WO2018153147A1 - 显示装置及其驱动方法 - Google Patents

显示装置及其驱动方法 Download PDF

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Publication number
WO2018153147A1
WO2018153147A1 PCT/CN2017/116461 CN2017116461W WO2018153147A1 WO 2018153147 A1 WO2018153147 A1 WO 2018153147A1 CN 2017116461 W CN2017116461 W CN 2017116461W WO 2018153147 A1 WO2018153147 A1 WO 2018153147A1
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WIPO (PCT)
Prior art keywords
display unit
liquid crystal
light
display
electrode
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Ceased
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PCT/CN2017/116461
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English (en)
French (fr)
Inventor
赖韦霖
文官印
许正印
黄建邦
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BOE Technology Group Co Ltd
Ordos Yuansheng Optoelectronics Co Ltd
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BOE Technology Group Co Ltd
Ordos Yuansheng Optoelectronics Co Ltd
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Application filed by BOE Technology Group Co Ltd, Ordos Yuansheng Optoelectronics Co Ltd filed Critical BOE Technology Group Co Ltd
Priority to US16/072,791 priority Critical patent/US11199742B2/en
Publication of WO2018153147A1 publication Critical patent/WO2018153147A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • 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
    • G02F1/133509—Filters, e.g. light shielding masks
    • G02F1/133514—Colour filters
    • 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
    • G02F1/133553—Reflecting elements
    • 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
    • G02F1/133618—Illuminating devices for ambient light
    • 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
    • H10K50/81—Anodes
    • H10K50/816—Multilayers, e.g. transparent multilayers
    • 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
    • H10K50/82—Cathodes
    • H10K50/828—Transparent cathodes, e.g. comprising thin metal layers
    • 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
    • H10K59/50—OLEDs integrated with light modulating elements, e.g. with electrochromic elements, photochromic elements or liquid crystal elements
    • 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
    • H10K59/80—Constructional details
    • H10K59/805—Electrodes
    • H10K59/8052—Cathodes
    • H10K59/80524—Transparent cathodes, e.g. comprising thin metal layers
    • 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
    • H10K59/80—Constructional details
    • H10K59/875—Arrangements for extracting light from the devices
    • H10K59/878—Arrangements for extracting light from the devices comprising reflective means
    • 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
    • G02F2201/00—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00
    • G02F2201/44—Arrangements combining different electro-active layers, e.g. electrochromic, liquid crystal or electroluminescent layers
    • 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
    • H10K59/38—Devices specially adapted for multicolour light emission comprising colour filters or colour changing media [CCM]
    • 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
    • H10K59/80—Constructional details
    • H10K59/805—Electrodes
    • H10K59/8051—Anodes
    • H10K59/80517—Multilayers, e.g. transparent multilayers

Definitions

  • Embodiments of the present disclosure relate to a display device and a method of driving the same.
  • LCD liquid crystal display
  • liquid crystal displays can be divided into transmissive, reflective, and transflective liquid crystal displays according to optical technology.
  • a display device provided by an embodiment of the present disclosure includes a sub-pixel unit including: a reflective liquid crystal display unit having a reflective display region including a liquid crystal layer and a reflective layer; and an electroluminescent display unit having a light emitting display a region, wherein the light emitting display region overlaps with the reflective display region; wherein the reflective layer and the electroluminescent display unit are respectively located on both sides of the liquid crystal layer.
  • the reflective liquid crystal display unit further includes: a first substrate and a second substrate opposite to each other, wherein the liquid crystal layer is located between the first substrate and the second substrate; and, the first driving An electrode and a second driving electrode configured to control deflection of liquid crystal molecules in the liquid crystal layer, wherein the electroluminescent display unit is located on the first substrate, including: a first electrode, a second electrode, and the first electrode a light-emitting layer between an electrode and the second electrode.
  • the light emitting display region of the electroluminescent display unit completely covers the reflective display region of the reflective liquid crystal display unit, and the first electrode and the first portion of the electroluminescent display unit Both electrodes are transparent electrodes.
  • the size of the reflective display area of the reflective liquid crystal display unit is substantially the same as the size of the light emitting display area of the electroluminescent display unit.
  • the electroluminescent display unit is located between the first substrate and the liquid crystal layer, and one of the first electrode and the second electrode of the electroluminescent display unit is used as One of the first driving electrode and the second driving electrode of the reflective liquid crystal display unit.
  • the first substrate is between the electroluminescent display unit and the liquid crystal layer.
  • the display device further includes a cover plate on a side of the electroluminescent display unit remote from the liquid crystal layer.
  • At least a portion of the reflective display region of the reflective liquid crystal display unit is not covered by the light emitting display region of the electroluminescent display unit, and the first electrode of the electroluminescent display unit And one of the second electrodes is a reflective electrode.
  • the other of the first driving electrode and the second driving electrode of the reflective liquid crystal display unit is a transparent electrode.
  • the reflective liquid crystal display unit further includes a first color filter layer configured to emit light of a first color, and the color filter layer has the first color .
  • the display device further includes a control unit configured to selectively control the reflective liquid crystal display unit and the electroluminescent display unit for display.
  • the display device further includes: an ambient light detecting unit configured to acquire a light intensity data signal of the ambient light received by the display device, wherein the control unit is further configured to be based on the light intensity data Signal selective control of the reflective liquid crystal display unit and the electroluminescent display unit for display.
  • control unit is further configured to control the reflective liquid crystal display unit and the electroluminescent display unit to simultaneously display when the light intensity data signal is less than a first predetermined value, and The display light emitted by the electroluminescence display unit has a first brightness; and in the case that the light intensity data signal is greater than the first predetermined value, controlling the display light emitted by the electroluminescence display unit to have a second brightness, The second brightness is less than the first brightness, wherein the first predetermined value is less than or equal to the second predetermined value.
  • the value of the second brightness is substantially zero.
  • Another embodiment of the present disclosure provides a driving method for any of the above display devices, comprising: controlling the reflective liquid crystal display unit and the electroluminescent display unit to simultaneously display under illumination of the first ambient light And the display light emitted by the electroluminescent display unit has a first brightness; and under the illumination of the second ambient light, controlling the display light emitted by the electroluminescent display unit to have a second brightness, the second brightness being less than The first brightness, wherein a light intensity of the first ambient light is less than a light intensity of the second ambient light.
  • the value of the second brightness is substantially zero.
  • the first ambient light is indoor ambient light and the second ambient light is indoor ambient light.
  • FIG. 1 is a schematic structural view of a transmissive LCD
  • FIG. 2 is a schematic structural view of a reflective LCD
  • FIG. 3 is a schematic structural view of an organic light emitting diode display
  • FIG. 4 is a schematic structural diagram of a display device according to an embodiment of the present disclosure.
  • FIG. 5A is a schematic structural diagram of a display device according to an embodiment of the present disclosure.
  • FIG. 5B is a schematic structural diagram of a display device according to an embodiment of the present disclosure.
  • FIG. 6 is a schematic structural diagram of another display device according to an embodiment of the present disclosure.
  • FIG. 7 is a schematic structural diagram of still another display device according to an embodiment of the present disclosure.
  • FIG. 8 is a schematic structural diagram of a display device according to an embodiment of the present disclosure.
  • FIG. 9 is a schematic structural diagram of another display device according to an embodiment of the present disclosure.
  • FIG. 10 is a schematic structural diagram of still another display device according to an embodiment of the present disclosure.
  • FIG. 11 is a schematic structural diagram of a display device according to an embodiment of the present disclosure.
