WO2015096337A1 - 阵列基板和显示装置 - Google Patents

阵列基板和显示装置 Download PDF

Info

Publication number
WO2015096337A1
WO2015096337A1 PCT/CN2014/076466 CN2014076466W WO2015096337A1 WO 2015096337 A1 WO2015096337 A1 WO 2015096337A1 CN 2014076466 W CN2014076466 W CN 2014076466W WO 2015096337 A1 WO2015096337 A1 WO 2015096337A1
Authority
WO
WIPO (PCT)
Prior art keywords
circuit
pixel
current
display
test
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/CN2014/076466
Other languages
English (en)
French (fr)
Inventor
田栋协
柳奉烈
安星俊
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BOE Technology Group Co Ltd
Ordos Yuansheng Optoelectronics Co Ltd
Original Assignee
BOE Technology Group Co Ltd
Ordos Yuansheng Optoelectronics Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by BOE Technology Group Co Ltd, Ordos Yuansheng Optoelectronics Co Ltd filed Critical BOE Technology Group Co Ltd
Priority to US14/420,795 priority Critical patent/US9898964B2/en
Publication of WO2015096337A1 publication Critical patent/WO2015096337A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • G09G3/006—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
    • G09G3/2003—Display of colours
    • 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
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2310/00—Command of the display device
    • G09G2310/08—Details of timing specific for flat panels, other than clock recovery
    • 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
    • G09G2320/02—Improving the quality of display appearance
    • G09G2320/0242—Compensation of deficiencies in the appearance of colours
    • 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
    • G09G2320/02—Improving the quality of display appearance
    • G09G2320/0257—Reduction of after-image effects
    • 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
    • G09G2320/00—Control of display operating conditions
    • G09G2320/04—Maintaining the quality of display appearance
    • G09G2320/043—Preventing or counteracting the effects of ageing
    • G09G2320/045—Compensation of drifts in the characteristics of light emitting or modulating 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
    • G09G2330/00—Aspects of power supply; Aspects of display protection and defect management
    • G09G2330/12—Test circuits or failure detection circuits included in a display system, as permanent part thereof
    • 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
    • H10K59/13—Active-matrix OLED [AMOLED] displays comprising photosensors that control luminance

