WO2014071622A1 - 一种双面显示装置及其控制方法 - Google Patents

一种双面显示装置及其控制方法 Download PDF

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Publication number
WO2014071622A1
WO2014071622A1 PCT/CN2012/084418 CN2012084418W WO2014071622A1 WO 2014071622 A1 WO2014071622 A1 WO 2014071622A1 CN 2012084418 W CN2012084418 W CN 2012084418W WO 2014071622 A1 WO2014071622 A1 WO 2014071622A1
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Prior art keywords
transistor
pixel unit
display device
double
sided display
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Ceased
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PCT/CN2012/084418
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English (en)
French (fr)
Inventor
刘自鸿
余晓军
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Shenzhen Royole Technologies Co Ltd
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Shenzhen Royole Technologies Co Ltd
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Application filed by Shenzhen Royole Technologies Co Ltd filed Critical Shenzhen Royole Technologies Co Ltd
Priority to PCT/CN2012/084418 priority Critical patent/WO2014071622A1/zh
Priority to CN201280001477.0A priority patent/CN103988246B/zh
Publication of WO2014071622A1 publication Critical patent/WO2014071622A1/zh
Priority to US14/697,277 priority patent/US9620575B2/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/10—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
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/001—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes using specific devices not provided for in groups G09G3/02 - G09G3/36, e.g. using an intermediate record carrier such as a film slide; Projection systems; Display of non-alphanumerical information, solely or in combination with alphanumerical information, e.g. digital display on projected diapositive as background
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
    • G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
    • G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
    • G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
    • G09G3/3225—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix
    • G09G3/3258—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix with pixel circuitry controlling the voltage across the light-emitting element
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/3433—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using light modulating elements actuated by an electric field and being other than liquid crystal devices and electrochromic devices
    • G09G3/344—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using light modulating elements actuated by an electric field and being other than liquid crystal devices and electrochromic devices based on particles moving in a fluid or in a gas, e.g. electrophoretic devices
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/10—OLED displays
    • H10K59/12—Active-matrix OLED [AMOLED] displays
    • H10K59/121—Active-matrix OLED [AMOLED] displays characterised by the geometry or disposition of pixel elements
    • H10K59/1213—Active-matrix OLED [AMOLED] displays characterised by the geometry or disposition of pixel elements the pixel elements being TFTs
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/10—OLED displays
    • H10K59/12—Active-matrix OLED [AMOLED] displays
    • H10K59/121—Active-matrix OLED [AMOLED] displays characterised by the geometry or disposition of pixel elements
    • H10K59/1216—Active-matrix OLED [AMOLED] displays characterised by the geometry or disposition of pixel elements the pixel elements being capacitors
    • 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
    • H10K59/17—Passive-matrix OLED displays
    • H10K59/179—Interconnections, e.g. wiring lines or terminals
    • 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
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2300/00—Aspects of the constitution of display devices
    • G09G2300/02—Composition of display devices
    • G09G2300/023—Display panel composed of stacked panels
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2300/00—Aspects of the constitution of display devices
    • G09G2300/04—Structural and physical details of display devices
    • G09G2300/0439—Pixel structures
    • G09G2300/0465—Improved aperture ratio, e.g. by size reduction of the pixel circuit, e.g. for improving the pixel density or the maximum displayable luminance or brightness
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2300/00—Aspects of the constitution of display devices
    • G09G2300/08—Active matrix structure, i.e. with use of active elements, inclusive of non-linear two terminal elements, in the pixels together with light emitting or modulating elements
    • G09G2300/0809—Several active elements per pixel in active matrix panels
    • G09G2300/0814—Several active elements per pixel in active matrix panels used for selection purposes, e.g. logical AND for partial update
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2360/00—Aspects of the architecture of display systems
    • G09G2360/04—Display device controller operating with a plurality of display units
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
    • G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
    • G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
    • G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
    • G09G3/3225—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix
    • G09G3/3233—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix with pixel circuitry controlling the current through the light-emitting element

Definitions

  • the invention belongs to the technical field of display, and in particular relates to a double-sided display device and a control method thereof.
  • An object of the present invention is to provide a double-sided display device, which aims to solve the problem that the existing double-sided display device has many lines and complicated structure.
  • a double-sided display device has a plurality of pixel units on both the front and the back sides, and the front pixel unit and the back pixel unit are in one-to-one correspondence, and the pixel units on the front and back sides are all connected by the same circuit.
  • the circuit includes a transistor T1; a first input end of the transistor T1 is connected to the first scan line, and a second input end is connected to the second scan line; and the positive and negative sides correspond to the pixel unit and the transistor T1
  • the output is electrically connected.
  • the first scan line and the second scan line are respectively connected to the first input end and the second input end of the transistor T1, and the corresponding pixel units on both the front and the back sides are connected to the output end of the transistor T1, so that only Double-sided display control can be realized by using the existing single-sided thin film transistor back plate, the circuit is small, the structure is simple, the pixel aperture ratio is high, and the cost of the double-sided display device is greatly reduced.
