WO2019237553A1 - Oled面板温度补偿系统及oled面板温度补偿方法 - Google Patents

Oled面板温度补偿系统及oled面板温度补偿方法 Download PDF

Info

Publication number
WO2019237553A1
WO2019237553A1 PCT/CN2018/106613 CN2018106613W WO2019237553A1 WO 2019237553 A1 WO2019237553 A1 WO 2019237553A1 CN 2018106613 W CN2018106613 W CN 2018106613W WO 2019237553 A1 WO2019237553 A1 WO 2019237553A1
Authority
WO
WIPO (PCT)
Prior art keywords
temperature
temperature sensor
sub
pixels
pixel
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/CN2018/106613
Other languages
English (en)
French (fr)
Inventor
金羽锋
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.)
Shenzhen China Star Optoelectronics Semiconductor Display Technology Co Ltd
Original Assignee
Shenzhen China Star Optoelectronics Semiconductor Display Technology 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 Shenzhen China Star Optoelectronics Semiconductor Display Technology Co Ltd filed Critical Shenzhen China Star Optoelectronics Semiconductor Display Technology Co Ltd
Priority to US16/300,051 priority Critical patent/US10748478B2/en
Publication of WO2019237553A1 publication Critical patent/WO2019237553A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Images

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
    • 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
    • G09G2320/041—Temperature compensation