  • FIG. 12 is a flowchart of a driving method of a display device according to an embodiment of the present disclosure.
  • the transmissive LCD includes an array substrate 11 and a color filter substrate 12 disposed opposite to each other, and a liquid crystal layer 13 between the array substrate 11 and the color filter substrate 12.
  • the light 14 of the transmissive LCD is from the backlight module 15.
  • the reflective LCD includes an array substrate 11 and a color filter substrate 12 disposed opposite to each other, a liquid crystal layer 13 between the array substrate 11 and the color filter substrate 12, and a reflective layer 21 on the array substrate.
  • the reflective layer 21 is for reflecting external light rays 14, and the display light rays 14 of the reflective LCD are from external light reflected by the reflective layer 21.
  • the light of the transflective LCD is partly from the backlight module and partly from the outside light.
  • the LCD with light from the backlight module has better brightness and image quality, but it also consumes more power.
  • the LCD with light from outside light can make full use of the surrounding light, and its power consumption is greatly reduced, but the brightness is The picture quality is poor.
  • OLED Organic Light-Emitting Diode
  • OLED is regarded as one of the most promising flat display technologies in the future after LCD. It is also called organic electroluminescent display. Its illumination principle is similar to that of LED.
  • the material is utilized, but the material of the OLED is an organic substance, and its structure is as shown in FIG. 3.
  • the OLED includes a back plate 31, an anode 32 disposed on the back plate 31, and a light-emitting layer 33 disposed on the anode 32.
  • the cathode 34 on the light-emitting layer 33 in the direction of the arrow, indicates the direction of propagation of light emitted from the light-emitting layer 33.
  • OLED has the advantages of active illumination, high response speed and the like.
  • transmissive LCDs and OLEDs which are often used as displays for mobile products, have clear indoors, but in outdoor sunlight, transmissive LCDs and OLEDs are too bright for external viewing because of the external ambient light. Identification.
  • the current common solution is to increase the brightness of the display to facilitate viewing, but this solution will result in increased power consumption of the display and will accelerate the decay of the display life.
  • Embodiments of the present disclosure provide a display device and a driving method thereof for reducing power consumption of a display and extending the life of the display when the ambient light is strong.
  • An embodiment of the present disclosure provides a display device including a plurality of sub-pixel units, each of the sub-pixel units including:
  • a reflective liquid crystal display unit having a reflective display area including a liquid crystal layer and a reflective layer
  • An electroluminescent display unit having a light emitting display area, wherein the light emitting display area overlaps with the reflective display area;
  • the reflective layer and the electroluminescent display unit are respectively located on two sides of the liquid crystal layer.
  • an embodiment of the present disclosure provides a display device including a plurality of sub-pixel units, each of which includes a first display unit 41 and a second display unit 42 located on the first display unit 41.
  • the first display unit 41 includes an array substrate 410 and a first substrate 411 disposed opposite to each other, liquid crystal molecules 412 located between the array substrate 410 and the first substrate 411, and a transparent electrode 413 located on a side of the first substrate 411 near the liquid crystal molecules 412. a reflective layer electrode 414 located on the side of the array substrate 410 near the liquid crystal molecules 412;
  • the transparent electrode 413 and the reflective layer electrode 414 are used to adjust the deflection of the liquid crystal molecules 412;
  • the second display unit 42 includes a first electrode 421 located in a predetermined region of the first substrate 411 away from the liquid crystal molecules 412, an organic light emitting layer 422 on the first electrode 421, and a second electrode on the organic light emitting layer 422. 423.
  • the display device uses the second display unit as the main display light source, and the external light serves as an auxiliary display light source, and the external light is reflected by the reflective layer electrode. After that, the liquid crystal molecules of different degrees of deflection are used for display; when the display device in the embodiment of the present disclosure is placed in an outdoor environment, since the external light is strong at this time, external light can be used as the main display light source.
  • the second display unit serves as an auxiliary display light source, and the external light is reflected by the reflective layer electrode, and then passes through liquid crystal molecules of different deflection degrees for display. At this time, the external light can be effectively utilized to reduce the power consumption of the display device and prolong the life of the display. At the same time, it can convert the problem of viewing and recognition that is not conducive to the human eye caused by strong external light.
  • the first display unit in the embodiment of the present disclosure is a reflective liquid crystal display unit;
  • the second display unit is an electroluminescence display unit, for example, an organic electroluminescence display unit.
  • the electrode layer 414 in the reflective liquid crystal display unit 41 serves as a driving electrode for controlling deflection of liquid crystal molecules in the liquid crystal layer 412 on the one hand, and as a reflective layer on the other hand.
  • a reflective layer different from the driving electrodes may be disposed in the reflective liquid crystal display unit 41.
  • the first display unit in the embodiment of the present disclosure is a reflective liquid crystal display unit in a rotating mode in an edge scene; or a reflective liquid crystal display unit in a twisted nematic type; or a reflective liquid crystal display unit in a vertical alignment type; Or a reflective liquid crystal display unit of advanced super-dimensional field conversion mode.
  • the second display unit in the embodiment of the present disclosure is a double-sided emission organic electroluminescence display unit; or a top emission organic electroluminescence display unit; or a bottom emission organic electroluminescence display unit.
  • the second display unit in the embodiment of the present disclosure is a double-sided emission organic electroluminescence display unit.
  • the reflective liquid crystal display unit 41 has a reflective display region R1.
  • the reflective display region R1 is patterned by reflecting light from the outside of the reflective liquid crystal display unit 41.
  • the second display unit 42 has a light-emitting display area R2.
  • the first electrode 421 in the embodiment of the present disclosure is a transparent electrode, and the second electrode 423 is a transparent electrode.
  • the second display unit in the embodiment of the present disclosure may perform double-sided illumination.
  • the material of the first electrode 421 is, for example, the same as that of the second electrode 423.
  • a single-layer film material of indium tin oxide (ITO) or indium zinc oxide (IZO) may be selected, and a composite film material of ITO and IZO may also be selected.
  • Other types of transparent conductive materials can also be selected during the actual production process. Embodiments of the present disclosure do not limit the specific materials of the first electrode and the second electrode.
  • the first substrate 411 is, for example, a glass substrate.
  • the thickness of the first substrate 411 is, for example, greater than 100 micrometers.
  • the light-emitting display region R2 of the second display unit 42 completely covers the reflective display region R1 of the reflective liquid crystal display unit 41.
  • the size of the light-emitting display region R2 of the second display unit 42 is substantially the same as the reflective display region R1 of the reflective liquid crystal display unit 41.
  • the size of the area of the orthographic projection area of the first electrode 421 on the first substrate 411 in the embodiment of the present disclosure is equal to the area of the first substrate 411; or the second electrode 423 is on the first substrate 411.
  • the area of the upper projection area is equal to the area of the first substrate 411.
  • the first electrode 421 and/or the second electrode 423 are discontinuous, intermittent electrodes.
  • the first electrode 421 is a continuous electrode, and the first electrode 421 is in the orthographic projection area on the first substrate 411.
  • the size of the area is equal to the area of the first substrate 411.
  • the second electrode 423 is a continuous electrode, and the size of the area of the orthographic projection area of the second electrode 423 on the first substrate 411 is equal to the area of the first substrate 411.
  • the size of the area of the orthographic projection area of the first electrode 421 on the first substrate 411 in the embodiment of the present disclosure may also be different from the area of the first substrate 411, and the second electrode 423 is on the first substrate 411.
