light-emitting unit G and the blue light-emitting unit B are basically the same as the structure of the red light-emitting unit R described above, except that the light-emitting layer in the green light-emitting unit G is a green light-emitting layer, and the light-emitting layer in the blue light-emitting unit B The layer is a blue light-emitting layer, and the characteristics of the light-emitting materials in the light-emitting layers of different colors are different, thereby generating light of different colors.
  • the structure of the white light-emitting unit W is basically the same as the structure of the red light-emitting unit R.
  • the light-emitting layer in the white light-emitting unit W includes a red light-emitting layer R, a green light-emitting layer G, and a blue light-emitting layer B.
  • the three light-emitting layers of different colors all emit light at the same time, and the formed light of three different colors is mixed to form a white light.
  • the light-emitting layer in each light-emitting device can be formed by evaporation or printing.
  • the light-emitting layers in different light-emitting units may be formed by the same process, or may be formed by different processes.
  • the white light-emitting layer in the blue compensation light-emitting device 406 may be formed by an evaporation process, and the blue light-emitting layer may be formed by a printing process; or, both the white light-emitting layer and the blue light-emitting layer may be formed by an evaporation process.
  • other film layers in each light-emitting device can be formed by using processes in the prior art, and will not be described in detail here.
  • the display substrate further includes: a color filter layer 5; the color filter layer 5 is located on the light emitting side of the light emitting device.
  • the color film layer may be located on the light-emitting side of each light-emitting device.
  • the white light-emitting unit in the light-emitting device emits white light
  • the white light can be filtered into monochromatic light of the required color, thereby increasing the service life of the light-emitting device, and compensating the brightness of the light-emitting device, so that each The brightness of the light emitted by the color light-emitting device is uniform.
