WO2021189557A1 - 双面显示器及其制作方法 - Google Patents

双面显示器及其制作方法 Download PDF

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Publication number
WO2021189557A1
WO2021189557A1 PCT/CN2020/084287 CN2020084287W WO2021189557A1 WO 2021189557 A1 WO2021189557 A1 WO 2021189557A1 CN 2020084287 W CN2020084287 W CN 2020084287W WO 2021189557 A1 WO2021189557 A1 WO 2021189557A1
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WIPO (PCT)
Prior art keywords
organic light
double
semi
liquid crystal
sided display
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2020/084287
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English (en)
French (fr)
Inventor
王德祺
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Wuhan China Star Optoelectronics Semiconductor Display Technology Co Ltd
Original Assignee
Wuhan China Star Optoelectronics Semiconductor Display Technology Co Ltd
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Application filed by Wuhan China Star Optoelectronics Semiconductor Display Technology Co Ltd filed Critical Wuhan China Star Optoelectronics Semiconductor Display Technology Co Ltd
Priority to US16/770,016 priority Critical patent/US11532685B2/en
Publication of WO2021189557A1 publication Critical patent/WO2021189557A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • 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
    • G02F1/1343—Electrodes
    • G02F1/13439—Electrodes characterised by their electrical, optical, physical properties; materials therefor; method of making
    • 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
    • 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
    • H10K50/85—Arrangements for extracting light from the devices
    • H10K50/856—Arrangements for extracting light from the devices comprising reflective means
    • 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
    • H10K59/1201—Manufacture or treatment
    • 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
    • H10K59/128—Active-matrix OLED [AMOLED] displays comprising two independent displays, e.g. for emitting information from two major sides of the display

Definitions

  • This application relates to the field of display technology, in particular to a double-sided display and a manufacturing method thereof.
  • OLED Organic Light-Emitting Diode, organic electroluminescent diode
  • LCD Liquid Crystal Display, liquid crystal display
  • the OLED light-emitting device adopts a sandwich structure. When the current is applied to the two ends, electrons and holes are injected into the organic light-emitting layer. Different organic light-emitting materials emit different colors of light under the excitation of excitons, which are used in various display products. .
  • OLED screens are gradually applied to high-end models in the field of mobile phones, and various screens are gradually being developed, such as full screens, water drop screens, and surround screens.
  • various screens are gradually being developed, such as full screens, water drop screens, and surround screens.
  • double-sided screens there are few researches on double-sided screens. Most of the existing double-sided screen patents are made by directly superimposing two display panels. The thickness of the double-sided screen made by this method is large, and the touch is not good, which seriously affects User experience.
  • the present application provides a double-sided display and a manufacturing method thereof, which not only realizes double-sided display, but also greatly reduces the thickness of the screen and improves the tactility.
  • the present application provides a double-sided display, including an array substrate, an organic light-emitting function layer and a semi-transparent semi-reflective electrode disposed on the array substrate in sequence, and a semi-transparent semi-reflective electrode disposed close to the The liquid crystal cell on one side of the organic light-emitting functional layer;
  • a part of the light emitted by the organic light-emitting function layer transmits through the semi-transparent semi-reflective electrode to display on one side of the double-sided display, and the other part is reflected by the semi-transparent semi-reflective electrode toward the liquid crystal cell to Display on the other side of the double-sided display.
  • the organic light-emitting function layer includes a plurality of organic light-emitting units spaced apart from each other; the liquid crystal unit is filled between the plurality of organic light-emitting units.
  • the double-sided display further includes a plurality of spacer units arranged in a one-to-one correspondence with the plurality of organic light emitting units; each of the spacer units surrounds the corresponding organic light emitting unit.
  • the light emitting unit is configured to isolate the organic light emitting unit and the liquid crystal unit.
  • the double-sided display further includes a color filter substrate on a side of the array substrate away from the liquid crystal cell.
  • each of the organic light-emitting units includes any one of a red light-emitting unit, a green light-emitting unit, and a blue light-emitting unit.
  • the array substrate includes a first thin film transistor array and a second thin film transistor array
  • the first thin film transistor array is electrically connected with the plurality of organic light emitting units; the second thin film transistor array is arranged corresponding to the liquid crystal unit.
  • the array substrate further includes a first transparent electrode provided corresponding to the plurality of organic light-emitting units, and a second transparent electrode provided corresponding to the liquid crystal cell;
  • the first thin film transistor array is electrically connected to the organic light emitting unit through the first transparent electrode; the second thin film transistor array is electrically connected to the second transparent electrode;
  • the combination of the first transparent electrode and the semi-transparent and semi-reflective electrode is used to control the light emission of the plurality of organic light-emitting units, and the combination of the second transparent electrode and the semi-transparent and semi-reflective electrode is used to control the The deflection of the liquid crystal molecules in the liquid crystal cell.
  • the material of the first transparent electrode and the second transparent electrode includes indium tin oxide.
  • the double-sided display further includes a conductive layer disposed between the organic light-emitting function layer and the translucent and semi-reflective electrode; the conductive layer includes materials with high refractive index. Rate of organic materials.
  • the double-sided display further includes a color film substrate on the side of the array substrate away from the organic light-emitting function layer; the liquid crystal cell is located on the array substrate and the color film substrate. Between film substrates.
  • the present application also provides a double-sided display, including an array substrate, an organic light-emitting functional layer, a conductive layer, and a semi-transparent semi-reflective electrode sequentially disposed on the array substrate; wherein the material of the conductive layer Including organic materials with high refractive index;
  • the organic light-emitting functional layer includes a plurality of organic light-emitting units spaced apart from each other; the double-sided display further includes liquid crystal cells filled between the plurality of organic light-emitting units;
  • a part of the light emitted by the plurality of organic light-emitting units transmits through the semi-transparent semi-reflective electrode to display on one side of the double-sided display, and the other part is reflected by the semi-transparent semi-reflective electrode toward the liquid crystal cell, To display on the other side of the double-sided display.
  • the double-sided display further includes a plurality of spacer units arranged in a one-to-one correspondence with the plurality of organic light emitting units; each of the spacer units surrounds the corresponding organic light emitting unit.
  • the light emitting unit is configured to isolate the organic light emitting unit and the liquid crystal unit.
  • this application also provides a method for manufacturing a double-sided display, which includes the following steps:
  • a liquid crystal cell is formed on the side of the semi-transparent and semi-reflective electrode close to the organic light-emitting function layer; wherein part of the light emitted by the organic light-emitting function layer passes through the semi-transparent and semi-reflective electrode to display on the double-sided display Is displayed on one side of the display, and the other part is reflected by the semi-transparent semi-reflective electrode toward the liquid crystal cell to display on the other side of the double-sided display.
  • the organic light-emitting functional layer includes a plurality of organic light-emitting units arranged at intervals;
  • Forming the plurality of organic light-emitting units includes the following steps:
  • each of the spacer units has a closed-loop structure
  • An organic light-emitting material is filled in each of the spacer units to form an organic light-emitting unit.
  • the shape of the spacer unit includes any one of a circle, an ellipse, and a rectangle.
  • each of the organic light-emitting units includes any one of a red light-emitting unit, a green light-emitting unit, and a blue light-emitting unit.
  • the forming a liquid crystal cell on the side of the semi-transparent and semi-reflective electrode close to the organic light-emitting function layer includes the following steps:
  • Liquid crystal is filled between the plurality of spacer cells to form a liquid crystal cell.
