WO2017213357A1 - Display driving apparatus and display device including same - Google Patents

Display driving apparatus and display device including same Download PDF

Info

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
Authority
WO
WIPO (PCT)
Prior art keywords
source driver
pixel
source
sensing line
analog
Prior art date
Application number
PCT/KR2017/005035
Other languages
French (fr)
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.)
Filing date
Publication date
Application filed by 주식회사 실리콘웍스 filed Critical 주식회사 실리콘웍스
Priority to CN201780035688.9A priority Critical patent/CN109313873B/en
Publication of WO2017213357A1 publication Critical patent/WO2017213357A1/en

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
    • 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.

Abstract

Disclosed are a display driving apparatus capable of simplifying a compensation for the differences between characteristics of analog-to-digital converters mounted within source drivers respectively, and a display device including the same. The display driving apparatus comprises: a first source driver; and a second source driver adjacent to the first source driver, wherein the first and second source drivers share at least one sensing line among sensing lines for sensing the characteristics of pixels of a display panel, so as to sample pixel signals of an identical pixel from the sensing line and convert the same into digital data, respectively.

Description

디스플레이 구동 장치 및 이를 포함하는 디스플레이 장치Display driving device and display device including same
본 발명은 디스플레이 장치에 관한 것으로, 더 상세하게는 각 소스 드라이버에 내장된 아날로그 디지털 컨버터 간의 특성 편차를 보정하는 기술에 관한 것이다.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.
일반적으로 디스플레이 장치는 디스플레이 패널, 소스 드라이버 및 타이밍 컨트롤러 등을 포함한다. 소스 드라이버는 타이밍 컨트롤러로부터 제공되는 디지털 영상 데이터를 소스 구동 신호로 변환하고, 이를 디스플레이 패널에 제공한다. 소스 드라이버는 하나의 칩(Chip)으로 구성되고, 디스플레이 패널의 크기와 해상도를 고려하여 복수 개로 구성될 수 있다.In general, 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.
한편, 디스플레이 패널은 시간 및 온도의 변화에 따라서 픽셀의 특성이 변화 될 수 있다. On the other hand, the display panel may change the characteristics of the pixel according to the change of time and temperature.
이러한 픽셀의 특성 변화를 외부보상 방식으로 디지털 영상 데이터에 보상하기 위해, 소스 드라이버는 디스플레이 패널의 픽셀 전압을 측정하고 디지털 데이터로 변환하여 타이밍 컨트롤러에 제공한다.In order to compensate for the characteristic change of the pixel to the digital image data in an external compensation method, the source driver measures the pixel voltage of the display panel, converts it into digital data, and provides it to the timing controller.
그런데, 각각의 소스 드라이버에 내장된 아날로그 디지털 변환기들은 서로 다른 오프셋(offset) 특성을 갖고 있기 때문에 오프셋을 보정하기 위한 과정이 필요하다.However, since analog-to-digital converters embedded in each source driver have different offset characteristics, a process for correcting offsets is required.
이를 위해 종래 기술은 소스 드라이버를 디스플레이 패널에 연결하기 전에 모든 아날로그 디지털 변환기의 특성 평가를 일괄적으로 수행하고, 모든 아날로그 디지털 변환기의 오프셋 특성 편차를 보정하기 위해 공정 또는 작업이 진행되면서 시간과 비용이 발생한다.To this end, 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.
그리고, 디스플레이 장치의 동작 중에도 주변 환경 변화에 의한 아날로그 디지털 변환기의 특성 변화가 발생하기 때문에 아날로그 디지털 변환기의 오프셋 편차를 주기적으로 보정하는 과정이 필요하다.In addition, since the characteristic change of the analog-to-digital converter occurs due to the change of the surrounding environment even during the operation of the display device, a process of periodically correcting the offset deviation of the analog-to-digital converter is necessary.
이를 위해 종래 기술은 먼저 동일한 기준 전압을 각 소스 드라이버의 아날로그 디지털 변환기에 인가하여 오프셋 특성을 구하고, 소스 드라이버 별 오프셋 특성을 연산 처리하여 기준 값을 정하며, 모든 칩이 기준 값과 동일한 출력을 갖도록 하는 방식으로 오프셋 특성 편차를 보정한다.To this end, 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.
이와 같은 종래 기술은 모든 아날로그 디지털 변환기의 오프셋 특성에 대해서, 일괄적으로 편차보정을 진행하면서 많은 시간과 비용이 발생하고, 이러한 시간과 비용 소모가 패널 정보를 센싱할 때 마다 디지털 영상 데이터에 대한 외부보상이 진행되기 어렵게 만들므로, 외부 보상이 부정확해지고 이로 인해 블록 딤 같은 화상 문제가 발생할 수 있다.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.
