WO2017197979A1 - 有机电致发光显示面板、老化测试装置、方法及显示装置 - Google Patents

有机电致发光显示面板、老化测试装置、方法及显示装置 Download PDF

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WO2017197979A1
WO2017197979A1 PCT/CN2017/078051 CN2017078051W WO2017197979A1 WO 2017197979 A1 WO2017197979 A1 WO 2017197979A1 CN 2017078051 W CN2017078051 W CN 2017078051W WO 2017197979 A1 WO2017197979 A1 WO 2017197979A1
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Prior art keywords
display panel
organic electroluminescent
electroluminescent display
organic electroluminescence
aging test
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PCT/CN2017/078051
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English (en)
French (fr)
Inventor
吴小平
Original Assignee
京东方科技集团股份有限公司
成都京东方光电科技有限公司
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Application filed by 京东方科技集团股份有限公司, 成都京东方光电科技有限公司 filed Critical 京东方科技集团股份有限公司
Priority to EP17745641.5A priority Critical patent/EP3460784A4/en
Priority to US15/550,676 priority patent/US10283028B2/en
Publication of WO2017197979A1 publication Critical patent/WO2017197979A1/zh

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    • 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
    • G09G3/006—Electronic inspection or testing of displays and display drivers, e.g. of LED or LCD displays
    • 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]
    • 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
    • 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]
    • G09G3/3275—Details of drivers for data electrodes
    • G09G3/3291—Details of drivers for data electrodes in which the data driver supplies a variable data voltage for setting the current through, or the voltage across, the light-emitting elements
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/10—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
    • 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
    • G09G2300/0819—Several active elements per pixel in active matrix panels used for counteracting undesired variations, e.g. feedback or autozeroing
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/04—Maintaining the quality of display appearance
    • G09G2320/043—Preventing or counteracting the effects of ageing
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2330/00—Aspects of power supply; Aspects of display protection and defect management
    • G09G2330/04—Display protection
    • 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
    • G09G3/03—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes specially adapted for displays having non-planar surfaces, e.g. curved displays
    • G09G3/035—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes specially adapted for displays having non-planar surfaces, e.g. curved displays for flexible display surfaces

Definitions

  • Embodiments of the present disclosure relate to the field of display technologies, and in particular, to an organic electroluminescence display panel, an aging test apparatus, a method, and a display apparatus.
  • the organic electroluminescent display (OLED) panel has the advantages of simple preparation process, low cost, high luminous efficiency, and easy formation of a flexible structure.
  • the aging test is generally performed after the package is completed to ensure the stability and reliability of the OLED panel.
  • the process of the burn-in test generally involves applying a preset voltage to the OLED panel using a signal generator and maintaining a preset duration.
  • a signal generator can be used to simultaneously drive a plurality of OLED panels.
  • a plurality of OLED panels are connected in parallel and connected to the signal generator, and then subjected to an aging test.
  • the test results of the OLED panel and other OLED panels connected in parallel are abnormal.
  • Embodiments of the present disclosure provide an organic electroluminescence display panel, an aging test apparatus, a method, and a display apparatus.
  • an embodiment of the present disclosure provides an aging test apparatus for an organic electroluminescence display panel, comprising: a signal generator configured to apply a signal required for testing to an organic electroluminescence display panel; a coupling device electrically coupled between the signal generator and the organic electroluminescent display panel, and configured to maintain a normal organic electroluminescent display panel and a signal generator during an aging test The electrical coupling of the abnormal organic electroluminescent display panel and the signal generator is coupled.
  • the electrical coupling device comprises: a plurality of switching devices. Each switching device is electrically coupled between the signal generator and a corresponding organic electroluminescent display panel. The switching device is configured to be turned off when the corresponding organic electroluminescent display panel is abnormal.
  • the signal generator includes a first signal terminal and a second signal terminal.
  • the first signal end is electrically coupled to the organic electroluminescent display panel via a switching device.
  • the second signal end is electrically coupled to the organic electroluminescent display panel.
  • the switching device comprises a thin film transistor.
  • the signal generator also includes a third signal terminal.
  • the control electrode of the thin film transistor is electrically coupled to the third signal end, the first pole is electrically coupled to the first signal end, and the second pole is electrically coupled to the organic electroluminescent display panel.
  • an embodiment of the present disclosure further provides an aging test method for an organic electroluminescence display panel, which uses the above-described aging test device for an organic electroluminescence display panel, wherein the method includes: by a signal generator Applying a preset voltage signal to each of the plurality of organic electroluminescent display panels via the electrical coupling device and maintaining the first predetermined duration; determining whether each of the organic electroluminescent display panels is normal; passing by the signal generator The electrical coupling device applies a preset voltage signal to the normal organic electroluminescent display panel and maintains the second predetermined duration.