Definitions

  • the present invention relates to the field of display technologies, and in particular, to an array substrate and a display device. Background technique
  • AMOLED Active Matrix Organic Light Emitting Diode
  • TFT thin film transistor
  • OLED organic light emitting diode
  • an AMOLED display there are a plurality of pixel units distributed in a matrix, each of which includes a red display pixel, a green display pixel, and a blue display pixel, and each display pixel is provided with an organic light emitting element such as an OLED.
  • the performance of organic light-emitting elements such as OLEDs affects the display brightness of display pixels. Since an organic light-emitting element such as an OLED may change in performance due to environmental influences, the luminance of the organic light-emitting element whose performance is changed may be lowered, thereby affecting the normal display, and thus the time-out use may cause degradation of a specific pixel. Over time, degraded pixels persist, causing image sticking in the heavily degraded pixel area, which in turn reduces the lifetime of the AMOLED display. Summary of the invention
  • An array substrate and a display device are provided in an embodiment of the present invention to improve pixel degradation in a self-luminous display device.
  • an array substrate comprising a voltage driving circuit for driving display pixels to display an image, and a current sensing circuit, further comprising the same as the display pixel a test pixel of the initial parameter performance, a current comparison circuit, and a voltage compensation circuit, wherein the test pixel is connected to the current sensing circuit, and the current comparison circuit is connected to the current sensing circuit and the voltage compensation circuit;
  • the current comparison circuit is configured to compare a current value of a current flowing through the test pixel sensed by the current sensing circuit with a set threshold, and output the comparison result to the voltage compensation circuit;
  • the voltage compensation circuit is configured to compensate a driving voltage of the voltage driving circuit when the current value is less than the set threshold.
  • the test pixel, the current comparison circuit and the voltage compensation circuit are included, and the current value flowing through the test pixel is compared with the set standard threshold by the current comparison circuit, when flowing through the test pixel
  • the voltage compensation circuit can compensate the driving voltage of the voltage driving circuit, thereby compensating for the current flowing through the display pixel, thereby avoiding degradation of a specific pixel, thereby preventing the occurrence of image sticking.
  • the test pixel includes a red test pixel, a green test pixel, and a blue test pixel to detect a current value of the test pixel of each color to implement compensation for the display pixel of each color.
  • the test pixel is a red display pixel, a green display pixel, and a blue display pixel in one pixel unit, and the current is directly detected by using the display pixel as a test pixel, thereby simplifying the process.
  • test pixels are disposed in the non-display area to avoid affecting the normal display of the array substrate.
  • the test pixel can be disposed in the display area, and when the original display pixel is directly used as the test pixel, the circuit design is simplified.
  • the current comparison circuit in the embodiment of the present invention includes a comparator respectively connected to the red test pixel, the green test pixel, and the blue test pixel, where
  • the positive input end of the comparator is connected to the red test pixel, the green test pixel or the blue test pixel, and the negative input terminal is connected to the reference voltage.
  • the circuit is simple to implement by comparing the currents through the comparator.
  • the test pixels of each color are respectively connected with a comparator, which can respectively detect and compensate the red display pixel, the green display pixel and the blue display pixel, thereby avoiding the phenomenon of image sticking caused by degradation of the display pixel of one color. occur.
  • the embodiment of the present invention further includes: a timer connected to the current comparison circuit, where
  • the timer is for setting a period, and the current comparison circuit compares the current value with the set threshold value during a set period.
  • the current comparison circuit compares the current value with the set threshold value within a set period, thereby saving resources, avoiding insufficient power supply, and affecting display effects.
  • the voltage compensation circuit is connected to the gamma reference circuit, and the voltage adjustment is more accurate and feasible by adjusting the gamma reference.
  • a display device comprising the array substrate as described above.
  • the array substrate in the display device provided by the embodiment of the invention includes a test pixel, a current comparison circuit and a voltage compensation circuit, and compares the current value flowing through the test pixel with the set standard threshold by the current comparison circuit, when flowing through When the current value of the test pixel is less than the set threshold, the voltage compensation circuit can compensate the driving voltage of the voltage driving circuit, thereby compensating for the current flowing through the display pixel, thereby avoiding degradation of a specific pixel, thereby avoiding image sticking. happened.
  • FIG. 1 is a schematic structural view of an array substrate provided in an embodiment of the present invention.
  • FIG. 2 is a schematic circuit diagram of detecting and compensating for each color display pixel according to an embodiment of the present invention
  • FIG. 3 is a schematic diagram showing another configuration of an array substrate according to an embodiment of the present invention
  • FIG. 4 is a schematic diagram of a voltage compensation process according to an embodiment of the present invention. detailed description
  • the current flowing through the display pixel organic light-emitting element has a predetermined relationship with the material characteristics (e.g., temperature characteristics) of the display pixel, and is generally proportional.
  • a more common driving method is a voltage driving method.
  • the voltage driving circuit provides a voltage signal representing the gray scale, which is converted into a current signal of the driving tube inside the pixel circuit, that is, to convert the driving voltage into a specific driving current.
  • the driving current flows through the organic light emitting elements in the display pixels to cause them to emit light, thereby causing the display pixels to perform image display.
  • a pixel When a pixel degenerates, it generally reflects a change in temperature characteristics, and the temperature of the pixel is proportional to the current flowing through the display pixel. When the current is lower than the specific current required, heating occurs.
  • a current sensing circuit In order to monitor the current flowing through the display pixels, a current sensing circuit is disposed in the array substrate, and a current flowing through the display pixels is detected by the current sensing circuit. The main function of the current sensing circuit is to convert the output or input current into a voltage signal to be transmitted to The processing module is further processed.
  • whether the current pixel is a degraded pixel can be determined by detecting the magnitude of the current flowing through the display pixel.
  • the current can be compensated by compensating the driving voltage to avoid pixel degradation.
  • FIG. 1 is a schematic view showing the structure of an array substrate provided in an embodiment of the present invention.
  • the array substrate includes a voltage driving circuit 1, a current sensing circuit 2, a test pixel 3 having the same initial parameter performance as the display pixel, a current comparison circuit 4, and a voltage compensation circuit 5.
  • the voltage driving circuit 1 is for driving the display pixel to display an image.
  • the current sensing circuit 2 is connected to the test pixel for determining the current flowing through the test pixel 3.
  • the current sensing circuit 2 is also connected to the current comparison circuit 4, and outputs the sensed current flowing through the test pixel 3 to the current comparison circuit 4, and the current comparison circuit 4 senses the current flowing through the test pixel 3 sensed by the current sensing circuit 2.