  • FIG. 1 is a schematic structural diagram of a pixel unit corresponding to both sides of a double-sided display device according to an embodiment of the present invention (the front pixel unit is an active light-emitting display unit);
  • FIG. 2 is another schematic structural diagram of a pixel unit corresponding to the front and back sides of a double-sided display device according to an embodiment of the present invention (the front pixel unit is a passive light emitting display unit);
  • FIG. 3 is an equivalent circuit diagram of a display module of a double-sided display device according to Embodiment 1 of the present invention (both positive and negative surfaces are active light-emitting display units);
  • FIG. 4 is an equivalent circuit diagram of a display module of a double-sided display device according to Embodiment 1 of the present invention (both positive and negative sides are passive light-emitting display units);
  • FIG. 5 is an equivalent circuit diagram of a display module of a double-sided display device according to Embodiment 1 of the present invention (the front side is an active light-emitting display unit, and the reverse side is a passive light-emitting display unit);
  • FIG. 6 is an equivalent circuit diagram of a display module of a double-sided display device according to Embodiment 2 of the present invention (both front and back sides are active light-emitting display units);
  • FIG. 7 is an equivalent circuit diagram of a display module of a double-sided display device according to Embodiment 2 of the present invention (both positive and negative sides are passive light-emitting display units);
  • FIG. 8 is an equivalent circuit diagram of a display module of a double-sided display device according to Embodiment 3 of the present invention (the front side is an active light emitting display unit, and the reverse side is a passive light emitting display unit);
  • FIG. 9 is an equivalent circuit diagram of a display module of a double-sided display device according to Embodiment 4 of the present invention (both positive and negative sides are active light-emitting display units);
  • FIG. 10 is an equivalent circuit diagram of a display module of a double-sided display device according to Embodiment 4 of the present invention (both positive and negative sides are passive light-emitting display units);
  • FIG. 11 is an equivalent circuit diagram of a display module of a double-sided display device according to Embodiment 4 of the present invention (the front side is an active light-emitting display unit, and the reverse side is a passive light-emitting display unit);
  • FIG. 12 is an equivalent circuit diagram of a display module of a double-sided display device according to Embodiment 5 of the present invention (the front side is an active light-emitting display unit, and the reverse side is a passive light-emitting display unit);
  • FIG. 13 is an equivalent circuit diagram of a display module of a double-sided display device according to Embodiment 5 of the present invention (the front side is an active light-emitting display unit, and the reverse side is a passive light-emitting display unit).
  • the first scan line and the second scan line are respectively connected to the first input end and the second input end of the transistor T1, and the corresponding pixel units on both the front and the back sides are connected to the output end of the transistor T1, so that only Double-sided display control can be realized by using the existing single-sided thin film transistor back plate, the wiring is small, the structure is simple, and the cost of the double-sided display device is greatly reduced.
  • the double-sided display device provided by the embodiment of the present invention has a plurality of pixel units on both the front and the back, and the front pixel unit and the reverse pixel unit are in one-to-one correspondence.
  • a description will be made here with a corresponding front pixel unit 1 and reverse side pixel unit 2.
  • the positive and negative corresponding pixel units 1 and 2 are all controlled by the same circuit 31.
  • the circuit 31 includes a transistor T1, and the front and back surfaces of the corresponding pixel unit 1, 2 and the circuit 31 form a display mode. group.
  • the transistor T1 may be an N-type thin film transistor or a P-type thin film transistor, and an N-type thin film transistor is used here.
  • the first input end of the transistor T1 is connected to the first scan line 11.
  • the first scan line 11 is a row scan line; the second input end is connected to the second scan line 12, which is used in this embodiment.
  • the second scan line 12 is a column scan line.
  • the front and back corresponding pixel units 1 and 2 are electrically connected to the output end of the transistor T1.
  • the number of rows and columns of scanning lines in the double-sided display device is the same as that of the conventional single-sided display device.
  • the double-sided display device has fewer lines, which is not only relatively easy to design and manufacture, but also greatly reduced.
  • the cost of the double-sided display device is increased, and the pixel aperture ratio is improved, and the luminous efficiency is improved.
  • the structure is simple.
  • the circuit 31 is disposed on the thin film transistor backplane 3 having the via hole 30, and the output end of the transistor T1 is led to the reverse pixel unit 2 via the via hole 30.
  • the via hole 30 is provided with a dielectric electrically connected to the output end of the transistor T1, and the dielectric is electrically connected to the reverse pixel unit 2.
  • the front pixel unit 1 and the reverse pixel unit 2 are connected in parallel to the output end of the transistor T1, and both are turned on or off at the same time, and the same image is displayed at the same time, and is mainly used for double-sided display advertisement.
  • the front pixel unit 1 may be an active light emitting display unit or a passive light emitting display unit
  • the back surface pixel unit 2 may be an active light emitting display unit or a passive light emitting display unit
  • both the active light emitting display unit and the passive light emitting display unit are Contains storage capacitors.
  • the organic light-emitting diode OLED used as an active light-emitting display device and the electronic ink E-INK used as a passive light-emitting display device will be described as an example.
  • the active light emitting display unit on the front and back sides of the double-sided display device shown in FIG. 3 further includes an OLED 1 and a transistor T4 serving as an active light emitting display device; the transistor T4
  • the control terminal is electrically connected to the output of the transistor T1, and the input terminal and the OLED1
  • the cathode is electrically connected and the output is grounded.