  • the display substrate further includes: a light-emitting drive circuit 3; the light-emitting drive circuit 3 is connected to the first signal terminal N1 and the second signal terminal N2, and is configured to control the output of the first signal terminal N1 and the second signal terminal N2. The corresponding signal.
  • the light-emitting drive circuit can provide voltage signals for the first signal terminal N1 and the second signal terminal N2, so that the voltage of the first signal terminal N1 and the voltage of the second signal terminal N2 are different, so as to drive different light-emitting units. Light emitting, so that only part of the light emitting unit emits light at the same time, so as to increase the service life of the light emitting device.
  • embodiments of the present disclosure provide a display device, which includes the display substrate in the above-mentioned embodiments of the present disclosure.
  • the display device according to the present disclosure may include terminal devices such as a mobile phone, a tablet computer, and a smart TV, and its implementation principle is similar to that of the display substrate in the foregoing embodiment, and will not be repeated here.

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  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Geometry (AREA)
  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Electroluminescent Light Sources (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)

Abstract

一种发光器件、显示基板及显示装置。发光器件包括：相对设置的第一电极（101）和第二电极（102）；在所述第一电极（101）和所述第二电极（102）之间叠层设置的多个发光单元（104）；以及位于相邻所述发光单元（104）之间的第三电极（105）。所述第一电极（101）和所述第二电极（102）电连接均连接至第一信号端（N1），所述第三电极（105）连接至第二信号端（N2），所述第一信号端（N1）配置为提供第一信号并且所述第二信号端（N2）配置为提供第二信号，使得在同一时间所述多个发光单元（104）中的仅部分发光单元（104）发光。

Description

发光器件、显示基板及显示装置
相关申请的交叉引用
本申请要求于2020年4月29日提交至中国知识产权局的中国专利申请No.202010358100.7的优先权，所述申请的内容通过引用其全部合并于此。
技术领域
本公开属于显示技术领域，具体涉及一种发光器件、显示基板及显示装置。
背景技术
有机发光二极管(Organic Light-Emitting Diode，OLED)显示以其高亮度、高信赖性等优势，在显示领域中得到了广泛地应用。目前的OLED显示基板一般包括多个周期性排布的红色发光器件R、绿色发光器件G和蓝色发光器件B，通过发光驱动模块为各个发光器件提供驱动信号，以点亮各个发光器件，从而实现整个画面的多彩显示。
发明内容
本公开提供一种发光器件、显示基板及显示装置。