  • the current value is compared with the set threshold, and the comparison result is output to the voltage compensation circuit 5 connected thereto.
  • the voltage compensation circuit 5 is for compensating for the driving voltage of the voltage driving circuit 1 for displaying an image of the driving display pixel when the current value is smaller than the set threshold.
  • the set threshold value compared with the current value of the current flowing through the test pixel 3 is a corresponding current value reflecting the temperature characteristic of the display pixel reference material, and the reflected current value corresponding to the temperature characteristic of the pixel reference material is displayed.
  • the display pixel is completed, it is a fixed current value.
  • the current value of the test pixel sensed by the sensing circuit is compared with the set threshold.
  • the display pixel is a degraded pixel and needs to be compensated.
  • the driving voltage is compensated.
  • the display pixel is a normal display pixel, and the original driving voltage can be maintained without current compensation.
  • the test pixel 3 includes a red test pixel, a green test pixel, and a blue test pixel, so that display pixels of each color have corresponding test pixels, thereby realizing red display pixels, green display pixels, and blue.
  • the display pixels are separately detected and compensated to avoid the occurrence of image sticking due to degradation of the display pixels of one of the colors.
  • the display pixel can be directly used as the test pixel, and the test pixel need not be separately produced.
  • a red display pixel, a green display pixel, and a blue display pixel in one pixel unit may be used as test pixels.
  • the current sensing circuit 2 directly detects the current in the display pixel, and then compares the current values by the current comparison circuit.
  • the normal display of the display area display pixels is not affected, and the red test pixels, the green test pixels, and the blue having the same performance as the red display pixels, the green display pixels, and the blue display pixels may be separately added.
  • Test the pixels That is, the current value fed back by the test pixel can reflect the current value flowing through the display pixel, and the current value of the separately added test pixel is sensed by the current sensing circuit to compensate the current value of the display pixel.
  • the test pixels separately added and the display pixels are made of the same material and the same process, and the display pixels are completely simulated in operation and function, that is, have the same performance as the display pixels, and are directly used by the current sensing circuit 2
  • the current value of the test pixel separately added is sensed and output to the current comparison circuit.
  • the current comparison circuit compares the current value of the test pixel with a set threshold. If the current value is less than the set threshold, the current display pixel corresponding to the test pixel is a degraded pixel, and current compensation is required.
  • the driving voltage of the voltage driving circuit for driving the display pixel to display the image is compensated by the voltage compensating circuit.
  • the test pixels can be added in any space of the array substrate.
  • the test pixels can be disposed in the non-display area to avoid affecting the normal display of the array substrate.
  • the test pixel in the embodiment of the present invention may be disposed in the display area.
  • the current comparison circuit 4 in the embodiment of the present invention may be a current comparison circuit composed of a comparator, and the current value and the set threshold of the current flowing through the test pixel sensed by the current sensing circuit 2 by the comparator are performed.
  • the circuit is simple to implement. If the result of the comparator comparison is that the current value of the test pixel is not less than the set threshold, the magnitude of the driving voltage is not changed, and the original driving voltage is maintained. If the comparator compares, the current value of the test pixel is less than the setting. For a wide value, a new drive voltage is set to compensate for the drive voltage. Further, as shown in FIG.
  • the current comparison circuit in the embodiment of the present invention may include a comparator connected to the red test pixel, the green test pixel, and the blue test pixel, respectively.
  • the test pixels of each color in FIG. 2 are respectively connected to a comparator, and the positive input ends of the respective comparators are respectively connected with red test pixels, green test pixels or blue test pixels, and the negative input terminals are respectively connected with a reference voltage, and the reference voltage can be respectively It is a fixed value of the original setting, and it can also be the updated driving voltage.
  • the red display pixel, the green display pixel, and the blue display pixel can be separately detected and compensated, thereby avoiding the occurrence of image sticking due to degradation of the display pixel of one of the colors.
  • the embodiment of the present invention can provide a timer 6 connected to the current comparison circuit 4.
  • the timer 6 sets the period so that the current comparison circuit compares the current value flowing through the test pixel with the set threshold value in a set period to save resources, prevent insufficient power supply, and affect the display effect.
  • the period may be set in other manners, for example, by using a reset, re-powering, or the like, which is not limited in this embodiment of the present invention.
  • the compensation circuit in the embodiment of the present invention adjusts the driving voltage
  • the source voltage can be directly adjusted, or can be realized by adjusting the gamma reference voltage.
  • the driving voltage is adjusted by the gamma reference voltage, and the voltage compensating circuit 5 is connected to the gamma reference circuit.
  • a new voltage level is set.
  • updating the pixel gray map LUT Look Up Table
  • adjusting the driving voltage by adjusting the gamma reference voltage output from the gamma reference circuit.
  • the current value is greater than the set threshold, the original voltage level is maintained.
  • the threshold may be further subdivided and a plurality of thresholds are set.
  • the set threshold When the current value exceeds a threshold, change the set threshold to another threshold, hold it for a period of time until it exceeds the other threshold, and then adjust. This allows the current of the display pixel to be more accurately compensated.
  • a Schmitt trigger can be provided in the current comparison circuit of the embodiment of the present invention to detect the error.
  • the Schmitt trigger is capable of shaping a slowly varying input signal into a steep rectangular pulse, and the Schmitt trigger has two threshold voltages, a positive threshold voltage and a negative magnitude voltage, respectively.
  • the voltage transfer characteristic of the Schmitt trigger has a hysteresis region (Hysteresis region) 0 When the error range is specified, the Schmidt trigger circuit can compensate for the defect of the threshold error.
  • the embodiment of the invention further provides a display device comprising any of the array substrates mentioned above.
  • the display device may be: a liquid crystal display panel, an electronic paper, an OLED panel, a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, a navigation device, etc., having any display function.
  • a liquid crystal display panel an electronic paper
  • an OLED panel an organic light-emitting diode
  • a mobile phone a tablet computer
  • a television a display
  • a notebook computer a digital photo frame
  • a navigation device etc.
  • a test pixel In the array substrate of the display device provided by the embodiment of the invention, a test pixel, a current comparison circuit and a voltage compensation circuit may be included, and the current value flowing through the test pixel is compared with the set standard threshold by the current comparison circuit.
  • the voltage compensation circuit can compensate the driving voltage of the voltage driving circuit to compensate the current flowing through the display pixel. Therefore, it is possible to avoid degradation of a specific pixel, and it is possible to avoid the occurrence of image sticking. It is within the spirit and scope of the invention. Therefore, it is intended that the present invention cover the modifications and modifications of the embodiments of the invention.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Electroluminescent Light Sources (AREA)