  • the control terminal and the output end of the transistor T4 have a storage capacitor C1 indirectly, and the anode of the OLED 1 is connected to the power line 13.
  • the power source SEL_VDD input from the power line 13 can be automatically converted to 0 or VDD under the control of the peripheral driving control chip according to the operating state of each side of the double-sided display device.
  • the active light emitting display unit located on the reverse side of the double-sided display device further includes an OLED 2 and a transistor T5 serving as an active light emitting display device; the control end of the transistor T5 is electrically connected to the output end of the transistor T1, and the input end and the OLED 2 The cathode is electrically connected and the output is grounded.
  • the control terminal and the output end of the transistor T5 have a storage capacitor C2 indirectly, and the anode of the OLED 2 is connected to the same power line 13.
  • the double-sided display device shown in FIG. 4 adopts a passive light-emitting display unit on both the front and the back, and the passive light-emitting display unit on the front side of the double-sided display device further includes an E-INK1 serving as a passive light-emitting display device, the E-INK1 It is disposed between the two plates of the storage capacitor C1. Wherein, one plate of the storage capacitor C1 is electrically connected to the output end of the transistor T1, and the other plate is grounded.
  • the passive light emitting display unit located on the reverse side of the double-sided display device further includes an E-INK2 serving as a passive light emitting display device, and the E-INK2 is disposed between the two plates of the storage capacitor C2. Wherein, one plate of the storage capacitor C2 is electrically connected to the output end of the transistor T1, and the other plate is grounded.
  • the double-sided display device shown in FIG. 5 adopts an active light-emitting display unit on the front side and a passive light-emitting display unit on the reverse side.
  • the active light emitting display unit located on the front side of the double-sided display device further includes an OLED 1 and a transistor T4 serving as an active light emitting display device; the control end of the transistor T4 is electrically connected to the output end of the transistor T1, and the input terminal and the OLED 1 The cathode is electrically connected and the output is grounded.
  • the control terminal and the output end of the transistor T4 have a storage capacitor C1 indirectly, and the anode of the OLED 1 is connected to the power line 13.
  • the passive light emitting display unit located on the reverse side of the double-sided display device further includes an E-INK2 serving as a passive light emitting display device, and the E-INK2 is disposed between the two plates of the storage capacitor C2. Wherein, one plate of the storage capacitor C2 is electrically connected to the output end of the transistor T1, and the other plate is grounded.
  • the front side of the double-sided display device adopts a passive light-emitting display unit, and the reverse side adopts an active light-emitting display unit, the composition and effect thereof are the same as above, and details are not described herein again.
  • This is compatible with active illuminating displays (such as OLEDs) and passive illuminating displays (such as E-INK).
  • active illuminating displays such as OLEDs
  • passive illuminating displays such as E-INK
  • the display can be realized in any light environment through the optimal power-saving mode: using a passively illuminated display surface in sunlight, such as electronic ink E-INK; and using an active light-emitting display surface at night or in the dark, such as Organic light emitting diode OLED.
  • the gate G1 of the transistor T1 in the present embodiment is used as the first input terminal, the source S1 is used as the second input terminal, and the drain D1 is used as the output terminal.
  • the gate G4 of the transistor T4 serves as a control terminal, the source S4 serves as an input terminal, and the drain D4 serves as an output terminal.
  • the gate G5 of the transistor T5 serves as a control terminal, the source S5 serves as an input terminal, and the drain D5 serves as an output terminal.
  • a transistor T2 for gating the front pixel unit 1 is disposed between the output end of the transistor T1 and the front pixel unit 1 in the embodiment; the input terminal and the transistor of the transistor T2 The output end of T1 is electrically connected, the output end is electrically connected to the front pixel unit 1, and the control end is connected to the control line 14, as shown in FIGS.
  • the control terminals of the transistors T2 in the double-sided display device are connected to the same control line 14 to perform gate control on all the front pixel units 1, so that only one control line 14 is added.
  • the wiring is small and the layout is simple.
  • the gate G2 of the transistor T2 serves as a control terminal
  • the source S2 serves as an input terminal
  • the drain D2 serves as an output terminal.
  • the transistor T3 that gates the reverse pixel unit 2 is disposed between the output end of the transistor T1 and the reverse pixel unit 2; the input end of the transistor T3 The output terminal is electrically connected to the output terminal of the transistor T1, the output terminal is electrically connected to the reverse pixel unit 2, and the control terminal is connected to the control line 14, as shown in FIG.
  • the control terminals of the transistors T3 in the double-sided display device are connected to the same control line 14 to perform gate control on all the reverse pixel units 2, so that only one control line 14 is added.
  • the wiring is small and the layout is simple.
  • the gate G3 of the transistor T3 serves as a control terminal
  • the source S3 serves as an input terminal
  • the drain D3 serves as an output terminal.
  • a transistor T2 for gating the front pixel unit 1 is disposed between the output end of the transistor T1 and the front pixel unit 1 in the embodiment, and the output end of the transistor T1 is A transistor T3 that gates the reverse pixel unit 2 is provided between the opposite pixel units 2.