根据本公开的发光器件包括：相对设置的第一电极和第二电极；在所述第一电极和所述第二电极之间叠层设置的多个发光单元；以及位于相邻所述发光单元之间的第三电极。所述第一电极和所述第二电极电连接均连接至第一信号端，所述第三电极连接至第二信号端，所述第一信号端配置为提供第一信号并且所述第二信号端配置为提供第二信号，使得在同一时间所述多个发光单元中的仅部分发光单元发光。
在本公开的实施例中，所述多个发光单元发出的光颜色相同。
在本公开的实施例中，部分所述发光单元发出的光为单色光，部分所述发光单元发出的光为复色光，所述复色光包括所述单色光。
在本公开的实施例中，所述复色光是白光。
根据本公开的显示基板包括多个发光器件，所述多个发光器件中的至少部分发光器件为如上所述的发光器件。
在本公开的实施例中，所述至少部分发光器件包括第一发光器件、第二发光器件和第三发光器件，所述第一发光器件包括第一单色发光单元，所述第一单色发光单元配置为发射第一颜色的单色光，所述第二发光器件包括第二单色发光单元，所述第二单色发光单元配置为发射第二颜色的单色光，所述第二颜色不同于所述第一颜色，所述第三发光器件包括第三单色发光单元，所述第三单色发光单元配置为发射第三颜色的单色光，所述第三颜色不同于所述第一颜色和所述第二颜色。
在本公开的实施例中，所述第一发光器件还包括第一复色发光单元，所述第一复色发光单元配置为发射第一复色光，所述第一复色光包括所述第一颜色的单色光；所述第二发光器件还包括第二复色发光单元，所述第二复色发光单元配置为发射第二复色光，所述第二复色光包括所述第二颜色的单色光；所述第三发光器件还包括第三复色发光单元，所述第三复色发光单元配置为发射第三复色光，所述第三复色光包括所述第三颜色的单色光。
在本公开的实施例中，所述第一复色光、所述第二复色光和所述第三复色光均为白光。
在本公开的实施例中，所述第一发光器件包括多个所述第一单色发光单元，所述第二发光器件包括多个所述第二单色发光单元，所述第三发光器件包括多个所述第三单色发光单元。
在本公开的实施例中，所述至少部分发光器件还包括：补偿发光器件，所述补偿发光器件包括第四复色发光单元，所述第四复色发光单元配置为发射第四复色光。
在本公开的实施例中，所述补偿发光器件还包括所述第一单色发光单元、 所述第二单色发光单元和所述第三单色发光单元中的至少一者。
在本公开的实施例中，所述第一单色发光单元配置为发射红光，所述第二单色发光单元配置为发射绿光，所述第三单色发光单元配置为发射蓝光，第四复色发光单元配置为发射白光。
在本公开的实施例中，所述补偿发光器件包括所述第二单色发光单元。
在本公开的实施例中，所述补偿发光器件包括所述第三单色发光单元。
在本公开的实施例中，所述显示基板还包括：彩膜层；所述彩膜层位于所述多个发光器件的出光侧。
在本公开的实施例中，所述显示基板还包括：发光驱动电路。所述发光驱动电路与所述第一信号端和所述第二信号端连接，并且配置为控制所述第一信号端输出所述第一信号并且控制所述第二信号端输出所述第二信号。
根据本公开的显示装置包括如上所述的显示基板。
附图说明
图1为相关技术中一种发光器件的结构示意图；
图2为相关技术中一种像素驱动电路的结构示意图；
图3为根据本公开实施例的一种发光器件的结构示意图；
图4为根据本公开实施例的一种显示基板的结构示意图；
图5为根据本公开实施例的另一种显示基板的结构示意图；
图6为根据本公开实施例的又一种显示基板的结构示意图；
图7为根据本公开实施例的再一种显示基板的结构示意图。
具体实施方式
为使本领域技术人员更好地理解本公开的技术方案，下面结合附图和具体实施方式对本公开作进一步详细描述。
图1为相关技术中一种发光器件的结构示意图。如图1所示，该发光器件 包括：相对设置的第一电极101和第二电极102、及夹在第一电极101和第二电极102之间的发光层103。第一电极101可以为发光器件的阳极，第二电极102可以为发光器件的阴极，第一电极101可以连接第一信号端N1，第二电极102可以连接第二信号端N2。
图2为相关技术中一种像素驱动电路的结构示意图。如图2所示，开关晶体管T1的栅极连接扫描信号端Scan，开关晶体管T1的源极连接数据信号端Data，开关晶体管T1的漏极连接驱动晶体管T2的栅极，驱动晶体管T2的源极连接第一电源端VDD，驱动晶体管T2的漏极连接第一信号端N1，发光器件D的阳极连接第一信号端N1，发光器件D的阴极连接第二信号端N2，第二信号端N2与公共电极或接地端GND连接。在像素驱动电路工作过程中，数据信号端Data提供的数据信号可以通过开关晶体管T1输入至驱动晶体管T2的栅极，以控制驱动晶体管T2导通，从而将第一电源端VDD的第一电源电压通过驱动晶体管T2输入至发光器件D的阳极，通过控制数据信号的电压的大小，来控制第一电源端VDD输入至发光器件D的电压的大小，从而控制发光器件D的亮度。
然而，OLED显示基板的各个发光器件的发光材料会随着时间的增长而衰退，这样容易影响OLED显示基板的使用寿命。并且，红色发光器件R、绿色发光器件G和蓝色发光器件B的发光材料的衰退速度不同。在各个发光器件的发光材料衰退不一致的情况下，容易造成OLED显示基板显示不均匀等不良。
鉴于上述技术问题，本公开提供了一种发光器件、包括该发光器件的显示基板和包括该显示基板的显示装置。