  • the area size of the upper orthographic projection area may also be different from the area of the first substrate 411.
  • the organic electroluminescence display unit when the display device is placed in an indoor environment, light emitted by the organic electroluminescence display unit is used as a main display light source due to the weak ambient light, and the external environment light is used as an auxiliary display light source. . Since the organic electroluminescent display unit is double-sidedly emitted, the light emitted above the organic electroluminescent display unit can be directly used for display by the human eye; the light emitted under the organic electroluminescent display unit is reflected upward by the reflective layer electrode 414.
  • the upward light passes through the liquid crystal molecules of different deflection degrees for display; and the light of the weak external environment is incident on the liquid crystal molecules 412 in the first display unit to reach the reflective layer electrode 414, and the partial light is also reflected by the reflective layer electrode.
  • the upward and upward light rays are used for display after passing through liquid crystal molecules of different degrees of deflection.
  • the light source can be effectively utilized to reduce the power consumption of the display device, and the direction of the arrow in FIG. 5A indicates the direction of light propagation.
  • the light emitted by the organic electroluminescence display unit is used as an auxiliary display light source, and the light of the external environment is mainly used.
  • Display light source The light of the strong external environment is incident on the liquid crystal molecules 412 in the first display unit and reaches the reflective layer electrode 414. The part of the light is reflected by the reflective layer electrode, and the upward light passes through the liquid crystal molecules of different deflection degrees as the main display light source.
  • the light source of the organic electroluminescent display unit is used as an auxiliary display light source to adjust the brightness of the device with the main display light source.
  • the external light can be effectively utilized, the power consumption of the display device can be reduced, and the ambient light can be converted. Bright and difficult to identify, it is more energy efficient than indoor environment.
  • the electroluminescent display unit 42 is located between the first substrate 411 and the liquid crystal display layer.
  • the drive electrode 413 of the reflective liquid crystal display unit 41 and the first electrode 421 of the electroluminescence display unit 42 are the same electrode. In this way, the structure of the device can be simplified and the manufacturing cost can be reduced. It is to be understood that, although not shown, in another example, the driving electrode 413 of the reflective liquid crystal display unit 41 and the first electrode 421 of the electroluminescent display unit 42 may be different electrodes, and may be between the two An insulating layer is inserted.
  • the display device may further include a control unit C configured to selectively control the reflective liquid crystal display unit 41 and the electroluminescence display unit 42 for display.
  • the control unit C is electrically connected to the reflective liquid crystal display unit 41 and the electroluminescence display unit 42.
  • the display device may further include: an ambient light detecting unit S configured to acquire a light intensity data signal of the ambient light received by the display device.
  • the control unit is further configured to selectively control the display of the reflective liquid crystal display unit and the electroluminescent device 42 in accordance with the light intensity data signal.
  • the ambient light detecting unit S is electrically connected to the control unit C.
  • control unit C is further configured to control the reflective liquid crystal display unit 41 and the electroluminescence display unit 42 to simultaneously display when the light intensity data signal is less than a first predetermined value, and
  • the display light emitted by the electroluminescence display unit 42 has a first brightness; and in the case that the light intensity data signal is greater than the first predetermined value, the display light emitted by the electroluminescence display unit is controlled to have a second brightness, The second brightness is less than the first brightness.
  • the first predetermined value is, for example, less than or equal to the second predetermined value.
  • control unit C is further configured to control the electroluminescent display unit 42 not to display if the light intensity data signal is greater than a first predetermined value, such that the value of the second brightness is substantially zero .
  • the first predetermined value is less than or equal to the second predetermined value.
  • control unit C and the ambient light detecting unit S are not shown in the drawings of other embodiments of the present disclosure, the control unit C and the ambient light detecting unit S may be similarly disposed in other The display device provided by the embodiment.
  • the ambient light detecting unit S may include, for example, an optoelectronic replacement device.
  • the control unit C may be a circuit board or a combination of a plurality of circuit boards for implementing the functions as described above.
  • the one circuit board or a combination of the plurality of circuit boards may include: (1) one or more processors; (2) one or more non-transitory computer readable computers connected to the processor And (3) firmware executable by the processor to be stored in the memory.
  • the organic electroluminescent display unit in the embodiment of the present disclosure further includes a hole transporting or injecting layer 61 disposed between the first electrode 421 and the organic light emitting layer 422, and/or disposed in an organic An electron transport or injection layer 62 between the light emitting layer 422 and the second electrode 423. Only the case where the hole transport or injection layer 61 and the electron transport or injection layer 62 are simultaneously provided is shown. The arrangement of the hole transport or injection layer and the electron transport or injection layer is not limited and will not be described herein.
  • the display device in the embodiment of the present disclosure further includes a package disposed on the second electrode 423 for protecting the organic electroluminescent display unit.
  • Cover plate 63 the display device in the embodiment of the present disclosure.
  • the first substrate 411 in the embodiment of the present disclosure is provided with a color film layer 70 on the side close to the liquid crystal molecules 412; the organic electroluminescent display unit 42 is configured to be capable of emitting the color film layer 70.
  • the color film layer 70 is a red color film layer, and the organic electroluminescence display unit is configured to emit red light.
  • the organic electroluminescent display unit is configured to emit light of a certain color, and the light emitting layer of the organic electroluminescent display unit directly emits light of such color, or may be an organic electroluminescent display unit.
  • the luminescent layer directly emits light through another color film layer to emit light of such color.
  • the color of the color filter layer 70 is not limited, and may be, for example, blue, yellow, green, or the like.
  • the second display unit in the embodiment of the present disclosure is a bottom emission organic electroluminescence display unit.
  • the first electrode 421 in the embodiment of the present disclosure is a transparent electrode
  • the second electrode 423 is a non-transparent electrode
  • the material of the first electrode 421 may be a single layer film material of ITO or zinc IZO, or a composite film material of ITO and IZO may be selected.
  • the material of the second electrode 423 may be selected from a metal material such as one selected from the group consisting of molybdenum (Mo), copper (Cu), aluminum (Al), or the like.
  • Mo molybdenum
  • Cu copper
  • Al aluminum
  • At least a portion of the reflective display region R1 of the reflective liquid crystal display unit 41 is not covered by the light-emitting display region R2 of the electroluminescent display unit 42.
  • the area of the orthographic projection area of the first electrode 421 on the first substrate 411 in the embodiment of the present disclosure is smaller than the area of the first substrate 411
  • the second electrode 423 is on the first substrate 411 .
  • the area of the orthographic projection area is smaller than the area of the first substrate 411.
  • the size of the area of the first electrode 421 and the second electrode 423 is set according to actual production needs.
  • At least a portion of the reflective display region R1 of the reflective liquid crystal display unit 41 is not illuminated by the light-emitting display region of the electroluminescent display unit 42 because the bottom-emitting organic electroluminescent display unit is non-transparent.
  • the R2 coverage allows external light to enter the first display unit 41 through the at least one portion, thereby effectively converting external light, thereby reducing the power consumption and eliminating the problem that the ambient light is too bright for the human eye to view and recognize.
  • the embodiments of the present disclosure can effectively utilize the strong external light and reduce the power consumption of the display device.
  • the direction of the arrow in Fig. 8 indicates the direction in which the light is propagated.
  • the organic electroluminescent display unit in the embodiment of the present disclosure further includes a hole transporting or injecting layer 61 disposed between the first electrode 421 and the organic light emitting layer 422, and/or disposed in an organic An electron transport or injection layer 62 between the light emitting layer 422 and the second electrode 423. Only the case where the hole transport or injection layer 61 and the electron transport or injection layer 62 are simultaneously provided is shown.