  • the liquid crystal dropping technique is used to fill the liquid crystal between the plurality of spacer units.
  • the manufacturing method further includes the following steps:
  • a conductive layer is formed between the organic light-emitting function layer and the translucent semi-reflective electrode; wherein the material of the conductive layer includes an organic material with a high refractive index.
  • the manufacturing method further includes the following steps:
  • a color filter substrate is formed on the side of the array substrate away from the liquid crystal cell.
  • the double-sided display provided by the present application integrates organic electroluminescence display technology and liquid crystal display technology in the same display, in which part of the light emitted by the organic light-emitting functional layer passes through the semi-transparent semi-reflective electrode to Display on one side of the double-sided display, and the other part is reflected by the semi-transparent and semi-reflective electrode toward the liquid crystal cell to display on the other side of the double-sided display, thereby realizing double-sided display; and the present application combines the organic light-emitting function layer with The liquid crystal cells are arranged on the same layer, which greatly reduces the thickness of the screen and improves the touch.
  • FIG. 1 is a schematic diagram of a partial cross-sectional structure of a double-sided display provided by an embodiment of the application.
  • FIG. 2 is a top view of the organic light-emitting function layer and the liquid crystal cell in the double-sided display provided in FIG. 1.
  • FIG. 3 is a schematic diagram of a partial cross-sectional structure of an array substrate in the double-sided display provided in FIG. 1.
  • FIG. 4 is a schematic diagram of a partial cross-sectional structure of another double-sided display provided by an embodiment of the application.
  • FIG. 5 is a schematic flowchart of a method for manufacturing a double-sided display according to an embodiment of the application.
  • first and second are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined with “first” and “second” may explicitly or implicitly include one or more of the features. In the description of the present application, “multiple” means two or more than two, unless otherwise specifically defined.
  • connection should be understood in a broad sense, unless otherwise clearly specified and limited.
  • it can be a fixed connection or a detachable connection.
  • Connected or integrally connected it can be mechanically connected, or electrically connected or can communicate with each other; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal communication of two components or the interaction of two components relation.
  • an intermediate medium it can be the internal communication of two components or the interaction of two components relation.
  • the "above” or “below” of the first feature of the second feature may include direct contact between the first and second features, or may include the first and second features Not in direct contact but through other features between them.
  • the "above”, “above” and “above” of the first feature on the second feature include the first feature directly above and obliquely above the second feature, or it simply means that the first feature is higher in level than the second feature.
  • the “below”, “below” and “below” of the second feature of the first feature include the first feature directly below and obliquely below the second feature, or it simply means that the level of the first feature is smaller than the second feature.
  • an embodiment of the present application provides a double-sided display 1.
  • the double-sided display 1 includes an array substrate 4, and an organic light-emitting function layer 5, a conductive layer 6 and a semiconductor layer are sequentially disposed on the array substrate 4.
  • a plurality of organic light-emitting units 8 and a liquid crystal cell 9 are filled between the plurality of organic light-emitting units 8.
  • the organic light-emitting functional layer 5, the conductive layer 6 and the semi-transparent semi-reflective electrode 7 constitute an organic electroluminescence display module 2, and the organic electroluminescence display module 2 and the array substrate 4 are combined to realize an organic electroluminescence display;
  • liquid crystal The unit 9 and the color filter substrate 10 constitute a liquid crystal display module 3, and the liquid crystal display module 3 and the array substrate 4 are combined to realize a liquid crystal display.
  • the semi-transparent semi-reflective electrode 7 serves as the cathode of the organic electroluminescence display module 2, allowing part of the light to pass through and reflecting part of the light.
  • the organic light-emitting function layer 5 is opened by the array substrate 4, it emits light in the direction of the semi-transparent and semi-reflective electrode 7. A part of the light can pass through the semi-transparent and semi-reflective electrode 7 to be on one side of the double-sided display 1 (for example, the first side 17).
  • the first side 17 of the double-sided display 1 is an organic electroluminescence display
  • the second side 18 of the double-sided display 1 is a liquid crystal display
  • the liquid crystal display module 3 does not require an additional backlight module to provide a light source
  • the organic electroluminescence display While the module 2 emits light, it also provides a light source for the liquid crystal display module 3 through the reflection of the semi-transparent semi-reflective electrode 7, which is beneficial to reduce the thickness of the screen.
  • each organic light emitting unit 8 includes a hole injection layer, a hole transport layer, a light emitting layer, an electron transport layer, and an electron injection layer which are sequentially arranged on the array substrate 4; each organic light emitting unit 8 includes a red light emitting unit ( R), any one of the green light emitting unit (G) and the blue light emitting unit (B), wherein the red light emitting unit, the green light emitting unit and the blue light emitting unit respectively emit red light, green light and blue light.
  • R red light emitting unit
  • G green light emitting unit
  • B blue light emitting unit
  • the liquid crystal display module 3 Light source when a plurality of organic light-emitting units 8 emit red, green, and blue light, the part of the red, green, and blue light reflected by the semi-transparent semi-reflective electrode 7 is mixed to form white light, which serves as the liquid crystal display module 3 Light source; when the white light is reflected to the liquid crystal cell 9, the liquid crystal cell 9 converts the white light into polarized light, and the polarized light is emitted through the array substrate 4 and the color film substrate 10 for display; of course, one side of the color film substrate 10 A polarizer corresponding to the liquid crystal cell 9 is provided.
  • the polarizer may be arranged between the color filter substrate 10 and the array substrate 4, or may be provided on the side of the color filter substrate 10 away from the array substrate 4, which is not limited here.
  • the material of the conductive layer 6 includes an organic material with a high refractive index, and the conductive layer 6 with a high refractive index can reduce the waveguide loss in the cavity length of the organic light-emitting function layer 5, and then transmit most of the light to the semi-transparent semi-reflective electrode 7. , Which is beneficial to improve the utilization rate of light.
  • the array substrate 4 includes a first thin film transistor array 11 and a second thin film transistor array 12; wherein, the first thin film transistor array 11 is electrically connected to a plurality of organic light emitting units 8 for controlling a plurality of The organic light-emitting unit 8 works; the second thin film transistor array 12 is arranged corresponding to the liquid crystal cell 9 for controlling the deflection of liquid crystal molecules in the liquid crystal cell 9.
  • the array substrate 4 may also include a first transparent electrode 13 and a second transparent electrode 14.
  • the material of the first transparent electrode 13 and the second transparent electrode 14 includes indium tin oxide (Indium Tin Oxide).
  • the first transparent electrode 13 is the anode of the organic electroluminescence display module 2
  • the first thin film transistor array 11 is electrically connected to the hole injection layer of the organic light emitting unit 8 through the first transparent electrode 13 and passes through
  • a voltage is applied between the first transparent electrode 13 and the semi-transparent semi-reflective electrode 7 to control the organic light-emitting unit 8 to emit light
  • the second transparent electrode 14 and the semi-transparent semi-reflective electrode 7 are respectively located on both sides of the liquid crystal cell 9, and the second thin film
  • the transistor array 12 is electrically connected to the second transparent electrode 14, and the deflection angle of the liquid crystal molecules in the liquid crystal cell 9 is adjusted by changing the voltage between the second transparent electrode 14 and the semi-transparent semi-reflective electrode 7 to control the light transmittance .