본 발명이 해결하고자 하는 기술적 과제는 각 소스 드라이버에 내장된 아날로그 디지털 컨버터 간의 특성 편차에 대한 보정을 간소화할 수 있는 디스플레이 구동 장치 및 이를 포함하는 디스플레이 장치를 제공하는데 있다.SUMMARY OF THE INVENTION 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.
본 발명이 해결하고자 하는 기술적 과제는 각 소스 드라이버에 내장된 아날로그 디지털 컨버터 간의 특성 편차를 정확히 보정할 수 있는 디스플레이 구동 장치 및 이를 포함하는 디스플레이 장치를 제공하는데 있다.SUMMARY OF THE INVENTION 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.
본 발명의 디스플레이 구동 장치는, 제1 소스 드라이버; 및 상기 제1 소스 드라이버와 인접한 제2 소스 드라이버;를 포함하고, 상기 제1 소스 드라이버와 상기 제2 소스 드라이버는 디스플레이 패널의 픽셀 특성을 센싱하기 위한 센싱 라인들 중 적어도 하나를 공유하고, 공유되는 상기 센싱 라인을 통해 전달되는 동일한 픽셀에 대한 픽셀 신호를 각각 샘플링하며 디지털 데이터로 변환한다. 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.
본 발명의 디스플레이 장치는, 제1 소스 드라이버; 상기 제1 소스 드라이버와 인접한 제2 소스 드라이버; 상기 제2 소스 드라이버와 인접한 제3 소스 드라이버; 상기 제1 소스 드라이버와 상기 제2 소스 드라이버는 제1 센싱 라인을 공유하며 상기 제1 센싱 라인을 통해서 전달되는 제1 픽셀의 제1 픽셀 신호를 각각 제1 디지털 데이터로 변환하며, 상기 제2 소스 드라이버와 상기 제3 소스 드라이버는 제2 센싱 라인을 공유하며 상기 제2 센싱 라인을 통해서 전달되는 제2 픽셀의 제2 픽셀 신호를 각각 제2 디지털 데이터로 변환하며; 및 상기 제1 픽셀 신호에 대한 상기 제1 디지털 데이터의 차이를 통해서 상기 제1 소스 드라이버와 상기 제2 소스 드라이버 간의 오프셋(offset) 특성 편차를 연산하고, 상기 제2 픽셀 신호에 대한 상기 제2 디지털 데이터의 차이를 통해서 상기 제2 소스 드라이버와 상기 제3 소스 드라이버 간의 오프셋 특성 편차를 연산하는 데이터 처리부를 포함하는 타이밍 컨트롤러;를 포함한다.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; And calculating an offset characteristic deviation between the first source driver and the second source driver based on a difference of the first digital data with respect to the first pixel signal, and comparing the second digital signal with respect to the second pixel signal. And 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.
본 발명의 디스플레이 구동 장치는 제1 내지 제n 소스 드라이버; 상기 제1 내지 제n 소스 드라이버는 인접한 소스 드라이버 간에 센싱 라인을 공유하고 상기 센싱 라인을 통해서 전달되는 동일한 픽셀에 대한 픽셀 신호를 각각 디지털 데이터로 변환하며; 상기 제1 내지 제n 소스 드라이버는 공유되는 상기 센싱 라인의 상기 픽셀 신호에 대한 상기 디지털 데이터의 차이를 통해서 상기 제1 내지 제n 소스 드라이버 간의 오프셋(offset) 특성 편차를 연산하는 데이터 처리부;를 포함한다.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.
상술한 바와 같이, 본 발명은 각 소스 드라이버에 내장된 아날로그 디지털 컨버터 간의 특성 편차에 대한 보정 과정을 간소화할 수 있다.As described above, the present invention can simplify the correction process for the characteristic deviation between the analog-to-digital converter built in each source driver.
본 발명은 각 소스 드라이버에 내장된 아날로그 디지털 컨버터 간의 특성 편차를 정확히 보정할 수 있다.The present invention can accurately correct the characteristic deviation between the analog and digital converter built in each source driver.
본 발명은 각 소스 드라이버에 내장된 아날로그 디지털 컨버터 간의 특성 편차를 정확히 보정하므로 디스플레이 패널의 픽셀 별 특성을 정확히 연산하여 디지털 영상 데이터에 보상할 수 있도록 지원한다.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.