  • the display device in the embodiment of the present disclosure further includes a package disposed on the second electrode 423 for protecting the organic electroluminescent display unit.
  • Cover plate 63 disposed on the second electrode 423 for protecting the organic electroluminescent display unit.
  • the first substrate 411 in the embodiment of the present disclosure is provided with a color film layer 70 on the side close to the liquid crystal molecules 412; the organic electroluminescent display unit is configured to emit color with the color film layer 70. Substantially the same light.
  • the color film layer 70 is a red color film layer, and the organic electroluminescence display unit is configured to emit red light.
  • the organic electroluminescent display unit is configured to emit light of a certain color, and the light emitting layer of the organic electroluminescent display unit directly emits light of such color, or may be an organic electroluminescent display unit.
  • the luminescent layer directly emits light through another color film layer to emit light of such color.
  • the color of the color filter layer 70 is not limited, and may be, for example, blue, yellow, green, or the like.
  • the second display unit in the embodiment of the present disclosure is a top emission organic electroluminescence display unit.
  • the first electrode 421 in the embodiment of the present disclosure is a non-transparent electrode
  • the second electrode 423 is a transparent electrode
  • the material of the second electrode 423 may be a single layer film material of ITO or zinc IZO, or a composite film material of ITO and IZO may be selected. Other types of transparent conductive materials can also be selected during the actual production process.
  • the material of the first electrode 421 may be selected from a metal material such as a combination of one or more of metals such as molybdenum (Mo), copper (Cu), and aluminum (Al).
  • Mo molybdenum
  • Cu copper
  • Al aluminum
  • the size of the area of the orthographic projection area of the first electrode 421 on the first substrate 411 in the embodiment of the present disclosure is smaller than the area of the first substrate 411
  • the second electrode 423 is on the first substrate 411 .
  • the area of the orthographic projection area is smaller than the area of the first substrate 411.
  • the size of the area of the first electrode 421 and the second electrode 423 in the embodiment of the present disclosure may be set according to actual production needs.
  • the area of the organic electroluminescent display unit is smaller than the area of the first display unit 41, so that external light enters the first display unit 41, thereby effectively converting The external light can reduce the power consumption and eliminate the problem that the external environment is too bright and not conducive to the viewing and recognition of the human eye.
  • the embodiments of the present disclosure can effectively utilize the strong external light and reduce the power consumption of the display device.
  • the direction of the arrow in Fig. 11 indicates the direction in which the light is propagated.
  • the organic electroluminescent display unit in the embodiment of the present disclosure further includes a hole transporting or injecting layer 61 disposed between the first electrode 421 and the organic light emitting layer 422, and/or disposed on the organic light emitting layer 422 and the second Electron transport or injection layer 62 between electrodes 423.
  • a hole transporting or injecting layer 61 disposed between the first electrode 421 and the organic light emitting layer 422, and/or disposed on the organic light emitting layer 422 and the second Electron transport or injection layer 62 between electrodes 423.
  • the hole transport or injection layer 61 and the electron transport or injection layer 62 are simultaneously provided is given.
  • the arrangement of the hole transport or injection layer 61 and the electron transport or injection layer 62 can be referred to FIG.
  • the display device in the embodiment of the present disclosure further includes a package cover 63 disposed on the second electrode 423 for protecting the organic electroluminescent display unit.
  • the first substrate 411 in the embodiment of the present disclosure is provided with a color film layer 70 on the side close to the liquid crystal molecules 412; the organic electroluminescence display unit is configured to emit light substantially the same as the color of the color film layer 70.
  • the color film layer 70 is a red color film layer, and the organic electroluminescence display unit is configured to emit red light, as shown in FIG.
  • the organic electroluminescent display unit is configured to emit light of a certain color, and the light emitting layer of the organic electroluminescent display unit directly emits light of such color, or may be an organic electroluminescent display unit.
  • the luminescent layer directly emits light through another color film layer to emit light of such color.
  • the color of the color filter layer 70 is not limited, and may be, for example, blue, yellow, green, or the like.
  • an embodiment of the present disclosure further provides a driving method of the above display device, including:
  • the display light emitted by the electroluminescent display unit is controlled to have a second brightness, and the second brightness is less than the first brightness, under the illumination of the second ambient light.
  • the driving method provided in this embodiment includes:
  • S1202 Control the operation of the first display unit in an outdoor environment, and control whether the second display unit is working or not.
  • the intensity of the first ambient light that impinges on the display device in an indoor environment is, for example, less than the intensity of the second ambient light that is illuminated onto the display device in an outdoor environment.
  • the intensity of the display light emitted by the second display unit can be reduced at this time due to the strong outdoor light.
  • the second display unit is directly controlled to not emit light, and at this time, the light intensity emitted by the second display unit is substantially zero.
  • the second display unit in the embodiment of the present disclosure is an organic electroluminescence display unit that operates in an active driving manner or in a passive driving manner.
  • an embodiment of the present disclosure provides a display device including a first display unit and a second display unit located on the first display unit.
  • the first display unit includes an array substrate and a first substrate disposed opposite to each other. a liquid crystal molecule between the array substrate and the first substrate, a transparent electrode on a side of the first substrate near the liquid crystal molecule, a reflective layer electrode on a side of the array substrate near the liquid crystal molecule; and a transparent electrode and a reflective layer electrode for adjusting liquid crystal molecules Deflection;
  • the second display unit comprises a first electrode located in a predetermined area of the first substrate away from the liquid crystal molecule side, an organic light emitting layer on the first electrode, and a second electrode on the organic light emitting layer.
  • the display device uses the second display unit as the main display light source, and the external light serves as an auxiliary display light source, and the external light is reflected by the reflective layer electrode. After that, the liquid crystal molecules of different degrees of deflection are used for display; when the display device in the embodiment of the present disclosure is placed in an outdoor environment, since the external light is strong at this time, external light can be used as the main display light source.
  • the second display unit serves as an auxiliary display light source, and the external light is reflected by the reflective layer electrode, and then passes through liquid crystal molecules of different deflection degrees for display. In this way, the external light can be effectively utilized to reduce the power consumption of the display device, prolong the life of the display, and at the same time, it can convert the problem of viewing and recognition that is unfavorable to the human eye caused by strong external light.

