WO2017213357A1 - Appareil de commande d'affichage et dispositif d'affichage comprenant celui-ci - Google Patents

Appareil de commande d'affichage et dispositif d'affichage comprenant celui-ci Download PDF

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Publication number
WO2017213357A1
WO2017213357A1 PCT/KR2017/005035 KR2017005035W WO2017213357A1 WO 2017213357 A1 WO2017213357 A1 WO 2017213357A1 KR 2017005035 W KR2017005035 W KR 2017005035W WO 2017213357 A1 WO2017213357 A1 WO 2017213357A1
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WO
WIPO (PCT)
Prior art keywords
source driver
pixel
source
sensing line
analog
Prior art date
Application number
PCT/KR2017/005035
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English (en)
Korean (ko)
Inventor
이상민
지승환
김원
최정희
Original Assignee
주식회사 실리콘웍스
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.)
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Application filed by 주식회사 실리콘웍스 filed Critical 주식회사 실리콘웍스
Priority to CN201780035688.9A priority Critical patent/CN109313873B/zh
Publication of WO2017213357A1 publication Critical patent/WO2017213357A1/fr

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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
    • G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
    • G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
    • G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
    • G09G3/3225—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix
    • G09G3/3233—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix with pixel circuitry controlling the current through the light-emitting element
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
    • G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
    • G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
    • G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
    • G09G3/3275—Details of drivers for data electrodes
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
    • G09G3/3611—Control of matrices with row and column drivers
    • G09G3/3685—Details of drivers for data electrodes
    • G09G3/3688—Details of drivers for data electrodes suitable for active matrices only
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2300/00—Aspects of the constitution of display devices
    • G09G2300/08—Active matrix structure, i.e. with use of active elements, inclusive of non-linear two terminal elements, in the pixels together with light emitting or modulating elements
    • G09G2300/0809—Several active elements per pixel in active matrix panels
    • G09G2300/0828—Several active elements per pixel in active matrix panels forming a digital to analog [D/A] conversion circuit
    • 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