Definitions

  • the invention relates to the field of display technology, in particular to an OLED panel temperature compensation system and an OLED panel temperature compensation method.
  • OLED display devices have self-luminous, low driving voltage, high luminous efficiency, short response time, high definition and contrast, near 180 ° viewing angle, wide operating temperature range, flexible display and Many advantages such as large-area full-color display are recognized by the industry as the most promising display devices.
  • OLED display devices can be divided into passive matrix OLED (PMOLED) and active matrix OLED (AMOLED) according to the driving method, namely direct addressing and thin film transistors (Thin Film Transistor, TFT) matrix addressing two types.
  • PMOLED passive matrix OLED
  • AMOLED active matrix OLED
  • TFT thin film transistors
  • AMOLED has pixels arranged in an array, belongs to an active display type, and has high light emitting efficiency, and is generally used as a high-resolution large-sized display device.
  • AMOLED is a current-driven device. When a current flows through the organic light emitting diode, the organic light emitting diode emits light, and the light emission brightness is determined by the current flowing through the organic light emitting diode itself.
  • Most existing integrated circuits Integrated Circuits, ICs only transmit voltage signals, so the pixel driving circuit of AMOLED needs to complete the task of converting voltage signals into current signals.
  • the traditional AMOLED pixel drive circuit is usually 2T1C, that is, the structure of two thin film transistors plus a capacitor, which converts voltage into current.
  • a common OLED display with a temperature compensation function is generally provided with a temperature sensor on a printed circuit board (PCB) bound to an OLED panel through a chip-on-film (COF).
  • PCB printed circuit board
  • COF chip-on-film
  • the temperature sensor is used for temperature detection, and then the OLED panel is For temperature compensation, the temperature detected by the temperature sensor of the OLED display of this structure is the global temperature, and the temperature detection is not accurate, and each area of the OLED panel has a large temperature difference due to different heat dissipation and characteristics.
  • the temperature obtained by setting on the printed circuit board cannot effectively compensate the temperature of the OLED panel.
  • An object of the present invention is to provide a temperature compensation system for an OLED panel, which can accurately and effectively perform temperature compensation for the OLED panel.
  • Another object of the present invention is to provide a temperature compensation method for an OLED panel, which can accurately and effectively perform temperature compensation for the OLED panel.
  • the present invention first provides a temperature compensation system for an OLED panel, including an OLED panel and a processing module electrically connected to the OLED panel;
  • the OLED panel includes a plurality of sub-pixels arranged in an array, and one side of the OLED panel is provided with a temperature sensor layer; or, the OLED panel is provided with a temperature sensor layer parallel to the side of the OLED panel;
  • the temperature sensor layer includes a plurality of temperature sensors arranged at intervals; each temperature sensor is electrically connected to the processing module;
  • the temperature sensor is used to detect the temperature at its location and transmit it to the processing module;
  • the processing module is configured to receive and process the initial data signals of multiple sub-pixels to obtain the brightness to be displayed of the multiple sub-pixels.
  • the processing module receives and processes the temperatures at the locations of the multiple temperature sensors to obtain the temperatures of the multiple sub-pixels.
  • the processing module generates and outputs the compensation data signals of the corresponding multiple sub-pixels according to the brightness to be displayed of the multiple sub-pixels and the temperatures of the multiple sub-pixels.
  • the processing module receives the temperatures at the locations of the multiple temperature sensors and performs processing to obtain the temperatures at the locations of the multiple sub-pixels: setting one of the multiple sub-pixels as the sub-pixel to be measured, and the processing module receiving and The temperatures of the locations of the four temperature sensors adjacent to the sub-pixels to be measured are calculated by bilinear interpolation to obtain the temperatures of the sub-pixels to be measured.
  • the temperature sensor layer includes a plurality of temperature sensors arranged in an array.
  • the first row and first column temperature sensors, the first row and second column temperature sensors, the second row and first column temperature sensors, and the first row of the four temperature sensors in a 2 ⁇ 2 array adjacent to the sub-pixel to be measured are defined.
  • the temperature sensors in the second row and the second column are the first temperature sensor, the second temperature sensor, the third temperature sensor, and the fourth temperature sensor, and the processing module obtains the first temperature sensor, the second temperature sensor, and the third temperature sensor.
  • T [Y2 * (T1 * X2 + T2 * X1) + Y1 * (T3 * X2 + T4 * X1)] / [(X1 + X2) * (Y1 + Y2)];
  • T is the temperature of the sub-pixel to be measured
  • T1 is the temperature at the location of the first temperature sensor
  • T2 is the temperature at the location of the second temperature sensor
  • T3 is the temperature at the location of the third temperature sensor Temperature
  • T4 is the temperature at the location of the fourth temperature sensor
  • X1 is the horizontal distance between the center of the sub-pixel to be measured, the center of the first temperature sensor and the center of the third temperature sensor
  • X2 is the The horizontal distance between the center of the second temperature sensor and the center of the fourth temperature sensor
  • Y1 is the vertical distance between the center of the sub-pixel to be measured and the center of the first temperature sensor and the center of the second temperature sensor
  • Y2 is the distance between the center of the sub-pixel to be measured and The vertical distance between the center of the third temperature sensor and the center of the fourth temperature sensor.
  • the temperature sensor layer includes multiple rows of temperature sensors, and a virtual parallelogram is formed between any four adjacent temperature sensors.
  • first temperature sensor a second temperature sensor
  • third temperature sensor a third temperature sensor
  • fourth temperature sensor the centers of the first temperature sensor and the second temperature sensor are The line is parallel to the center line of the third temperature sensor and the fourth temperature sensor.
  • the center line of the first temperature sensor and the third temperature sensor is parallel to the center line of the second temperature sensor and the fourth temperature sensor.
  • the processing module obtains temperatures at the locations where the first temperature sensor, the second temperature sensor, the third temperature sensor, and the fourth temperature sensor are located, and combines the bilinear difference calculation formula to calculate the temperature of the sub-pixel to be measured;
  • T ' [Y2' * (T1 '* X2' + T2 '* X1') + Y1 '* (T3' * X2 '+ T4' * X1 ')] / [(X1' + X2 ') * (Y1 '+ Y2')];
  • T ′ is the temperature of the sub-pixel to be measured
  • T1 ′ is the temperature at the location of the first temperature sensor
  • T2 ′ is the temperature at the location of the second temperature sensor
  • T3 ′ is the third temperature
  • the temperature at the location of the sensor, T4 ' is the temperature at the location of the fourth temperature sensor
  • X1' is the line connecting the center of the first temperature sensor and the third temperature sensor to the center of the sub-pixel to be measured is parallel to
  • X2 ' is the center line of the second temperature sensor and the fourth temperature sensor and the center of the sub-pixel to be measured
  • X3 ' is the center line between the first temperature sensor and the second temperature sensor and the center of the sub-pixel to be measured is parallel to the first temperature sensor and the first The distance in the direction of the center line of the three temperature sensors, X4 '
  • the distance between adjacent temperature sensors is 3cm-5cm.
  • the specific manner in which the processing module generates the compensation data signals of the corresponding multiple sub-pixels according to the brightness of the multiple sub-pixels and the temperature of the multiple sub-pixels is: the processing module according to the brightness of the multiple sub-pixels, Lookup tables of temperature and preset multiple compensation data voltages corresponding to multiple sub-pixels and driving thin-film transistor threshold voltage differences, temperature and display brightness correlations to obtain corresponding compensation data voltages and driving thin-film transistors of multiple sub-pixels
  • the difference between the threshold voltages of the pixels is calculated by summing the difference between the compensation data voltages and the threshold voltages of the plurality of sub-pixels and the threshold voltages of the driving thin film transistors of the plurality of sub-pixels, to obtain the compensation data voltages of the plurality of sub-pixels.
  • the compensation data voltages of the plurality of sub-pixels generate corresponding compensation data signals of the plurality of sub-pixels.
  • the lookup table corresponding to each sub-pixel includes multiple successively increasing compensation data voltages and driving thin film transistor threshold voltage difference node values, multiple sequentially increasing temperature node values, and multiple display brightness node values; one display The brightness node value corresponds to a combination of a compensation data voltage, a threshold voltage difference threshold value of the driving thin film transistor, and a temperature node value; when the temperature of the sub-pixel is equal to a temperature node value in a corresponding lookup table, the sub-pixel The pixel to be displayed brightness is equal to a display brightness node value in the corresponding look-up table, and the temperature of the sub-pixel corresponds to a combination of a compensation data voltage and a threshold voltage difference node value of the driving thin film transistor in the corresponding look-up table.
  • a compensation data voltage corresponding to the brightness of the sub-pixel and a driving thin film transistor threshold voltage difference node value after combining the temperature with the sub-pixel are used as the sub-pixel's Compensating the difference between the data voltage and the threshold voltage of the driving thin film transistor, otherwise, using the lookup table and the sub-pixels to be displayed Brightness, temperature of the sub-pixels is calculated by interpolation way compensation value data voltage and the voltage difference driving thin film transistor of the sub-pixel threshold.
  • the invention also provides a temperature compensation method for an OLED panel, which is applied to the temperature compensation system of the OLED panel, and includes the following steps:
  • Step S1 the temperature sensor detects the temperature at its location and transmits it to the processing module
  • Step S2 The processing module receives the initial data signals of the multiple sub-pixels and processes them to obtain the brightness to be displayed of the multiple sub-pixels.
  • the processing module receives and processes the temperatures at the locations of the multiple temperature sensors to obtain the multiple sub-pixels. Temperature, the processing module generates and outputs corresponding compensation data signals of a plurality of sub-pixels according to the brightness of the plurality of sub-pixels to be displayed and the temperatures of the plurality of sub-pixels.
  • a temperature compensation system for an OLED panel provided by the present invention includes an OLED panel and a processing module electrically connected to the OLED panel.
  • the OLED panel includes a plurality of sub-pixels arranged in an array, and one side of the OLED panel Or there is a temperature sensor layer including multiple temperature sensors inside. When the OLED panel is temperature compensated, the temperature sensor detects the temperature at its location and transmits it to the processing module.
  • the processing module receives the initial data signals of multiple sub-pixels and performs Processing to obtain the brightness to be displayed of multiple sub-pixels, and to receive and process the temperatures at the locations of multiple temperature sensors to obtain the temperature of multiple sub-pixels, and then generate corresponding values based on the brightness to be displayed of multiple sub-pixels and the temperature of multiple sub-pixels
  • the compensation data signals of multiple sub-pixels are output and can accurately and effectively perform temperature compensation on the OLED panel.
  • the invention provides a temperature compensation method for an OLED panel, which can accurately and effectively perform temperature compensation on the OLED panel.
  • FIG. 1 is a schematic structural diagram of a first embodiment of a temperature compensation system for an OLED panel according to the present invention
  • FIG. 2 is a schematic diagram of obtaining a temperature of a sub-pixel to be measured according to a first embodiment of a temperature compensation system of an OLED panel of the present invention
  • FIG. 3 is a schematic structural diagram of a second embodiment of a temperature compensation system for an OLED panel according to the present invention.
  • FIG. 4 is a schematic diagram of obtaining a temperature of a sub-pixel to be measured according to a second embodiment of a temperature compensation system of an OLED panel according to the present invention
  • FIG. 5 is a flowchart of a temperature compensation method for an OLED panel according to the present invention.
  • a first embodiment of a temperature compensation system for an OLED panel includes an OLED panel 1 and a processing module 2 electrically connected to the OLED panel 1.
  • the OLED panel 1 includes a plurality of sub-pixels arranged in an array.
  • a temperature sensor layer 11 is provided on one side of the OLED panel 1.
  • the temperature sensor layer 11 includes a plurality of temperature sensors 111 arranged at intervals. Each temperature sensor 111 is electrically connected to the processing module 2.
  • the temperature sensor 111 is used to detect the temperature at its location and transmit it to the processing module 2.
  • the processing module 2 is configured to receive initial data signals of a plurality of sub-pixels and perform processing to obtain the brightness to be displayed of the plurality of sub-pixels.
  • the processing module 2 receives and processes the temperatures at the positions of the plurality of temperature sensors 111 to obtain a plurality of sub-pixels.
  • the temperature of the pixel the processing module 2 generates the compensation data signals of the corresponding multiple sub-pixels according to the brightness of the multiple sub-pixels to be displayed and the temperature of the multiple sub-pixels and outputs the compensated data signals.
  • the temperature sensor layer 11 is disposed on a back surface of the OLED panel 1, that is, a non-light emitting surface of the OLED panel.
  • the temperature sensor layer 11 may be a transparent material or an opaque material.
  • the temperature sensor layer 11 may also be disposed in the OLED panel 1 and kept parallel to the side of the OLED panel 1.
  • the existing OLED panel generally includes Substrate, TFT array layer, and OLED device layer.
  • the temperature sensor layer 11 may be disposed on the side of the OLED device layer in the OLED panel 1 away from the substrate.
  • the temperature sensor layer 11 is an opaque material, the temperature sensor layer 11 may also be disposed on a substrate at the same layer as the TFT array layer.
  • the processing module 2 may be a timing controller (TCON).
  • the temperature compensation system of the OLED panel further includes an X board (not shown) bound to the OLED panel 1 through a COF and a C board (not shown) bound to the X board.
  • the timing controller is disposed on the C board In the above, multiple temperature sensors 111 are electrically connected to the X board through the COF, and then are electrically connected to the timing controller on the C board bound to the X board.
  • the temperature sensor layer 11 includes a plurality of temperature sensors 111 arranged in an array.
  • the processing module 2 receives and processes the temperatures at the locations of the multiple temperature sensors 111, and obtains the temperatures at the locations of the multiple sub-pixels in a specific manner: setting one of the multiple sub-pixels as a sub-pixel to be measured, the processing Module 2 receives the temperatures at the positions of the four temperature sensors 111 adjacent to the sub-pixel to be measured, and calculates the temperature of the sub-pixel to be measured by bilinear interpolation.
  • the temperature of the first row, the first column of the temperature sensor 111 and the temperature of the first row and the second column of the four temperature sensors 111 in a 2 ⁇ 2 array adjacent to the sub-pixel a to be measured are defined.
  • the sensor 111, the second row first column temperature sensor 111, and the second row second column temperature sensor 111 are the first temperature sensor A, the second temperature sensor B, the third temperature sensor C, and the fourth temperature sensor D, respectively.
  • the coordinates of the respective centers of the temperature sensor A, the second temperature sensor B, the third temperature sensor C, and the fourth temperature sensor D and the center of the sub-pixel a to be measured on the OLED panel 1 are known quantities.
  • the horizontal distance X1 between the center of the sub-pixel a and the center of the first temperature sensor A and the center of the third temperature sensor C1, the horizontal distance X2 between the center of the sub-pixel a to be measured and the center of the second temperature sensor B and the center of the fourth temperature sensor D The vertical distance Y1 between the center of the sub-pixel a to be measured, the center of the first temperature sensor A and the center of the second temperature sensor B1, the center of the sub-pixel a to be measured, the center of the third temperature sensor C, and the center of the fourth temperature sensor D of
  • the straight distance Y2 is a known quantity, and the processing module 2 obtains the temperatures at the locations where the first temperature sensor A, the second temperature sensor B, the third temperature sensor C, and the fourth temperature sensor D are combined with bilinear interpolation.
  • the calculation formula can calculate the temperature of the sub-pixel a to be measured.
  • the calculation formula of the bilinear difference is:
  • T [Y2 * (T1 * X2 + T2 * X1) + Y1 * (T3 * X2 + T4 * X1)] / [(X1 + X2) * (Y1 + Y2)];
  • T is the temperature of the sub-pixel a to be measured
  • T1 is the temperature at the location of the first temperature sensor A
  • T2 is the temperature at the location of the second temperature sensor B
  • T3 is the third temperature sensor
  • T4 is the temperature at the location of the fourth temperature sensor D
  • X1 is the horizontal distance between the center of the sub-pixel a to be measured, the center of the first temperature sensor A, and the center of the third temperature sensor C
  • X2 is The horizontal distance between the center of the sub-pixel a to be measured, the center of the second temperature sensor B and the center of the fourth temperature sensor D
  • Y1 is the center of the sub-pixel a to be measured
  • Y2 is the vertical distance between the center of the sub-pixel a to be measured and the center of the third temperature sensor C and the center of the fourth temperature sensor D.
  • the number of the temperature sensors 111 in the temperature sensor layer 11 may be specifically designed according to the size of the OLED panel 1.
  • an OLED panel 1 with a resolution of 3840 * 2160 may be provided with 30 * 18 temperature sensors 111 correspondingly.
  • the distance between adjacent temperature sensors 111 is 3 cm-5 cm.
  • the distance between adjacent temperature sensors 111 is 4 cm.
  • the specific manner in which the processing module 2 generates the compensation data signals of the corresponding multiple sub-pixels according to the brightness of the multiple sub-pixels and the temperature of the multiple sub-pixels is: the processing module 2 according to the brightness of the multiple sub-pixels to be displayed , The temperature of the multiple sub-pixels and a preset look-up table of the correlation between the multiple compensation data voltages corresponding to the multiple sub-pixels and the threshold voltage difference, temperature, and display brightness of the driving thin-film transistor, to obtain the compensation data of the corresponding multiple sub-pixels
  • the difference between the voltage and the threshold voltage of the driving thin film transistor is obtained by summing the difference between the compensation data voltage and the threshold voltage of the multiple sub-pixels with the preset threshold voltages of the driving thin-film transistors of the multiple sub-pixels to obtain the
  • the compensation data voltage generates a compensation data signal corresponding to the plurality of sub-pixels according to the compensation data voltage of the plurality of sub-pixels.
  • the look-up tables corresponding to each sub-pixel include a plurality of compensation data voltages and The driving thin film transistor threshold voltage difference node value, a plurality of sequentially increasing temperature node values, and a plurality of display brightness node values.
  • a display brightness node value corresponds to a combination of a compensation data voltage, a threshold voltage difference threshold value of the driving thin film transistor, and a temperature node value.
  • the lookup table corresponding to each sub-pixel includes 9 compensation data voltage and driving thin film transistor threshold voltage difference node values, 16 temperature node values, and 144 display brightness node values. .
  • the smallest one of the nine compensated data voltages and the threshold voltage threshold of the driving thin film transistor is 0V, and the largest one is 8V.
  • the difference is 1V.
  • the smallest of the 16 temperature nodes is -20 ° C, and the largest is 60 ° C.
  • the difference between the two adjacent temperature nodes is 5 ° C.