图3为根据本公开实施例的一种发光器件的结构示意图。如图3所示，发光器件包括：相对设置的第一电极101和第二电极102、在第一电极101和第二电极102之间叠层设置的多个发光单元104、及位于相邻发光单元104之间的第三电极105。第一电极101和第二电极102电连接，且第一电极101和第二电极102均连接至第一信号端N1，第三电极105连接至第二信号端N2，第一信号端N1配置为提供第一信号并且第二信号端N2配置为提供第二信号，使得在同一时间所述多个发光单元中仅部分发光单元104发光。
需要说明的是，为了便于描述，在本公开实施例中以发光器件包括两个发光单元104为例进行说明，其中靠近阳极一侧的发光单元104可以为第一发光单元201，靠近阴极一侧的发光单元104为第二发光单元202。本公开实施例中发光器件的第一电极101可以为阳极，第二电极102可以为阴极，第一信号端N1和第二信号端N2提供的信号可以与相关技术中的第一信号端N1和第二信号端N2提供的信号相同。本公开实施例中的发光器件的像素驱动电路可以与相关技术中的像素驱动电路相同。与相关技术不同的是，本公开实施例中的发光器件中的阳极和阴极均连接第一信号端N1，第三电极105连接第二信号端N2。对于第一发光单元201，第三电极105相当于阴极；对于第二发光单元202，第三电极105相当于阳极。向第一信号端N1和第二信号端N2输入信号，阳极的电位E1等于阴极的电位E3，当第三电极105的电位E2＜E1＝E3时，第一发光单元201为正向偏压，则第一发光单元201发光，第二发光单元202为反向偏压，则第二发光单元202不发光。同理，当第三电极105的电位E2＞E1＝E3时，第一发光单元201为反向偏压，则第一发光单元201不发光，第二发光单元202为正向偏压，则第二发光单元202发光。由此可见，可以通过控制阳极与第三电极105之间的电压，来控制第一发光单元201发光，可以通过控制阴极与第三电极105之间的电压，来控制第二发光单元202发光。并且，可以通过相邻的电极之间的电压差，来控制第一发光单元201和第二发光单元202的发光亮度。这样，第一发光单元201和第二发光单元202可以独立发光。在同一时间，仅第一发光单元201发光或仅第二发光单元202发光；或者，第一发光单元201与第二发光单元202可以交替发光。因此，相比于相关技术中仅设置有一层发光层的发光器件，本公开实施例中的发光器件的使用寿命可以明显提升，从而可以避免由于发光材料衰退而造成的显示不良的问题，从而提升显示效果。
在一些实施例中，第三电极105可以为电荷产生层，其材料可以为金属。为了保证第三电极105下的第一发光单元201的光线透过率，可以将第三电极105的厚度制备的较薄，以提高第三电极105的透光性。在一些实施例中，第三电极103的材料也可以为金属与电荷传输材料的混合材料或者其他材料。作为 示例，第三电极105中的金属可以为碱金属，例如锂。
在一些实施例中，所述多个发光单元104发出的光颜色相同。
需要说明的是，叠层设置的第一发光单元201与第二发光单元202发出的光颜色可以相同。在实际应用过程中，可以在同一时间控制第一发光单元201发光或者第二发光单元202发光，或者控制二者交替发光，从而可以提高整体发光器件的使用寿命。
在一些实施例中，部分发光单元104发出的光为单色光，部分发光单元104发出的光为复色光。例如，复色光可以为白光。
需要说明的是，第一发光单元201发出的光颜色可以与第二发光单元202发出的光颜色不同。例如，第一发光单元201发出的光颜色可以为红色，第二发光单元202发出的光颜色可以为白色。在该情况下，在需要红色光线时，可以通过设置在发光器件的发光侧的红色滤光片，将第二发光单元202发出的白色光线中的其他颜色的光线滤除，以形成红色光线，从而可以在同一时间控制第一发光单元201发光或者第二发光单元202发光，或者控制二者交替发光，从而可以提高整体发光器件的使用寿命。
基于同一发明构思，本公开实施例提供了一种显示基板，该显示基板包括多个本公开上述实施例中的发光器件。图4为本公开实施例提供的一种显示基板的结构示意图，如图4所示，该显示基板包括红色发光器件401、绿色发光器件402和蓝色发光器件403。在本公开的实施例中，红色发光器件401包括：多个红色发光单元R；绿色发光器件包括：多个绿色发光单元G；蓝色发光器件包括：多个蓝色发光单元B。
需要说明的是，显示基板中的发光器件中可以包括相同颜色的发光单元，例如红色发光器件401可以包括两个叠层设置的红色发光单元R，两个红色发光单元R可以不同时发光，从而可以提高红色发光器件的使用寿命。绿色发光器件402和蓝色发光器件403的工作原理与上述的红色发光器件401的工作原理类似，在此不再详述。可以理解的是，显示基板中还包括相关技术中的扫描线、数据线、电源线等信号线，以及晶体管、电容、电阻等其他器件，可以利用相 关技术中的驱动方法驱动显示基板中的发光器件发光，以实现画面显示，在此不在详述。
图5为根据本公开实施例的另一种显示基板的结构示意图。如图5所示，该显示基板包括红色发光器件401、绿色发光器件402和蓝色发光器件403。红色发光器件401包括：红色发光单元R和白色发光单元W；绿色发光器件402包括：绿色发光单元G和白色发光单元W；蓝色发光器件403包括：蓝色发光单元B和白色发光单元W。