Definitions

  • the present invention relates to a display device, and more particularly, to a technique for correcting a characteristic deviation between analog and digital converters embedded in each source driver.
  • a display device includes a display panel, a source driver, a timing controller, and the like.
  • the source driver converts the digital image data provided from the timing controller into a source driving signal and provides it to the display panel.
  • the source driver may be configured as one chip, and a plurality of source drivers may be configured in consideration of the size and resolution of the display panel.
  • the display panel may change the characteristics of the pixel according to the change of time and temperature.
  • the source driver measures the pixel voltage of the display panel, converts it into digital data, and provides it to the timing controller.
  • the prior art performs a batch of characterization of all analog-to-digital converters before connecting the source driver to the display panel, and a process or operation is performed to compensate for the offset characteristic deviations of all analog-to-digital converters. Occurs.
  • the prior art first applies the same reference voltage to the analog-to-digital converter of each source driver to obtain the offset characteristics, and calculates the reference characteristics by calculating the offset characteristics for each source driver, so that all chips have the same output as the reference values.
  • the offset characteristic deviation is corrected.
  • Such a conventional technique generates a lot of time and cost while performing deviation correction on all the offset characteristics of all analog and digital converters, and this time and cost consumption is external to the digital image data whenever the panel information is sensed. Since the compensation becomes difficult to proceed, the external compensation is inaccurate and this may cause image problems such as block dim.
  • the present invention has been made in an effort to provide a display driving device and a display device including the same, which may simplify correction of characteristic deviations between analog and digital converters embedded in each source driver.
  • the present invention has been made in an effort to provide a display driving device capable of accurately correcting a characteristic deviation between analog and digital converters built in each source driver, and a display device including the same.
  • the display driving apparatus of the present invention the first source driver; And a second source driver adjacent to the first source driver, wherein the first source driver and the second source driver share at least one of sensing lines for sensing pixel characteristics of a display panel and are shared. Each pixel signal for the same pixel transmitted through the sensing line is sampled and converted into digital data.
  • the display device of the present invention the first source driver; A second source driver adjacent to the first source driver; A third source driver adjacent to the second source driver;
  • the first source driver and the second source driver share a first sensing line and convert a first pixel signal of a first pixel transmitted through the first sensing line into first digital data, respectively, and the second source A driver and the third source driver share a second sensing line and convert second pixel signals of a second pixel transmitted through the second sensing line into second digital data, respectively;
  • a timing controller including a data processor configured to calculate an offset characteristic deviation between the second source driver and the third source driver through a difference in data.
  • the display driving apparatus of the present invention includes first to n-th source driver;
  • the first to n-th source drivers share a sensing line between adjacent source drivers and convert pixel signals for the same pixel transferred through the sensing line into digital data, respectively;
  • the first to n-th source drivers may include a data processor configured to calculate offset characteristic deviations between the first to n-th source drivers based on a difference between the digital data and the pixel signal of the shared sensing line. do.
  • the present invention can simplify the correction process for the characteristic deviation between the analog-to-digital converter built in each source driver.
  • the present invention can accurately correct the characteristic deviation between the analog and digital converter built in each source driver.
  • the present invention accurately compensates for the characteristic deviation between the analog-to-digital converters embedded in each source driver, so that the pixel-specific characteristics of the display panel can be accurately calculated to compensate for the digital image data.
  • FIG. 1 is a block diagram illustrating a display driving apparatus and a display apparatus including the same according to an exemplary embodiment of the present invention.
  • FIG. 2 is a diagram for describing a sensing line shared in FIG. 1.
  • FIG. 3 is a block diagram illustrating a display driving apparatus and a display apparatus including the same according to another exemplary embodiment of the present invention.
  • FIG. 4 is a block diagram illustrating a display driving apparatus and a display apparatus including the same according to another exemplary embodiment of the present invention.
  • FIG. 1 is a block diagram illustrating a display driving apparatus and a display apparatus including the same according to an exemplary embodiment of the present invention.
  • the display apparatus of the present invention includes a display driving apparatus 100 and a display panel 200.
  • the display driving apparatus 100 includes source drivers 10, 20, and 30 that provide a source driving signal to the display panel 200.
  • the source driver is composed of one chip and the number may be determined in consideration of the size and resolution of the display panel 200. In the present invention, only three source drivers are shown to simplify the description.
  • the display panel 200 may be a liquid crystal panel, an organic light emitting diode (OLED) panel, or the like.
  • the display panel 200 includes a plurality of pixels arranged in a matrix, and includes a driving transistor and a light emitting device for each pixel.
  • the display panel 200 may have different characteristics for each pixel, and the characteristics of the pixels may change according to changes in time and temperature.
  • the display driving apparatus 100 measures the pixel signal of the display panel 200, converts the pixel signal into digital data, and provides the same to the timing controller.
  • the source drivers 10, 20, and 30 of the display driving apparatus 100 include an analog digital converter (ADC) for sampling and converting pixel signals of the display panel 200 into digital data.
  • ADC analog digital converter
  • the digital data corresponding to the pixel signal converted by the analog-to-digital converters 12, 22, and 32 of each source driver 10, 20, and 30 is used to calculate the pixel-specific feature values in the timing controller, and the pixel-specific feature values Can be used to compensate for digital image data.
  • analog-to-digital converters 12, 22, and 32 embedded in the respective source drivers 10, 20, and 30 have different offset characteristics and may change according to changes in the surrounding environment.
  • the present invention discloses a display driving device and a display device including the same, which can simplify the correction of the deviation of the offset characteristics of the analog-to-digital converters 12, 22, and 32.
  • the display driving apparatus 100 includes a source driver 10, a source driver 20 adjacent to the source driver 10, and a source driver 30 adjacent to the source driver 20.
  • the source driver 10 and the source driver 20 share at least one of the sensing lines used to sense the pixel signal of the display panel 200 and for the same pixel transmitted through the shared sensing line SL1. Each pixel signal is sampled and converted into digital data.
  • the source driver 20 and the source driver 30 also share at least one sensing line SL2 among sensing lines for sensing pixel characteristics of the display panel 200, and share the shared sensing line SL2. Each pixel signal for another identical pixel that is passed through is sampled and converted into digital data.
  • the source driver 10 and the source driver 20 may be configured to share the sensing line SL1 connected to the last channel of the analog-to-digital converter 12 with the dummy circuit 24 of the adjacent analog-to-digital converter 22.
  • the source driver 20 and the source driver 30 may be configured to share the sensing line SL2 connected to the last channel of the analog to digital converter 22 with the dummy circuit 34 of the adjacent analog to digital converter 32.
  • the present invention is not limited thereto, and the source drivers 10 and 20 and the source drivers 20 and 30 may be configured to share two adjacent sensing lines.
  • the source driver 20 may convert the dummy circuit 24 for sampling and converting pixel signals of the same pixel transmitted through the sensing line SL1 shared with the source driver 10 into digital data, using an analog-to-digital converter ( 22, the source driver 30 is a dummy circuit 34 for sampling and converting the pixel signal for another identical pixel transmitted through the sensing line SL2 shared with the source driver 20 into digital data.
  • the dummy circuits 24 and 34 are provided inside the analog-to-digital converters 22 and 34, respectively, and are understood as dummy channels for converting pixel signals transmitted through shared sensing lines SL1 and SL2 into digital data. Can be.