  • the temperature of the sub-pixel is equal to a temperature node value in the corresponding look-up table
  • the brightness to be displayed of the sub-pixel is equal to a display brightness node value in the corresponding look-up table
  • the temperature of the sub-pixel is equal to
  • a combination of a compensation data voltage and a threshold value of the driving thin film transistor threshold voltage difference in the corresponding lookup table corresponds to the brightness of the sub-pixel to be displayed
  • the combination of the temperature with the temperature of the sub-pixel corresponds to the sub-pixel's
  • the node value of the difference between the compensation data voltage of the brightness to be displayed and the threshold voltage of the driving thin film transistor is used as the difference between the compensation data voltage of the sub pixel and the threshold voltage of the driving thin film transistor; otherwise, the lookup table and the sub pixel to be displayed are used.
  • the brightness and the temperature of the sub-pixel are calculated by interpolation to obtain the difference between the compensation data voltage of the sub-pixel and the threshold voltage of the driving thin film transistor.
  • the brightness to be displayed of the sub-pixel corresponds to a combination of a compensation data voltage and a threshold voltage difference threshold voltage of the driving thin film transistor of 1V and a temperature node value of -15 ° C.
  • the brightness node value is displayed.
  • 1V is used as the difference between the compensation data voltage of the sub-pixel and the threshold voltage of the driving thin film transistor.
  • the display brightness node value corresponding to any combination of the compensation data voltage and the threshold value of the driving thin film transistor threshold voltage difference value and the temperature node value of -15 ° C is not the same as the sub-pixel.
  • the pixels to be displayed have the same brightness.
  • the nine display brightness node values corresponding to the combination of the nine compensated data voltages and the threshold voltage difference threshold voltage of the driving thin film transistor and the temperature node value of -15 ° C are used to treat the subpixels.
  • the display brightness is calculated by interpolation to obtain the difference between the compensation data voltage and the threshold voltage of the driving thin film transistor when the sub-pixel temperature to be displayed corresponds to the sub-pixel temperature of -15 ° C.
  • the nine display brightness node values corresponding to the combination of the nine compensation data voltages and the threshold voltage difference threshold voltage of the driving thin film transistor and the temperature node value of -10 ° C are used respectively.
  • 9 compensation data voltages and the threshold voltage difference threshold value of the driving thin film transistor are respectively combined with the 9 display brightness node values corresponding to the temperature node value of -15 ° C, and the temperature of the sub-pixel is interpolated to obtain 9 compensation data voltages.
  • the driving thin film transistor threshold voltage difference node value corresponding to the temperature of the sub-pixel corresponding to the nine intermediate brightness values to be displayed and then use the nine compensation data voltage and driving thin film transistor threshold voltage difference node value to
  • the 9 intermediate values of brightness to be displayed corresponding to the temperature combination are interpolated again for the brightness of the sub-pixel to be displayed, and the compensation data voltage and driving film corresponding to the brightness of the sub-pixel to be displayed at a sub-pixel temperature of -11 ° C are obtained.
  • the second embodiment of the temperature compensation system for an OLED panel according to the present invention is different from the above-mentioned first embodiment in that the temperature sensor layer 11 includes a plurality of rows of temperature sensors 111, and any four adjacent temperature sensors. 111 forms a virtual parallelogram.
  • the four temperature sensors 111 adjacent to the sub-pixel a ′ to be measured are defined as a first temperature sensor A ′, a second temperature sensor B ′, a third temperature sensor C ′, A fourth temperature sensor D ′, the center line of the first temperature sensor A ′ and the second temperature sensor B ′ is parallel to the center line of the third temperature sensor C ′ and the fourth temperature sensor D ′, and the first The center connection between the temperature sensor A 'and the third temperature sensor C' is parallel to the center connection between the second temperature sensor B 'and the fourth temperature sensor D'.
  • the first temperature sensor A', the second temperature sensor B', The coordinates of the respective centers of the third temperature sensor C 'and the fourth temperature sensor D' and the center of the sub-pixel a 'to be measured on the OLED panel 1 are known quantities. Therefore, the first temperature sensor A' and the third The distance X1 'between the line connecting the center of the temperature sensor C' and the center of the sub-pixel a 'to be measured in a direction parallel to the line connecting the centers of the first temperature sensor A' and the second temperature sensor B ', the second Temperature sensor B 'and fourth The distance X2 'between the center line of the degree sensor D' and the center of the sub-pixel a 'to be measured in a direction parallel to the center line of the first temperature sensor A' and the second temperature sensor B ', the first temperature Distance Y1 between the center line of the sensor A 'and the second temperature sensor B' and the center of the sub-pixel a 'to be measured in a direction parallel to the center line of the first temperature sensor
  • the processing module 2 obtains the temperatures at the positions of the first temperature sensor A ′, the second temperature sensor B ′, the third temperature sensor C ′, and the fourth temperature sensor D ′, and combines a bilinear difference calculation formula, That is, the temperature of the sub-pixel to be measured can be calculated.
  • T ' [Y2' * (T1 '* X2' + T2 '* X1') + Y1 '* (T3' * X2 '+ T4' * X1 ')] / [(X1' + X2 ') * (Y1 '+ Y2')];
  • T ′ is the temperature of the sub-pixel a ′ to be measured
  • T1 ′ is the temperature of the position of the first temperature sensor A ′
  • T2 ′ is the temperature of the position of the second temperature sensor B ′
  • T3 ′ Is the temperature at the location of the third temperature sensor C '
  • T4' is the temperature at the location of the fourth temperature sensor D '
  • X1' is the center of the first temperature sensor A 'and the third temperature sensor C'
  • X2 ′ is the second temperature sensor B ′ and
  • Y1 ' is the distance The center line of the
  • Y2 ' is the third temperature sensor C
  • a fourth temperature sensor D ' is the measured line of centers subpixel a' parallel to the center distance of the first temperature sensor in the direction of A 'and a third temperature sensor C' of the line of centers.
  • the temperature compensation system of the OLED panel of the present invention is provided with a temperature sensor layer 11 including a plurality of temperature sensors 111 on one surface or inside of the OLED panel 1.
  • the sensor 11 detects the temperature at its location and transmits it to the processing module 2.
  • the processing module 2 receives and processes the initial data signals of multiple sub-pixels, obtains the brightness to be displayed of the multiple sub-pixels, and receives the location of the multiple temperature sensors 111.
  • the temperature is processed to obtain the temperatures of the multiple sub-pixels, and then the corresponding compensation data signals of the multiple sub-pixels are generated and output according to the brightness of the multiple sub-pixels to be displayed and the temperatures of the multiple sub-pixels.
  • Global temperature detection and corresponding compensation can improve the accuracy of temperature compensation and effectively improve the display effect of the OLED panel 1.
  • the present invention also provides a method for temperature compensation of an OLED panel, which is applied to the above-mentioned temperature compensation system of the OLED panel, and the structure of the temperature compensation system of the OLED panel is not repeated here. description.
  • the temperature compensation method of the OLED panel of the present invention includes the following steps:
  • step S1 the temperature sensor 111 detects the temperature at its location and transmits it to the processing module 2.
  • Step S2 the processing module 2 receives the initial data signals of a plurality of sub-pixels and performs processing to obtain the brightness to be displayed of the plurality of sub-pixels, and the processing module 2 receives and processes the temperatures at the locations of the plurality of temperature sensors 111 to obtain multiple For the temperature of each sub-pixel, the processing module 2 generates and outputs corresponding compensation data signals of the plurality of sub-pixels according to the brightness of the plurality of sub-pixels to be displayed and the temperature of the plurality of sub-pixels.
  • the temperature compensation method of the OLED panel of the present invention detects the temperature of the location of the OLED panel by using a plurality of temperature sensors 111 disposed on a side surface or inside of the OLED panel 1 and transmitting the temperature to the processing module. 2.
  • the processing module 2 receives and processes the initial data signals of the multiple sub-pixels, obtains the brightness to be displayed of the multiple sub-pixels, and receives and processes the temperatures at the locations of the multiple temperature sensors 111 to obtain the temperatures of the multiple sub-pixels, and then according to The brightness of the multiple sub-pixels and the temperature of the multiple sub-pixels generate and output corresponding compensation data signals of the multiple sub-pixels.
  • global temperature detection and corresponding compensation of the OLED panel can improve the temperature compensation. The accuracy can effectively improve the display effect of the OLED panel 1.
  • the temperature compensation system of the OLED panel of the present invention includes an OLED panel and a processing module electrically connected to the OLED panel.
  • the OLED panel includes a plurality of sub-pixels arranged in an array.
  • the processing module receives the initial data signals of multiple sub-pixels and processes them to obtain The brightness to be displayed of a plurality of sub-pixels, and the temperature at the locations of the plurality of temperature sensors is received and processed to obtain the temperature of the plurality of sub-pixels, and then a plurality of corresponding sub-pixels are generated according to the brightness of the plurality of sub-pixels to be displayed and the temperature of the plurality of sub-pixels. And output the compensation data signal, which can accurately and effectively perform temperature compensation on the OLED panel.
  • the temperature compensation method of the OLED panel of the present invention can accurately and effectively perform temperature compensation on the OLED panel.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Electroluminescent Light Sources (AREA)
  • Control Of El Displays (AREA)