需要说明的是，显示基板中的发光器件中可以包括不同颜色的发光单元，例如，红色发光器件401可以包括红色发光单元R和白色发光单元W。当控制红色发光单元R发光时，红色发光器件401可以发出红色光线，当控制白色发光单元W发光时，白色发光单元W可以发出白色光线，经过红色滤光片后，白色光线可以变为红色光线，从而可以得到红色光线，同时提高了红色发光器件的使用寿命。可以理解的是，在图5中，白色发光单元W位于红色发光单元R的上方，在实际应用中可以调换红色发光单元R和白色发光单元W的位置，例如白色发光单元W可以位于红色发光单元R的下方。绿色发光器件402和蓝色发光器件403的工作原理与上述的红色发光器件401的工作原理类似，在此不再详述。
如图4和图5所示，该显示基板还包括：补偿发光器件，补偿发光器件包括白色补偿发光器件404。白色补偿发光器件404包括一个白色发光单元W或叠层设置的多个白色发光单元W。
需要说明的是，在实际应用中，蓝色发光材料衰退最快，绿色发光材料次之，红色发光材料衰退最慢。因此，一般需要对显示基板中的绿色发光器件402和蓝色发光器件403的亮度进行补偿。例如，绿色发光器件402由于发光材料衰退导致绿色光线亮度较低时，利用绿色滤光片可以将白色补偿发光器件404发出的白色光线过滤为绿色光线，对绿色发光器件402的亮度进行补偿，从而使得显示基板中的各个颜色的发光器件发出的光线的亮度均匀，进而可以使得 显示画面均匀，避免出现显示不均一等不良。可以理解的是，白色补偿发光器件404可以利用一个白色发光单元W进行发光，也可以利用多个白色发光单元W进行发光，以提高白色发光器件404的使用寿命。蓝色发光器件403亮度补偿的工作原理与上述的绿色发光器件402的工作原理类似，在此不再详述。
相关技术中，通过红色发光器件401、绿色发光器件402和蓝色发光器件403呈现白色画面时，发光器件的总功耗可以达到480瓦。本公开实施例中的白色补偿发光器件404在工作时可以提高其他发光器件的亮度，在实际应用中，利用白色补偿发光器件404与红色发光器件401、绿色发光器件402和蓝色发光器件403共同呈现白色画面时，发光器件的总功耗可以降低至360瓦，因此本公开实施例中的白色补偿发光器件404还具有降低功耗的效果。
图6为根据本公开实施例的又一种显示基板的结构示意图。如图6所示，补偿发光器件包括绿色补偿发光器件405，绿色补偿发光器件405包括白色发光单元W和绿色发光单元G。
需要说明的是，绿色发光器件402由于发光材料衰退导致绿色光线亮度较低时，绿色补偿发光器件405进行工作，绿色补偿发光器件405中的白色发光单元W可以发出白色光线，利用绿色滤光片可以将白色光线过滤为绿色光线，对绿色发光器件402的亮度进行补偿。或者，绿色补偿发光器件405中的绿色发光单元G发出绿色光线，对绿色发光器件402的亮度进行补偿。这样，使得显示基板中的各个颜色的发光器件发出的光线的亮度均匀，进而可以使得显示画面均匀，避免出现显示不均一等不良。
图7为根据本公开实施例的再一种显示基板的结构示意图。如图7所示，补偿发光器件包括蓝色补偿发光器件406，蓝色补偿发光器件406包括白色发光单元W和蓝色发光单元B。
需要说明的是，蓝色发光器件403由于发光材料衰退导致蓝色光线亮度较低时，蓝色补偿发光器件406进行工作，蓝色补偿发光器件406中的白色发光单元W可以发出白色光线，利用蓝色滤光片可以将白色光线过滤为蓝色光线，对蓝色发光器件403的亮度进行补偿。或者，蓝色补偿发光器件406中的蓝色 发光单元B发出蓝色光线，对蓝色发光器件403的亮度进行补偿。这样，使得显示基板中的各个颜色的发光器件发出的光线的亮度均匀，进而可以使得显示画面均匀，避免出现显示不均一等不良。
在一些实施例中，上述的红色发光单元R包括空穴传输层、红色发光层、电子传输层和电子注入层。可以在阴极和阳极之间施加电压信号，使得红色发光层中形成空穴电子对，以激发发光材料进行发光，从而产生红色光线。绿色发光单元G以及蓝色发光单元B的结构与上述的红色发光单元R的结构基本相同，不同之处在于，绿色发光单元G中的发光层为绿色发光层，蓝色发光单元B中的发光层为蓝色发光层，不同颜色的发光层中的发光材料的特性不同，从而产生不同颜色光线。白色发光单元W结构与上述红色发光单元R的结构也基本相同，不同之处在于，白色发光单元W中的发光层包括红色发光层R、绿色发光层G和蓝色发光层B，在电压的作用下，三个不同颜色的发光层均同时发光，形成的三种不同颜色的光线混合形成白色光线。
进一步需要说明的是，各个发光器件中的发光层可以采用蒸镀或者打印的方式形成。同一发光器件中，不同的发光单元中的发光层可以采用同一工艺形成，也可以采用不同的工艺形成。例如，蓝色补偿发光器件406中的白色发光层可以采用蒸镀工艺形成，蓝色发光层可以采用打印工艺形成；或者，白色发光层和蓝色发光层均采用蒸镀工艺形成。可以理解的是，各个发光器件中的其他膜层可以利用现有技术中的工艺形成，在此不在详述。
在一些实施例中，显示基板还包括：彩膜层5；彩膜层5位于发光器件的出光侧。