Abstract

一种阵列基板和显示装置，该阵列基板包括驱动显示像素显示图像的电压驱动电路（1），以及电流感应电路（2），还包括测试像素（3）、电流比较电路（4）和电压补偿电路（5），其中，电流感应电路（2）与测试像素（3）和电流比较电路（4）连接，电流比较电路（4）与电压补偿电路（5）相连接；电流比较电路（4）将电流感应电路（2）感应到的流经测试像素（3）的电流的电流值与设定阈值进行比较，并将比较结果输出至电压补偿电路（5）；电压补偿电路（5）在电流值小于设定阈值时，对电压驱动电路（1）的驱动电压进行补偿。该阵列基板能够对显示像素进行电流补偿，避免像素退化现象发生。

Description

阵列基板和显示装置 技术领域
本发明涉及显示技术领域， 尤其涉及一种阵列基板和显示装置。 背景技术
随着显示技术的发展， 可见度高、 不需要背光源的自发光显示装置越来 越受到人们的关注。
有源矩阵有机发光二极管 （ Active Matrix Organic Light Emitting Diode, AMOLED )作为一种电流型发光器件， 由于能满足显示器高分辨率与大尺寸 的要求， 应用越来越广泛。 AMOLED 能够发光是由薄膜晶体管 （Thin Film Transistor, TFT )在饱和状态时产生驱动电流并驱动有机发光元件， 诸如有 机发光二极管（ Organic Light Emitting Diode ， OLED )发光而实现的。 OLED 具有功耗低、 亮度高、 成本低、 视角广， 以及响应速度快等优点， 因此备受 关注， 在有机发光技术领域得到了广泛的应用。
在 AMOLED显示器中， 包含有若干个按矩阵分布的像素单元， 每个像 素单元内包含有红色显示像素、 绿色显示像素和蓝色显示像素， 每个显示像 素内设置有诸如 OLED的有机发光元件， OLED等有机发光元件的性能影响 显示像素的显示亮度。 由于 OLED等有机发光元件可能会因环境的影响而发 生性能改变， 性能改变的有机发光元件发光亮度会降低， 进而影响正常的显 示， 因此超时使用会使得特定像素出现退化。 随着时间的推移， 退化的像素 一直存在， 使得该退化严重的像素区域出现残影 （Image sticking )现象， 进 而降低了 AMOLED显示器的使用寿命。 发明内容
在本发明的实施例中提供一种阵列基板和显示装置， 以改善自发光显示 装置中的像素退化现象。
按照本发明一个方面， 提供一种阵列基板， 该阵列基板包括驱动显示像 素显示图像的电压驱动电路以及电流感应电路， 还包括与显示像素具有相同 的初始参数性能的测试像素、 电流比较电路和电压补偿电路， 其中， 所述测试像素与所述电流感应电路连接， 所述电流比较电路与所述电流 感应电路和所述电压补偿电路相连接；
所述电流比较电路， 用于将所述电流感应电路感应到的流经所述测试像 素的电流的电流值与设定阔值进行比较， 并将比较结果输出至所述电压补偿 电路；
所述电压补偿电路， 用于在所述电流值小于所述设定阔值时， 对所述电 压驱动电路的驱动电压进行补偿。
在本发明实施例提供的阵列基板中， 包括测试像素、 电流比较电路和电 压补偿电路， 通过电流比较电路比较流经测试像素的电流值与设定的标准阔 值的大小， 当流经测试像素的电流值小于设定阔值时， 电压补偿电路能够对 电压驱动电路的驱动电压进行补偿， 从而达到对流经显示像素的电流进行补 偿， 因此能够避免特定像素退化， 进而能够避免残影现象的发生。
可选地， 本发明实施例中测试像素包括红色测试像素、 绿色测试像素和 蓝色测试像素， 以检测每种颜色的测试像素的电流值， 实现对每种颜色的显 示像素的补偿。
可选地， 本发明实施例中测试像素为一个像素单元中的红色显示像素、 绿色显示像素和蓝色显示像素， 通过显示像素直接作为测试像素进行电流的 检测， 简化工艺。
可选地， 本发明实施例中测试像素设置于非显示区域， 以避免影响阵列 基板的正常显示。
可选地， 本发明实施例中测试像素可设置于显示区域， 利用原有的显示 像素直接作为测试像素时， 简化电路设计。
可选地， 本发明实施例中电流比较电路包括与所述红色测试像素、 所述 绿色测试像素和所述蓝色测试像素分别连接的比较器， 其中，
所述比较器的正输入端连接所述红色测试像素、 所述绿色测试像素或所 述蓝色测试像素， 负输入端连接基准电压。
通过比较器进行电流的比较， 电路实现简单。 每一种颜色的测试像素分 别连接有比较器， 能够实现对红色显示像素、 绿色显示像素和蓝色显示像素 分别进行检测补偿， 避免因为其中一种颜色的显示像素发生退化， 造成残影 现象的发生。 可选地， 本发明实施例中还包括： 与所述电流比较电路相连接的计时 器， 其中，
所述计时器用于设定周期， 使所述电流比较电路在设定周期内对所述电 流值与所述设定阔值进行比较。
通过设置定时器， 使所述电流比较电路在设定周期内对所述电流值与所 述设定阔值进行比较， 能够节约资源， 避免供电不足， 影响显示效果。
可选地， 所述电压补偿电路与伽马基准电路相连接， 通过调整伽马基准 使电压调整更为精确可行。
按照本发明的另一方面， 还提供一种显示装置， 该显示装置包括上述涉 及的阵列基板。
本发明实施例提供的显示装置中的阵列基板， 包括测试像素、 电流比较 电路和电压补偿电路， 通过电流比较电路比较流经测试像素的电流值与设定 的标准阔值的大小， 当流经测试像素的电流值小于设定阔值时， 电压补偿电 路能够对电压驱动电路的驱动电压进行补偿， 从而达到对流经显示像素的电 流进行补偿， 因此能够避免特定像素退化， 进而能够避免残影现象的发生。 附图说明
图 1为本发明实施例中提供的阵列基板构成示意图；
图 2为本发明实施例中对各颜色显示像素进行检测补偿的电路示意图； 图 3为本发明实施例中提供的又一阵列基板构成示意图；
图 4为本发明实施例电压补偿过程示意图。 具体实施方式
下面将结合附图， 对本发明实施例的技术方案进行清楚、 完整地描述。 显然， 所描述的实施例仅仅是本发明一部分实施例， 并不是全部的实施例。 基于本发明的实施例， 本领域普通技术人员在没有做出创造性劳动前提下所 获得的所有其他实施例， 都属于本发明保护的范围。
自发光显示装置中， 流经显示像素有机发光元件的电流与显示像素的材 料特性 (例如温度特性 )具有预定的关系， 一般是成比例的。 自发光显示装 置中显示像素进行图像显示时， 比较常用的驱动方式是釆用电压驱动方式。 电压驱动电路提供一个表示灰阶的电压信号， 该电压信号会在像素电路内部 被转化为驱动管的电流信号， 即， 实现将驱动电压转换为特定的驱动电流。 驱动电流流经显示像素中的有机发光元件使其发光， 进而使得显示像素进行 图像显示。
当像素发生退化时， 一般体现为温度特性的变化， 而像素的温度与显示 像素内流经的电流呈比例， 当电流低于所需的特定电流时， 则会发生热化。 为了监测流经显示像素的电流大小， 阵列基板中会设置电流感应电路， 通过 电流感应电路检测流经显示像素的电流， 电流感应电路的主要功能是将输出 或输入的电流转换为电压信号传送给处理模块做进一步处理。
本发明实施例中可通过检测流经显示像素的电流的大小， 确定当前像素 是否为退化像素。 在当前像素为退化像素时， 则可通过补偿驱动电压， 对其 电流进行补偿， 从而避免像素退化。