  • the organic electroluminescent display module 2 and the liquid crystal display module 3 share the same electrode (translucent and semi-reflective electrode 7); and the organic electroluminescent display module 2 and the liquid crystal display module 3 are controlled by the same array substrate 4, respectively
  • this structure design is conducive to reducing the thickness of the screen.
  • the double-sided display 1 further includes a plurality of spacer units 15 arranged in one-to-one correspondence with the plurality of organic light-emitting units 8.
  • the plurality of spacer units 15 and the organic light-emitting functional layer 5 , The conductive layer 6 and the semi-transparent semi-reflective electrode 7 together constitute the organic electroluminescence display module 2; each spacer unit 15 is arranged around the corresponding organic light-emitting unit 8 for isolating the organic light-emitting unit 8 and the liquid crystal unit 9 to avoid organic
  • the light-emitting unit 8 and the liquid crystal unit 9 are mixed or interfered with each other during the preparation process or the use process.
  • the arrangement of the spacer unit 15 is beneficial to improve the product yield and the production efficiency of the organic light-emitting unit 8 and the liquid crystal unit 9 And device stability.
  • the shape of the spacer unit 15 includes a circle, an ellipse or a rectangle, which is not limited here.
  • organic electroluminescence display technology and liquid crystal display technology are integrated into the same display, and part of the light emitted by the organic light-emitting functional layer 5 of the organic electroluminescence display module 2 passes through the semi-transparent semi-reflective electrode 7 to The first side 17 of the double-sided display 1 displays, and the other part is reflected by the semi-transparent semi-reflective electrode 7 to the liquid crystal cell 9 to provide a light source for the liquid crystal display module 3 to display on the second side 18 of the double-sided display 1, thereby achieving Double-sided display; in addition, the application does not need to add a backlight module for liquid crystal display, and an array substrate 4 is used to control the operation of the organic electroluminescent display module 2 and the liquid crystal display module 3 at the same time, and the organic electroluminescent display module 2 It shares the same electrode with the liquid crystal display module 3.
  • the organic light-emitting function layer 5 of the organic electroluminescence display module 2 and the liquid crystal cell 9 of the liquid crystal display module 3 are arranged on the same layer, which greatly reduces The thickness of the double-sided display 1 improves the sense of touch, thereby improving the user experience.
  • the embodiment of the present application also provides a double-sided display 1'.
  • the difference from the above-mentioned embodiment is that the liquid crystal cell 9'of the liquid crystal display module 3 is arranged between the array substrate 4 and the color filter substrate 10.
  • the color filter substrate 10 is provided with a third transparent electrode 16 on the side close to the liquid crystal cell 9'.
  • the second transparent electrode 14 and the third transparent electrode 16 in the array substrate 4 are respectively located on both sides of the liquid crystal cell 9', the second thin film transistor array 12 is electrically connected to the second transparent electrode 14, and the second transparent electrode The voltage between the electrode 14 and the third transparent electrode 16 adjusts the deflection angle of the liquid crystal molecules in the liquid crystal cell 9'to control the light transmittance.
  • the material of the third transparent electrode 16 may be the same as the material of the second transparent electrode 14; and the second transparent electrode 14 may be disposed close to the liquid crystal cell 9.
  • organic electroluminescence display technology and liquid crystal display technology are integrated into the same display, and part of the light emitted by the organic light-emitting functional layer 5 of the organic electroluminescence display module 2 passes through the semi-transparent semi-reflective electrode 7 to The first side 17 of the double-sided display 1 displays, and the other part is reflected by the semi-transparent semi-reflective electrode 7 to the liquid crystal cell 9 to provide a light source for the liquid crystal display module 3 to display on the second side 18 of the double-sided display 1, thereby achieving Double-sided display;
  • this application does not need to add a backlight module for liquid crystal display, and an array substrate 4 is used to control the operation of the organic electroluminescent display module 2 and the liquid crystal display module 3 at the same time, which reduces the size of the double-sided display 1' Thickness improves the sense of touch, thereby enhancing the user experience.
  • the liquid crystal cell may also be disposed between the organic light-emitting function layer and the semi-transparent semi-reflective electrode.
  • the liquid crystal cell may also be disposed between the organic light-emitting function layer and the array substrate.
  • the color film substrates in all the embodiments provided in this application can also be replaced with glass substrates without color filters.
  • the liquid crystal display module is black and white display; when the liquid crystal cell is close to the organic light emitting function of the array substrate
  • the side of the array substrate away from the organic light-emitting function layer may not be provided with a color filter substrate, and only a polarizer is provided on the side of the array substrate away from the organic light-emitting function layer.
  • the liquid crystal display module is black and white display, and Can further reduce the screen thickness.
  • an embodiment of the present application also provides a method for manufacturing a double-sided display 1, which includes the following steps:
  • Step S501 Provide an array substrate.
  • Step S502 sequentially forming an organic light-emitting functional layer and a semi-transparent semi-reflective electrode on the array substrate.
  • the organic light-emitting functional layer 5 includes a plurality of organic light-emitting units 8 spaced apart from each other; forming a plurality of organic light-emitting units includes the following steps:
  • a plurality of spacer units are formed on the array substrate; each spacer unit has a closed-loop structure;
  • An organic light emitting material is filled in each spacer unit to form an organic light emitting unit.
  • each organic light-emitting unit includes a hole injection layer, a hole transport layer, a light-emitting layer, an electron transport layer, and an electron injection layer sequentially arranged on the array substrate; each organic light-emitting unit includes a red light-emitting unit and a green light-emitting unit Any one of the blue light emitting unit and the red light emitting unit, wherein the red light emitting unit, the green light emitting unit and the blue light emitting unit respectively emit red light, green light and blue light.
  • forming multiple spacer units includes the following steps:
  • the organic photoresist covered with the mask is exposed and developed to form a patterned organic photoresist, that is, a plurality of spacer units are formed.
  • the shape of the spacer unit includes a circle, an ellipse, or a rectangle, which is not limited here.
  • the spacer unit can prevent the organic light-emitting unit and the liquid crystal cell from being mixed during the preparation process. Therefore, the arrangement of the spacer unit is not only beneficial to improve the product yield, but also helps to improve the production efficiency of the organic light-emitting unit and the liquid crystal cell.
  • Step S503 forming a liquid crystal cell on the side of the semi-transparent semi-reflective electrode close to the organic light-emitting function layer; wherein part of the light emitted by the organic light-emitting function layer passes through the semi-transparent semi-reflective electrode to display on one side of the double-sided display, and the other part is The semi-transparent semi-reflective electrode reflects toward the liquid crystal cell to display on the other side of the double-sided display.
  • the semi-transparent semi-reflective electrode allows part of the light to pass through and reflects part of the light.
  • step S503 includes the following steps:
  • Liquid crystal is filled between any two adjacent spacer cells to form a liquid crystal cell.
  • liquid crystal is filled between a plurality of spacer cells to form a liquid crystal cell.
  • ODF One Drop Fill, liquid crystal dropping
  • the organic light-emitting functional layer can be formed first, and then the liquid crystal cell; of course, the liquid crystal unit can also be formed first, and then the organic light-emitting functional layer is formed.
  • the formation of the organic light-emitting functional layer is illustrated as an example, but the order of formation of the organic light-emitting functional layer and the liquid crystal cell is not limited.