  • a normal organic electroluminescent display panel is simultaneously applied with a preset voltage signal and maintained for a second predetermined duration.
  • determining whether each of the organic electroluminescent display panels is normal comprises detecting whether a current of each of the organic electroluminescent display panels belongs to a preset range.
  • determining whether each of the organic electroluminescent display panels is normal includes: capturing a display screen of each of the organic electroluminescent display panels, and comparing with a preset display screen.
  • the first preset duration is less than the second preset duration.
  • an embodiment of the present disclosure further provides an organic electroluminescence display panel that performs an aging test using the above-described burn-in test method.
  • an embodiment of the present disclosure further provides a display device comprising: the above organic electroluminescent display panel.
  • one signal generator can simultaneously drive a plurality of parallel organic electroluminescent display panels to ensure high efficiency of aging test .
  • the normal organic electroluminescent display panel can be electrically coupled to the signal generator, and the abnormal organic electroluminescent display panel can be electrically coupled to the signal generator. Therefore, it is possible to prevent an abnormal organic electroluminescence display panel from affecting other normal organic electroluminescence display panels connected in parallel with the high efficiency of the aging test.
  • FIG. 1 is a schematic structural diagram of an aging test apparatus for an organic electroluminescence display panel according to an embodiment of the present disclosure
  • FIG. 2 is another schematic structural diagram of an aging test apparatus for an organic electroluminescence display panel according to an embodiment of the present disclosure
  • FIG. 3 is a first exemplary flow chart of an aging test method provided by an embodiment of the present disclosure
  • FIG. 4 is a second exemplary flowchart of an aging test method provided by an embodiment of the present disclosure.
  • FIG. 5 is a third exemplary flowchart of an aging test method provided by an embodiment of the present disclosure.
  • FIG. 6 is a fourth exemplary flow chart of an aging test method provided by an embodiment of the present disclosure.
  • FIG. 1 is a schematic structural diagram of an aging test apparatus for an organic electroluminescence display panel according to an embodiment of the present disclosure.
  • the aging test apparatus of the organic electroluminescence display panel 2 includes a signal generator 1 and an electrical coupling device 10 .
  • the signal generator 1 is configured to apply a signal required for testing to the organic electroluminescent display panel.
  • the electrical coupling device 10 is electrically coupled between the signal generator and the organic electroluminescent display panel, and is configured to maintain the normal organic electroluminescent display panel 2 and the signal generator 1 during the burn-in test. Electrically coupled, and electrically disconnecting the abnormal organic electroluminescent display panel 2 from the signal generator 1.
  • Electrically coupled includes direct or indirect electrical connections, as generally understood by those skilled in the art.
  • the electrical coupling device 10 can include a plurality of switching devices 3. Each switching device 3 is electrically coupled between the signal generator 1 and a corresponding organic electroluminescent display panel 2, and the switching device 3 is configured to be turned off when the corresponding organic electroluminescent display panel 2 is abnormal.
  • the signal generator 1 may include a first signal terminal 11 and a second signal terminal 12.
  • the first signal terminal 11 is electrically coupled to the organic electroluminescent display panel 2 via the switching device 3.
  • the second signal terminal 12 is electrically coupled to the organic electroluminescent display panel 2.
  • the first signal terminal 11 can be used to provide a timing signal or a power signal with a small current value
  • the second signal terminal 12 can be used to provide a power signal with a large current value, for example, an organic The power supply for the light emitting device.
  • one signal generator can simultaneously drive a plurality of parallel organic electroluminescence display panels to ensure high efficiency of the burn-in test.
  • a plurality of switching devices corresponding to the respective organic electroluminescent display panels are added to the burn-in test device to electrically couple the signal generator and the corresponding organic electroluminescent display panel. Therefore, it is possible to first detect whether each of the organic electroluminescence display panels is abnormal, and then use the switching device to different The electrical coupling between the conventional organic electroluminescent display panel and the signal generator is broken, and then the normal organic electroluminescent display panel is subjected to an aging test. In this way, an abnormal organic electroluminescent display panel can be prevented from affecting other organic electroluminescent display panels connected in parallel with the high efficiency of the aging test.
  • FIG. 2 is another schematic structural diagram of an aging test apparatus for an organic electroluminescence display panel according to an embodiment of the present disclosure.
  • the signal generator 1 may include a plurality of first signal terminals 11. It is shown in Fig. 2 that four first signal terminals 11 are simultaneously connected to all of the organic electroluminescent display panels.