图 1所示为本发明实施例中提供的阵列基板的构成示意图。如图 1所示， 该阵列基板包括电压驱动电路 1、 电流感应电路 2、 与显示像素具有相同的初 始参数性能的测试像素 3、 电流比较电路 4和电压补偿电路 5。
电压驱动电路 1用于驱动显示像素显示图像。 电流感应电路 2与测试像 素连接， 用于确定流经测试像素 3的电流。 电流感应电路 2还与电流比较电 路 4连接， 将感应到的流经测试像素 3的电流输出至电流比较电路 4， 电流 比较电路 4将电流感应电路 2感应到的流经测试像素 3的电流的电流值与设 定阔值进行比较， 将比较结果输出至与其连接的电压补偿电路 5。 电压补偿 电路 5用于在电流值小于设定阔值时， 对驱动显示像素进行图像显示的电压 驱动电路 1的驱动电压进行补偿。
本发明实施例中与流经测试像素 3的电流的电流值进行比较的设定阔值 是反映显示像素基准材料温度特性的对应的电流值， 该反映显示像素基准材 料温度特性的对应的电流值在将显示像素制作完成后， 为一固定的电流值。 将感应电路感应到的测试像素的电流值与该设定阔值进行比较。 当电流值小 于设定阔值时， 则说明该显示像素为退化像素， 需要进行补偿， 此时对驱动 电压进行补偿。 当电流值大于设定阔值时， 则说明该显示像素为正常的显示 像素， 无需进行电流补偿， 则可保持原有的驱动电压。
由于制作像素单元内的红色显示像素、 绿色显示像素和蓝色显示像素的 材料特性各不相同， 所以每种颜色的显示像素的退化程度也可能不一样。 本 发明实施例中测试像素 3包括红色测试像素、绿色测试像素和蓝色测试像素， 使得每一种颜色的显示像素都有对应的测试像素， 进而可实现对红色显示像 素、 绿色显示像素和蓝色显示像素分别进行检测补偿， 避免因为其中一种颜 色的显示像素发生退化， 造成残影现象的发生。
本发明实施例中可直接将显示像素作为测试像素， 无需单独制作测试像 素。 可替换地， 本发明实施例中可将一个像素单元中的红色显示像素、 绿色 显示像素和蓝色显示像素作为测试像素。 电流感应电路 2直接通过检测显示 像素中的电流， 然后由电流比较电路进行电流值的比较。
可替换地， 本发明实施例中为不影响显示区域显示像素的正常显示， 可 单独追加与红色显示像素、 绿色显示像素和蓝色显示像素具有相同性能的红 色测试像素、 绿色测试像素和蓝色测试像素。 亦即， 测试像素反馈的电流值 即可反应流经显示像素的电流值， 通过电流感应电路感应单独追加的测试像 素的电流值， 对显示像素的电流值进行补偿。
本发明实施例中单独追加的测试像素与显示像素釆用相同的材料以及相 同工艺制作， 在运行上以及功能上完全模拟显示像素， 即具有与显示像素相 同的性能， 并由电流感应电路 2直接感应单独追加的测试像素的电流值输出 至电流比较电路。电流比较电路将该测试像素的电流值与设定阔值进行比较。 若电流值小于设定阔值， 则说明与该测试像素对应的当前显示像素为退化像 素， 需要进行电流补偿。 由电压补偿电路对驱动显示像素进行图像显示的电 压驱动电路的驱动电压进行补偿。
进一步地， 本发明实施例中测试像素可以在阵列基板的任意空间内追 加， 当然本发明实施例中可将测试像素设置于非显示区域， 以避免其对阵列 基板的正常显示造成影响。 可选地， 本发明实施例中测试像素可设置于显示 区域。 当利用原有的显示像素直接作为测试像素时， 无需设置过长的外围引 线， 从而简化电路设计。
进一步地， 本发明实施例中的电流比较电路 4可以是由比较器构成的电 流比较电路， 通过比较器对电流感应电路 2感应到的流经测试像素的电流的 电流值与设定阔值进行比较， 电路实现简单。 若比较器比较的结果为测试像 素的电流值不小于设定阔值， 则不改变驱动电压的大小， 保持原有驱动电压 的大小， 若比较器比较的结果为测试像素的电流值小于设定阔值， 则设置新 的驱动电压， 对驱动电压进行补偿。 进一步地， 如图 2所示， 本发明实施例中电流比较电路中可包括与红色 测试像素、 绿色测试像素和蓝色测试像素分别连接的比较器。 图 2中每一种 颜色的测试像素分别连接一比较器， 各个比较器的正输入端分别连接红色测 试像素、 绿色测试像素或蓝色测试像素， 负输入端分别连接基准电压， 该基 准电压可以是原有设定的固定值， 也可以是更新后的驱动电压。 通过图 2所 示的电路结构， 可实现对红色显示像素、 绿色显示像素和蓝色显示像素分别 进行检测补偿， 避免因为其中一种颜色的显示像素发生退化， 造成残影现象 的发生。
可替换地， 如图 3所示， 本发明实施例可设置一与电流比较电路 4相连 接的计时器 6。 通过该计时器 6设定周期， 使电流比较电路在设定的周期内 对流经测试像素的电流值与设定阔值进行比较， 以节省资源， 防止供电不足， 影响显示效果。
需要说明的是， 本发明实施例也可通过其它方式设定周期， 例如釆用复 位， 重新上电等方式， 对此本发明实施例不做限定。
进一步地， 本发明实施例中的补偿电路对驱动电压进行调整时， 可以直 接调整源电压， 也可通过调整伽马基准电压来实现。
如图 4所示， 本实施例中通过伽马基准电压对驱动电压进行调整， 电压 补偿电路 5与伽马基准电路相连接， 当电流值比设定阔值小时， 则设置新的 电压电平， 更新像素灰度映射表 LUT ( Look Up Table ), 通过调整伽马基准 电路输出的伽马基准电压达到调整驱动电压的目的。 当电流值比设定阔值大 时， 则保持原有电压电平。
可替换地， 本发明实施例中可将阔值进一步细分化， 设定多个阔值。 当 电流值超过一个阔值时， 则改变设定的阔值为另一个阔值， 保持一段时间直 至超过另一个阔值， 再进行调整。 这可以使得显示像素的电流得到更精确的 补偿。
在本发明实施例中， 当釆用多个设定阔值时， 因为输入电压可能存在漂 移以及环境温度影响， 使得流经显示像素的电流并不会发生明显的变化， 但 是可能出现阔值设定误差。 故在本发明实施例的电流比较电路中可设置施密 特触发器以检测该误差。 施密特触发器能够把变化緩慢的输入信号整形成边 沿陡峭的矩形脉冲， 并且施密特触发器具有两个阔值电压， 分别为正向阔值 电压和负向阔值电压。 施密特触发器的电压传输特性曲线具有一滞后区域 ( Hysteresis region )0 当规定了误差范围时， 利用施密特触发器电路， 则能够 弥补阔值误差的缺陷。
本发明实施例还提供了一种显示装置， 该显示装置包括上述涉及的任意 一种阵列基板。
需要说明的是， 本发明实施例涉及的显示装置可以为： 液晶显示面板、 电子纸、 OLED 面板、 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。
在本发明实施例提供的显示装置的阵列基板中， 可包括测试像素、 电流 比较电路和电压补偿电路， 通过电流比较电路比较流经测试像素的电流值与 设定的标准阔值的大小。 当流经测试像素的电流值小于设定阔值时， 电压补 偿电路能够对电压驱动电路的驱动电压进行补偿， 从而达到对流经显示像素 的电流进行补偿的目的。 因此， 能够避免特定像素退化， 进而能够避免残影 现象的发生。 脱离本发明的精神和范围。 这样， 倘若对本发明实施例的这些修改和变型属 于本发明权利要求及其等同技术的范围之内， 则本发明也意图包含这些修改 和变型在内。