  • the input end of the transistor T2 is electrically connected to the output end of the transistor T1, the output end is electrically connected to the front pixel unit 1, and the control end is connected to the control line 14; the input end of the transistor T3 and the output end of the transistor T1 Electrically connected, the output end is electrically connected to the reverse pixel unit 2, and the control end is connected to the control line 14, as shown in FIGS.
  • the control terminals of the transistors T2 and T3 of the double-sided display device are connected to the same control line 14 to perform gate control on all the front pixel units 1 and the reverse pixel unit 2, so that the double-sided display is performed.
  • the same image is displayed simultaneously on both the front and back sides of the device, so that only one control line 14 is added.
  • the wiring is small and the layout is simple.
  • the control terminal of the transistor T2 and the control terminal of the transistor T3 are first connected to the inverter INV, and then connected to the same control line 14.
  • the control terminal of the transistor T2 is connected to the inverter INV; the input end of the inverter INV and the control terminal of the transistor T3 are connected to the same control line 14, and the output terminal is electrically connected to the control terminal of the transistor T2. , as shown in Figure 12.
  • control terminal of the transistor T3 is connected to the inverter INV; the input end of the inverter INV and the control terminal of the transistor T2 are connected to the same control line 14, and the output terminal is electrically connected to the control terminal of the transistor T3. Connect as shown in Figure 13.
  • the transistor T2 is gated, the transistor T3 is turned off, and the front pixel unit 1 is controlled by the first scan signal input through the transistor T1, that is, the front surface of the double-sided display device displays the image formed by the control of the first scan signal.
  • the first scan signal simultaneously charges the storage capacitor C1 of the front pixel unit 1 until the voltage of the storage capacitor C1 of the front pixel unit 1 reaches the voltage displayed by the front pixel unit 1.
  • the transistor T2 is turned off, the transistor T3 is gated, and the reverse pixel unit 2 is controlled by the second scan signal input through the transistor T1, that is, the image formed by the second scan signal is displayed on the reverse side of the double-sided display device.