  • a conductive layer may be formed first, and then the semi-transparent and semi-reflective electrode is formed on the side of the conductive layer away from the organic light-emitting function layer ;
  • the material of the conductive layer includes an organic material with a high refractive index. The conductive layer with high refractive index can reduce the waveguide loss in the cavity length of the organic light-emitting function layer, and then transfer most of the light to the semi-transparent and semi-reflective electrode, which is beneficial to improve the utilization rate of light.
  • the manufacturing method further includes the following steps:
  • a color filter substrate is formed on the side of the array substrate away from the liquid crystal cell.
  • the double-sided display fabricated in this embodiment is shown in FIG. 1.
  • the double-sided display 1 includes an array substrate 4, an organic light-emitting function layer 5, a conductive layer 6, and a semi-transparent semi-reflective electrode 7 sequentially disposed on the array substrate 4, and
  • the organic light-emitting function layer 5 has a liquid crystal cell 9 arranged in the same layer, and a color filter substrate 10 arranged on the side of the array substrate 4 away from the liquid crystal cell 9; wherein the organic light-emitting function layer 5 includes a plurality of organic light-emitting units 8 arranged at intervals,
  • the liquid crystal cell 9 is filled between the plurality of organic light emitting cells 8.
  • the organic light-emitting functional layer 5, the conductive layer 6, the translucent and semi-reflective electrode 7, and the spacer unit 15 constitute the organic electroluminescence display module 2.
  • the organic electroluminescence display module 2 and the array substrate 4 are combined to realize the organic electroluminescence display module 2.
  • Light-emitting display; the liquid crystal unit 9 and the color film substrate 10 constitute a liquid crystal display module 3, and the liquid crystal display module 3 and the array substrate 4 are combined to realize a liquid crystal display.
  • the organic light-emitting functional layer 5 is turned on by the array substrate 4, it emits light in the direction of the semi-transparent semi-reflective electrode 7.
  • a part of the light can pass through the semi-transparent semi-reflective electrode 7 to be on one side of the double-sided display 1 (for example, the first One side 17) displays, and at the same time, another part of the light is reflected by the semi-transparent semi-reflective electrode 7 back to the liquid crystal cell 9 of the liquid crystal display module 3 to be on the other side of the double-sided display 1 (for example, the second side 18, the first side 17 Set opposite to the second side 18) display, thus realizing double-sided display.
  • the first side 17 of the double-sided display 1 is an organic electroluminescence display
  • the second side 18 of the double-sided display 1 is a liquid crystal display
  • the liquid crystal display module 3 does not require an additional backlight module to provide a light source
  • the organic electroluminescence display While the module 2 emits light, it also provides a light source for the liquid crystal display module 3 through the reflection of the semi-transparent semi-reflective electrode 7, which is beneficial to reduce the thickness of the screen.
  • the liquid crystal display module 3 Light source when a plurality of organic light-emitting units 8 emit red, green, and blue light, the part of the red, green, and blue light reflected by the semi-transparent semi-reflective electrode 7 is mixed to form white light, which serves as the liquid crystal display module 3 Light source; when the white light is reflected to the liquid crystal cell 9, the liquid crystal cell 9 converts the white light into polarized light, and the polarized light is emitted through the array substrate 4 and the color film substrate 10 for display; of course, one side of the color film substrate 10 A polarizer corresponding to the liquid crystal cell 9 is provided.
  • the polarizer may be arranged between the color filter substrate 10 and the array substrate 4, or may be provided on the side of the color filter substrate 10 away from the array substrate 4, which is not limited here.
  • the array substrate 4 includes a first thin film transistor array 11 and a second thin film transistor array 12; wherein, the first thin film transistor array 11 is electrically connected to a plurality of organic light emitting units 8 for A plurality of organic light emitting units 8 are controlled to work; the second thin film transistor array 12 is arranged corresponding to the liquid crystal cell 9 for controlling the deflection of liquid crystal molecules in the liquid crystal cell 9.
  • the array substrate 4 may also include a first transparent electrode 13 and a second transparent electrode 14.
  • the material of the first transparent electrode 13 and the second transparent electrode 14 includes indium tin oxide; wherein, the first transparent electrode 13 is organic electroluminescence.
  • the anode of the display module 2, the first thin-film transistor array 11 is electrically connected to the hole injection layer of the organic light-emitting unit 8 through the first transparent electrode 13, and a voltage is applied between the first transparent electrode 13 and the semi-transparent semi-reflective electrode 7.
  • the second transparent electrode 14 and the semi-transparent semi-reflective electrode 7 are respectively located on both sides of the liquid crystal cell 9, the second thin film transistor array 12 and the second transparent electrode 14 are electrically connected, and by changing the second The voltage between the transparent electrode 14 and the semi-transparent semi-reflective electrode 7 adjusts the deflection angle of the liquid crystal molecules in the liquid crystal cell 9 to control the light transmittance.
  • the organic electroluminescent display module 2 and the liquid crystal display module 3 share the same electrode (translucent and semi-reflective electrode 7); and the organic electroluminescent display module 2 and the liquid crystal display module 3 are controlled by the same array substrate 4, respectively
  • this structure design is conducive to reducing the thickness of the screen.
  • organic electroluminescence display technology and liquid crystal display technology are integrated into the same display, and part of the light emitted by the organic light-emitting functional layer 5 of the organic electroluminescence display module 2 passes through the semi-transparent semi-reflective electrode 7 to The first side 17 of the double-sided display 1 displays, and the other part is reflected by the semi-transparent semi-reflective electrode 7 to the liquid crystal cell 9 to provide a light source for the liquid crystal display module 3 to display on the second side 18 of the double-sided display 1, thereby achieving Double-sided display; in addition, the application does not need to add a backlight module for liquid crystal display, and an array substrate 4 is used to control the operation of the organic electroluminescent display module 2 and the liquid crystal display module 3 at the same time, and the organic electroluminescent display module 2 It shares the same electrode with the liquid crystal display module 3.
  • the organic light-emitting function layer 5 of the organic electroluminescence display module 2 and the liquid crystal cell 9 of the liquid crystal display module 3 are arranged on the same layer, which greatly reduces The thickness of the double-sided display 1 improves the sense of touch, thereby improving the user experience.