Claims

权 利 要 求 书
1、 一种阵列基板， 包括：
驱动显示像素显示图像的电压驱动电路；
电¾1感应电路；
与显示像素具有相同的初始参数性能的测试像素；
电流比较电路； 和
电压补偿电路， 其中，
所述电流感应电路与所述测试像素和所述电流比较电路连接， 所述电流 比较电路与所述电压补偿电路相连接；
所述电流比较电路将所述电流感应电路感应到的流经所述测试像素的电 流的电流值与设定阔值进行比较， 并将比较结果输出至所述电压补偿电路； 所述电压补偿电路在所述电流值小于所述设定阔值时， 对所述电压驱动 电路的驱动电压进行补偿。
2、 如权利要求 1所述的阵列基板， 其中， 所述测试像素包括红色测试像 素、 绿色测试像素和蓝色测试像素。
3、 如权利要求 2所述的阵列基板， 其中， 所述测试像素为一个像素单元 中的红色显示像素、 绿色显示像素和蓝色显示像素。
4、 如权利要求 2所述的阵列基板， 其中， 所述测试像素设置于非显示区 域。
5、 如权利要求 2 所述的阵列基板， 其中， 所述测试像素设置于显示区 域。
6、 如权利要求 2所述的阵列基板， 其中， 所述电流比较电路包括与所述 红色测试像素、 所述绿色测试像素和所述蓝色测试像素分别连接的比较器， 其中，
所述比较器中的每一个的正输入端分别连接所述红色测试像素、 所述绿 色测试像素以及所述蓝色测试像素， 负输入端连接基准电压。
7、 如权利要求 1所述的阵列基板， 其中， 还包括： 与所述电流比较电路 相连接的计时器， 其中，
所述计时器用于设定周期， 使所述电流比较电路在设定周期内对所述电 流值与所述设定阔值进行比较。
8、 如权利要求 1所述的阵列基板， 其中， 所述电压补偿电路与伽马基准 电路相连接， 通过调整伽马基准电路输出的伽马基准电压对驱动所述电压驱 动电路的驱动电压进行补偿。
9、 一种显示装置， 包括权利要求 1-8任一项所述的阵列基板。
PCT/CN2014/076466 2013-12-27 2014-04-29 阵列基板和显示装置 Ceased WO2015096337A1 (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US14/420,795 US9898964B2 (en) 2013-12-27 2014-04-29 Array substrate and display apparatus