  • the second scan signal simultaneously charges the storage capacitor C2 of the reverse pixel unit 2 until the voltage of the storage capacitor C2 of the reverse pixel unit 2 reaches the voltage displayed by the reverse pixel unit 2. Due to the storage capacitor, when the double-sided display device is displayed on the reverse side, the original image will be maintained on the front side until the transistor T2 is strobed in the next cycle. Similarly, when the double-sided display device is displayed on the front side, the original image will be maintained on the reverse side until the transistor T3 is strobed in the next cycle.
  • the first scan signal is input from the first scan line 11 and the second scan line 12, and then transmitted to the front pixel unit 1 via the transistor T1 and the transistor T2.
  • the second scan signal is input from the first scan line 11 and the second scan line 12, and then transmitted to the reverse pixel unit 2 via the transistor T1 and the transistor T3.
  • the first scan signal and the second scan signal are different image signals and are alternately transmitted to the front pixel unit 1 and the back pixel unit 2 in a time-sharing manner.
  • the double-sided display device can display one image on the front side and then display another image on the reverse side, and then cycle until the front and back sides simultaneously display different images continuously changing; or can display an image first on the front side.
  • Rows (columns), then the rows (columns) of the other image are displayed on the reverse side, and alternately until the front and back sides respectively display a complete image, and then cycle through until the front and back sides simultaneously show continuous changes.
  • Different images the front and back sides of the double-sided display device can display different images at the same time, which is especially suitable for outdoor advertising display.
  • the front and back sides of the double-sided display device can simultaneously display the same image.

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Abstract

一种双面显示装置及其控制方法，其中双面显示装置正、反两面均具有多个像素单元，正面像素单元（1）与反面像素单元（2）一一对应、且由同一电路（31）所控制，电路（31）包括晶体管（T1）；晶体管（T1）的第一输入端接入第一扫描线（11），第二输入端接入第二扫描线（12）；正面像素单元（1）与反面像素单元（2）均与晶体管（T1）的输出端电连接，由此实现只需采用现有单面薄膜晶体管背板（3）即可实现双面显示控制，结构简单，像素开口率高，大幅降低成本。

Description

一种双面显示装置及其控制方法 技术领域
本发明属于显示技术领域，尤其涉及一种双面显示装置及其控制方法。
 背景技术
随着科技发展，现已出现双面显示器。文献号为US 2008/0122735 A1公开了一种双面显示装置，其将两面发光的各个独立像素单元都统一放到同一玻璃基板上，因而等同于面板上的TFT数目翻倍，同时需要传统单面显示器双倍的数据扫描引线，以及双倍数目的数据扫描驱动IC，线路多，结构复杂，成本高，显示像素的开口率低。
 技术问题
本发明实施例的目的在于提供一种双面显示装置，旨在解决现有双面显示装置线路多，结构复杂的问题。
 技术解决方案
本发明实施例是这样实现的，一种双面显示装置，正、反两面均具有多个像素单元，正面像素单元与反面像素单元一一对应，正、反两面对应像素单元均由同一电路所控制，所述电路包括晶体管T1；所述晶体管T1的第一输入端接入第一扫描线，第二输入端接入第二扫描线；所述正、反两面对应像素单元均与晶体管T1的输出端电连接。
 有益效果