도 1은 본 발명의 일 실시예에 따른 디스플레이 구동 장치와 이를 포함하는 디스플레이 장치를 도시한 블록도이다.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.
도 2는 도 1에서 공유되는 센싱 라인을 설명하기 위한 도면이다.FIG. 2 is a diagram for describing a sensing line shared in FIG. 1.
도 3은 본 발명의 다른 실시예에 따른 디스플레이 구동 장치와 이를 포함하는 디스플레이 장치를 도시한 블록도이다.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.
도 4는 본 발명의 또 다른 실시예에 따른 디스플레이 구동 장치와 이를 포함하는 디스플레이 장치를 도시한 블록도이다.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.
이하, 첨부된 도면을 참조하여 본 발명의 바람직한 실시예를 상세하게 설명한다. 본 명세서 및 특허청구범위에 사용된 용어는 통상적이거나 사전적 의미로 한정되어 해석되지 아니하며, 본 발명의 기술적 사항에 부합하는 의미와 개념으로 해석되어야 한다.Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the present invention. The terms used in the present specification and claims are not to be construed as being limited to ordinary or dictionary meanings, but should be interpreted as meanings and concepts corresponding to the technical matters of the present invention.
본 명세서에 기재된 실시예와 도면에 도시된 구성은 본 발명의 바람직한 실시예이며, 본 발명의 기술적 사상을 모두 대변하는 것이 아니므로, 본 출원 시점에서 이들을 대체할 수 있는 다양한 균등물과 변형예들이 있을 수 있다.The embodiments described in the specification and the configuration shown in the drawings are preferred embodiments of the present invention, and do not represent all of the technical idea of the present invention, various equivalents and modifications that can replace them at the time of the present application are There may be.
도 1은 본 발명의 일 실시예에 따른 디스플레이 구동 장치와 이를 포함하는 디스플레이 장치를 도시한 블록도이다.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.
도 1을 참고하면, 본 발명의 디스플레이 장치는 디스플레이 구동 장치(100)와 디스플레이 패널(200)을 포함한다.Referring to FIG. 1, the display apparatus of the present invention includes a display driving apparatus 100 and a display panel 200.
디스플레이 구동 장치(100)는 디스플레이 패널(200)에 소스 구동 신호를 제공하는 소스 드라이버들(10, 20, 30)을 포함한다. 소스 드라이버는 하나의 칩(Chip)으로 구성되며, 디스플레이 패널(200)의 크기와 해상도를 고려하여 개수가 결정될 수 있다. 본 발명에서는 설명을 간략화하기 위해 세 개의 소스 드라이버만을 도시한다.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.
디스플레이 패널(200)은 액정 패널, 오엘이디(OLED: Organic Light Emitting Diode) 패널 등이 이용될 수 있다. 디스플레이 패널(200)은 다수의 픽셀들이 매트릭스 형태로 배열되고, 픽셀 별로 구동 트랜지스터와 발광소자를 포함한다. 디스플레이 패널(200)은 픽셀 별로 특성이 차이가 있을 수 있으며, 시간 및 온도의 변화에 따라서 픽셀의 특성이 변화 될 수 있다. 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.
상기와 같은 픽셀 별 특성 차이를 보상하기 위해, 디스플레이 구동 장치(100)는 디스플레이 패널(200)의 픽셀 신호를 측정하고 픽셀 신호를 디지털 데이터로 변환하여 타이밍 컨트롤러에 제공한다. 이러한 디스플레이 구동 장치(100)의 소스 드라이버(10, 20, 30)는 디스플레이 패널(200)의 픽셀 신호를 샘플링하고 디지털 데이터로 변환하는 아날로그 디지털 컨버터(ADC: Analog Digital Convertor)를 포함한다. In order to compensate for the difference in characteristics of each pixel, 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.
각 소스 드라이버(10, 20, 30)의 아날로그 디지털 컨버터(12, 22, 32)에 의해 변환된 픽셀 신호에 상응하는 디지털 데이터는 타이밍 컨트롤러에서 픽셀 별 특성 값을 연산하는데 이용되고, 픽셀 별 특성 값은 디지털 영상 데이터를 보상하는데 이용될 수 있다.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.
그런데, 각각의 소스 드라이버(10, 20, 30)에 내장된 아날로그 디지털 컨버터(12, 22, 32)는 서로 다른 오프셋(offset) 특성을 가지고 있고 주변 환경의 변화에 따라 변화될 수 있다. However, the 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.