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Abstract

一种显示装置包括，包括子像素单元，该子像素单元包括：反射式液晶显示单元(41)，具有反射显示区域(R1)，包括液晶层(412)和反射层(414)；以及，电致发光显示单元(42)，具有发光显示区域(R2)，其中，发光显示区域(R2)与反射显示区域(R1)重叠；其中，反射层(414)和电致发光显示单元(42)分别位于液晶层(412)的两侧。

Description

显示装置及其驱动方法
本申请要求于2017年2月22日递交的中国专利申请第201710096263.0号的优先权，在此全文引用上述中国专利申请公开的内容以作为本申请的一部分。
技术领域
本公开的实施例涉及一种显示装置及其驱动方法。
背景技术
随着显示技术的突飞猛进，传统的阴极射线管显示器由于体积庞大且辐射严重，近年来已逐渐淡出高端显示器的市场，取而代之的，是具有低辐射、低耗电且轻薄的液晶显示器(Liquid Crystal Display，LCD)，而液晶显示器又可依光学技术分为透射式、反射式，以及半透射半反射式液晶显示器。
发明内容
本公开实施例提供的一种显示装置，包括子像素单元，该子像素单元包括：反射式液晶显示单元，具有反射显示区域，包括液晶层和反射层；以及电致发光显示单元，具有发光显示区域，其中，所述发光显示区域与所述反射显示区域重叠；其中，所述反射层和所述电致发光显示单元分别位于所述液晶层的两侧。
在一个示例中，反射式液晶显示单元还包括：彼此相对的第一基板和第二基板，其中，所述液晶层位于所述第一基板和所述第二基板之间；以及，第一驱动电极和第二驱动电极，构造为控制所述液晶层中的液晶分子的偏转，所述电致发光显示单元位于所述第一基板上，包括：第一电极、第二电极以及位于所述第一电极和所述第二电极之间的发光层。
在一个示例中，所述电致发光显示单元的所述发光显示区域完全覆盖反射式液晶显示单元的所述反射显示区域，且所述电致发光显示单元的所述第一电极和所述第二电极均为透明电极。
在一个示例中，反射式液晶显示单元的所述反射显示区域的大小与所述电致发光显示单元的所述发光显示区域的大小实质相同。
在一个示例中，所述电致发光显示单元位于所述第一基板与所述液晶层之间，且所述电致发光显示单元的所述第一电极和所述第二电极之一用作所述反射式液晶显示单元的所述第一驱动电极和所述第二驱动电极之一。
在一个示例中，所述第一基板位于所述电致发光显示单元与所述液晶层之间。
在一个示例中，所述显示装置还包括盖板，位于所述电致发光显示单元的远离所述液晶层的一侧。
在一个示例中，反射式液晶显示单元的所述反射显示区域的至少一部分未被所述电致发光显示单元的所述发光显示区域覆盖，且所述电致发光显示单元的所述第一电极和所述第二电极之一为反射电极。
在一个示例中，所述反射式液晶显示单元的所述第一驱动电极和所述第二驱动电极之另一为透明电极。
在一个示例中，所述反射式液晶显示单元还包括第一滤色器层，所述电致发光显示单元构造为发出第一颜色的光，且所述滤色器层具有所述第一颜色。
在一个示例中，所述显示装置还包括：控制单元，构造为选择性的控制所述反射式液晶显示单元和所述电致发光显示单元进行显示。
在一个示例中，所述显示装置还包括：环境光检测单元，构造为获取所述显示装置接收到的环境光的光强数据信号，其中，所述控制单元进一步构造为根据所述光强数据信号选择性的控制所述反射式液晶显示单元和所述电致发光显示单元进行显示。
在一个示例中，所述控制单元进一步构造为在所述光强数据信号小于第一预定值的情况下，控制所述反射式液晶显示单元和所述电致发光显示单元同时进行显示，且所述电致发光显示单元发出的显示光具有第一亮度；并且在所述光强数据信号大于第一预定值的情况下，控制所述电致发光显示单元发出的显示光具有第二亮度，所述第二亮度小于所述第一亮度，其中所述第一预定值小于或等于所述第二预定值。
在一个示例中，所述第二亮度的值实质为零。
本公开另一实施例提供一种用于上述任一项显示装置的驱动方法，包括：在第一环境光照射下，控制所述反射式液晶显示单元和所述电致发光显示单元同时进行显示，且所述电致发光显示单元发出的显示光具有第一亮度；以及在第二环境光照射下，控制所述电致发光显示单元发出的显示光具有第二亮度，所述第二亮度小于所述第一亮度，其中，所述第一环境光的光强小于所述第二环境光的光强。
在一个示例中，所述第二亮度的值实质上为零。
在一个示例中，所述第一环境光为室内环境光，所述第二环境光为室内环境光。
附图说明
为了更清楚地说明本公开实施例的技术方案，下面将对实施例的附图作简单地介绍，显而易见地，下面描述中的附图仅仅涉及本公开的一些实施例，而非对本公开的限制。
图1为一种透射式LCD结构示意图；
图2为一种反射式LCD结构示意图；
图3为一种有机发光二极管显示器结构示意图；
图4为本公开实施例提供的一种显示装置结构示意图；
图5A为本公开实施例提供的一种显示装置结构示意图；
图5B为本公开实施例提供的一种显示装置结构示意图；
图6为本公开实施例提供的另一显示装置结构示意图；
图7为本公开实施例提供的又一显示装置结构示意图；
图8为本公开实施例提供的一种显示装置结构示意图；
图9为本公开实施例提供的另一显示装置结构示意图；
图10为本公开实施例提供的又一显示装置结构示意图；
图11为本公开实施例提供的一种显示装置结构示意图；
图12为本公开实施例提供的一种显示装置的驱动方法流程图。
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。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。
如图1所示，透射式LCD包括相对设置的阵列基板11和彩膜基板12，以及位于阵列基板11和彩膜基板12之间的液晶层13。透射式LCD的光线14来自背光模组15。
如图2所示，反射式LCD包括相对设置的阵列基板11和彩膜基板12、位于阵列基板11和彩膜基板12之间的液晶层13、位于阵列基板上的反射层21。反射层21用于反射外界的光线14，反射式LCD的显示光线14来自反射层21反射的外界光线。
半透射半反射式LCD的光线则部分来自背光模组，部分来自外界光线。光线来自背光模组的LCD有较佳的亮度与画质清晰度，但也因此耗电量较大；光线来自外界光线的LCD则能够充分利用周围光线，其耗电量大幅降低，但是亮度与画质较差。
有机发光二极管显示器(Organic Light-Emitting Diode，OLED)被视为是继LCD后未来最具发展潜力的平面显示技术之一，又称为有机电致发光显示器，其发光原理与发光二极管类似，同样是利用材料的特性，不过OLED的材料为有机物质，其结构如图3所示，OLED包括背板31、设置在背板31上的阳极32、设置在阳极32上的发光层33、设置在发光层33上的阴极34，图中箭头方向表示发光层33发出的光的传播方向。OLED具有主动发光、高应答速度等优点。
然而，作为移动产品用显示屏常使用的透射式LCD和OLED在室内画面清晰，但在阳光较强的室外，透射式LCD和OLED会因为外在环境光过亮而不利于人眼的观看和识别。目前通常的解决办法是调高显示屏的亮度以利于观看，但这种解决方式会导致显示器的耗电量增加，并会加速显示器寿命的衰减。
本公开实施例提供了一种显示装置及其驱动方法，用以在环境光较强时降低显示器的耗电量，延长显示器的寿命。