Abstract

一种OLED面板（1）的温度补偿系统及OLED面板（1）的温度补偿方法。该OLED面板（1）的温度补偿系统包括OLED面板（1）及与OLED面板（1）电性连接的处理模块（2），该OLED面板（1）包括阵列排布的多个子像素，且OLED面板（1）的一侧面或内部设有包括多个温度传感器（111）的温度传感器层，在对OLED面板（1）进行温度补偿时，温度传感器（111）侦测其所在位置的温度并传输至处理模块（2），处理模块（2）接收多个子像素的初始数据信号并进行处理，获取多个子像素的待显示亮度，并接收多个温度传感器（111）所在位置的温度并进行处理，获取多个子像素的温度，而后根据多个子像素的待显示亮度及多个子像素的温度产生对应的多个子像素的补偿数据信号并输出，能够准确有效地对OLED面板（1）进行温度补偿。

Description

OLED面板温度补偿系统及OLED面板温度补偿方法 技术领域
本发明涉及显示技术领域，尤其涉及一种OLED面板温度补偿系统及OLED面板温度补偿方法。
背景技术
有机发光二极管(Organic Light Emitting Display，OLED)显示装置具有自发光、驱动电压低、发光效率高、响应时间短、清晰度与对比度高、近180°视角、使用温度范围宽、可实现柔性显示与大面积全色显示等诸多优点，被业界公认为是最有发展潜力的显示装置。
OLED显示装置按照驱动方式可以分为无源矩阵型OLED(Passive Matrix OLED，PMOLED)和有源矩阵型OLED(Active Matrix OLED，AMOLED)两大类，即直接寻址和薄膜晶体管(Thin Film Transistor，TFT)矩阵寻址两类。其中，AMOLED具有呈阵列式排布的像素，属于主动显示类型，发光效能高，通常用作高清晰度的大尺寸显示装置。
AMOLED是电流驱动器件，当有电流流经有机发光二极管时，有机发光二极管发光，且发光亮度由流经有机发光二极管自身的电流决定。大部分已有的集成电路(Integrated Circuit，IC)都只传输电压信号，故AMOLED的像素驱动电路需要完成将电压信号转变为电流信号的任务。传统的AMOLED像素驱动电路通常为2T1C，即两个薄膜晶体管加一个电容的结构，将电压变换为电流。
现有的OLED面板，由于其发光特性，导致其发热具有局部性，同时温度对OLED的材料有非常大的影响，因此有必要对OLED的面板温度进行侦测，并依据温度对输入OLED面板各子像素的数据信号进行调整，以实现温度补偿。目前常见的具有温度补偿功能的OLED显示器，一般在通过覆晶薄膜(COF)与OLED面板绑定的印刷电路板(PCB)上设置温度传感器，利用该温度传感器进行温度侦测，然后对OLED面板进行温度补偿，该结构的OLED显示器的温度传感器侦测的温度为全局温度，且温度侦测的并不精确，而OLED面板各区域因散热不同及特性不同，温度差异性较大，将温度传感器设置在印刷电路板上而获得的温度并不能有效地对OLED面板进行温度补偿。
发明内容
本发明的目的在于提供一种OLED面板的温度补偿系统，能够准确有效地对OLED面板进行温度补偿。
本发明的另一目的在于提供一种OLED面板的温度补偿方法，能够准确有效地对OLED面板进行温度补偿。
为实现上述目的，本发明首先提供一种OLED面板的温度补偿系统，包括OLED面板及与OLED面板电性连接的处理模块；
所述OLED面板包括阵列排布的多个子像素，所述OLED面板的一侧面设有温度传感器层；或者，所述OLED面板内设有平行于OLED面板侧面的温度传感器层；
所述温度传感器层包括多个间隔设置的温度传感器；每一温度传感器均电性连接所述处理模块；
所述温度传感器用于侦测其所在位置的温度并传输至处理模块；
所述处理模块用于接收多个子像素的初始数据信号并进行处理，获取多个子像素的待显示亮度，所述处理模块接收多个温度传感器所在位置的温度并进行处理，获取多个子像素的温度，所述处理模块根据多个子像素的待显示亮度及多个子像素的温度产生对应的多个子像素的补偿数据信号并输出。
所述处理模块接收多个温度传感器所在位置的温度并进行处理获取多个子像素所在位置的温度的具体方式为：将多个子像素中的一个设定为待测子像素，所述处理模块接收与所述待测子像素相邻的四个温度传感器所在位置的温度，通过双线性插值的方式计算获得所述待测子像素的温度。
所述温度传感器层包括呈阵列式排布的多个温度传感器。
定义与所述待测子像素相邻的呈2×2阵列的四个温度传感器中第一行第一列温度传感器、第一行第二列温度传感器、第二行第一列温度传感器及第二行第二列温度传感器分别为第一温度传感器、第二温度传感器、第三温度传感器、第四温度传感器，所述处理模块获取所述第一温度传感器、第二温度传感器、第三温度传感器及第四温度传感器所在位置的温度，结合双线性插值计算公式计算所述待测子像素的温度；
所述双线性差值计算公式为：
T＝[Y2*(T1*X2+T2*X1)+Y1*(T3*X2+T4*X1)]/[(X1+X2)*(Y1+Y2)]；
其中，T为所述待测子像素的温度，T1为所述第一温度传感器所在位置的温度，T2为所述第二温度传感器所在位置的温度，T3为所述第三温度 传感器所在位置的温度，T4为所述第四温度传感器所在位置的温度，X1为所述待测子像素中心与第一温度传感器中心及第三温度传感器中心的水平距离，X2为所述待测子像素中心与第二温度传感器中心及第四温度传感器中心的水平距离，Y1为所述待测子像素中心与第一温度传感器中心及第二温度传感器中心的垂直距离，Y2为所述待测子像素中心与第三温度传感器中心及第四温度传感器中心的垂直距离。
所述温度传感器层包括多行温度传感器，任意相邻的四个温度传感器之间形成虚拟平行四边形。
定义与所述待测子像素相邻的四个温度传感器分别为第一温度传感器、第二温度传感器、第三温度传感器、第四温度传感器，所述第一温度传感器和第二温度传感器的中心连线平行于第三温度传感器和第四温度传感器的中心连线，所述第一温度传感器和第三温度传感器的中心连线平行于第二温度传感器和第四温度传感器的中心连线，所述处理模块获取所述第一温度传感器、第二温度传感器、第三温度传感器及第四温度传感器所在位置的温度，并结合双线性差值计算公式，计算所述待测子像素的温度；
所述双线性差值计算公式为：
T’＝[Y2’*(T1’*X2’+T2’*X1’)+Y1’*(T3’*X2’+T4’*X1’)]/[(X1’+X2’)*(Y1’+Y2’)]；
其中，T’为所述待测子像素的温度，T1’为所述第一温度传感器所在位置的温度，T2’为所述第二温度传感器所在位置的温度，T3’为所述第三温度传感器所在位置的温度，T4’为所述第四温度传感器所在位置的温度，X1’为所述第一温度传感器和第三温度传感器中心的连线与所述待测子像素的中心在平行于第一温度传感器和第二温度传感器中心连线的方向上的距离，X2’为所述第二温度传感器和第四温度传感器的中心连线与所述待测子像素中心在平行于第一温度传感器和第二温度传感器中心连线的方向上的距离，X3’为所述第一温度传感器和第二温度传感器的中心连线与所述待测子像素中心在平行于第一温度传感器及第三温度传感器的中心连线的方向上的距离，X4’为所述第三温度传感器和第四温度传感器的中心连线与所述待测子像素中心在平行于第一温度传感器和第三温度传感器中心连线的方向上的距离。
相邻的温度传感器之间的距离为3cm-5cm。
所述处理模块根据多个子像素的待显示亮度及多个子像素的温度产生对应的多个子像素的补偿数据信号的具体方式为：所述处理模块根据多个子像素的待显示亮度、多个子像素的温度以及预设的分别与多个子像素对 应的多个补偿数据电压和驱动薄膜晶体管阈值电压差值、温度及显示亮度相互关系的查找表，获得对应的多个子像素的补偿数据电压和驱动薄膜晶体管的阈值电压的差值，将多个子像素的补偿数据电压与阈值电压的差值分别与预设的多个子像素的驱动薄膜晶体管的阈值电压进行求和，得到多个子像素的补偿数据电压，根据多个子像素的补偿数据电压产生对应的多个子像素的补偿数据信号。
与每一子像素对应的查找表均包括多个依次增大的补偿数据电压和驱动薄膜晶体管阈值电压差值节点值、多个依次增大的温度节点值以及多个显示亮度节点值；一显示亮度节点值与一补偿数据电压和驱动薄膜晶体管阈值电压差值节点值及一温度节点值的组合对应；当所述子像素的温度与对应的查找表中的一温度节点值相等，所述子像素的待显示亮度与对应的查找表中的一显示亮度节点值相等，且所述子像素的温度与对应的查找表中的一补偿数据电压和驱动薄膜晶体管阈值电压差值节点值的组合对应所述子像素的待显示亮度时，将该与所述子像素的温度组合后对应所述子像素的待显示亮度的补偿数据电压和驱动薄膜晶体管阈值电压差值节点值作为所述子像素的补偿数据电压和驱动薄膜晶体管阈值电压差值，否则，利用所述查找表、所述子像素的待显示亮度、所述子像素的温度，通过插值的方式计算获得所述子像素的补偿数据电压和驱动薄膜晶体管阈值电压差值。
本发明还提供一种OLED面板的温度补偿方法，应用于上述OLED面板的温度补偿系统，包括如下步骤：
步骤S1、所述温度传感器侦测其所在位置的温度并传输至处理模块；
步骤S2、所述处理模块接收多个子像素的初始数据信号并进行处理，获取多个子像素的待显示亮度，所述处理模块接收多个温度传感器所在位置的温度并进行处理，获取多个子像素的温度，所述处理模块根据多个子像素的待显示亮度及多个子像素的温度产生对应的多个子像素的补偿数据信号并输出。
本发明的有益效果：本发明提供的一种OLED面板的温度补偿系统包括OLED面板及与OLED面板电性连接的处理模块，该OLED面板包括阵列排布的多个子像素，且OLED面板的一侧面或内部设有包括多个温度传感器的温度传感器层，在对OLED面板进行温度补偿时，温度传感器侦测其所在位置的温度并传输至处理模块，处理模块接收多个子像素的初始数据信号并进行处理，获取多个子像素的待显示亮度，并接收多个温度传感器所在位置的温度并进行处理，获取多个子像素的温度，而后根据多个子 像素的待显示亮度及多个子像素的温度产生对应的多个子像素的补偿数据信号并输出，能够准确有效地对OLED面板进行温度补偿。本发明提供的一种OLED面板的温度补偿方法，能够准确有效地对OLED面板进行温度补偿。
附图说明
为了能更进一步了解本发明的特征以及技术内容，请参阅以下有关本发明的详细说明与附图，然而附图仅提供参考与说明用，并非用来对本发明加以限制。
附图中，
图1为本发明的OLED面板的温度补偿系统的第一实施例的结构示意图；
图2为本发明的OLED面板的温度补偿系统的第一实施例获取待测子像素的温度的示意图；
图3为本发明的OLED面板的温度补偿系统的第二实施例的结构示意图；
图4为本发明的OLED面板的温度补偿系统的第二实施例获取待测子像素的温度的示意图；
图5为本发明的OLED面板的温度补偿方法的流程图。
具体实施方式
为更进一步阐述本发明所采取的技术手段及其效果，以下结合本发明的优选实施例及其附图进行详细描述。
请参阅图1，本发明的OLED面板的温度补偿系统的第一实施例包括OLED面板1及与OLED面板1电性连接的处理模块2。
所述OLED面板1包括阵列排布的多个子像素。所述OLED面板1的一侧面设有温度传感器层11。所述温度传感器层11包括多个间隔设置的温度传感器111。每一温度传感器111均电性连接所述处理模块2。
所述温度传感器111用于侦测其所在位置的温度并传输至处理模块2。
所述处理模块2用于接收多个子像素的初始数据信号并进行处理，获取多个子像素的待显示亮度，所述处理模块2接收多个温度传感器111所在位置的温度并进行处理，获取多个子像素的温度，所述处理模块2根据 多个子像素的待显示亮度及多个子像素的温度产生对应的多个子像素的补偿数据信号并输出。
优选地，在本发明的第一实施例中，所述温度传感器层11设于OLED面板1的背面也即OLED面板的非出光面。所述温度传感器层11可为透明材料或不透明材料。
具体地，在本发明的其他实施例中，所述温度传感器层11还可设于所述OLED面板1内并保持与OLED面板1的侧面平行即可，现有的OLED面板一般包括依次设置的衬底、TFT阵列层及OLED器件层，当所述温度感器层11为透明材料时，所述温度传感器层11可以设置在OLED面板1内的OLED器件层远离衬底的一侧，当所述温度传感器层11为不透明材料时，所述温度传感器层11还可以设置在衬底上与TFT阵列层位于同层。