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Abstract

一种双面显示器(1)及其制作方法，双面显示器(1)包括依次设置的阵列基板(4)、有机发光功能层(5)和半透明半反射电极(7)，以及设置在半透明半反射电极(7)靠近有机发光功能层(5)一侧的液晶单元(9)；有机发光功能层(5)发出的光一部分透过半透明半反射电极(7)以在双面显示器(1)的一侧显示，另一部分被半透明半反射电极(7)反射向液晶单元(9)以在双面显示器(1)的另一侧显示。

Description

双面显示器及其制作方法 技术领域
本申请涉及显示技术领域，尤其涉及一种双面显示器及其制作方法。
 背景技术
OLED（Organic Light-Emitting Diode，有机电致发光二极管）显示因其具有柔性可弯曲、自发光、广视角等优点成为目前市场上的主流显示产品，被誉为继LCD（Liquid Crystal Display，液晶显示器）显示后最有发展潜力的显示技术。OLED发光器件采用三明治结构，当两端通入电流后，电子和空穴被注入到有机发光层中，不同的有机发光材料在激子激发下发出不同颜色的光，从而应用于各种显示产品。
目前OLED屏幕在手机领域内逐渐应用于高端机型，并且各种屏幕逐渐被开发，例如全面屏、水滴屏、环绕屏。但是目前关于双面屏的研究较少，已有的双面屏专利中大多采用直接叠加两个显示面板的方式制作，采用此种方式制作的双面屏厚度较大，触感不佳，严重影响用户体验感。
 技术问题
本申请提供一种双面显示器及其制作方法，不仅实现双面显示，更极大程度的减小了屏幕厚度，提高了触感。
 技术解决方案
第一方面，本申请提供一种双面显示器，包括阵列基板，依次设置在所述阵列基板上的有机发光功能层和半透明半反射电极，以及设置在所述半透明半反射电极靠近所述有机发光功能层一侧的液晶单元；
所述有机发光功能层发出的光一部分透过所述半透明半反射电极，以在所述双面显示器的一侧显示，另一部分被所述半透明半反射电极反射向所述液晶单元，以在所述双面显示器的另一侧显示。
在本申请所提供的双面显示器中，所述有机发光功能层包括相互间隔设置的多个有机发光单元；所述液晶单元填充在所述多个有机发光单元之间。
在本申请所提供的双面显示器中，所述双面显示器还包括与所述多个所述有机发光单元一一对应设置的多个间隔单元；每个所述间隔单元围绕对应的所述有机发光单元设置，用于隔离所述有机发光单元和所述液晶单元。
在本申请所提供的双面显示器中，所述双面显示器还包括位于所述阵列基板远离所述液晶单元一侧的彩膜基板。
在本申请所提供的双面显示器中，每个所述有机发光单元包括红色发光单元、绿色发光单元和蓝色发光单元中的任意一种。
在本申请所提供的双面显示器中，所述阵列基板包括第一薄膜晶体管阵列和第二薄膜晶体管阵列；
所述第一薄膜晶体管阵列与所述多个有机发光单元电连接；所述第二薄膜晶体管阵列与所述液晶单元对应设置。
在本申请所提供的双面显示器中，所述阵列基板还包括对应所述多个有机发光单元设置的第一透明电极，和对应所述液晶单元设置的第二透明电极；
所述第一薄膜晶体管阵列通过所述第一透明电极与所述有机发光单元电连接；所述第二薄膜晶体管阵列与所述第二透明电极电连接；
所述第一透明电极与所述半透明半反射电极组合，用于控制所述多个有机发光单元发光，且所述第二透明电极与所述半透明半反射电极组合，用于控制所述液晶单元中的液晶分子的偏转。
在本申请所提供的双面显示器中，所述第一透明电极和所述第二透明电极的材料包括氧化铟锡。
在本申请所提供的双面显示器中，所述双面显示器还包括设置在所述有机发光功能层和所述半透明半反射电极之间的导电层；所述导电层的材料包括具有高折射率的有机材料。
在本申请所提供的双面显示器中，所述双面显示器还包括位于所述阵列基板远离所述有机发光功能层一侧的彩膜基板；所述液晶单元位于所述阵列基板和所述彩膜基板之间。
第二方面，本申请还提供了一种双面显示器，包括阵列基板，依次设置在所述阵列基板上的有机发光功能层、导电层和半透明半反射电极；其中，所述导电层的材料包括具有高折射率的有机材料；
所述有机发光功能层包括相互间隔设置的多个有机发光单元；所述双面显示器还包括填充在所述多个有机发光单元之间的液晶单元；
所述多个有机发光单元发出的光一部分透过所述半透明半反射电极，以在所述双面显示器的一侧显示，另一部分被所述半透明半反射电极反射向所述液晶单元，以在所述双面显示器的另一侧显示。
在本申请所提供的双面显示器中，所述双面显示器还包括与所述多个所述有机发光单元一一对应设置的多个间隔单元；每个所述间隔单元围绕对应的所述有机发光单元设置，用于隔离所述有机发光单元和所述液晶单元。
第三方面，本申请还提供了一种双面显示器的制作方法，包括以下步骤：
提供阵列基板；
在所述阵列基板上依次形成有机发光功能层和半透明半反射电极；
在所述半透明半反射电极靠近所述有机发光功能层一侧形成液晶单元；其中，所述有机发光功能层发出的光一部分透过所述半透明半反射电极，以在所述双面显示器的一侧显示，另一部分被所述半透明半反射电极反射向所述液晶单元，以在所述双面显示器的另一侧显示。
在本申请所提供的双面显示器的制作方法中，所述有机发光功能层包括相互间隔设置的多个有机发光单元；
形成所述多个有机发光单元，包括以下步骤：
在所述阵列基板上形成多个间隔单元；每个所述间隔单元为闭环结构；
在每个所述间隔单元中填充有机发光材料以形成有机发光单元。
在本申请所提供的双面显示器的制作方法中，所述间隔单元的形状包括圆形、椭圆形和矩形中的任意一种。
在本申请所提供的双面显示器的制作方法中，每个所述有机发光单元包括红色发光单元、绿色发光单元和蓝色发光单元中的任意一种。
在本申请所提供的双面显示器的制作方法中，所述在所述半透明半反射电极靠近所述有机发光功能层一侧形成液晶单元，包括以下步骤：
在所述多个间隔单元之间填充液晶以形成液晶单元。
在本申请所提供的双面显示器的制作方法中，采用液晶滴注技术在所述多个间隔单元之间填充所述液晶。
在本申请所提供的双面显示器的制作方法中，所述制作方法还包括以下步骤：
在所述有机发光功能层和所述半透明半反射电极之间形成导电层；其中，所述导电层的材料包括具有高折射率的有机材料。
在本申请所提供的双面显示器的制作方法中，所述制作方法还包括以下步骤：
在所述阵列基板远离所述液晶单元的一侧形成彩膜基板。
 有益效果
相较于现有技术，本申请提供的双面显示器，将有机电致发光显示技术和液晶显示技术集成于同一显示器中，其中，有机发光功能层发出的光一部分透过半透明半反射电极，以在双面显示器的一侧显示，另一部分被半透明半反射电极反射向液晶单元，以在双面显示器的另一侧显示，从而实现了双面显示；并且，本申请将有机发光功能层和液晶单元设置在同一层，极大程度的减小了屏幕厚度，提高了触感。
 附图说明
下面结合附图，通过对本申请的具体实施方式详细描述，将使本申请的技术方案及其它有益效果显而易见。
图1为本申请实施例提供的一种双面显示器的部分截面结构示意图。
图2为图1提供的双面显示器中有机发光功能层和液晶单元的俯视图。
图3为图1提供的双面显示器中阵列基板的部分截面结构示意图。
图4为本申请实施例提供的另一种双面显示器的部分截面结构示意图。
图5为本申请实施例提供的一种双面显示器的制作方法的流程示意图。