따라서, 디스플레이 패널(200)의 픽셀 특성 값을 정확히 연산하여 픽셀 별 특성 값을 디지털 영상 데이터에 보상하기 위해서는 아날로그 디지털 컨버터(12, 22, 32)의 오프셋 특성 편차를 보정해야 한다.Therefore, in order to accurately calculate pixel characteristic values of the display panel 200 and compensate pixel characteristic values for digital image data, offset characteristic deviations of the analog-to- digital converters 12, 22, and 32 must be corrected.
본 발명은 아날로그 디지털 컨버터(12, 22, 32)의 오프셋 특성 편차의 보정을 간소화할 수 있는 디스플레이 구동 장치와 이를 포함하는 디스플레이 장치를 개시한다.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.
디스플레이 구동 장치(100)는 소스 드라이버(10), 소스 드라이버(10)와 인접한 소스 드라이버(20), 및 소스 드라이버(20)와 인접한 소스 드라이버(30)를 포함한다.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.
소스 드라이버(10)와 소스 드라이버(20)는 디스플레이 패널(200)의 픽셀 신호를 센싱하는데 이용되는 센싱 라인들 중 적어도 하나를 공유하고, 공유되는 센싱 라인(SL1)을 통해 전달되는 동일 픽셀에 대한 픽셀 신호를 각각 샘플링하며 디지털 데이터로 변환한다.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.
그리고, 소스 드라이버(20)와 소스 드라이버(30)도 디스플레이 패널(200)의 픽셀 특성을 센싱하기 위한 센싱 라인들 중 적어도 하나의 센싱 라인(SL2)을 공유하고, 공유되는 센싱 라인(SL2)을 통해 전달되는 또 다른 동일 픽셀에 대한 픽셀 신호를 각각 샘플링하며 디지털 데이터로 변환한다.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.
일례로, 소스 드라이버(10)와 소스 드라이버(20)는 아날로그 디지털 컨버터(12)의 마지막 채널에 연결된 센싱 라인(SL1)을 인접한 아날로그 디지털 컨버터(22)의 더미 회로(24)와 공유하도록 구성할 수 있고, 소스 드라이버(20)와 소스 드라이버(30)는 아날로그 디지털 컨버터(22)의 마지막 채널에 연결된 센싱 라인(SL2)을 인접한 아날로그 디지털 컨버터(32)의 더미 회로(34)와 공유하도록 구성할 수 있다. 물론, 이에 한정되는 것은 아니며, 소스 드라이버(10, 20)와 소스 드라이버(20, 30)는 서로 인접한 두 개의 센싱 라인을 공유하도록 구성할 수도 있다.For example, 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. Can be. Of course, 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.
그리고, 소스 드라이버(20)는 소스 드라이버(10)와 공유하는 센싱 라인(SL1)을 통해서 전달되는 동일 픽셀에 대한 픽셀 신호를 샘플링하고 디지털 데이터로 변환하기 위한 더미 회로(24)를 아날로그 디지털 컨버터(22)에 구비하고, 소스 드라이버(30)는 소스 드라이버(20)와 공유하는 센싱 라인(SL2)을 통해서 전달되는 또 다른 동일 픽셀에 대한 픽셀 신호를 샘플링하고 디지털 데이터로 변환하기 위한 더미 회로(34)를 아날로그 디지털 컨버터(32)에 구비한다. 여기서, 더미 회로(24, 34)는 각각 아날로그 디지털 컨버터(22, 34)의 내부에 구비되어, 공유되는 센싱 라인(SL1, SL2)을 통해서 전달되는 픽셀 신호를 디지털 데이터로 변환하는 더미 채널로 이해될 수 있다. 소스 드라이버(10)와 소스 드라이버(20)가 공유하는 센싱 라인(SL1)은 채널 공유 라인(CSL1)을 통해 소스 드라이버(20)의 더미 회로(24)와 연결되고, 소스 드라이버(20)와 소스 드라이버(30)가 공유하는 센싱 라인(SL2)은 채널 공유 라인(CSL2)을 통해 소스 드라이버(30)의 더미 회로(34)와 연결된다.In addition, 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. ) Is provided in the analog-to-digital converter 32. Here, 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.
더미 회로(24, 34)는 소스 드라이버들(10, 20, 30) 간의 아날로그 디지털 컨버터(12, 22, 32)의 오프셋 특성 편차를 보정하는 구간에 활성화될 수 있다. 일례로, 아날로그 디지털 컨버터(12, 22, 32)의 오프셋 특성 편차를 보정하는 구간은 디스플레이 장치의 파워 온(power on) 구간이나 수직 동기 구간(Vertical blank)이 될 수 있다.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. For example, 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.