具体地，处理模块2可以为时序控制器(TCON)。所述OLED面板的温度补偿系统还包括通过COF与OLED面板1绑定的X板(未图示)及与X板绑定的C板(未图示)，所述时序控制器设置在C板上，多个温度传感器111通过COF电性连接X板，进而与X板绑定的C板上的时序控制器电性连接。
具体地，请参阅图1，在本发明的第一实施例中，所述温度传感器层11包括呈阵列式排布的多个温度传感器111。所述处理模块2接收多个温度传感器111所在位置的温度并进行处理，获取多个子像素所在位置的温度的具体方式为：将多个子像素中的一个设定为待测子像素，所述处理模块2接收与所述待测子像素相邻的四个温度传感器111所在位置的温度，通过双线性插值的方式计算获得所述待测子像素的温度。
进一步地，请参阅定图2，定义与所述待测子像素a相邻的呈2×2阵列的四个温度传感器111中第一行第一列温度传感器111、第一行第二列温度传感器111、第二行第一列温度传感器111及第二行第二列温度传感器111分别为第一温度传感器A、第二温度传感器B、第三温度传感器C、第四温度传感器D，由于第一温度传感器A、第二温度传感器B、第三温度传感器C、第四温度传感器D各自的中心及待测子像素a中心在OLED面板1上的坐标均为已知量，因此，所述待测子像素a中心与第一温度传感器A中心及第三温度传感器C中心的水平距离X1、所述待测子像素a中心与第二温度传感器B中心及第四温度传感器D中心的水平距离X2、所述待测子像素a中心与第一温度传感器A中心及第二温度传感器B中心的垂直距离Y1、所述待测子像素a中心与第三温度传感器C中心及第四温度传感器D中心的垂直距离Y2均为已知量，所述处理模块2获取所述第一温度传感器A、 第二温度传感器B、第三温度传感器C及第四温度传感器D所在位置的温度，结合双线性插值计算公式即可计算所述待测子像素a的温度。
在本发明的第一实施例中，所述双线性差值计算公式为：
T＝[Y2*(T1*X2+T2*X1)+Y1*(T3*X2+T4*X1)]/[(X1+X2)*(Y1+Y2)]；
其中，T为所述待测子像素a的温度，T1为所述第一温度传感器A所在位置的温度，T2为所述第二温度传感器B所在位置的温度，T3为所述第三温度传感器C所在位置的温度，T4为所述第四温度传感器D所在位置的温度，X1为所述待测子像素a中心与第一温度传感器A中心及第三温度传感器中心C的水平距离，X2为所述待测子像素a中心与第二温度传感器B中心及第四温度传感器D中心的水平距离，Y1为所述待测子像素a中心与第一温度传感器A中心及第二温度传感器B中心的垂直距离，Y2为所述待测子像素a中心与第三温度传感器C中心及第四温度传感器D中心的垂直距离。
具体地，所述温度传感器层11中温度传感器111的数量可根据OLED面板1的尺寸进行具体设计，例如，分辨率3840*2160的OLED面板1可对应设置30*18个温度传感器111。
具体地，相邻的温度传感器111之间的距离为3cm-5cm。优选地，相邻的温度传感器111之间的距离为4cm。
具体地，所述处理模块2根据多个子像素的待显示亮度及多个子像素的温度产生对应的多个子像素的补偿数据信号的具体方式为：所述处理模块2根据多个子像素的待显示亮度、多个子像素的温度以及预设的分别与多个子像素对应的多个补偿数据电压和驱动薄膜晶体管阈值电压差值、温度及显示亮度相互关系的查找表，获得对应的多个子像素的补偿数据电压和驱动薄膜晶体管的阈值电压的差值，将多个子像素的补偿数据电压与阈值电压的差值分别与预设的多个子像素的驱动薄膜晶体管的阈值电压进行求和，得到多个子像素的补偿数据电压，根据多个子像素的补偿数据电压产生对应的多个子像素的补偿数据信号。
进一步地，为了降低分别与多个子像素对应的查找表所占用内存的大小以降低产品成本，在本发明中，与每一子像素对应的查找表均包括多个依次增大的补偿数据电压和驱动薄膜晶体管阈值电压差值节点值、多个依次增大的温度节点值以及多个显示亮度节点值。一显示亮度节点值与一补偿数据电压和驱动薄膜晶体管阈值电压差值节点值及一温度节点值的组合对应。例如，在本发明的优选实施例中，与每一子像素对应的查找表均包括9个补偿数据电压和驱动薄膜晶体管阈值电压差值节点值、16个温度节 点值以及144个显示亮度节点值。该9个补偿数据电压和驱动薄膜晶体管阈值电压差值节点值中最小的一个为0V，最大的一个为8V，数值相邻的两个补偿数据电压和驱动薄膜晶体管阈值电压差值节点值之间相差1V。该16个温度节点值中最小的一个为-20℃，最大的一个为60℃，数值相邻的两个温度节点值之间的差值为5℃。当所述子像素的温度与对应的查找表中的一温度节点值相等，所述子像素的待显示亮度与对应的查找表中的一显示亮度节点值相等，且所述子像素的温度与对应的查找表中的一补偿数据电压和驱动薄膜晶体管阈值电压差值节点值的组合对应所述子像素的待显示亮度时，将该与所述子像素的温度组合后对应所述子像素的待显示亮度的补偿数据电压和驱动薄膜晶体管阈值电压差值节点值作为所述子像素的补偿数据电压和驱动薄膜晶体管阈值电压差值，否则，利用所述查找表、所述子像素的待显示亮度、所述子像素的温度，通过插值的方式计算获得所述子像素的补偿数据电压和驱动薄膜晶体管阈值电压差值。例如，当所述子像素的温度等于-15℃，所述子像素的待显示亮度为补偿数据电压和驱动薄膜晶体管阈值电压差值节点值为1V、温度节点值为-15℃的组合对应的显示亮度节点值，此时将1V作为所述子像素的补偿数据电压和驱动薄膜晶体管阈值电压差值。当所述子像素的温度为-15℃，任一补偿数据电压和驱动薄膜晶体管阈值电压差值节点值与-15℃的温度节点值的组合所对应的显示亮度节点值均不与所述子像素的待显示亮度相同，此时利用9个补偿数据电压和驱动薄膜晶体管阈值电压差值节点值分别与-15℃的温度节点值的组合所对应的9个显示亮度节点值对子像素的待显示亮度进行插值计算，得到子像素的待显示亮度在子像素温度为-15℃时对应的补偿数据电压和驱动薄膜晶体管阈值电压差值。当所述子像素的温度为-11℃时，先利用9个补偿数据电压和驱动薄膜晶体管阈值电压差值节点值分别与-10℃的温度节点值的组合所对应的9个显示亮度节点值以及9个补偿数据电压和驱动薄膜晶体管阈值电压差值节点值分别与-15℃的温度节点值组合所对应的9个显示亮度节点值对子像素的温度进行插值计算，得到9个补偿数据电压和驱动薄膜晶体管阈值电压差值节点值分别与子像素的温度组合所对应的9个待显示亮度中间值，之后利用9个补偿数据电压和驱动薄膜晶体管阈值电压差值节点值分别与子像素的温度组合所对应的9个待显示亮度中间值对子像素的待显示亮度进行再一次的插值计算，得到子像素的待显示亮度在子像素温度为-11℃时对应的补偿数据电压和驱动薄膜晶体管阈值电压差值。
请参阅图3，本发明的OLED面板的温度补偿系统的第二实施例与上述第一实施例的区别在于，所述温度传感器层11包括多行温度传感器111， 任意相邻的四个温度传感器111之间形成虚拟平行四边形。
进一步地，请参阅定图4，定义与所述待测子像素a’相邻的四个温度传感器111分别为第一温度传感器A’、第二温度传感器B’、第三温度传感器C’、第四温度传感器D’，所述第一温度传感器A’和第二温度传感器B’的中心连线平行于第三温度传感器C’和第四温度传感器D’的中心连线，所述第一温度传感器A’和第三温度传感器C’的中心连线平行于第二温度传感器B’和第四温度传感器D’的中心连线，由于第一温度传感器A’、第二温度传感器B’、第三温度传感器C’、第四温度传感器D’各自的中心及待测子像素a’中心在OLED面板1上的坐标均为已知量，因此，所述第一温度传感器A’和第三温度传感器C’中心的连线与所述待测子像素a’的中心在平行于第一温度传感器A’和第二温度传感器B’中心连线的方向上的距离X1’、所述第二温度传感器B’和第四温度传感器D’的中心连线与所述待测子像素a’中心在平行于第一温度传感器A’和第二温度传感器B’中心连线的方向上的距离X2’、所述第一温度传感器A’和第二温度传感器B’的中心连线与所述待测子像素a’中心在平行于第一温度传感器A’及第三温度传感器C’的中心连线的方向上的距离Y1’、所述第三温度传感器C’和第四温度传感器D’的中心连线与所述待测子像素a’中心在平行于第一温度传感器A’和第三温度传感器C’中心连线的方向上的距离Y2’均为已知量。所述处理模块2获取所述第一温度传感器A’、第二温度传感器B’、第三温度传感器C’及第四温度传感器D’所在位置的温度，并结合双线性差值计算公式，即可计算所述待测子像素的温度。
在本发明的第二实施例中，所述双线性差值计算公式为：
T’＝[Y2’*(T1’*X2’+T2’*X1’)+Y1’*(T3’*X2’+T4’*X1’)]/[(X1’+X2’)*(Y1’+Y2’)]；
其中，T’为所述待测子像素a’的温度，T1’为所述第一温度传感器A’所在位置的温度，T2’为所述第二温度传感器B’所在位置的温度，T3’为所述第三温度传感器C’所在位置的温度，T4’为所述第四温度传感器D’所在位置的温度，X1’为所述第一温度传感器A’和第三温度传感器C’中心的连线与所述待测子像素a’的中心在平行于第一温度传感器A’和第二温度传感器B’中心连线的方向上的距离，X2’为所述第二温度传感器B’和第四温度传感器D’的中心连线与所述待测子像素a’中心在平行于第一温度传感器A’和第二温度传感器B’中心连线的方向上的距离，Y1’为所述第一温度传感器A’和第二温度传感器B’的中心连线与所述待测子像素a’中心在平行于第一温度传感器A’及第三温度传感器C’的中心连线的方向上的距离，Y2’为所 述第三温度传感器C’和第四温度传感器D’的中心连线与所述待测子像素a’中心在平行于第一温度传感器A’和第三温度传感器C’中心连线的方向上的距离。
需要说明的是，本发明的OLED面板的温度补偿系统通过在OLED面板1的一侧表面或内部设有包括多个温度传感器111的温度传感器层11，在对OLED面板1进行温度补偿时，温度传感器11侦测其所在位置的温度并传输至处理模块2，处理模块2接收多个子像素的初始数据信号并进行处理，获取多个子像素的待显示亮度，并接收多个温度传感器111所在位置的温度并进行处理，获取多个子像素的温度，而后根据多个子像素的待显示亮度及多个子像素的温度产生对应的多个子像素的补偿数据信号并输出，相较于现有技术对OLED面板进行全局的温度侦测并对应进行补偿，能够提升温度补偿的准确性，能够有效提升OLED面板1的显示效果。
基于同一发明构思，请参阅图5，本发明还提供一种OLED面板的温度补偿方法，应用于上述的OLED面板的温度补偿系统，在此不再对OLED面板的温度补偿系统的结构做重复性描述。本发明的OLED面板的温度补偿方法包括如下步骤：
步骤S1、所述温度传感器111侦测其所在位置的温度并传输至处理模块2。
步骤S2、所述处理模块2接收多个子像素的初始数据信号并进行处理，获取多个子像素的待显示亮度，所述处理模块2接收多个温度传感器111所在位置的温度并进行处理，获取多个子像素的温度，所述处理模块2根据多个子像素的待显示亮度及多个子像素的温度产生对应的多个子像素的补偿数据信号并输出。
需要说明的是，本发明的OLED面板的温度补偿方法通过利用设置在OLED面板1的一侧表面或内部的温度传感器层11的多个温度传感器111侦测其所在位置的温度并传输至处理模块2，处理模块2接收多个子像素的初始数据信号并进行处理，获取多个子像素的待显示亮度，并接收多个温度传感器111所在位置的温度并进行处理，获取多个子像素的温度，而后根据多个子像素的待显示亮度及多个子像素的温度产生对应的多个子像素的补偿数据信号并输出，相较于现有技术对OLED面板进行全局的温度侦测并对应进行补偿，能够提升温度补偿的准确性，能够有效提升OLED面板1的显示效果。
综上所述，本发明的OLED面板的温度补偿系统包括OLED面板及与OLED面板电性连接的处理模块，该OLED面板包括阵列排布的多个子像 素，且OLED面板的一侧表面或内部设有包括多个温度传感器的温度传感器层，在对OLED面板进行温度补偿时，温度传感器侦测其所在位置的温度并传输至处理模块，处理模块接收多个子像素的初始数据信号并进行处理，获取多个子像素的待显示亮度，并接收多个温度传感器所在位置的温度并进行处理，获取多个子像素的温度，而后根据多个子像素的待显示亮度及多个子像素的温度产生对应的多个子像素的补偿数据信号并输出，能够准确有效地对OLED面板进行温度补偿。本发明的OLED面板的温度补偿方法能够准确有效地对OLED面板进行温度补偿。
以上所述，对于本领域的普通技术人员来说，可以根据本发明的技术方案和技术构思作出其他各种相应的改变和变形，而所有这些改变和变形都应属于本发明权利要求的保护范围。