本发明实施例将第一扫描线和第二扫描线分别接入晶体管T1的第一输入端和第二输入端，并使正、反两面对应像素单元均与晶体管T1的输出端相连，如此只需采用现有单面薄膜晶体管背板即可实现双面显示控制，线路少，结构简单，像素开口率高，极大地降低了双面显示装置的成本。
 附图说明
图1是本发明实施例提供的双面显示装置正、反两面对应像素单元的结构示意图（正面像素单元为主动发光显示单元）；
图2是本发明实施例提供的双面显示装置正、反两面对应像素单元的另一结构示意图（正面像素单元为被动发光显示单元）；
图3是本发明实施例一提供的双面显示装置一个显示模组的等效电路图（正、反两面均为主动发光显示单元）；
图4是本发明实施例一提供的双面显示装置一个显示模组的等效电路图（正、反两面均为被动发光显示单元）；
图5是本发明实施例一提供的双面显示装置一个显示模组的等效电路图（正面为主动发光显示单元，反面为被动发光显示单元）；
图6是本发明实施例二提供的双面显示装置一个显示模组的等效电路图（正、反两面均为主动发光显示单元）；
图7是本发明实施例二提供的双面显示装置一个显示模组的等效电路图（正、反两面均为被动发光显示单元）；
图8是本发明实施例三提供的双面显示装置一个显示模组的等效电路图（正面为主动发光显示单元，反面为被动发光显示单元）；
图9是本发明实施例四提供的双面显示装置一个显示模组的等效电路图（正、反两面均为主动发光显示单元）；
图10是本发明实施例四提供的双面显示装置一个显示模组的等效电路图（正、反两面均为被动发光显示单元）；
图11是本发明实施例四提供的双面显示装置一个显示模组的等效电路图（正面为主动发光显示单元，反面为被动发光显示单元）；
图12是本发明实施例五提供的双面显示装置一个显示模组的等效电路图（正面为主动发光显示单元，反面为被动发光显示单元）；
图13是本发明实施例五提供的双面显示装置一个显示模组的等效电路图（正面为主动发光显示单元，反面为被动发光显示单元）。
 本发明的实施方式
为了使本发明的目的、技术方案及优点更加清楚明白，以下结合附图及实施例，对本发明进行进一步详细说明。应当理解，此处所描述的具体实施例仅仅用以解释本发明，并不用于限定本发明。
本发明实施例将第一扫描线和第二扫描线分别接入晶体管T1的第一输入端和第二输入端，并使正、反两面对应像素单元均与晶体管T1的输出端相连，如此只需采用现有单面薄膜晶体管背板即可实现双面显示控制，线路少，结构简单，极大地降低了双面显示装置的成本。
以下列举若干实施例对本发明的实现进行详细描述。
实施例一
如图1~5所示，本发明实施例提供的双面显示装置正、反两面均具有多个像素单元，正面像素单元与反面像素单元一一对应。为便于说明，在此以一对应的正面像素单元1和反面像素单元2进行描述。本实施例中正、反两面对应像素单元1、2均由同一电路31所控制，所述电路31包括晶体管T1，所述正、反两面对应像素单元1、2及电路31在此形成一个显示模组。其中，所述晶体管T1可以是N型薄膜晶体管，也可以是P型薄膜晶体管，此处采用N型薄膜晶体管。所述晶体管T1的第一输入端接入第一扫描线11，本实施例中所述第一扫描线11为行扫描线；第二输入端接入第二扫描线12，本实施例中所述第二扫描线12为列扫描线。所述正、反两面对应像素单元1、2均与晶体管T1的输出端电连接。这样使得本双面显示装置中行列扫描线数目与现有单面显示装置的相同，与现有双面显示装置相比，本双面显示装置线路少，不仅设计及制造相对容易，极大地降低了本双面显示装置的成本，而且提高了像素开口率，提高发光效率。另外，因只需将晶体管T1的输出端引向反面像素单元，结构简单。
通常，所述电路31设于具有导通孔30的薄膜晶体管背板3，所述晶体管T1的输出端经由导通孔30引向反面像素单元2。具体地，所述导通孔30设有与晶体管T1的输出端电连接的电介质，所述电介质与反面像素单元2电连接。这样使所述正面像素单元1与反面像素单元2并联接入晶体管T1的输出端，两者同时开启或同时关闭，且同时显示相同图像，主要用于双面显示广告。其中，所述正面像素单元1可为主动发光显示单元或被动发光显示单元，所述反面像素单元2可为主动发光显示单元或被动发光显示单元，所述主动发光显示单元和被动发光显示单元均包含有存储电容。
现分别以用作主动发光显示器件的有机发光二级管OLED和用作被动发光显示器件的电子墨水E-INK为例进行说明。图3所示双面显示装置正、反两面均采用主动发光显示单元，位于所述双面显示装置正面的主动发光显示单元还包含有用作主动发光显示器件的OLED1和晶体管T4；所述晶体管T4的控制端与晶体管T1的输出端电连接，输入端与OLED1 的阴极电连接，输出端接地。其中，所述晶体管T4的控制端与输出端间接有存储电容C1，OLED1的阳极接入电源线13。另外，从所述电源线13输入的电源SEL_VDD可根据本双面显示装置各面工作状态，在周边驱动控制芯片控制下自动转换为0或VDD。
同样地，位于所述双面显示装置反面的主动发光显示单元还包含有用作主动发光显示器件的OLED2和晶体管T5；所述晶体管T5的控制端与晶体管T1的输出端电连接，输入端与OLED2的阴极电连接，输出端接地。其中，所述晶体管T5的控制端与输出端间接有存储电容C2，OLED2的阳极接入同一电源线13。
图4所示双面显示装置正、反两面均采用被动发光显示单元，位于所述双面显示装置正面的被动发光显示单元还包含有用作被动发光显示器件的E-INK1，所述E-INK1设于存储电容C1两极板之间。其中，所述存储电容C1一个极板与晶体管T1的输出端电连接，另一个极板接地。
同样地，位于所述双面显示装置反面的被动发光显示单元还包含有用作被动发光显示器件的E-INK2，所述E-INK2设于存储电容C2两极板之间。其中，所述存储电容C2一个极板与晶体管T1的输出端电连接，另一个极板接地。
图5所示双面显示装置正面采用主动发光显示单元，反面采用被动发光显示单元。位于所述双面显示装置正面的主动发光显示单元还包含有用作主动发光显示器件的OLED1和晶体管T4；所述晶体管T4的控制端与晶体管T1的输出端电连接，输入端与OLED1 的阴极电连接，输出端接地。其中，所述晶体管T4的控制端与输出端间接有存储电容C1，OLED1的阳极接入电源线13。
类似地，位于所述双面显示装置反面的被动发光显示单元还包含有用作被动发光显示器件的E-INK2，所述E-INK2设于存储电容C2两极板之间。其中，所述存储电容C2一个极板与晶体管T1的输出端电连接，另一个极板接地。