  • each of the switching devices 3 may include: a plurality of thin film transistors 30 (Thin Film Transistors, TFTs) corresponding to the plurality of first signal terminals 11 in one-to-one correspondence, and four thin film transistors 30 are shown in FIG. happening.
  • TFTs Thin Film Transistors
  • the signal generator 1 may further include a plurality of third signal terminals 13 that are in one-to-one correspondence with the plurality of switching devices 3, that is, the number of the third signal terminals 13 may correspond to the number of the organic electroluminescent display panels 2.
  • Each of the third signal terminals 13 is electrically coupled to the control poles of the plurality of thin film transistors 30 in the corresponding switching device 3, so that the third signal terminal 13 in the signal generator 1 can be used to control the corresponding switching device 3
  • the plurality of thin film transistors 30 are simultaneously turned on or turned off at the same time.
  • each switching device 3 a first pole of each of the plurality of thin film transistors 30 is electrically coupled to a corresponding first signal terminal 11, and a second pole of each of the plurality of thin film transistors 30 is associated with a corresponding organic
  • the light emitting display panel 2 is electrically coupled.
  • the gate electrode may be a gate electrode, and the first and second electrodes may correspond to the source and the drain, respectively.
  • the thin film transistor has a small resistance when turned on, and therefore does not affect the signal generator driving the organic electroluminescence display panel.
  • the thin film transistor is small in size and easy to manufacture, which is advantageous for reducing the volume of the aging test device and reducing the cost.
  • the structure of the switch is not limited to the thin film transistor shown in FIG. 2, and may be other types of switch structures having a small resistance, and Make a limit.
  • the organic electroluminescent display panel aging test method includes the following steps: S301: applying a preset voltage signal to each of the plurality of organic electroluminescent display panels and maintaining a first preset duration; S302, determining Whether each organic electroluminescent display panel is normal; S303, normal The organic electroluminescent display panel applies a preset voltage signal and maintains a second preset duration.
  • step S301 as an example, the signal generator 1 shown in FIG. 1 can be used to apply a preset voltage signal to each of the plurality of organic electroluminescent display panels 2 via the electrical coupling device 10 and maintain the first The preset duration.
  • step S302 after the organic electroluminescence display panel 2 is driven, data acquired by various sensors can be used to determine its operating state.
  • the detection of the organic electroluminescent display panel 2 may be sequentially performed, that is, a voltage signal may be applied to the first organic electroluminescent display panel to determine whether the organic electroluminescent display panel 2 is normal, if The organic electroluminescent display panel 2 is abnormal, the organic electroluminescent display panel 2 is disconnected from all the first signal terminals, and then a voltage signal is applied to the next organic electroluminescent display panel 2 until all organic electroluminescence is completed. The judgment of the operating state of the panel 2 is displayed. The manner in which one organic electroluminescent display panel 2 is detected each time can reduce the number of sensors required.
  • step S302 the aging test for the normal organic electroluminescent display panel 2 can also be performed using the signal generator 1 via the electrical coupling device 10.
  • each of the organic electroluminescent display panels 2 may be first detected using the signal generator 1 to determine whether each of the organic electroluminescent display panels 2 is normal. After the abnormal organic electroluminescence display panel 2 is determined, the abnormal organic electroluminescence display panel 2 is disconnected from the signal generator 1, and the normal organic electroluminescence display panel 2 is subjected to an aging test. In this way, the abnormal organic electroluminescent display panel 2 can be prevented from affecting other normal organic electroluminescent display panels 2 connected in parallel with the high efficiency of the aging test.
  • step S303 voltage signals may be simultaneously applied to all of the normal organic electroluminescent display panels and maintained for a second predetermined duration.
  • the normal organic electroluminescent display panels can also be divided into multiple groups, and each organic electro-optic in each group can be controlled.
  • the plurality of switches corresponding to the light emitting display panel are turned on, and the respective organic electroluminescent display panels in the group simultaneously apply a voltage signal and maintain the second preset duration.
  • the method of group testing can reduce the requirements for the driving ability of the signal generator while ensuring efficiency.
  • the first preset duration can be controlled in the range of 1 s to 10 s, which can ensure high accuracy for each organic electroluminescent display panel and improve the efficiency of the aging test.
  • the second preset duration can be controlled in the range of 20 min to 30 min to ensure good results of the burn-in test.
  • the first preset duration is set to be less than the second preset duration, which can improve the efficiency of the aging test efficiency.
  • step S302 it is determined in step S302 whether each of the organic electroluminescence display panels is normal.