Claims (10)

  1. 一种OLED面板的温度补偿系统，包括OLED面板及与OLED面板电性连接的处理模块；
    所述OLED面板包括阵列排布的多个子像素；所述OLED面板的一侧面设有温度传感器层；或者，所述OLED面板内设有平行于OLED面板侧面的温度传感器层；
    所述温度传感器层包括多个间隔设置的温度传感器；每一温度传感器均电性连接所述处理模块；
    所述温度传感器用于侦测其所在位置的温度并传输至处理模块；
    所述处理模块用于接收多个子像素的初始数据信号并进行处理，获取多个子像素的待显示亮度，所述处理模块接收多个温度传感器所在位置的温度并进行处理，获取多个子像素的温度，所述处理模块根据多个子像素的待显示亮度及多个子像素的温度产生对应的多个子像素的补偿数据信号并输出。
  2. 如权利要求1所述的OLED面板的温度补偿系统，其中，所述处理模块接收多个温度传感器所在位置的温度并进行处理获取多个子像素所在位置的温度的具体方式为：将多个子像素中的一个设定为待测子像素，所述处理模块接收与所述待测子像素相邻的四个温度传感器所在位置的温度，通过双线性插值的方式计算获得所述待测子像素的温度。
  3. 如权利要求2所述的OLED面板的温度补偿系统，其中，所述温度传感器层包括呈阵列式排布的多个温度传感器。
  4. 如权利要求3所述的OLED面板的温度补偿系统，其中，定义与所述待测子像素相邻的呈2×2阵列的四个温度传感器中第一行第一列温度传感器、第一行第二列温度传感器、第二行第一列温度传感器及第二行第二列温度传感器分别为第一温度传感器、第二温度传感器、第三温度传感器、第四温度传感器，所述处理模块获取所述第一温度传感器、第二温度传感器、第三温度传感器及第四温度传感器所在位置的温度，结合双线性插值计算公式计算所述待测子像素的温度；
    所述双线性差值计算公式为：
    T＝[Y2*(T1*X2+T2*X1)+Y1*(T3*X2+T4*X1)]/[(X1+X2)*(Y1+Y2)]；
    其中，T为所述待测子像素的温度，T1为所述第一温度传感器所在位置的温度，T2为所述第二温度传感器所在位置的温度，T3为所述第三温度 传感器所在位置的温度，T4为所述第四温度传感器所在位置的温度，X1为所述待测子像素中心与第一温度传感器中心及第三温度传感器中心的水平距离，X2为所述待测子像素中心与第二温度传感器中心及第四温度传感器中心的水平距离，Y1为所述待测子像素中心与第一温度传感器中心及第二温度传感器中心的垂直距离，Y2为所述待测子像素中心与第三温度传感器中心及第四温度传感器中心的垂直距离。
  5. 如权利要求2所述的OLED面板的温度补偿系统，其中，所述温度传感器层包括多行温度传感器，任意相邻的四个温度传感器之间形成虚拟平行四边形。
  6. 如权利要求5所述的OLED面板的温度补偿系统，其中，定义与所述待测子像素相邻的四个温度传感器分别为第一温度传感器、第二温度传感器、第三温度传感器、第四温度传感器，所述第一温度传感器和第二温度传感器的中心连线平行于第三温度传感器和第四温度传感器的中心连线，所述第一温度传感器和第三温度传感器的中心连线平行于第二温度传感器和第四温度传感器的中心连线，所述处理模块获取所述第一温度传感器、第二温度传感器、第三温度传感器及第四温度传感器所在位置的温度，并结合双线性差值计算公式，计算所述待测子像素的温度；
    所述双线性差值计算公式为：
    T’＝[Y2’*(T1’*X2’+T2’*X1’)+Y1’*(T3’*X2’+T4’*X1’)]/[(X1’+X2’)*(Y1’+Y2’)]；
    其中，T’为所述待测子像素的温度，T1’为所述第一温度传感器所在位置的温度，T2’为所述第二温度传感器所在位置的温度，T3’为所述第三温度传感器所在位置的温度，T4’为所述第四温度传感器所在位置的温度，X1’为所述第一温度传感器和第三温度传感器中心的连线与所述待测子像素的中心在平行于第一温度传感器和第二温度传感器中心连线的方向上的距离，X2’为所述第二温度传感器和第四温度传感器的中心连线与所述待测子像素中心在平行于第一温度传感器和第二温度传感器中心连线的方向上的距离，Y1’为所述第一温度传感器和第二温度传感器的中心连线与所述待测子像素中心在平行于第一温度传感器及第三温度传感器的中心连线的方向上的距离，Y2’为所述第三温度传感器和第四温度传感器的中心连线与所述待测子像素中心在平行于第一温度传感器和第三温度传感器中心连线的方向上的距离。
  7. 如权利要求1所述的OLED面板的温度补偿系统，其中，相邻的温度传感器之间的距离为3cm-5cm。
  8. 如权利要求1所述的OLED面板的温度补偿系统，其中，所述处理模块根据多个子像素的待显示亮度及多个子像素的温度产生对应的多个子像素的补偿数据信号的具体方式为：所述处理模块根据多个子像素的待显示亮度、多个子像素的温度以及预设的分别与多个子像素对应的多个补偿数据电压和驱动薄膜晶体管阈值电压差值、温度及显示亮度相互关系的查找表，获得对应的多个子像素的补偿数据电压和驱动薄膜晶体管的阈值电压的差值，将多个子像素的补偿数据电压与阈值电压的差值分别与预设的多个子像素的驱动薄膜晶体管的阈值电压进行求和，得到多个子像素的补偿数据电压，根据多个子像素的补偿数据电压产生对应的多个子像素的补偿数据信号。
  9. 权利要求8所述的OLED面板的温度补偿系统，其中，与每一子像素对应的查找表均包括多个依次增大的补偿数据电压和驱动薄膜晶体管阈值电压差值节点值、多个依次增大的温度节点值以及多个显示亮度节点值；一显示亮度节点值与一补偿数据电压和驱动薄膜晶体管阈值电压差值节点值及一温度节点值的组合对应；当所述子像素的温度与对应的查找表中的一温度节点值相等，所述子像素的待显示亮度与对应的查找表中的一显示亮度节点值相等，且所述子像素的温度与对应的查找表中的一补偿数据电压和驱动薄膜晶体管阈值电压差值节点值的组合对应所述子像素的待显示亮度时，将该与所述子像素的温度组合后对应所述子像素的待显示亮度的补偿数据电压和驱动薄膜晶体管阈值电压差值节点值作为所述子像素的补偿数据电压和驱动薄膜晶体管阈值电压差值，否则，利用所述查找表、所述子像素的待显示亮度、所述子像素的温度，通过插值的方式计算获得所述子像素的补偿数据电压和驱动薄膜晶体管阈值电压差值。
  10. 一种OLED面板的温度补偿方法，应用于如权利要求1所述的OLED面板的温度补偿系统，包括如下步骤：
    步骤S1、所述温度传感器侦测其所在位置的温度并传输至处理模块；
    步骤S2、所述处理模块接收多个子像素的初始数据信号并进行处理，获取多个子像素的待显示亮度，所述处理模块接收多个温度传感器所在位置的温度并进行处理，获取多个子像素的温度，所述处理模块根据多个子像素的待显示亮度及多个子像素的温度产生对应的多个子像素的补偿数据信号并输出。
PCT/CN2018/106613 2018-06-11 2018-09-20 Oled面板温度补偿系统及oled面板温度补偿方法 Ceased WO2019237553A1 (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US16/300,051 US10748478B2 (en) 2018-06-11 2018-09-20 OLED panel temperature compensation system and OLED panel temperature compensation method