  • the sensing line SL1 shared by the source driver 10 and the source driver 20 is connected to the dummy circuit 24 of the source driver 20 through the channel sharing line CSL1, and is connected to the source driver 20 and the source.
  • the sensing line SL2 shared by the driver 30 is connected to the dummy circuit 34 of the source driver 30 through the channel sharing line CSL2.
  • the dummy circuits 24 and 34 may be activated in a section for correcting offset characteristic deviations of the analog to digital converters 12, 22, and 32 between the source drivers 10, 20, and 30.
  • the section for correcting the offset characteristic deviation of the analog to digital converters 12, 22, and 32 may be a power on section or a vertical blank section of the display device.
  • FIG. 2 is a diagram for describing a sensing line shared in FIG. 1.
  • the sensing line SL1 shared by the source driver 10 and the source driver 20 is connected to the pixel circuit 50 of the display panel 200.
  • the display panel 200 includes a gate line GL, a data line DL, a power line PL, and a sensing line SL1, and includes a pixel circuit 50.
  • the pixel circuit 50 includes a gate transistor GTR, a driving transistor DTR, a sensing transistor STR, and a light emitting element LED.
  • the gate driving signal is provided to the gate line GL
  • the gate transistor GTR is turned on, and the source driving signal is applied to the driving transistor DTR through the data line DL.
  • the current I_LED is supplied to the light emitting device LED through the driving transistor DTR, and the light emitting device LED emits light corresponding to the size of the current I_LED.
  • the magnitude of the current I_LED is controlled by the source driving signal Vdata.
  • the source driver 10 and the source driver 20 of the display driving apparatus 100 may output pixel data Vsen of the same pixel of the sensing line SL1 connected to the sensing transistor STR of the pixel circuit 50. Convert each to.
  • the source drivers 10 and 20 transmit the pixel signal Vsen for the same pixel of the display panel 200 transmitted through the shared sensing line SL1 through each of the analog and digital converters 12 and 22. Convert to digital data.
  • the difference of the digital data converted by each of the analog to digital converters 12 and 22 is used to correct the offset characteristic difference.
  • the subject for correcting the offset characteristic difference may be configured to be performed in the display driving apparatus 100 or performed by the timing controller 300 of FIG. 4.
  • the present invention can simply correct the offset characteristic deviation between the analog and digital converters 12 and 22 only by comparing respective digital data for the same pixel output from the adjacent source drivers 10 and 20.
  • the display driving apparatus 100 of the present invention may be configured such that the source drivers 10, 20, and 30 have data processing units 42, 44, and 46 for correcting offset characteristic differences. .
  • the data processor 42 of the source driver 10 provides digital data about the pixel signal transmitted through the sensing line SL1 to the data processor 44 of the adjacent source driver 20, and supplies the digital data of the source driver 20.
  • the data processor 44 provides digital data about the pixel signal transmitted through the sensing line SL2 to the data processor 46 of the adjacent source driver 30.
  • the data processor 44 may convert the analog-to-digital converter 12 and the analog-digital signal through the difference between the digital data converted by the analog-to-digital converter 12 of the source driver 10 and the analog-to-digital converter 22 of the source driver 20.
  • the offset characteristic deviation between the converters 22 is calculated, and the data processing unit 46 is configured to convert the digital data converted by the analog-to-digital converter 22 of the source driver 20 and the analog-to-digital converter 32 of the source driver 30.
  • the difference in offset characteristics between the analog-to-digital converter 22 and the analog-to-digital converter 32 is calculated through the difference.
  • the display driving apparatus 100 corrects the offset characteristic deviation of the adjacent source driver 20 based on the source driver 10, and again corrects the offset characteristic deviation of the adjacent source driver 30 based on the source driver 20. In this way, offset deviation between the source drivers 10, 20, and 30 may be corrected.
  • the source driver 20 corrects the offset characteristic deviation between the source drivers 10 and 20 based on the source driver 10
  • the source driver 30 receives the source signal when the carrier signal is received from the source driver 20.
  • the offset characteristic deviation between the source drivers 20 and 30 may be corrected based on the driver 20.
  • the carrier signal may be defined as a signal that is activated when the offset characteristic deviation from the adjacent source driver is completed.
  • FIG. 4 is a block diagram illustrating a display driving apparatus and a display apparatus including the same according to another exemplary embodiment of the present invention.
  • the display apparatus of the present invention includes a timing controller 300, a display driving apparatus 100, and a display panel 200.
  • the timing controller 300 provides a digital image signal to the display driving apparatus 100, and the display driving apparatus 100 converts the digital image signal into a source driving signal and provides the digital image signal to the display panel 200.
  • the display panel 200 Displays an image corresponding to the source driving signal.
  • the display driving apparatus 100 includes source drivers 10, 20, and 30, and the source driver 10 and the source driver 20 may include at least one of sensing lines for sensing a pixel signal of the display panel 200. One is shared, and each pixel signal for the same pixel transmitted through the shared sensing line SL1 is sampled and converted into digital data.
  • the source driver 20 and the source driver 30 also share at least one sensing line SL2 among sensing lines for sensing pixel characteristics of the display panel 200, and transmit the same through the shared sensing line SL2. Each pixel signal for another identical pixel is sampled and converted into digital data.
  • the source driver 10 and the source driver 20 convert the pixel signals for the same pixel transmitted through the sensing line SL1 into digital data, respectively, and provide the converted digital signals to the timing controller 300, and the source driver 20 and the source The driver 30 converts the pixel signal for another identical pixel transmitted through the sensing line SL2 into digital data, and provides the same to the timing controller 300.
  • the timing controller 300 includes a data processor 40 therein, and the data processor 40 receives digital data for the same pixel from the source driver 10 and the source driver 20, respectively, and the difference of the digital data. Through the calculation of the offset characteristic deviation between the source driver 10 and the source driver 20 through.
  • the data processor 40 of the timing controller 300 receives digital data for another identical pixel from the source driver 20 and the source driver 30, respectively, and the source driver 20 through the difference of the digital data. And offset characteristic deviation between the source driver 30 and the source driver 30.
  • the data processor 40 of the timing controller 300 corrects the offset characteristic deviation between the source drivers 10 and 20 based on the source driver 10, and when the correction is completed, the data driver 40 based on the source driver 20.
  • the offset characteristic deviation between the source drivers 10, 20, and 30 is corrected in such a manner as to correct the offset characteristic deviation between the source drivers 20 and 30.
  • the present invention can easily correct offset characteristic deviation between analog and digital converters built in each source driver only by calculating the difference of digital data output from each adjacent source driver for the pixel signal for the same pixel.
  • time and cost incurred in correcting the offset characteristic deviation compared to the prior art can be reduced, and the offset characteristic can be corrected every time the panel information is sensed, thereby enabling accurate correction.
  • the display panel 200 may have a difference in characteristics (such as a threshold voltage of a transistor in the pixel circuit 50 of FIG. 2) for each pixel, and may change characteristics of pixels according to time and temperature changes.
  • the display driving apparatus 100 measures a pixel signal for each pixel of the display panel 200, converts the pixel signal of each pixel into digital data, and provides the same to the timing controller 300. do.
  • the timing controller 300 calculates feature values for each pixel using digital data corresponding to pixel signals for each pixel, and compensates digital image data using feature values for each pixel.
  • the data processor 40 of the timing controller 300 may generate compensation data for correcting the offset characteristic deviation of the analog-to-digital converter between the source drivers.
  • the present invention can easily correct the offset characteristic deviation between the source drivers 10, 20, and 30, so that the external compensation corresponding to the characteristic of each pixel can be accurately corrected, and the characteristic changes with the change of time and temperature. Image problems such as block dim that may occur can be prevented.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)