 本发明的实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述。显然，所描述的实施例仅仅是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
在本申请的描述中，需要理解的是，术语“中心”、“纵向”、“横向”、“长度”、“宽度”、“厚度”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”、“内”、“外”、“顺时针”、“逆时针”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本申请和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本申请的限制。此外，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括一个或者更多个所述特征。在本申请的描述中，“多个”的含义是两个或两个以上，除非另有明确具体的限定。
在本申请的描述中，需要说明的是，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是机械连接，也可以是电连接或可以相互通讯；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通或两个元件的相互作用关系。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本申请中的具体含义。
在本申请中，除非另有明确的规定和限定，第一特征在第二特征之“上”或之“下”可以包括第一和第二特征直接接触，也可以包括第一和第二特征不是直接接触而是通过它们之间的另外的特征接触。而且，第一特征在第二特征“之上”、“上方”和“上面”包括第一特征在第二特征正上方和斜上方，或仅仅表示第一特征水平高度高于第二特征。第一特征在第二特征“之下”、“下方”和“下面”包括第一特征在第二特征正下方和斜下方，或仅仅表示第一特征水平高度小于第二特征。
下文的公开提供了许多不同的实施方式或例子用来实现本申请的不同结构。为了简化本申请的公开，下文中对特定例子的部件和设置进行描述。当然，它们仅仅为示例，并且目的不在于限制本申请。此外，本申请可以在不同例子中重复参考数字和/或参考字母，这种重复是为了简化和清楚的目的，其本身不指示所讨论各种实施方式和/或设置之间的关系。此外，本申请提供了的各种特定的工艺和材料的例子，但是本领域普通技术人员可以意识到其他工艺的应用和/或其他材料的使用。
如图1和图2所示，本申请实施例提供了一种双面显示器1，双面显示器1包括阵列基板4，依次设置在阵列基板4上的有机发光功能层5、导电层6和半透明半反射电极7，与有机发光功能层5同层设置的液晶单元9，以及设置在阵列基板4远离液晶单元9一侧的彩膜基板10；其中，有机发光功能层5包括相互间隔设置的多个有机发光单元8，液晶单元9填充在多个有机发光单元8之间。
具体的，有机发光功能层5、导电层6和半透明半反射电极7构成了有机电致发光显示模块2，有机电致发光显示模块2和阵列基板4结合实现了有机电致发光显示；液晶单元9和彩膜基板10构成了液晶显示模块3，液晶显示模块3和阵列基板4结合实现了液晶显示。
具体的，半透明半反射电极7作为有机电致发光显示模块2的阴极，允许部分光透过，且会对部分光进行反射。有机发光功能层5被阵列基板4开启后，向半透明半反射电极7的方向发射光，一部分光可以透过半透明半反射电极7，以在双面显示器1的一侧（例如第一侧17）显示，同时，另一部分光被半透明半反射电极7反射回液晶显示模块3的液晶单元9，以在双面显示器1的另一侧（例如第二侧18，第一侧17与第二侧18相对设置）显示，从而实现了双面显示。其中，双面显示器1的第一侧17为有机电致发光显示，双面显示器1的第二侧18为液晶显示；且液晶显示模块3不需要额外的背光模块提供光源，有机电致发光显示模块2在发光显示的同时，还通过半透明半反射电极7的反射作用为液晶显示模块3提供光源，有利于减薄屏幕厚度。
具体的，每个有机发光单元8包括依次设置在阵列基板4上的空穴注入层、空穴传输层、发光层、电子传输层、电子注入层；每个有机发光单元8包括红色发光单元（R）、绿色发光单元（G）和蓝色发光单元（B）中的任意一种，其中，红色发光单元、绿色发光单元和蓝色发光单元分别发红光、绿光和蓝光。
具体的，当多个有机发光单元8发红光、绿光和蓝光时，被半透明半反射电极7反射的这部分红光、绿光和蓝光混合形成白光，该白光作为液晶显示模块3的光源；白光被反射至液晶单元9时，液晶单元9将上述白光转为偏振光，该偏振光经阵列基板4和彩膜基板10后射出用于显示画面；当然，彩膜基板10的一侧设有与液晶单元9对应的偏光片，该偏光片可以设置在彩膜基板10和阵列基板4之间，也可以设置在彩膜基板10远离阵列基板4的一侧，此处不做限制。
具体的，导电层6的材料包括具有高折射率的有机材料，高折射率的导电层6可以减少有机发光功能层5腔长中波导损失，进而将大部分光传递到半透明半反射电极7，有利于提高光的利用率。
具体的，如图3所示，阵列基板4包括第一薄膜晶体管阵列11和第二薄膜晶体管阵列12；其中，第一薄膜晶体管阵列11与多个有机发光单元8电连接，用于控制多个有机发光单元8工作；第二薄膜晶体管阵列12与液晶单元9对应设置，用于控制液晶单元9中的液晶分子偏转。当然，阵列基板4还可以包括第一透明电极13和第二透明电极14，第一透明电极13和第二透明电极14的材料包括氧化铟锡（Indium Tin Oxides，ITO）；其中，第一透明电极13为有机电致发光显示模块2的阳极，第一薄膜晶体管阵列11通过第一透明电极13与有机发光单元8的空穴注入层电连接，并通过在第一透明电极13和半透明半反射电极7之间施加电压来控制有机发光单元8发光；而第二透明电极14和半透明半反射电极7分别位于液晶单元9的两侧，第二薄膜晶体管阵列12与第二透明电极14电连接，并通过改变第二透明电极14和半透明半反射电极7之间的电压来调节液晶单元9中的液晶分子的偏转角度，以控制光透过率。
也就是说，有机电致发光显示模块2和液晶显示模块3共用同一个电极（半透明半反射电极7）；且有机电致发光显示模块2和液晶显示模块3受同一阵列基板4控制，分别实现有机电致发光显示和液晶显示，这种结构设计有利于减薄屏幕厚度。
在一实施例中，双面显示器1还包括与多个有机发光单元8一一对应设置的多个间隔单元15，如图1和图2所示，多个间隔单元15与有机发光功能层5、导电层6和半透明半反射电极7一起构成有机电致发光显示模块2；每个间隔单元15围绕对应的有机发光单元8设置，用于隔离有机发光单元8和液晶单元9，可以避免有机发光单元8和液晶单元9在制备过程中或使用过程中发生混合或互相干扰，因此，设置间隔单元15既有利于提高产品良率，也有利于提高有机发光单元8和液晶单元9的制备效率和器件稳定性。具体的，间隔单元15的形状包括圆形、椭圆形或矩形，此处不做限制。