本公开实施例提供了一种显示装置，包括多个子像素单元，每个该子像素单元包括：
反射式液晶显示单元，具有反射显示区域，包括液晶层和反射层；以及
电致发光显示单元，具有发光显示区域，其中，所述发光显示区域与所述反射显示区域重叠；
其中，所述反射层和所述电致发光显示单元分别位于所述液晶层的两侧。
下面结合附图详细介绍本公开实施例提供的阵列基板。
附图中各膜层厚度和区域大小、形状不反应各膜层的真实比例，目的只是示意说明本公开内容。
如图4所示，本公开实施例提供了一种显示装置，包括多个子像素单元，每个子像素单元包括第一显示单元41，以及位于第一显示单元41上的第二显示单元42。
第一显示单元41包括相对设置的阵列基板410和第一基板411、位于阵列基板410和第一基板411之间的液晶分子412、位于第一基板411靠近液晶分子412一侧的透明电极413、位于阵列基板410靠近液晶分子412一侧的反射层电极414；
透明电极413和反射层电极414用于调节液晶分子412的偏转；
第二显示单元42包括位于第一基板411远离液晶分子412一侧的预设区域内的第一电极421、位于第一电极421上的有机发光层422、位于有机发光层422上的第二电极423。
当将本公开实施例中的显示装置放置在室内环境时，由于外界光线较弱，此时显示装置以第二显示单元为主要显示光源，外界光线作为辅助显示光源，外界光线经过反射层电极反射后，再经过不同偏转程度的液晶分子后用于显示；当将本公开实施例中的显示装置放置在室外环境时，由于此时外界光线较强，此时可以以外界光线作为主要显示光源，第二显示单元作为辅助显示光源，外界光线经过反射层电极反射后，再经过不同偏转程度的液晶分子后用于显示，这时能够有效利用外界光线降低显示装置的耗电量，延长显示器的寿命，同时能够转换外界光线较强造成的不利于人眼的观看和识别的问题。
例如，本公开实施例中的第一显示单元为反射式液晶显示单元；第二显示单元为电致发光显示单元，例如，有机电致发光显示单元。
在上述实施例中，反射式液晶显示单元41中的电极层414一方面用作控制液晶层412中的液晶分子偏转的驱动电极，另一方面用作反射层。然而，可以理解的是，在另一实施例中，反射式液晶显示单元41中可以设置有不同于驱动电极的反射层。
例如，本公开实施例中的第一显示单元为边缘场面内转动模式的反射式液晶显示单元；或为扭曲向列型的反射式液晶显示单元；或为垂直配向型的反射式液晶显示单元；或为高级超维场转换模式的反射式液晶显示单元。
本公开实施例中的第二显示单元为双面发射的有机电致发光显示单元；或为顶发射的有机电致发光显示单元；或为底发射的有机电致发光显示单元。
下面结合附图详细介绍本公开实施例中第二显示单元的设置情况。
本公开实施例中的第二显示单元为双面发射的有机电致发光显示单元。
如图5A所示，反射式液晶显示单元41具有反射显示区域R1。在该反射显示区域R1通过反射来自反射式液晶显示单元41外界的光线进行图案显示。
第二显示单元42具有发光显示区域R2。本公开实施例中的第一电极421为透明电极，第二电极423为透明电极。本公开实施例中的第二显示单元可以进行双面发光。第一电极421的材料例如与第二电极423的材料相同。可以选择氧化铟锡(ITO)或氧化铟锌(IZO)的单层膜材料，也可以选择ITO和IZO的复合膜材料。在实际生产过程中，还可以选择其它类型的透明导电材料。本公开实施例并不对第一电极和第二电极的具体材料做限定。
反射式液晶显示单元41的反射显示区域R1与电致发光显示单元42的发光显示区域R2彼此重叠。
在本实施例中，例如，第一基板411例如为玻璃基板。例如，第一基板411的厚度例如大于100微米。
在本实施例中，第二显示单元42的发光显示区域R2完全覆盖反射式液晶显示单元41的反射显示区域R1。
例如，第二显示单元42的发光显示区域R2的大小与反射式液晶显示单元41的反射显示区域R1实质相同。
如图5A所示，本公开实施例中的第一电极421在第一基板411上的正投影区域的面积大小与第一基板411的面积大小相等；或，第二电极423在 第一基板411上的正投影区域的面积大小与第一基板411的面积大小相等。例如，第一电极421和/或第二电极423为不连续、间断的电极，本公开实施例中，第一电极421为连续电极，第一电极421在第一基板411上的正投影区域的面积大小与第一基板411的面积大小相等；或，第二电极423为连续电极，第二电极423在第一基板411上的正投影区域的面积大小与第一基板411的面积大小相等。在实际生产过程中，本公开实施例中第一电极421在第一基板411上的正投影区域的面积大小也可以与第一基板411的面积大小不等，第二电极423在第一基板411上的正投影区域的面积大小也可以与第一基板411的面积大小不等。
如图5A所示，当将该显示装置放置在室内环境时，由于外界环境的光线较弱，此时以有机电致发光显示单元发出的光作为主要显示光源，外界环境的光线作为辅助显示光源。由于是双面发射的有机电致发光显示单元，该有机电致发光显示单元上方的出光可直接用于显示被人眼接收；有机电致发光显示单元下方的出光被反射层电极414反射向上，向上的光线经过不同偏转程度的液晶分子后用于显示；而较弱的外界环境的光线入射透过第一显示单元中的液晶分子412到达反射层电极414，该部分光线同样被反射层电极反射向上，向上的光线经过不同偏转程度的液晶分子后用于显示，这时能够有效利用光源，降低显示装置的耗电量，图5A中的箭头方向表示光线的传播方向。
如图5A所示，当将该显示装置放置在室外环境时，由于此时外界环境的光线较强，此时以有机电致发光显示单元发出的光作为辅助显示光源，外界环境的光线作为主要显示光源。较强的外界环境的光线入射透过第一显示单元中的液晶分子412到达反射层电极414，该部分光线被反射层电极反射向上，向上的光线经过不同偏转程度的液晶分子后作为主要显示光源，而有机电致发光显示单元的光源则作为辅助显示光源配合主要显示光源调节自身器件亮度，这时能够有效利用外界较强的光线，降低显示装置的耗电量；同时能够转换外界环境光过亮不易视认的问题，相较于室内环境更能省电。
在另一示例中，如图5B所示，电致发光显示单元42位于第一基板411与液晶显示层之间。例如，反射式液晶显示单元41的驱动电极413与电致发光显示单元42的第一电极421为同一电极。这样，可以简化装置结构和降低 制造成本。可以理解的是，尽管未示出，在另一示例中，反射式液晶显示单元41的驱动电极413与电致发光显示单元42的第一电极421可以为不同的电极，且两者之间可插设有绝缘层。
再次参见图5A，显示装置还可包括：控制单元C，构造为选择性的控制所述反射式液晶显示单元41和电致发光显示单元42进行显示。控制单元C电连接到所述反射式液晶显示单元41和电致发光显示单元42。
再次参见图5A，显示装置还可包括：环境光检测单元S，构造为获取所述显示装置接收到的环境光的光强数据信号。所述控制单元进一步构造为根据所述光强数据信号选择性的控制所述反射式液晶显示单元和所述电致发光器42部分进行显示。环境光检测单元S电连接到控制单元C。
例如，所述控制单元C进一步构造为在所述光强数据信号小于第一预定值的情况下，控制所述反射式液晶显示单元41和所述电致发光显示单元42同时进行显示，且所述电致发光显示单元42发出的显示光具有第一亮度；并且在所述光强数据信号大于第一预定值的情况下，控制所述电致发光显示单元发出的显示光具有第二亮度，所述第二亮度小于所述第一亮度。所述第一预定值例如小于或等于所述第二预定值。