应当理解，若所述双面显示装置正面采用被动发光显示单元，反面采用主动发光显示单元，其构成和效果同上，在此不再赘述。这样兼容了主动发光显示（如OLED）以及被动发光显示（如E-INK）。如此即可通过最佳节电模式实现任何光线环境下的显示：在阳光下使用被动发光的显示面，如电子墨水E-INK；而在夜间或者黑暗的情况下使用主动发光的显示面，如有机发光二极管OLED。
在此应当说明的是，本实施例中所述晶体管T1的栅极G1用作第一输入端，源极S1用作第二输入端，漏极D1用作输出端。所述晶体管T4的栅极G4用作控制端，源极S4用作输入端，漏极D4用作输出端。所述晶体管T5的栅极G5用作控制端，源极S5用作输入端，漏极D5用作输出端。
实施例二
与实施例一不同的是，本实施例中所述晶体管T1的输出端与正面像素单元1之间设有对该正面像素单元1进行选通的晶体管T2；所述晶体管T2的输入端与晶体管T1的输出端电连接，输出端与该正面像素单元1电连接，控制端接入控制线14，如图6、7所示。此时只需将本双面显示装置中各晶体管T2的控制端接入同一控制线14即可对所有正面像素单元1进行选通控制，这样仅增加一条控制线14。与现有双面显示装置相比，线路少，布局简单。
其中，所述晶体管T2的栅极G2用作控制端，源极S2用作输入端，漏极D2用作输出端。一旦启动本双面显示装置，本双面显示装置反面像素单元2即发光显示；而正面则根据实际情况选择性发光显示，具体通过输入控制线14的控制信号进行选通控制。这样可以将本双面显示装置反面作为常用显示面，而正面作为辅助显示面，增强本双面显示装置使用灵活性。
实施例三
与实施例一、二不同的是，本实施例仅在所述晶体管T1的输出端与反面像素单元2之间设对该反面像素单元2进行选通的晶体管T3；所述晶体管T3的输入端与晶体管T1的输出端电连接，输出端与该反面像素单元2电连接，控制端接入控制线14，如图8所示。此时只需将本双面显示装置中各晶体管T3的控制端接入同一控制线14即可对所有反面像素单元2进行选通控制，这样仅增加一条控制线14。与现有双面显示装置相比，线路少，布局简单。
其中，所述晶体管T3的栅极G3用作控制端，源极S3用作输入端，漏极D3用作输出端。一旦启动本双面显示装置，本双面显示装置正面像素单元1即发光显示；而反面则根据实际情况选择性发光显示，具体通过输入控制线14的控制信号进行选通控制。这样可以将本双面显示装置正面作为常用显示面，而反面作为辅助显示面，增强本双面显示装置使用灵活性。
实施例四
与上述各实施例不同的是，本实施例中所述晶体管T1的输出端与正面像素单元1之间设有对该正面像素单元1进行选通的晶体管T2，所述晶体管T1的输出端与反面像素单元2之间设有对该反面像素单元2进行选通的晶体管T3。其中，所述晶体管T2的输入端与晶体管T1的输出端电连接，输出端与该正面像素单元1电连接，控制端接入控制线14；所述晶体管T3的输入端与晶体管T1的输出端电连接，输出端与该反面像素单元2电连接，控制端接入所述控制线14，如图9~11所示。此时只需将本双面显示装置中各晶体管T2、晶体管T3的控制端均接入同一控制线14即可对所有正面像素单元1和反面像素单元2进行选通控制，使本双面显示装置正、反两面同时显示相同图像，这样仅增加一条控制线14。与现有双面显示装置相比，线路少，布局简单。
实施例五
为使本双面显示装置正、反两面不同时显示（如正面显示，反面不显示；或反面显示，正面不显示；即仅一面显示），或者使正、反两面同时显示不同图像，需于所述晶体管T2的控制端与晶体管T3的控制端之间先接入反相器INV，再接入同一控制线14。例如，所述晶体管T2的控制端接有反相器INV；所述反相器INV的输入端与晶体管T3的控制端接入同一控制线14，输出端与所述晶体管T2的控制端电连接，如图12所示。又如，所述晶体管T3的控制端接有反相器INV；所述反相器INV的输入端与晶体管T2的控制端接入同一控制线14，输出端与所述晶体管T3的控制端电连接，如图13所示。
若从所述控制线14输入使晶体管T2选通的控制信号Ctrl_1=“1”，高电位，且从所述电源线13输入的电源SEL_VDD自动转为VDD；该控制信号Ctrl_1=“1”经反相器调节后变为使晶体管T3关闭的控制信号Ctrl_2=“0”，低电位。此时晶体管T2选通，晶体管T3关闭，正面像素单元1受晶体管T1行列扫描控制，仅正面显示。
若从所述控制线14输入使晶体管T2关闭的控制信号Ctrl_1=“0”，低电位，且从所述电源线13输入的电源SEL_VDD自动转为0；该控制信号Ctrl_1=“0”经反相器调节后变为使晶体管T3选通的控制信号Ctrl_2=“1”，高电位。此时晶体管T2关闭，晶体管T3选通，反面像素单元2受晶体管T1行列扫描控制，仅反面显示。
若先从所述控制线14输入使晶体管T2选通的控制信号Ctrl_1=“1”，高电位；该控制信号Ctrl_1=“1”经反相器调节后变为使晶体管T3关闭的控制信号Ctrl_2=“0”，低电位。此时晶体管T2选通，晶体管T3关闭，正面像素单元1受经晶体管T1输入的第一扫描信号控制，即本双面显示装置正面显示由所述第一扫描信号控制所形成的图像。同时，所述第一扫描信号同时对正面像素单元1的存储电容C1进行充电，直至所述正面像素单元1的存储电容C1的电压达到维持该正面像素单元1显示的电压。接着，从所述控制线14输入使晶体管T2关闭的控制信号Ctrl_1=“0”，低电位；该控制信号Ctrl_1=“0”经反相器调节后变为使晶体管T3选通的控制信号Ctrl_2=“1”，高电位。此时晶体管T2关闭，晶体管T3选通，反面像素单元2受经晶体管T1输入的第二扫描信号控制，即本双面显示装置反面显示由所述第二扫描信号控制所形成的图像。同时，所述第二扫描信号同时对反面像素单元2的存储电容C2进行充电，直至所述反面像素单元2的存储电容C2的电压达到维持该反面像素单元2显示的电压。因设有存储电容，本双面显示装置反面显示时，正面将维持原来显示的图像，直至下一周期晶体管T2选通。同样地，本双面显示装置正面显示时，反面将维持原来显示的图像，直至下一周期晶体管T3选通。