本实施例中，将有机电致发光显示技术和液晶显示技术集成于同一显示器中，且有机电致发光显示模块2的有机发光功能层5发出的光一部分透过半透明半反射电极7，以在双面显示器1的第一侧17显示，另一部分被半透明半反射电极7反射向液晶单元9，为液晶显示模块3提供光源，以在双面显示器1的第二侧18显示，从而实现了双面显示；另外，本申请不需要增加用于液晶显示的背光模组，采用一个阵列基板4同时控制有机电致发光显示模块2和液晶显示模块3工作，并且，有机电致发光显示模块2和液晶显示模块3共用同一个电极，更重要的是，将有机电致发光显示模块2的有机发光功能层5和液晶显示模块3的液晶单元9设置在同一层，极大程度的减小了双面显示器1的厚度，提高了触感，从而提高了用户体验感。
如图4所示，本申请实施例还提供了一种双面显示器1’，与上述实施例不同的在于，液晶显示模块3的液晶单元9’设置在阵列基板4和彩膜基板10之间；且彩膜基板10靠近液晶单元9’的一侧设有第三透明电极16。
具体的，阵列基板4中的第二透明电极14和第三透明电极16分别位于液晶单元9’的两侧，第二薄膜晶体管阵列12与第二透明电极14电连接，并通过改变第二透明电极14和第三透明电极16之间的电压来调节液晶单元9’中的液晶分子的偏转角度，以控制光透过率。
具体的，第三透明电极16的材料可以和第二透明电极14的材料相同；且第二透明电极14可以靠近液晶单元9设置。
本实施例中，将有机电致发光显示技术和液晶显示技术集成于同一显示器中，且有机电致发光显示模块2的有机发光功能层5发出的光一部分透过半透明半反射电极7，以在双面显示器1的第一侧17显示，另一部分被半透明半反射电极7反射向液晶单元9，为液晶显示模块3提供光源，以在双面显示器1的第二侧18显示，从而实现了双面显示；另外，本申请不需要增加用于液晶显示的背光模组，采用一个阵列基板4同时控制有机电致发光显示模块2和液晶显示模块3工作，减小了双面显示器1’的厚度，提高了触感，从而提高了用户体验感。
在一实施例中，液晶单元还可以设置在有机发光功能层和半透明半反射电极之间，当然，液晶单元还可以设置在有机发光功能层和阵列基板之间。
需要说明的是，本申请提供的所有实施例中的彩膜基板还可以替换为无彩色滤光片的玻璃基板，此时液晶显示模组为黑白显示；当液晶单元在阵列基板靠近有机发光功能层的一侧时，阵列基板远离有机发光功能层的一侧可以不设置彩膜基板，仅在阵列基板远离有机发光功能层的一侧设置偏光片，此时液晶显示模组为黑白显示，且能进一步减小屏幕厚度。
如图5所示，本申请实施例还提供了一种双面显示器1的制作方法，包括以下步骤：
步骤S501：提供阵列基板。
步骤S502：在阵列基板上依次形成有机发光功能层和半透明半反射电极。
具体的，如图2所示，有机发光功能层5包括相互间隔设置的多个有机发光单元8；形成多个有机发光单元，包括以下步骤：
在阵列基板上形成多个间隔单元；每个间隔单元为闭环结构；
在每个间隔单元中填充有机发光材料以形成有机发光单元。
具体的，每个有机发光单元包括依次设置在阵列基板上的空穴注入层、空穴传输层、发光层、电子传输层、电子注入层；每个有机发光单元包括红色发光单元、绿色发光单元和蓝色发光单元中的任意一种，其中，红色发光单元、绿色发光单元和蓝色发光单元分别发红光、绿光和蓝光。
具体的，形成多个间隔单元，包括以下步骤：
在阵列基板上涂布一层有机光阻；
在有机光阻上覆盖图案化的掩模版；
对覆盖有掩模版的有机光阻进行曝光显影，形成图案化的有机光阻，即形成多个间隔单元。
具体的，间隔单元的形状包括圆形、椭圆形或矩形，此处不做限制。间隔单元可以避免有机发光单元和液晶单元在制备过程中发生混合，因此，设置间隔单元既有利于提高产品良率，也有利于提高有机发光单元和液晶单元的制备效率。
步骤S503：在半透明半反射电极靠近有机发光功能层一侧形成液晶单元；其中，有机发光功能层发出的光一部分透过半透明半反射电极，以在双面显示器的一侧显示，另一部分被半透明半反射电极反射向液晶单元，以在双面显示器的另一侧显示。
具体的，半透明半反射电极允许部分光透过，且会对部分光进行反射。
具体的，步骤S503包括以下步骤：
在任意相邻的两个间隔单元之间填充液晶以形成液晶单元。
具体的，在多个间隔单元之间填充液晶以形成液晶单元。可以采用ODF（One Drop Fill，液晶滴注）技术填充液晶。需要说明的是，多个间隔单元形成在阵列基板上之后，可以先形成有机发光功能层，再形成液晶单元；当然，也可以先形成液晶单元，在形成有机发光功能层，本实施例以先形成有机发光功能层举例说明，但并不对有机发光功能层和液晶单元的形成先后顺序做限定。
在一实施例中，在有机发光功能层远离阵列基板一侧形成半透明半反射电极之前，可以先形成一层导电层，然后在导电层远离有机发光功能层的一侧形成半透明半反射电极；其中，导电层的材料包括具有高折射率的有机材料。高折射率的导电层可以减少有机发光功能层腔长中波导损失，进而将大部分光传递到半透明半反射电极，有利于提高光的利用率。
在一实施例中，制作方法还包括以下步骤：
在阵列基板远离液晶单元的一侧形成彩膜基板。
本实施例制作得到的双面显示器如图1所示，双面显示器1包括阵列基板4，依次设置在阵列基板4上的有机发光功能层5、导电层6和半透明半反射电极7，与有机发光功能层5同层设置的液晶单元9，以及设置在阵列基板4远离液晶单元9一侧的彩膜基板10；其中，有机发光功能层5包括相互间隔设置的多个有机发光单元8，液晶单元9填充在多个有机发光单元8之间。
具体的，有机发光功能层5、导电层6、半透明半反射电极7以及间隔单元15构成了有机电致发光显示模块2，有机电致发光显示模块2和阵列基板4结合实现了有机电致发光显示；液晶单元9和彩膜基板10构成了液晶显示模块3，液晶显示模块3和阵列基板4结合实现了液晶显示。
具体的，有机发光功能层5被阵列基板4开启后，向半透明半反射电极7的方向发射光，一部分光可以透过半透明半反射电极7，以在双面显示器1的一侧（例如第一侧17）显示，同时，另一部分光被半透明半反射电极7反射回液晶显示模块3的液晶单元9，以在双面显示器1的另一侧（例如第二侧18，第一侧17与第二侧18相对设置）显示，从而实现了双面显示。其中，双面显示器1的第一侧17为有机电致发光显示，双面显示器1的第二侧18为液晶显示；且液晶显示模块3不需要额外的背光模块提供光源，有机电致发光显示模块2在发光显示的同时，还通过半透明半反射电极7的反射作用为液晶显示模块3提供光源，有利于减薄屏幕厚度。
具体的，当多个有机发光单元8发红光、绿光和蓝光时，被半透明半反射电极7反射的这部分红光、绿光和蓝光混合形成白光，该白光作为液晶显示模块3的光源；白光被反射至液晶单元9时，液晶单元9将上述白光转为偏振光，该偏振光经阵列基板4和彩膜基板10后射出用于显示画面；当然，彩膜基板10的一侧设有与液晶单元9对应的偏光片，该偏光片可以设置在彩膜基板10和阵列基板4之间，也可以设置在彩膜基板10远离阵列基板4的一侧，此处不做限制。
在一实施例中，如图3所示，阵列基板4包括第一薄膜晶体管阵列11和第二薄膜晶体管阵列12；其中，第一薄膜晶体管阵列11与多个有机发光单元8电连接，用于控制多个有机发光单元8工作；第二薄膜晶体管阵列12与液晶单元9对应设置，用于控制液晶单元9中的液晶分子偏转。当然，阵列基板4还可以包括第一透明电极13和第二透明电极14，第一透明电极13和第二透明电极14的材料包括氧化铟锡；其中，第一透明电极13为有机电致发光显示模块2的阳极，第一薄膜晶体管阵列11通过第一透明电极13与有机发光单元8的空穴注入层电连接，并通过在第一透明电极13和半透明半反射电极7之间施加电压来控制有机发光单元8发光；而第二透明电极14和半透明半反射电极7分别位于液晶单元9的两侧，第二薄膜晶体管阵列12与第二透明电极14电连接，并通过改变第二透明电极14和半透明半反射电极7之间的电压来调节液晶单元9中的液晶分子的偏转角度，以控制光透过率。