需要说明的是，彩膜层可以位于各个发光器件的出光侧。在发光器件中的白色发光单元发出白色光线时，根据实际需要，可以将白色光线过滤为需要颜色的单色光，从而提高发光器件的使用寿命，并对发光器件的亮度进行补偿，进而使得各个颜色的发光器件发出的光线亮度均匀。
在一些实施例中，显示基板还包括：发光驱动电路3；发光驱动电路3与第一信号端N1和第二信号端N2连接，并且配置为控制第一信号端N1和第二信号 端N2输出相应的信号。
需要说明的是，发光驱动电路可以为第一信号端N1和第二信号端N2提供电压信号，使得第一信号端N1的电压与第二信号端N2的电压不同，从而驱动不同的发光单元进行发光，使得同一时间仅部分发光单元发光，以提高发光器件的使用寿命。
基于同一发明构思，本公开实施例提供了一种显示装置，该显示装置包括本公开上述实施例中的显示基板。根据本公开的显示装置可以包括手机、平板电脑、智能电视等终端设备，其实现原理与上述实施例中的显示基板的实现原理类似，在此不在赘述。
可以理解的是，以上实施方式仅仅是为了说明本公开的原理而采用的示例性实施方式，然而本公开并不局限于此。对于本领域内的普通技术人员而言，在不脱离本公开的精神和实质的情况下，可以做出各种变型和改进，这些变型和改进也视为本公开的保护范围。

Claims (17)

  1. 一种发光器件，包括：
    相对设置的第一电极和第二电极；
    在所述第一电极和所述第二电极之间叠层设置的多个发光单元；以及
    位于相邻所述发光单元之间的第三电极，
    其中，所述第一电极和所述第二电极电连接均连接至第一信号端，所述第三电极连接至第二信号端，所述第一信号端配置为提供第一信号并且所述第二信号端配置为提供第二信号，使得在同一时间所述多个发光单元中的仅部分发光单元发光。
  2. 根据权利要求1所述的发光器件，其中，所述多个发光单元发出的光颜色相同。
  3. 根据权利要求1所述的发光器件，其中，部分所述发光单元发出的光为单色光，部分所述发光单元发出的光为复色光，所述复色光包括所述单色光。
  4. 根据权利要求3所述的发光器件，其中，所述复色光是白光。
  5. 一种显示基板，包括多个发光器件，其中，所述多个发光器件中的至少部分发光器件为如所述权利要求1-4中任一项所述的发光器件。
  6. 根据权利要求5所述的显示基板，其中，所述至少部分发光器件包括第一发光器件、第二发光器件和第三发光器件，
    所述第一发光器件包括第一单色发光单元，所述第一单色发光单元配置为发射第一颜色的单色光，
    所述第二发光器件包括第二单色发光单元，所述第二单色发光单元配置为发射第二颜色的单色光，所述第二颜色不同于所述第一颜色，
    所述第三发光器件包括第三单色发光单元，所述第三单色发光单元配置为发射第三颜色的单色光，所述第三颜色不同于所述第一颜色和所述第二颜色。
  7. 根据权利要求6所述的显示基板，其中，
    所述第一发光器件还包括第一复色发光单元，所述第一复色发光单元配置为发射第一复色光，所述第一复色光包括所述第一颜色的单色光；
    所述第二发光器件还包括第二复色发光单元，所述第二复色发光单元配置为发射第二复色光，所述第二复色光包括所述第二颜色的单色光；
    所述第三发光器件还包括第三复色发光单元，所述第三复色发光单元配置为发射第三复色光，所述第三复色光包括所述第三颜色的单色光。
  8. 根据权利要求7所述的显示基板，其中，所述第一复色光、所述第二复色光和所述第三复色光均为白光。
  9. 根据权利要求6或7所述的显示基板，其中，所述第一发光器件包括多个所述第一单色发光单元，所述第二发光器件包括多个所述第二单色发光单元，所述第三发光器件包括多个所述第三单色发光单元。
  10. 根据权利要求6至9中任一项所述的显示基板，其中，所述至少部分发光器件还包括：补偿发光器件；
    所述补偿发光器件包括第四复色发光单元，所述第四复色发光单元配置为发射第四复色光。
  11. 根据权利要求10所述的显示基板，其中，所述补偿发光器件还包括所述第一单色发光单元、所述第二单色发光单元和所述第三单色发光单元中的至少一者。
  12. 根据权利要求11所述的显示基板，其中，所述第一单色发光单元配置为发射红光，所述第二单色发光单元配置为发射绿光，所述第三单色发光单元配置为发射蓝光，第四复色发光单元配置为发射白光。
  13. 根据权利要求12所述的显示基板，其中，所述补偿发光器件包括所述第二单色发光单元。
  14. 根据权利要求12所述的显示基板，其中，所述补偿发光器件包括所述第三单色发光单元。
  15. 根据权利要求7或10所述的显示基板，还包括：彩膜层；
    所述彩膜层位于所述多个发光器件的出光侧。
  16. 根据权利要求1所述的显示基板，还包括：发光驱动电路，其中，所述发光驱动电路与所述第一信号端和所述第二信号端连接，并且配置为控制所述第一信号端输出所述第一信号并且控制所述第二信号端输出所述第二信号。
  17. 一种显示装置，包括如权利要求5至16中任一项所述的显示基板。
PCT/CN2021/087757 2020-04-29 2021-04-16 发光器件、显示基板及显示装置 WO2021218665A1 (zh)

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