本实施例中所述第一扫描信号从第一扫描线11和第二扫描线12输入后，先后经晶体管T1、晶体管T2传送至正面像素单元1。所述第二扫描信号从第一扫描线11和第二扫描线12输入后，先后经晶体管T1、晶体管T3传送至反面像素单元2。其中，所述第一扫描信号和第二扫描信号为不同图像信号且分时交替传送至正面像素单元1和反面像素单元2。这样本双面显示装置可以于正面先显示一幅图像，然后于反面显示另一幅图像，依此循环，直至正、反两面同时显示连续变化的不同图像；也可以正面先显示一幅图像的行（列），然后反面显示另一幅图像的行（列），依此交替，直至正、反两面各自显示一幅完整的图像，之后依此循环，直至正、反两面同时显示连续变化的不同图像。如此本双面显示装置正、反两面可以同时显示不同图像，特别适用于户外广告展示。当然，若所述第一扫描信号和第二扫描信号为相同图像信号，则本双面显示装置正、反两面可同时显示相同图像。
以上所述仅为本发明的较佳实施例而已，并不用以限制本发明，凡在本发明的精神和原则之内所作的任何修改、等同替换和改进等，均应包含在本发明的保护范围之内。

Claims (15)

  1. 一种双面显示装置，正、反两面均具有多个像素单元，正面像素单元与反面像素单元一一对应，其特征在于，正、反两面对应像素单元均由同一电路所控制，所述电路包括晶体管T1；所述晶体管T1的第一输入端接入第一扫描线，第二输入端接入第二扫描线；所述正、反两面对应像素单元均与晶体管T1的输出端电连接。
  2. 如权利要求1所述的双面显示装置，其特征在于，所述晶体管T1的输出端与正面像素单元之间设有对该正面像素单元进行选通的晶体管T2；所述晶体管T2的输入端与晶体管T1的输出端电连接，输出端与该正面像素单元电连接，控制端接入控制线。
  3. 如权利要求2所述的双面显示装置，其特征在于，所述晶体管T1的栅极用作第一输入端，源极用作第二输入端，漏极用作输出端；所述晶体管T2的栅极用作控制端，源极用作输入端，漏极用作输出端。
  4. 如权利要求1、2或3所述的双面显示装置，其特征在于，所述晶体管T1的输出端与反面像素单元之间设有对该反面像素单元进行选通的晶体管T3；所述晶体管T3的输入端与晶体管T1的输出端电连接，输出端与该反面像素单元电连接，控制端接入控制线。
  5. 如权利要求4所述的双面显示装置，其特征在于，所述晶体管T2和晶体管T3的控制端均接入同一控制线。
  6. 如权利要求4所述的双面显示装置，其特征在于，所述晶体管T2的控制端与晶体管T3的控制端之间先接入反相器INV，再接入同一控制线。
  7. 如权利要求1~6中任一项所述的双面显示装置，其特征在于，所述电路设于具有导通孔的薄膜晶体管背板，所述晶体管T1或晶体管T3的输出端经由导通孔引向反面像素单元。
  8. 如权利要求7所述的双面显示装置，其特征在于，所述导通孔设有与晶体管T1或晶体管T3的输出端电连接的电介质，所述电介质与反面像素单元电连接。
  9. 如权利要求1~8中任一项所述的双面显示装置，其特征在于，所述正面像素单元为主动发光显示单元或被动发光显示单元，所述反面像素单元为主动发光显示单元或被动发光显示单元，所述主动发光显示单元和被动发光显示单元均包含有存储电容。
  10. 如权利要求9所述的双面显示装置，其特征在于，所述主动发光显示单元还包含有用作主动发光显示器件的有机发光二级管OLED和晶体管T4或晶体管T5；所述晶体管T4或晶体管T5的控制端与晶体管T1、晶体管T2或晶体管T3的输出端电连接，输入端与有机发光二级管OLED 的阴极电连接，输出端接地；
    其中，所述晶体管T4或晶体管T5的控制端与输出端间接有存储电容C，OLED的阳极接入电源线。
  11. 如权利要求9所述的双面显示装置，其特征在于，所述被动发光显示单元还包含有用作被动发光显示器件的电子墨水E-INK，所述电子墨水E-INK设于存储电容C两极板之间；
    其中，所述存储电容C一个极板与晶体管T1、晶体管T2或晶体管T3的输出端电连接，另一个极板接地。
  12. 一种控制如权利要求5所述的双面显示装置的方法，其特征在于，所述方法包括以下步骤：
    于所述控制线输入使晶体管T2和晶体管T3同时选通的控制信号，分别与所述晶体管T2和晶体管T3电连接的正面像素单元和反面像素单元同时受扫描信号控制进行显示；
    其中，所述扫描信号从第一扫描线和第二扫描线输入后，经晶体管T1分别传送至所述正面像素单元和反面像素单元。
  13. 一种控制如权利要求6所述的双面显示装置的方法，其特征在于，所述方法包括以下步骤：
    从所述控制线输入使晶体管T2选通、晶体管T3关闭的控制信号，与所述晶体管T2的输出端电连接的正面像素单元受扫描信号控制进行显示，所述扫描信号从第一扫描线和第二扫描线输入后，先后经晶体管T1、晶体管T2传送至正面像素单元，仅所述双面显示装置的正面显示；
    或者，从所述控制线输入使晶体管T2关闭、晶体管T3选通的控制信号，与所述晶体管T3的输出端电连接的反面像素单元受扫描信号控制进行显示，所述扫描信号从第一扫描线和第二扫描线输入后，先后经晶体管T1、晶体管T3传送至反面像素单元，仅所述双面显示装置的反面显示。
  14. 一种控制如权利要求6所述的双面显示装置的方法，其特征在于，所述方法包括以下步骤：
    从所述控制线输入使晶体管T2选通、晶体管T3关闭的控制信号Ctrl_1，与所述晶体管T2的输出端电连接的正面像素单元受第一扫描信号控制进行显示，所述第一扫描信号同时对正面像素单元的存储电容进行充电，直至所述正面像素单元的存储电容的电压达到维持该正面像素单元显示的电压；
    从所述控制线输入使晶体管T2关闭、晶体管T3选通的控制信号Ctrl_2，与所述晶体管T3的输出端电连接的反面像素单元受第二扫描信号控制进行显示，所述第二扫描信号同时对反面像素单元的存储电容进行充电，直至所述反面像素单元的存储电容的电压达到维持该反面像素单元显示的电压；
    其中，所述第一扫描信号从第一扫描线和第二扫描线输入后，先后经晶体管T1、晶体管T2传送至正面像素单元；所述第二扫描信号从第一扫描线和第二扫描线输入后，先后经晶体管T1、晶体管T3传送至反面像素单元。
  15. 如权利要求14所述的方法，其特征在于，所述第一扫描信号和第二扫描信号为不同图像信号且分时交替传送至正面像素单元和反面像素单元，所述双面显示装置正、反两面同时显示不同图像。
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