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201310741942.0A CN103681772B (zh) 2013-12-27 2013-12-27 一种阵列基板和显示装置
CN201310741942.0 2013-12-27

Publications (1)

Publication Number Publication Date
WO2015096337A1 true WO2015096337A1 (zh) 2015-07-02

Family

ID=50318748

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2014/076466 Ceased WO2015096337A1 (zh) 2013-12-27 2014-04-29 阵列基板和显示装置

Country Status (3)

Country Link
US (1) US9898964B2 (zh)
CN (1) CN103681772B (zh)
WO (1) WO2015096337A1 (zh)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109949730A (zh) * 2019-04-30 2019-06-28 昆山国显光电有限公司 一种显示面板及其残影测试装置和方法
CN114863852A (zh) * 2022-05-25 2022-08-05 维沃移动通信有限公司 显示面板、电子设备和电子设备的显示校准方法

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103681772B (zh) * 2013-12-27 2018-09-11 京东方科技集团股份有限公司 一种阵列基板和显示装置
US10644950B2 (en) * 2014-09-25 2020-05-05 At&T Intellectual Property I, L.P. Dynamic policy based software defined network mechanism
US9728125B2 (en) 2014-12-22 2017-08-08 Shenzhen China Star Optoelectronics Technology Co., Ltd AMOLED pixel circuit
CN104517572B (zh) * 2014-12-22 2017-05-03 深圳市华星光电技术有限公司 Amoled像素电路
CN105047137B (zh) * 2015-09-09 2017-05-31 深圳市华星光电技术有限公司 Amoled实时补偿系统
CN106875883B (zh) * 2016-12-28 2021-01-08 深圳天珑无线科技有限公司 一种控制显示面板显示的方法及系统
CN108305576B (zh) * 2017-01-13 2021-11-30 元太科技工业股份有限公司 显示装置
CN107025884B (zh) * 2017-05-04 2019-10-11 京东方科技集团股份有限公司 Oled像素补偿方法、补偿装置及显示装置
KR102412676B1 (ko) * 2017-11-16 2022-06-24 삼성디스플레이 주식회사 유기 발광 표시 장치 및 이의 구동 방법
CN108281102A (zh) * 2018-01-31 2018-07-13 京东方科技集团股份有限公司 Amoled显示装置的检测装置及方法、修复装置及方法、修复系统
US10984713B1 (en) * 2018-05-10 2021-04-20 Apple Inc. External compensation for LTPO pixel for OLED display
US11308883B2 (en) * 2018-09-26 2022-04-19 Hewlett-Packard Development Company, L.P. Temperature based OLED sub-pixel luminosity correction
CN109166517B (zh) * 2018-09-28 2020-06-09 京东方科技集团股份有限公司 像素补偿电路以补偿方法、像素电路、显示面板
CN109473053B (zh) * 2018-11-08 2020-09-04 惠科股份有限公司 显示面板老化处理的电路和显示面板
WO2020181422A1 (zh) * 2019-03-08 2020-09-17 深圳市柔宇科技有限公司 面板组件及电子装置
CN110570820B (zh) * 2019-08-06 2020-10-16 深圳市华星光电技术有限公司 Amoled显示装置及其驱动方法
US12142207B2 (en) 2020-03-31 2024-11-12 Apple, Inc. Configurable pixel uniformity compensation for OLED display non-uniformity compensation based on scaling factors
CN111599308B (zh) * 2020-06-28 2021-11-02 上海天马有机发光显示技术有限公司 显示装置及其控制方法、电子设备
CN112466767B (zh) * 2020-11-10 2023-10-31 海光信息技术股份有限公司 一种集成电路的老化补偿方法、集成电路
US12288525B2 (en) 2023-01-16 2025-04-29 Hefei Boe Joint Technology Co., Ltd. Method of processing data, electronic device, and storage medium

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1369916A (zh) * 2001-01-29 2002-09-18 株式会社半导体能源研究所 发光器件
CN1732497A (zh) * 2002-11-21 2006-02-08 佳能株式会社 用于像素测试的系统、设备和方法
KR20070013092A (ko) * 2005-07-25 2007-01-30 삼성에스디아이 주식회사 전자방출표시장치 및 그의 구동방법
US20090027375A1 (en) * 2007-07-27 2009-01-29 Do-Hyung Ryu Power source, display including the same, and associated method
CN101359440A (zh) * 2007-07-31 2009-02-04 奇美电子股份有限公司 改善阈值电压偏移的补偿电路及其方法
US20100277513A1 (en) * 2009-04-29 2010-11-04 Seungchan Byun Organic light emitting diode display and driving method
CN103681772A (zh) * 2013-12-27 2014-03-26 京东方科技集团股份有限公司 一种阵列基板和显示装置