  • Step S3021 is performed to determine whether all of the organic electroluminescent display panels 2 are normal. If all are normal, step S401 is performed to simultaneously apply a voltage signal to each of the organic electroluminescent display panels and maintain the second predetermined duration. If an abnormal organic electroluminescence display panel 2 is present, step S3022 is performed to electrically disconnect the abnormal organic electroluminescence display panel 2 from the signal generator 1 (for example, the first signal terminal 11). Then, proceeding to step S303, the normal organic electroluminescent display panel is loaded with the preset voltage signal and maintained for the second preset duration.
  • the abnormal organic electroluminescence display panel 2 may still be electrically coupled to the signal generator 1.
  • step S3022 it is possible to ensure electrical coupling of the abnormal organic electroluminescent display panel 2 and the first signal terminal 11 of the signal generator 1 to prevent the influence on the normal organic electroluminescent display panel 2.
  • FIG. 5 is a third exemplary flow chart of the burn-in test method provided by an embodiment of the present disclosure.
  • step S302 it is detected whether the current of each of the organic electroluminescence display panels 2 belongs to a preset range to determine whether it is normal. For example, if the current is too small, the circuit inside the organic electroluminescence display panel 2 may be broken, and if the current is too large, a short circuit may occur in the circuit inside the organic electroluminescence display panel 2. By detecting the current value, it is possible to quickly and conveniently determine whether the organic electroluminescence display panel 2 is normal.
  • FIG. 6 is a fourth exemplary flow chart of an aging test method provided by an embodiment of the present disclosure.
  • FIG. 6 differs from FIG. 5 in that, in step S302, a display screen of each organic electroluminescence display panel is captured, and the screen is compared with a preset display screen to determine that each has Whether the electroluminescent display panel 2 is normal. Using the display screen, more information can be obtained to more accurately judge the state of the organic electroluminescence display panel 2. The comparison between the display screens can be done directly by the tester or by the image processing device.
  • the implementation manner of determining whether each of the organic electroluminescent display panels is normal is not limited to the determination manners as shown in FIG. 5 and FIG. 6 , and may be other similar determination manners, which are not limited herein.