也就是说，有机电致发光显示模块2和液晶显示模块3共用同一个电极（半透明半反射电极7）；且有机电致发光显示模块2和液晶显示模块3受同一阵列基板4控制，分别实现有机电致发光显示和液晶显示，这种结构设计有利于减薄屏幕厚度。
本实施例中，将有机电致发光显示技术和液晶显示技术集成于同一显示器中，且有机电致发光显示模块2的有机发光功能层5发出的光一部分透过半透明半反射电极7，以在双面显示器1的第一侧17显示，另一部分被半透明半反射电极7反射向液晶单元9，为液晶显示模块3提供光源，以在双面显示器1的第二侧18显示，从而实现了双面显示；另外，本申请不需要增加用于液晶显示的背光模组，采用一个阵列基板4同时控制有机电致发光显示模块2和液晶显示模块3工作，并且，有机电致发光显示模块2和液晶显示模块3共用同一个电极，更重要的是，将有机电致发光显示模块2的有机发光功能层5和液晶显示模块3的液晶单元9设置在同一层，极大程度的减小了双面显示器1的厚度，提高了触感，从而提高了用户体验感。
在上述实施例中，对各个实施例的描述都各有侧重，某个实施例中没有详述的部分，可以参见其他实施例的相关描述。
以上对本申请实施例所提供的一种双面显示器及其制作方法进行了详细介绍，本文中应用了具体个例对本申请的原理及实施方式进行了阐述，以上实施例的说明只是用于帮助理解本申请的技术方案及其核心思想；本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本申请各实施例的技术方案的范围。

Claims (20)

  1. 一种双面显示器，包括阵列基板，依次设置在所述阵列基板上的有机发光功能层和半透明半反射电极，以及设置在所述半透明半反射电极靠近所述有机发光功能层一侧的液晶单元；
    所述有机发光功能层发出的光一部分透过所述半透明半反射电极，以在所述双面显示器的一侧显示，另一部分被所述半透明半反射电极反射向所述液晶单元，以在所述双面显示器的另一侧显示。
  2. 如权利要求1所述的双面显示器，其中，所述有机发光功能层包括相互间隔设置的多个有机发光单元；所述液晶单元填充在所述多个有机发光单元之间。
  3. 如权利要求2所述的双面显示器，其中，所述双面显示器还包括与所述多个所述有机发光单元一一对应设置的多个间隔单元；每个所述间隔单元围绕对应的所述有机发光单元设置，用于隔离所述有机发光单元和所述液晶单元。
  4. 如权利要求2所述的双面显示器，其中，所述双面显示器还包括位于所述阵列基板远离所述液晶单元一侧的彩膜基板。
  5. 如权利要求2所述的双面显示器，其中，每个所述有机发光单元包括红色发光单元、绿色发光单元和蓝色发光单元中的任意一种。
  6. 如权利要求2所述的双面显示器，其中，所述阵列基板包括第一薄膜晶体管阵列和第二薄膜晶体管阵列；
    所述第一薄膜晶体管阵列与所述多个有机发光单元电连接；所述第二薄膜晶体管阵列与所述液晶单元对应设置。
  7. 如权利要求6所述的双面显示器，其中，所述阵列基板还包括对应所述多个有机发光单元设置的第一透明电极，和对应所述液晶单元设置的第二透明电极；
    所述第一薄膜晶体管阵列通过所述第一透明电极与所述有机发光单元电连接；所述第二薄膜晶体管阵列与所述第二透明电极电连接；
    所述第一透明电极与所述半透明半反射电极组合，用于控制所述多个有机发光单元发光，且所述第二透明电极与所述半透明半反射电极组合，用于控制所述液晶单元中的液晶分子的偏转。
  8. 如权利要求7所述的双面显示器，其中，所述第一透明电极和所述第二透明电极的材料包括氧化铟锡。
  9. 如权利要求1所述的双面显示器，其中，所述双面显示器还包括设置在所述有机发光功能层和所述半透明半反射电极之间的导电层；所述导电层的材料包括具有高折射率的有机材料。
  10. 如权利要求1所述的双面显示器，其中，所述双面显示器还包括位于所述阵列基板远离所述有机发光功能层一侧的彩膜基板；所述液晶单元位于所述阵列基板和所述彩膜基板之间。
  11. 一种双面显示器，包括阵列基板，依次设置在所述阵列基板上的有机发光功能层、导电层和半透明半反射电极；其中，所述导电层的材料包括具有高折射率的有机材料；
    所述有机发光功能层包括相互间隔设置的多个有机发光单元；所述双面显示器还包括填充在所述多个有机发光单元之间的液晶单元；
    所述多个有机发光单元发出的光一部分透过所述半透明半反射电极，以在所述双面显示器的一侧显示，另一部分被所述半透明半反射电极反射向所述液晶单元，以在所述双面显示器的另一侧显示。
  12. 如权利要求11所述的双面显示器，其中，所述双面显示器还包括与所述多个所述有机发光单元一一对应设置的多个间隔单元；每个所述间隔单元围绕对应的所述有机发光单元设置，用于隔离所述有机发光单元和所述液晶单元。
  13. 一种双面显示器的制作方法，包括以下步骤：
    提供阵列基板；
    在所述阵列基板上依次形成有机发光功能层和半透明半反射电极；
    在所述半透明半反射电极靠近所述有机发光功能层一侧形成液晶单元；其中，所述有机发光功能层发出的光一部分透过所述半透明半反射电极，以在所述双面显示器的一侧显示，另一部分被所述半透明半反射电极反射向所述液晶单元，以在所述双面显示器的另一侧显示。
  14. 如权利要求13所述的双面显示器的制作方法，其中，所述有机发光功能层包括相互间隔设置的多个有机发光单元；
    形成所述多个有机发光单元，包括以下步骤：
    在所述阵列基板上形成多个间隔单元；每个所述间隔单元为闭环结构；
    在每个所述间隔单元中填充有机发光材料以形成有机发光单元。
  15. 如权利要求14所述的双面显示器的制作方法，其中，所述间隔单元的形状包括圆形、椭圆形和矩形中的任意一种。
  16. 如权利要求14所述的双面显示器的制作方法，其中，每个所述有机发光单元包括红色发光单元、绿色发光单元和蓝色发光单元中的任意一种。
  17. 如权利要求14所述的双面显示器的制作方法，其中，所述在所述半透明半反射电极靠近所述有机发光功能层一侧形成液晶单元，包括以下步骤：
    在所述多个间隔单元之间填充液晶以形成液晶单元。
  18. 如权利要求17所述的双面显示器的制作方法，其中，采用液晶滴注技术在所述多个间隔单元之间填充所述液晶。
  19. 如权利要求13所述的双面显示器的制作方法，其中，所述制作方法还包括以下步骤：
    在所述有机发光功能层和所述半透明半反射电极之间形成导电层；其中，所述导电层的材料包括具有高折射率的有机材料。
  20. 如权利要求13所述的双面显示器的制作方法，其中，所述制作方法还包括以下步骤：
    在所述阵列基板远离所述液晶单元的一侧形成彩膜基板。
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CN113741096B (zh) * 2021-08-31 2022-03-22 惠科股份有限公司 双面显示面板
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