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5021884B2 (ja) 2003-08-06 2012-09-12 日本電気株式会社 表示駆動回路及びそれを用いた表示装置
JP4804711B2 (ja) 2003-11-21 2011-11-02 株式会社 日立ディスプレイズ 画像表示装置
JP5240538B2 (ja) * 2006-11-15 2013-07-17 カシオ計算機株式会社 表示駆動装置及びその駆動方法、並びに、表示装置及びその駆動方法
JP2009031711A (ja) * 2007-07-27 2009-02-12 Samsung Sdi Co Ltd 有機電界発光表示装置及びその駆動方法
JP4640507B2 (ja) * 2009-01-06 2011-03-02 ソニー株式会社 固体撮像装置、固体撮像装置の信号処理方法、および撮像装置
US8354983B2 (en) * 2010-02-19 2013-01-15 National Cheng Kung University Display and compensation circuit therefor
KR101470688B1 (ko) * 2011-12-08 2014-12-08 엘지디스플레이 주식회사 유기발광 표시장치 및 그의 열화보상방법
US8922544B2 (en) * 2012-05-23 2014-12-30 Ignis Innovation Inc. Display systems with compensation for line propagation delay
US20140002332A1 (en) * 2012-06-29 2014-01-02 Taiwan Semiconductor Manufacturing Company, Ltd. Pixels for display
KR102270460B1 (ko) * 2014-09-19 2021-06-29 삼성디스플레이 주식회사 유기 발광 표시 장치 및 이의 열화 보상 방법
KR102313360B1 (ko) * 2014-11-10 2021-10-18 삼성디스플레이 주식회사 유기발광표시장치 및 그 구동방법

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1369916A (zh) * 2001-01-29 2002-09-18 株式会社半导体能源研究所 发光器件
CN1732497A (zh) * 2002-11-21 2006-02-08 佳能株式会社 用于像素测试的系统、设备和方法
KR20070013092A (ko) * 2005-07-25 2007-01-30 삼성에스디아이 주식회사 전자방출표시장치 및 그의 구동방법
US20090027375A1 (en) * 2007-07-27 2009-01-29 Do-Hyung Ryu Power source, display including the same, and associated method
CN101359440A (zh) * 2007-07-31 2009-02-04 奇美电子股份有限公司 改善阈值电压偏移的补偿电路及其方法
US20100277513A1 (en) * 2009-04-29 2010-11-04 Seungchan Byun Organic light emitting diode display and driving method
CN103681772A (zh) * 2013-12-27 2014-03-26 京东方科技集团股份有限公司 一种阵列基板和显示装置

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109949730A (zh) * 2019-04-30 2019-06-28 昆山国显光电有限公司 一种显示面板及其残影测试装置和方法
CN109949730B (zh) * 2019-04-30 2022-07-12 昆山国显光电有限公司 一种显示面板及其残影测试装置和方法
CN114863852A (zh) * 2022-05-25 2022-08-05 维沃移动通信有限公司 显示面板、电子设备和电子设备的显示校准方法

Also Published As

Publication number Publication date
US20160035281A1 (en) 2016-02-04
US9898964B2 (en) 2018-02-20
CN103681772A (zh) 2014-03-26
CN103681772B (zh) 2018-09-11

Similar Documents

Publication Publication Date Title
WO2015096337A1 (zh) 阵列基板和显示装置
CN107785406B (zh) 一种有机电致发光显示面板及其驱动方法、显示装置
CN110767136B (zh) 显示面板的亮度校正方法、显示面板的亮度校正装置及显示装置
CN104064141B (zh) 显示面板光学补偿装置、显示面板和光学补偿方法
CN101675466B (zh) 显示装置、显示控制方法以及电子设备
CN109215581B (zh) 一种显示面板的补偿方法、补偿装置及显示装置
CN106816137B (zh) 显示装置及增加该显示装置亮度均一性的方法
CN110444152A (zh) 光学补偿方法及装置、显示装置、显示方法及存储介质
WO2020119712A1 (zh) 显示装置的补偿方法、装置和显示设备
CN105976756A (zh) 电源芯片及显示装置
WO2018133246A1 (zh) 一种显示模块驱动装置及方法
CN108877686A (zh) 数据补偿方法及装置、显示驱动方法及装置、显示装置
US20170039946A1 (en) Oled display device and method for corecting image sticking of oled display device
CN107591127A (zh) 像素电路、阵列基板、有机电致发光显示面板及显示装置
TW201631567A (zh) 顯示裝置及其操作方法
CN105702207A (zh) 防止关机时显示面板的画面残影的驱动方法及显示装置
CN107195270B (zh) 显示面板的亮度补偿方法及装置
TWI482135B (zh) 顯示裝置及其影像控制方法
CN110111724A (zh) 一种显示面板、其驱动方法及显示装置
CN107256693A (zh) 显示方法、显示面板和显示装置
WO2017045366A1 (zh) 自发光显示器和自发光显示器显示方法
CN101443839A (zh) 显示装置和电子装置
CN101968947A (zh) 显示器系统及其消除显示器亮度不均匀的方法
CN106531078A (zh) 一种像素单元的补偿方法
US10217398B2 (en) Temperature sensing module for display device and related temperature sensing method and display device

Legal Events

Date Code Title Description
WWE Wipo information: entry into national phase

Ref document number: 14420795

Country of ref document: US

121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 14873504

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

32PN Ep: public notification in the ep bulletin as address of the adressee cannot be established

Free format text: NOTING OF LOSS OF RIGHTS PURSUANT TO RULE 112(1) EPC (EPO FORM 1205A DATED 02/12/2016)

122 Ep: pct application non-entry in european phase

Ref document number: 14873504

Country of ref document: EP

Kind code of ref document: A1