  • An embodiment of the present disclosure further provides an organic electroluminescence display panel, which is an organic electroluminescence display panel after performing an aging test using the above-described burn-in test method provided by an embodiment of the present disclosure.
  • an organic electroluminescent display panel which is an organic electroluminescence display panel after performing an aging test using the above-described burn-in test method provided by an embodiment of the present disclosure.
  • the organic electroluminescent display panel refer to the embodiment of the above aging test method, and the repeated description is omitted.
  • the embodiment of the present disclosure further provides a display device, including the above-mentioned organic electroluminescent display panel provided by the embodiment of the present disclosure, which may be: a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame. , navigation, etc. Any product or component that has a display function.
  • a display device including the above-mentioned organic electroluminescent display panel provided by the embodiment of the present disclosure, which may be: a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame. , navigation, etc. Any product or component that has a display function.
  • the display device reference may be made to the embodiment of the above organic electroluminescent display panel, and the repeated description is omitted.
  • An embodiment of the present disclosure provides an organic electroluminescence display panel, an aging test device, a method, and a display device.
  • a signal generator can simultaneously drive a plurality of parallel organic electroluminescent display panels to ensure high efficiency of aging test. .
  • a plurality of switching devices corresponding to the respective organic electroluminescent display panels are added to the burn-in test device to electrically couple the signal generator and the corresponding organic electroluminescent display panel. Therefore, it is possible to first detect whether an abnormality is detected one by one for each of the organic electroluminescent display panels, and then disconnect the electrical coupling between the abnormal organic electroluminescence display panel and the signal generator by using a switch, and then, The electroluminescent display panel is subjected to an aging test. In this way, under the premise of ensuring the high efficiency of the aging test, the abnormal organic electroluminescent display panel can be prevented from causing other organic electroluminescent display panels connected in parallel thereto. influences.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Geometry (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Electroluminescent Light Sources (AREA)