例如，所述控制单元C进一步构造为在所述光强数据信号大于第一预定值的情况下，控制所述电致发光显示单元42不进行显示，使得所述第二亮度的值实质为零。
这里，所述第一预定值小于或等于所述第二预定值。
可以理解的是，尽管在本公开的其他实施例的图中并未示出所述控制单元C和环境光检测单元S，但是所述控制单元C和环境光检测单元S可以类似地设置在其他实施例提供的显示装置中。
环境光检测单元S例如可以包括光电装换器件。
所述控制单元C可以是一个电路板或多个电路板的组合，用于实现如上所述的功能。在本发明实施例中，该一个电路板或多个电路板的组合可以包括：(1)一个或多个处理器；(2)与处理器相连接的一个或多个非暂时的计算机可读的存储器；以及(3)处理器可执行的存储在存储器中的固件。
例如，如图6所示，本公开实施例中的有机电致发光显示单元还包括设置在第一电极421和有机发光层422之间的空穴传输或注入层61，和/或设 置在有机发光层422和第二电极423之间的电子传输或注入层62。图中仅示出了同时设置空穴传输或注入层61和电子传输或注入层62的情况。不限制空穴传输或注入层和电子传输或注入层的设置方式，这里不再赘述。
进一步地，为了更好的保护有机电致发光显示单元，如图6所示，本公开实施例中的显示装置还包括设置在第二电极423上，用于保护有机电致发光显示单元的封装盖板63。
例如，如图7所示，本公开实施例中的第一基板411靠近液晶分子412一侧设置有彩膜层70；有机电致发光显示单元42构造为能够发出与所述彩膜层70的颜色实质相同的光。例如，所述彩膜层70为红色彩膜层，有机电致发光显示单元构造为能够发出红光。这里，可以理解的是，有机电致发光显示单元构造为能够发出某种颜色的光可以是有机电致发光显示单元的发光层直接发出此种颜色的光，也可以是有机电致发光显示单元的发光层直接发出光经由另一彩膜层滤光进而发出此种颜色的光。这里，并不限制彩膜层70的颜色，例如，还可以为蓝色、黄色、绿色等。
本公开实施例中的第二显示单元为底发射的有机电致发光显示单元。
如图8所示，本公开实施例中的第一电极421为透明电极，第二电极423为非透明电极。例如，第一电极421的材料可以选择ITO或锌IZO的单层膜材料，也可以选择ITO和IZO的复合膜材料。在实际生产过程中，还可以选择其它类型的透明导电材料；第二电极423的材料可以选择金属材料，如选择钼(Mo)、铜(Cu)、铝(Al)等金属中的一种或多种的组合，本公开实施例并不对第一电极和第二电极的具体材料做限定。
在本实施例中，反射式液晶显示单元41的所述反射显示区域R1的至少一部分未被所述电致发光显示单元42的所述发光显示区域R2覆盖。
如图8所示，本公开实施例中的第一电极421在第一基板411上的正投影区域的面积大小小于第一基板411的面积大小，且第二电极423在第一基板411上的正投影区域的面积大小小于第一基板411的面积大小。第一电极421和第二电极423面积的大小根据实际生产需要进行设置。
本公开实施例由于底发射的有机电致发光显示单元非透明缘故，反射式液晶显示单元41的所述反射显示区域R1的至少一部分未被所述电致发光显示单元42的所述发光显示区域R2覆盖使得外界光线可以通过该至少一部分 进入第一显示单元41，进而有效转换外界光线，达到降低耗电量、消除外界环境光过亮而不利于人眼的观看和识别的问题。
如图8所示，当将该显示装置放置在室内环境时，由于外界环境的光线较弱，此时以有机电致发光显示单元发出的光作为主要显示光源，外界环境的光线作为辅助显示光源；当将该显示装置放置在室外环境时，由于此时外界环境的光线较强，此时以有机电致发光显示单元发出的光作为辅助显示光源，外界环境的光线作为主要显示光源；这样，本公开实施例能够有效利用外界较强的光线，降低显示装置的耗电量；同时能够转换外界环境光过亮不利于人眼的观看和识别的问题，相较于室内环境更能省电，图8中的箭头方向表示光线的传播方向。
例如，如图9所示，本公开实施例中的有机电致发光显示单元还包括设置在第一电极421和有机发光层422之间的空穴传输或注入层61，和/或设置在有机发光层422和第二电极423之间的电子传输或注入层62。图中仅示出了同时设置空穴传输或注入层61和电子传输或注入层62的情况。
进一步地，为了更好的保护有机电致发光显示单元，如图9所示，本公开实施例中的显示装置还包括设置在第二电极423上，用于保护有机电致发光显示单元的封装盖板63。
例如，如图10所示，本公开实施例中的第一基板411靠近液晶分子412一侧设置有彩膜层70；有机电致发光显示单元构造为能够发出与所述彩膜层70的颜色实质相同的光。例如，所述彩膜层70为红色彩膜层，有机电致发光显示单元构造为能够发出红光。这里，可以理解的是，有机电致发光显示单元构造为能够发出某种颜色的光可以是有机电致发光显示单元的发光层直接发出此种颜色的光，也可以是有机电致发光显示单元的发光层直接发出光经由另一彩膜层滤光进而发出此种颜色的光。这里，并不限制彩膜层70的颜色，例如，还可以为蓝色、黄色、绿色等。
本公开实施例中的第二显示单元为顶发射的有机电致发光显示单元。
如图11所示，本公开实施例中的第一电极421为非透明电极，第二电极423为透明电极。例如，第二电极423的材料可以选择ITO或锌IZO的单层膜材料，也可以选择ITO和IZO的复合膜材料。在实际生产过程中，还可以选择其它类型的透明导电材料。第一电极421的材料可以选择金属材料，如 选择钼(Mo)、铜(Cu)、铝(Al)等金属中的一种或多种的组合。本公开实施例并不对第一电极和第二电极的具体材料做限定。
如图11所示，本公开实施例中的第一电极421在第一基板411上的正投影区域的面积大小小于第一基板411的面积大小，且第二电极423在第一基板411上的正投影区域的面积大小小于第一基板411的面积大小。本公开实施例中第一电极421和第二电极423面积的大小可根据实际生产需要进行设置。本公开实施例由于顶发射的有机电致发光显示单元非透明缘故，因此有机电致发光显示单元面积大小小于第一显示单元41的面积大小，使得外界光线进入第一显示单元41，进而有效转换外界光线，达到降低耗电量、消除外界环境光过亮而不利于人眼的观看和识别的问题。
如图11所示，当将该显示装置放置在室内环境时，由于外界环境的光线较弱，此时以有机电致发光显示单元发出的光作为主要显示光源，外界环境的光线作为辅助显示光源；当将该显示装置放置在室外环境时，由于此时外界环境的光线较强，此时以有机电致发光显示单元发出的光作为辅助显示光源，外界环境的光线作为主要显示光源；这样，本公开实施例能够有效利用外界较强的光线，降低显示装置的耗电量；同时能够转换外界环境光过亮不利于人眼的观看和识别的问题，相较于室内环境更能省电，图11中的箭头方向表示光线的传播方向。
例如，本公开实施例中的有机电致发光显示单元还包括设置在第一电极421和有机发光层422之间的空穴传输或注入层61，和/或设置在有机发光层422和第二电极423之间的电子传输或注入层62。这里，仅给出了同时设置空穴传输或注入层61和电子传输或注入层62的情况。空穴传输或注入层61和电子传输或注入层62的设置情况可以参照图9所示。
进一步地，为了更好的保护有机电致发光显示单元，本公开实施例中的显示装置还包括设置在第二电极423上，用于保护有机电致发光显示单元的封装盖板63。