Abstract

L'invention concerne un appareil de commande d'affichage capable de simplifier une compensation des différences entre des caractéristiques de convertisseurs analogiques-numériques montés dans des pilotes source, ainsi qu'un dispositif d'affichage comprenant ledit appareil. L'appareil de commande d'affichage comprend : un premier pilote source ; et un second pilote source adjacent au premier pilote source, les premier et second pilotes source partageant au moins une ligne de détection parmi les lignes de détection permettant de détecter les caractéristiques des pixels d'un panneau d'affichage de façon à échantillonner respectivement les signaux d'un pixel identique à partir de la ligne de détection et à convertir ceux-ci en données numériques.
PCT/KR2017/005035 2016-06-09 2017-05-16 Appareil de commande d'affichage et dispositif d'affichage comprenant celui-ci WO2017213357A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201780035688.9A CN109313873B (zh) 2016-06-09 2017-05-16 显示驱动设备以及包括其的显示设备

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Application Number Priority Date Filing Date Title
KR10-2016-0071601 2016-06-09
KR1020160071601A KR102474441B1 (ko) 2016-06-09 2016-06-09 디스플레이 구동 장치 및 이를 포함하는 디스플레이 장치

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WO2017213357A1 true WO2017213357A1 (fr) 2017-12-14

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KR102526249B1 (ko) * 2017-12-19 2023-04-26 엘지디스플레이 주식회사 컨트롤러, 그를 이용한 유기발광표시장치 및 구동방법
KR102453087B1 (ko) * 2017-12-28 2022-10-11 엘지디스플레이 주식회사 표시장치 및 데이터 구동부, 표시장치의 데이터 보상 방법
CN111667794A (zh) 2019-03-07 2020-09-15 三星显示有限公司 源极驱动器及包括其的显示装置
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