Abstract

一种有机电致发光显示面板（2）、老化测试装置、方法及显示装置，一个信号发生器（1）可以同时驱动多个并联的有机电致发光显示面板（2），以保证老化测试的高效率。此外，在老化测试过程中，可以保持正常的有机电致发光显示面板（2）与所述信号发生器（1）的电耦接，并且断开异常的有机电致发光显示面板（2）与所述信号发生器（1）的电耦接。因此，可以在保证老化测试的高效率的前提下，避免异常的有机电致发光显示面板（2）对与其并联的其他正常有机电致发光显示面板（2）造成影响。

Description

有机电致发光显示面板、老化测试装置、方法及显示装置
相关申请的交叉引用
本申请要求2016年5月20日递交的中国专利申请第201610342258.9号的优先权，在此全文引用上述中国专利申请所公开的内容以作为本申请的一部分。
技术领域
本公开的实施例涉及显示技术领域，尤其涉及一种有机电致发光显示面板、老化测试装置、方法及显示装置。
背景技术
在现有的显示面板中，有机电致发光显示(Organic Electroluminescent Display,OLED)面板具有制备工艺简单、成本低、发光效率高以及易形成柔性结构等优点。
在现有的OLED面板的生产过程中，一般会在封装完成之后对其进行老化测试，以保证OLED面板的稳定性和可靠性。老化测试的过程一般包括利用信号发生器对OLED面板施加预设电压并维持预设时长。
为了降低老化测试的成本，提高老化测试的效率，可以利用一个信号发生器同时驱动多个OLED面板。多个OLED面板并联连接后与信号发生器连接，然后进行老化测试。在该测试过程中，如果某个OLED面板存在异常，则该OLED面板以及与其并联的其他OLED面板的测试结果都是异常。
如何在保证老化测试的高效率的前提下，避免异常OLED面板对与其并联的其他正常OLED面板造成影响，是本领域技术人员亟需解决的技术问题。
发明内容
本公开的实施例提供了一种有机电致发光显示面板、老化测试装置、方法及显示装置。
根据第一个方面，本公开的实施例提供了一种有机电致发光显示面板的老化测试装置，包括：信号发生器，被配置为向有机电致发光显示面板施加测试所需的信号；电耦接装置，其电耦接在所述信号发生器和所述有机电致发光显示面板之间，并且被配置在老化测试过程中，保持正常的有机电致发光显示面板与信号发生器的电耦接，断开异常的有机电致发光显示面板与信号发生器的电耦接。
在本发明的实施例中，电耦接装置包括：多个开关装置。每个开关装置电耦接在信号发生器和对应的有机电致发光显示面板之间。开关装置被配置为在对应的有机电致发光显示面板异常时断开。
在本发明的实施例中，信号发生器包括第一信号端和第二信号端。第一信号端经过开关装置与有机电致发光显示面板电耦接。第二信号端与所述有机电致发光显示面板电耦接。
在本发明的实施例中，开关装置包括薄膜晶体管。信号发生器还包括第三信号端。薄膜晶体管的控制极与所述第三信号端电耦接，第一极与第一信号端电耦接，第二极与有机电致发光显示面板电耦接。
根据第二个方面，本公开的实施例还提供了一种有机电致发光显示面板的老化测试方法，使用上述的有机电致发光显示面板的老化测试装置，其中，方法包括：由信号发生器经过电耦接装置对多个有机电致发光显示面板中的每个施加预设电压信号并维持第一预设时长；确定每个所述有机电致发光显示面板是否正常；由信号发生器经过电耦接装置对正常的有机电致发光显示面板施加预设电压信号并维持第二预设时长。
在本发明的实施例中，对正常的有机电致发光显示面板同时施加预设电压信号并维持第二预设时长。
在本发明的实施例中，确定每个所述有机电致发光显示面板是否正常包括：检测每个所述有机电致发光显示面板的电流是否属于预设范围。
在本发明的实施例中，确定每个所述有机电致发光显示面板是否正常 包括：拍摄每个所述有机电致发光显示面板的显示画面，并与预设的显示画面进行比较。
在本发明的实施例中，第一预设时长小于第二预设时长。
根据第三个方面，本公开实施例还提供了一种有机电致发光显示面板，利用上述老化测试方法进行老化测试。
根据第四个方面，本公开的实施例还提供了一种显示装置，包括：上述有机电致发光显示面板。
根据本公开的实施例提供的上述有机电致发光显示面板、老化测试装置、方法及显示装置，一个信号发生器可以同时驱动多个并联的有机电致发光显示面板，以保证老化测试的高效率。此外，在老化测试过程中，可以保持正常的有机电致发光显示面板与所述信号发生器的电耦接，并且断开异常的有机电致发光显示面板与所述信号发生器的电耦接，因此，可以在保证老化测试的高效率的前提下，避免异常的有机电致发光显示面板对与其并联的其他正常有机电致发光显示面板造成影响。
附图说明
为了更清楚地说明本公开的实施例的技术方案，下面将对实施例的附图进行简要说明，应当知道，以下描述的附图仅仅涉及本公开的一些实施例，而非对本公开的限制，其中：
图1是本公开的实施例提供的有机电致发光显示面板的老化测试装置的一个结构示意图；
图2是本公开的实施例提供的有机电致发光显示面板的老化测试装置的另一个结构示意图；
图3是本公开的实施例提供的老化测试方法的第一个示例性的流程图；
图4是本公开的实施例提供的老化测试方法的第二个示例性的流程图；
图5是本公开的实施例提供的老化测试方法的第三个示例性的流程图；
图6是本公开的实施例提供的老化测试方法的第四个示例性的流程图。
具体实施方式
下面结合附图，对本公开的实施例提供的有机电致发光显示面板、老化测试装置、方法及显示装置的具体实施方式进行详细地说明。显然，所描述的实施例仅仅是本公开一部分实施例，而不是全部的实施例。基于本公开的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他的实施例，都属于本公开保护的范围。