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201810619412.1 2018-06-11
CN201810619412.1A CN108831380A (zh) 2018-06-11 2018-06-11 Oled面板温度补偿系统及oled面板温度补偿方法

Publications (1)

Publication Number Publication Date
WO2019237553A1 true WO2019237553A1 (zh) 2019-12-19

Family

ID=64142406

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2018/106613 Ceased WO2019237553A1 (zh) 2018-06-11 2018-09-20 Oled面板温度补偿系统及oled面板温度补偿方法

Country Status (2)

Country Link
CN (1) CN108831380A (zh)
WO (1) WO2019237553A1 (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2025040340A1 (en) * 2023-08-24 2025-02-27 Ams-Osram International Gmbh Method for operating a radiation emitting device

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110430625A (zh) * 2019-06-10 2019-11-08 深圳桐源科技有限公司 气溶胶产生系统、加热模组、温度检测方法及装置
CN112740315B (zh) * 2019-08-23 2022-10-18 京东方科技集团股份有限公司 显示面板的温度补偿方法、显示面板以及电子装置
CN110803105B (zh) * 2019-11-15 2021-06-01 北京海纳川汽车部件股份有限公司 汽车车灯的控制方法、装置及汽车
CN111240073B (zh) * 2020-02-13 2023-01-17 京东方科技集团股份有限公司 一种显示面板、其制作方法及显示装置
CN111489686B (zh) * 2020-03-31 2021-11-23 深圳市奥拓电子股份有限公司 一种显示屏热效补偿调节显示装置、方法及其系统
CN114495849A (zh) 2020-10-23 2022-05-13 华硕电脑股份有限公司 电子装置及其显示影像补偿方法
CN114822418B (zh) * 2021-01-29 2024-07-05 华为技术有限公司 一种显示装置的随温补偿方法及显示装置
CN113270070A (zh) * 2021-05-25 2021-08-17 武汉华星光电技术有限公司 自主发光显示装置
CN114203086B (zh) * 2021-12-01 2023-10-20 西安诺瓦星云科技股份有限公司 热力补偿校正的方法、装置及设备
CN114743511B (zh) * 2022-04-27 2025-01-14 福州京东方光电科技有限公司 显示面板的亮度补偿方法、装置、系统及显示设备
CN115985229B (zh) * 2023-01-06 2024-11-29 卡莱特云科技股份有限公司 一种快速修正显示屏校正系数梯度的方法及装置
CN116543693B (zh) 2023-07-07 2023-09-19 惠科股份有限公司 显示面板及显示装置
CN120975027B (zh) * 2025-10-21 2025-12-23 西安晶捷电子技术有限公司 一种计算机辅助下的pcba电路板散热布局优化方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105679265A (zh) * 2016-03-08 2016-06-15 京东方科技集团股份有限公司 面板补偿装置和方法
US20170221430A1 (en) * 2014-10-02 2017-08-03 Carrier Corporation Liquid crystal display with temperature compensation
CN107274836A (zh) * 2017-08-02 2017-10-20 深圳市华星光电半导体显示技术有限公司 具有温度补偿功能的amoled显示面板及显示装置
CN107731160A (zh) * 2017-10-11 2018-02-23 深圳市华星光电半导体显示技术有限公司 一种应用于显示面板的温度补偿电路、方法及显示面板

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101828143B (zh) * 2007-10-15 2012-12-26 富士通株式会社 具有点阵型显示元件的显示装置及其驱动方法
KR101710577B1 (ko) * 2010-05-11 2017-02-28 삼성디스플레이 주식회사 데이터 보상 방법 및 이를 수행하기 위한 표시 장치
US8907991B2 (en) * 2010-12-02 2014-12-09 Ignis Innovation Inc. System and methods for thermal compensation in AMOLED displays
JP5818547B2 (ja) * 2011-07-15 2015-11-18 キヤノン株式会社 バックライト装置、その制御方法、及び画像表示装置
JP6120552B2 (ja) * 2012-01-17 2017-04-26 キヤノン株式会社 表示装置及びその制御方法
US9177503B2 (en) * 2012-05-31 2015-11-03 Apple Inc. Display having integrated thermal sensors
CN103700346B (zh) * 2013-12-27 2016-08-31 合肥京东方光电科技有限公司 像素驱动电路、阵列基板、显示装置和像素驱动方法
CN104318897B (zh) * 2014-11-13 2017-06-06 合肥鑫晟光电科技有限公司 一种像素电路、有机电致发光显示面板及显示装置
CN105096829B (zh) * 2015-08-18 2017-06-20 青岛海信电器股份有限公司 消除残影的方法、装置以及显示器
US10134348B2 (en) * 2015-09-30 2018-11-20 Apple Inc. White point correction

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20170221430A1 (en) * 2014-10-02 2017-08-03 Carrier Corporation Liquid crystal display with temperature compensation
CN105679265A (zh) * 2016-03-08 2016-06-15 京东方科技集团股份有限公司 面板补偿装置和方法
CN107274836A (zh) * 2017-08-02 2017-10-20 深圳市华星光电半导体显示技术有限公司 具有温度补偿功能的amoled显示面板及显示装置
CN107731160A (zh) * 2017-10-11 2018-02-23 深圳市华星光电半导体显示技术有限公司 一种应用于显示面板的温度补偿电路、方法及显示面板

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2025040340A1 (en) * 2023-08-24 2025-02-27 Ams-Osram International Gmbh Method for operating a radiation emitting device

Also Published As

Publication number Publication date
CN108831380A (zh) 2018-11-16

Similar Documents

Publication Publication Date Title
WO2019237553A1 (zh) Oled面板温度补偿系统及oled面板温度补偿方法
US10748478B2 (en) OLED panel temperature compensation system and OLED panel temperature compensation method
CN107657919B (zh) Amoled显示装置及其驱动方法
WO2018214258A1 (zh) Oled显示装置的ovss电压降的补偿方法及像素驱动电路
CN104867455B (zh) 补偿amoled电压降的系统及方法
KR101944645B1 (ko) Amoled의 전압강하 보상방법
KR102028504B1 (ko) 보상회로를 포함하는 유기발광 표시장치
US20120236041A1 (en) Active matrix display and method of driving the same
KR20190038148A (ko) 양면 디스플레이
WO2017041343A1 (zh) Amoled实时补偿系统
CN105405405A (zh) 电压降补偿方法及装置、显示装置
TW201413682A (zh) 有機發光二極體顯示裝置
WO2020001003A1 (zh) 显示数据调整系统及显示数据调整方法
US10943968B2 (en) Organic light-emitting display device
US20230154394A1 (en) Display apparatus and control method therefor
CN109036291A (zh) 一种显示面板及其控制方法、显示装置
CN115810323A (zh) 显示装置和显示驱动方法
US12112703B2 (en) Pixel circuit and display device, and mobile terminal including the display device
US11837168B2 (en) Light emitting display device and driving method thereof
KR20190016728A (ko) 유기 발광 표시 장치
KR20160027788A (ko) 유기전계 발광표시장치
US20240257757A1 (en) Pixel circuit and display device including the same
WO2021035808A1 (zh) Oled显示面板
KR102904113B1 (ko) 표시 패널 및 이를 포함하는 표시 장치
CN114708837A (zh) 像素驱动电路及其驱动方法、显示面板、显示装置

Legal Events

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

Ref document number: 18922399

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 18922399

Country of ref document: EP

Kind code of ref document: A1