例如，本公开实施例中的第一基板411靠近液晶分子412一侧设置有彩膜层70；有机电致发光显示单元构造为能够发出与所述彩膜层70的颜色实质相同的光。例如，所述彩膜层70为红色彩膜层，有机电致发光显示单元构造为能够发出红光，可以参照图10所示。这里，可以理解的是，有机电致发 光显示单元构造为能够发出某种颜色的光可以是有机电致发光显示单元的发光层直接发出此种颜色的光，也可以是有机电致发光显示单元的发光层直接发出光经由另一彩膜层滤光进而发出此种颜色的光。这里，并不限制彩膜层70的颜色，例如，还可以为蓝色、黄色、绿色等。
在本申请的上述实施例的附图中，仅指出了一个子像素的结构示意图。本领域技术人员可以理解，显示装置的其它子像素可以具有类似的结构。
基于同一发明构思，本公开实施例还提供了一种上述显示装置的驱动方法，包括：
在第一环境光照射下，控制所述反射式液晶显示单元和所述电致发光显示单元同时进行显示，且所述电致发光显示单元发出的显示光具有第一亮度；以及
在第二环境光照射下，控制所述电致发光显示单元发出的显示光具有第二亮度，所述第二亮度小于所述第一亮度。
如图12所示，本实施例提供的驱动方法包括：
S1201、在室内环境，控制所述第一显示单元工作，并控制所述第二显示单元工作；
S1202、在室外环境，控制所述第一显示单元工作，并控制所述第二显示单元工作或不工作。
室内环境中照射到所述显示装置上的第一环境光的光强例如小于室外环境中照射到所述显示装置上的第二环境光的光强。
本公开实施例中的显示装置放置在室外环境时，由于室外光线较强，此时可以降低第二显示单元发出的显示光的光强。例如，直接控制第二显示单元不发光，此时，第二显示单元发出的光强实质为零。
例如，本公开实施例中的第二显示单元为有机电致发光显示单元，有机电致发光显示单元采用有源驱动方式或采用无源驱动方式进行工作。
综上所述，本公开实施例提供一种显示装置，包括第一显示单元，以及位于第一显示单元上的第二显示单元；第一显示单元包括相对设置的阵列基板和第一基板、位于阵列基板和第一基板之间的液晶分子、位于第一基板靠近液晶分子一侧的透明电极、位于阵列基板靠近液晶分子一侧的反射层电极；透明电极和反射层电极用于调节液晶分子的偏转；第二显示单元包括位于第 一基板远离液晶分子一侧的预设区域内的第一电极、位于第一电极上的有机发光层、位于有机发光层上的第二电极。当将本公开实施例中的显示装置放置在室内环境时，由于外界光线较弱，此时显示装置以第二显示单元为主要显示光源，外界光线作为辅助显示光源，外界光线经过反射层电极反射后，再经过不同偏转程度的液晶分子后用于显示；当将本公开实施例中的显示装置放置在室外环境时，由于此时外界光线较强，此时可以以外界光线作为主要显示光源，第二显示单元作为辅助显示光源，外界光线经过反射层电极反射后，再经过不同偏转程度的液晶分子后用于显示。这样，能够有效利用外界光线降低显示装置的耗电量，延长显示器的寿命，同时能够转换外界光线较强造成的不利于人眼的观看和识别的问题。
显然，本领域的技术人员可以对本公开进行各种改动和变型而不脱离本公开的精神和范围。这样，倘若本公开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。
以上所述仅是本公开的示范性实施方式，而非用于限制本公开的保护范围，本公开的保护范围由所附的权利要求确定。

Claims (17)

  1. 一种显示装置，包括多个子像素单元，每个该子像素单元包括：
    反射式液晶显示单元，具有反射显示区域，包括液晶层和反射层；以及
    电致发光显示单元，具有发光显示区域，其中，所述发光显示区域与所述反射显示区域重叠；
    其中，所述反射层和所述电致发光显示单元分别位于所述液晶层的两侧。
  2. 根据权利要求1所述的显示装置，其中，
    反射式液晶显示单元还包括：彼此相对的第一基板和第二基板，其中，所述液晶层位于所述第一基板和所述第二基板之间；以及，第一驱动电极和第二驱动电极，构造为控制所述液晶层中的液晶分子的偏转，
    所述电致发光显示单元位于所述第一基板上，包括：第一电极、第二电极以及位于所述第一电极和所述第二电极之间的发光层。
  3. 根据权利要求2所述的显示装置，其中，所述电致发光显示单元的所述发光显示区域完全覆盖反射式液晶显示单元的所述反射显示区域，且所述电致发光显示单元的所述第一电极和所述第二电极均为透明电极。
  4. 根据权利要求3所述的显示装置，其中，反射式液晶显示单元的所述反射显示区域的大小与所述电致发光显示单元的所述发光显示区域的大小实质相同。
  5. 根据权利要求4所述的显示装置，其中，所述电致发光显示单元位于所述第一基板与所述液晶层之间，且所述电致发光显示单元的所述第一电极和所述第二电极之一用作所述反射式液晶显示单元的所述第一驱动电极和所述第二驱动电极之一。
  6. 根据权利要求2至4中任一项所述的显示装置，其中，所述第一基板位于所述电致发光显示单元与所述液晶层之间。
  7. 根据权利要求6所述的显示装置，还包括盖板，位于所述电致发光显示单元的远离所述液晶层的一侧。
  8. 根据权利要求2所述的显示装置，其中，反射式液晶显示单元的所述反射显示区域的至少一部分未被所述电致发光显示单元的所述发光显示区域覆盖，且所述电致发光显示单元的所述第一电极和所述第二电极之一为反射 电极。
  9. 根据权利要求8所述的显示装置，其中，所述反射式液晶显示单元的所述第一驱动电极和所述第二驱动电极之另一为透明电极。
  10. 根据权利要求1至9任一项所述的显示装置，其中，所述反射式液晶显示单元还包括第一滤色器层，所述电致发光显示单元构造为发出第一颜色的光，且所述滤色器层具有所述第一颜色。
  11. 根据权利要求1至10任一项所述的显示装置，还包括：控制单元，构造为选择性的控制所述反射式液晶显示单元和所述电致发光显示单元进行显示。
  12. 根据权利要求11所述的显示装置，还包括：环境光检测单元，构造为获取所述显示装置接收到的环境光的光强数据信号，其中，所述控制单元进一步构造为根据所述光强数据信号选择性的控制所述反射式液晶显示单元和所述电致发光显示单元进行显示。
  13. 根据权利要求12所述的显示装置，其中，所述控制单元进一步构造为在所述光强数据信号小于第一预定值的情况下，控制所述反射式液晶显示单元和所述电致发光显示单元同时进行显示，且所述电致发光显示单元发出的显示光具有第一亮度；并且在所述光强数据信号大于第一预定值的情况下，控制所述电致发光显示单元发出的显示光具有第二亮度，所述第二亮度小于所述第一亮度，其中所述第一预定值小于或等于所述第二预定值。
  14. 根据权利要求13所述的显示装置，其中，所述第二亮度的值实质为零。
  15. 一种如权利要求1至14中任一项所述的显示装置的驱动方法，包括：
    在第一环境光照射下，控制所述反射式液晶显示单元和所述电致发光显示单元同时进行显示，且所述电致发光显示单元发出的显示光具有第一亮度；以及
    在第二环境光照射下，控制所述电致发光显示单元不工作或者发出的显示光具有第二亮度，
    其中，所述第一环境光的光强小于所述第二环境光的光强。
  16. 根据权利要求15所述的驱动方法，其中，所述第二亮度小于所述第一亮度，且所述第二亮度的值实质上不为零。
  17. 根据权利要求14或15所述的驱动方法，其中，所述第一环境光为室内环境光，所述第二环境光为室内环境光。
PCT/CN2017/116461 2017-02-22 2017-12-15 显示装置及其驱动方法 Ceased WO2018153147A1 (zh)

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