图1是本公开的实施例提供的有机电致发光显示面板的老化测试装置的一个结构示意图。如图1所示，有机电致发光显示面板2的老化测试装置包括：信号发生器1、电耦接装置10。信号发生器1被配置为向有机电致发光显示面板施加测试所需的信号。电耦接装置10电耦接在所述信号发生器和所述有机电致发光显示面板之间，并且被配置在老化测试过程中，保持正常的有机电致发光显示面板2与信号发生器1的电耦接，并且断开异常的有机电致发光显示面板2与信号发生器1的电耦接。按照本领域技术人员的通常理解，“电耦接”包括直接或者间接的电连接。
作为一个示例，电耦接装置10可以包括多个开关装置3。每个开关装置3电耦接在信号发生器1和对应的有机电致发光显示面板2之间，开关装置3被配置为在对应的有机电致发光显示面板2异常时断开。
作为一个示例，信号发生器1可以包括第一信号端11和第二信号端12。第一信号端11经过开关装置3与有机电致发光显示面板2电耦接。第二信号端12与有机电致发光显示面板2电耦接。在这样的耦接方式下，第一信号端11可以用于提供时序信号或者电流值较小的电源信号，第二信号端12可以用于提供电流值较大的电源信号，例如，有机电致发光器件的电源。
根据本公开的实施例提供的上述老化测试装置，一个信号发生器可以同时驱动多个并联的有机电致发光显示面板，以保证老化测试的高效率。此外，在老化测试装置中增加了与各有机电致发光显示面板一一对应的多个开关装置，以电耦接信号发生器和对应的有机电致发光显示面板。因此，可以首先检测各有机电致发光显示面板是否异常，然后利用开关装置将异 常的有机电致发光显示面板与信号发生器之间的电耦接断开，之后，再对正常的有机电致发光显示面板进行老化测试。这样，可以在保证老化测试的高效率的前提下，避免异常的有机电致发光显示面板对与其并联的其他有机电致发光显示面板造成影响。
图2是本公开的实施例提供的有机电致发光显示面板的老化测试装置的另一个结构示意图。如图2所示，作为一个示例，信号发生器1可以包括多个第一信号端11。图2中示出了四个第一信号端11同时被连接到所有有机电致发光显示面板。相对应地，每个开关装置3都可以包括：与多个第一信号端11一一对应的多个薄膜晶体管30(Thin Film Transistor,TFT)，图2中示出了四个薄膜晶体管30的情况。信号发生器1还可以包括：与多个开关装置3一一对应的多个第三信号端13，即，第三信号端13的数量可以与有机电致发光显示面板2的数量相对应。每个第三信号端13电耦接至对应的开关装置3中的多个薄膜晶体管30的控制极，这样，可以利用信号发生器1中的第三信号端13控制对应的开关装置3中的多个薄膜晶体管30同时开启或同时关闭。每个开关装置3中，多个薄膜晶体管30的每个的第一极与对应的第一信号端11电耦接，多个薄膜晶体管30的每个的第二极均与对应的有机电致发光显示面板2电耦接。
应当理解，在薄膜晶体管中，控制极可以是栅极，第一极和第二极可以分别与源极和漏极相对应。薄膜晶体管在导通时电阻较小，因此，不会对信号发生器驱动有机电致发光显示面板产生影响。此外，薄膜晶体管体积小，易于制作，有利于减小老化测试装置的体积，降低成本。然而，应当理解，在本公开的实施例提供的上述老化测试装置中，开关的结构并非局限于如图2所示的薄膜晶体管，还可以为电阻较小的其他类型的开关结构，在此不做限定。
图3是本公开的实施例提供的老化测试方法的第一个示例性的流程图。如图3所示，有机电致发光显示面板老化测试方法包括如下步骤：S301、对多个有机电致发光显示面板中的每个施加预设电压信号并维持第一预设时长；S302、确定每个有机电致发光显示面板是否正常；S303、对正常的 有机电致发光显示面板施加预设电压信号并维持第二预设时长。
在步骤S301中，作为一个示例，可以使用图1中所示的信号发生器1经过电耦接装置10对多个有机电致发光显示面板2中的每个施加预设电压信号并维持第一预设时长。在步骤S302中，在有机电致发光显示面板2被驱动后，可以使用各种传感器获取的数据对于其工作状态进行确定。作为一个示例，对于有机电致发光显示面板2的检测可以依次进行，即，可以先对第一个有机电致发光显示面板施加电压信号，确定该有机电致发光显示面板2是否正常，若该有机电致发光显示面板2异常，将该有机电致发光显示面板2与所有第一信号端断开连接，然后对下一个有机电致发光显示面板2施加电压信号，直到完成所有有机电致发光显示面板2的工作状态的判断。每次检测一个有机电致发光显示面板2的方式可以降低对于传感器数量的要求。作为另一个示例，也可以在完成对所有有机电致发光显示面板2施加电压信号之后，同时检测多个有机电致发光显示面板2的工作状态。若存在异常的有机电致发光显示面板，将异常的有机电致发光显示面板与所有第一信号端断开连接。同时检测多个有机电致发光显示面板2的方式可以节省时间。在步骤S302中，也可以使用信号发生器1经过电耦接装置10完成对于正常的有机电致发光显示面板2进行老化测试。
根据本公开的实施例提供的上述方法，可以先使用信号发生器1对各有机电致发光显示面板2的每个进行检测，确定每个有机电致发光显示面板2是否正常。在确定出异常的有机电致发光显示面板2后，将异常的有机电致发光显示面板2从信号发生器1断开，再对正常的有机电致发光显示面板2进行老化测试。这样，可以在保证老化测试的高效率的前提下，避免异常的有机电致发光显示面板2对与其并联的其他正常有机电致发光显示面板2造成影响。
作为一个示例，在步骤S303中，可以对所有正常的有机电致发光显示面板同时施加电压信号并维持第二预设时长。这样，可以最大限度地提高老化测试的效率。当然，在本公开的实施例提供的上述方法中，也可以将正常的各有机电致发光显示面板划分为多组，控制与每组中的各有机电致 发光显示面板对应的多个开关开启，对该组中的各有机电致发光显示面板同时施加电压信号并维持第二预设时长。分组测试的方式可以在保证效率的同时，降低对于信号发生器的驱动能力的要求。
作为一个示例，可以将第一预设时长控制在1s至10s范围，这能够既保证对每个有机电致发光显示面板检测的高准确率，又提高老化测试的效率。作为一个示例，可以将第二预设时长控制在20min至30min范围，以保证老化测试的良好效果。第一预设时长设定为小于第二预设时长，可以提高老化测试效率的效率。
图4是本公开的实施例提供的老化测试方法的第二个示例性的流程图。如图4所示，在步骤S302中确定每个有机电致发光显示面板是否正常之后。进行步骤S3021，判断是否所有的有机电致发光显示面板2都正常。如果所有的都正常，则进行步骤S401，对各有机电致发光显示面板同时施加电压信号并维持第二预设时长。如果存在异常的有机电致发光显示面板2，则进行步骤S3022，断开异常的有机电致发光显示面板2与信号发生器1(例如，第一信号端11)的电耦接。然后进行再进行步骤S303，对正常的有机电致发光显示面板加载预设电压信号并维持第二预设时长。
作为一个示例，使用图1或者图2所示的老化测试装置的情况下，进行步骤S3021后，异常的有机电致发光显示面板2可能还保持着与信号发生器1的电耦接。通过步骤S3022，可以确保断开异常的有机电致发光显示面板2与信号发生器1的第一信号端11的电耦接，防止对于正常的有机电致发光显示面板2的影响。
图5是本公开的实施例提供的老化测试方法的第三个示例性的流程图。图5中对于图3和图4中的步骤S302做了更详细的描述。如图5所示，作为一个示例，在步骤S302中，检测每个有机电致发光显示面板2的电流是否属于预设范围，以确定是否正常。例如，如果电流过小，则有机电致发光显示面板2内部的电路可能出现断路，如果电流过大，则有机电致发光显示面板2内部的电路可能出现短路。通过检测电流值，可以快速、方便地确定有机电致发光显示面板2是否正常。
图6是本公开的实施例提供的老化测试方法的第四个示例性的流程图。作为另一个示例，图6与图5的区别在于，在步骤S302中，拍摄每个有机电致发光显示面板的显示画面，并将该画面与预设的显示画面进行比较，以确定每个有机电致发光显示面板2是否正常。使用显示画面，能够得到更多的信息，以对于有机电致发光显示面板2的状态进行更准确的判断。显示画面之间的比较可以由测试人员直接完成，也可以由图像处理设备完成。
当然，步骤S302中，确定每个有机电致发光显示面板是否正常的实现方式并非局限于如图5和图6所示的确定方式，还可以为其他类似的确定方式，在此不做限定。
本公开的实施例还提供了一种有机电致发光显示面板，有机电致发光显示面板为利用本公开的实施例提供的上述老化测试方法进行老化测试后的有机电致发光显示面板。该有机电致发光显示面板的实施可以参见上述老化测试方法的实施例，重复之处不再赘述。
本公开的实施例还提供了一种显示装置，包括本公开的实施例提供的上述有机电致发光显示面板，该显示装置可以为：手机、平板电脑、电视机、显示器、笔记本电脑、数码相框、导航仪等任何具有显示功能的产品或部件。该显示装置的实施可以参见上述有机电致发光显示面板的实施例，重复之处不再赘述。
本公开的实施例提供的一种有机电致发光显示面板、老化测试装置、方法及显示装置，一个信号发生器可以同时驱动多个并联的有机电致发光显示面板，以保证老化测试的高效率。此外，在老化测试装置中增加了与各有机电致发光显示面板一一对应的多个开关装置，以电耦接信号发生器和对应的有机电致发光显示面板。因此，可以首先在对各有机电致发光显示面板逐个检测是否异常，然后利用开关将异常的有机电致发光显示面板与信号发生器之间的电耦接断开，之后，再对正常的有机电致发光显示面板进行老化测试。这样，可以在保证老化测试的高效率的前提下，避免异常的有机电致发光显示面板对与其并联的其他有机电致发光显示面板造成 影响。
显然，本领域的技术人员可以对本公开的实施例进行各种改动和变型而不脱离本公开的精神和范围。这样，倘若本公开的实施例的这些修改和变型属于本公开的权利要求及其等同技术的范围之内，则本公开也意图包含这些改动和变型在内。

Claims (11)

  1. 一种有机电致发光显示面板的老化测试装置，包括：
    信号发生器，被配置为向有机电致发光显示面板施加测试所需的信号；
    电耦接装置，其电耦接在所述信号发生器和所述有机电致发光显示面板之间，并且被配置在老化测试过程中，保持正常的有机电致发光显示面板与信号发生器的电耦接，断开异常的有机电致发光显示面板与信号发生器的电耦接。
  2. 根据权利要求1所述的有机电致发光显示面板的老化测试装置，其中，所述电耦接装置包括：多个开关装置；每个开关装置电耦接在所述信号发生器和对应的有机电致发光显示面板之间；所述开关装置被配置为在对应的有机电致发光显示面板异常时断开。
  3. 根据权利要求2所述的有机电致发光显示面板的老化测试装置，其中，所述信号发生器包括第一信号端和第二信号端；所述第一信号端经过所述开关装置与所述有机电致发光显示面板电耦接；所述第二信号端与所述有机电致发光显示面板电耦接。
  4. 根据权利要求3所述的有机电致发光显示面板的老化测试装置，其中，所述开关装置包括薄膜晶体管；所述信号发生器还包括第三信号端；
    所述薄膜晶体管的控制极与所述第三信号端电耦接，第一极与所述第一信号端电耦接，第二极与有机电致发光显示面板电耦接。
  5. 一种有机电致发光显示面板的老化测试方法，使用如权利要求1所述的有机电致发光显示面板的老化测试装置，其中，所述方法包括：
    由信号发生器经过电耦接装置对多个有机电致发光显示面板中的每个施加预设电压信号并维持第一预设时长；
    确定每个所述有机电致发光显示面板是否正常；
    由信号发生器经过电耦接装置对正常的所述有机电致发光显示面板施加预设电压信号并维持第二预设时长。
  6. 根据权利要求5所述的有机电致发光显示面板的老化测试方法，其中，对正常的所述有机电致发光显示面板同时施加预设电压信号并维持第 二预设时长。
  7. 根据权利要求5所述的有机电致发光显示面板的老化测试方法，其中，确定每个所述有机电致发光显示面板是否正常包括：检测每个所述有机电致发光显示面板的电流是否属于预设范围。
  8. 根据权利要求5所述的有机电致发光显示面板的老化测试方法，其中，确定每个所述有机电致发光显示面板是否正常包括：拍摄每个所述有机电致发光显示面板的显示画面，并与预设的显示画面进行比较。
  9. 如权利要求5-8任一项所述的有机电致发光显示面板的老化测试方法，其中，所述第一预设时长小于所述第二预设时长。
  10. 一种有机电致发光显示面板，利用如权利要求5-9任一项所述的老化测试方法进行老化测试。
  11. 一种显示装置，包括：如权利要求10所述的有机电致发光显示面板。
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