도 2는 도 1에서 공유되는 센싱 라인을 설명하기 위한 도면이다.FIG. 2 is a diagram for describing a sensing line shared in FIG. 1.
도 2를 참고하면, 소스 드라이버(10)와 소스 드라이버(20)에 의해 공유되는 센싱 라인(SL1)은 디스플레이 패널(200)의 픽셀 회로(50)와 연결된다.Referring to FIG. 2, 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.
디스플레이 패널(200)에는 게이트 라인(GL), 데이터 라인(DL), 전원 라인(PL), 센싱 라인(SL1)이 형성되고, 픽셀 회로(50)를 포함한다. 픽셀 회로(50)에는 게이트 트랜지스터(GTR), 구동 트랜지스터(DTR), 센싱 트랜지스터(STR), 및 발광 소자(LED)가 구비된다. 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.
픽셀 회로(50)는 게이트 라인(GL)에 게이트 구동 신호가 제공되면 게이트 트랜지스터(GTR)가 턴온되고, 데이터 라인(DL)을 통해 소스 구동 신호가 구동 트랜지스터(DTR)에 인가된다. 그러면, 전류(I_LED)가 구동 트랜지스터(DTR)를 통과해 발광 소자(LED)에 공급되고, 발광 소자(LED)는 전류(I_LED)의 크기에 대응하여 발광한다. 전류(I_LED)의 크기는 소스 구동 신호(Vdata)에 의해 조절된다. In the pixel circuit 50, when 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. Then, 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.
디스플레이 구동 장치(100)의 소스 드라이버(10)와 소스 드라이버(20)는 픽셀 회로(50)의 센싱 트랜지스터(STR)와 연결된 센싱 라인(SL1)의 동일한 픽셀에 대한 픽셀 신호(Vsen)를 디지털 데이터로 각각 변환한다.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.
상기와 같이 소스 드라이버(10, 20)는 공유되는 센싱 라인(SL1)을 통해서 전달되는 디스플레이 패널(200)의 동일한 픽셀에 대한 픽셀 신호(Vsen)를 각각의 아날로그 디지털 컨버터(12, 22)를 통해서 디지털 데이터로 변환한다. 각각의 아날로그 디지털 컨버터(12, 22)에 의해 변환된 디지털 데이터의 차이는 오프셋 특성 차이를 보정하는데 이용된다. 오프셋 특성 차이를 보정하는 주체는 디스플레이 구동 장치(100) 내에서 수행되거나 타이밍 컨트롤러(도 4의 300)에서 수행되는 것으로 구성할 수 있다.As described above, 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.
이와 같이 본 발명은 인접한 소스 드라이버(10, 20)로부터 출력되는 동일한 픽셀에 대한 각각의 디지털 데이터를 비교하는 것만으로도 아날로그 디지털 컨버터(12, 22) 간의 오프셋 특성 편차를 간단히 보정할 수 있다.As described above, 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.
도 3을 참고하면, 본 발명의 디스플레이 구동 장치(100)는 오프셋 특성 차이를 보정하는 데이터 처리부(42, 44, 46)를 소스 드라이버들(10, 20, 30)이 구비하는 것으로 구성할 수 있다.Referring to FIG. 3, 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. .
소스 드라이버(10)의 데이터 처리부(42)는 센싱 라인(SL1)을 통해서 전달되는 픽셀 신호에 대한 디지털 데이터를 인접한 소스 드라이버(20)의 데이터 처리부(44)에 제공하고, 소스 드라이버(20)의 데이터 처리부(44)는 센싱 라인(SL2)을 통해서 전달되는 픽셀 신호에 대한 디지털 데이터를 인접한 소스 드라이버(30)의 데이터 처리부(46)에 제공한다.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.
데이터 처리부(44)는 소스 드라이버(10)의 아날로그 디지털 컨버터(12)와 소스 드라이버(20)의 아날로그 디지털 컨버터(22)에 의해 변환된 디지털 데이터의 차이를 통해서 아날로그 디지털 컨버터(12)와 아날로그 디지털 컨버터(22) 간의 오프셋 특성 편차를 연산하고, 데이터 처리부(46)는 소스 드라이버(20)의 아날로그 디지털 컨버터(22)와 소스 드라이버(30)의 아날로그 디지털 컨버터(32)에 의해 변환된 디지털 데이터의 차이를 통해서 아날로그 디지털 컨버터(22)와 아날로그 디지털 컨버터(32) 간의 오프셋 특성 편차를 연산한다.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.
디스플레이 구동 장치(100)는 소스 드라이버(10)를 기준으로 인접한 소스 드라이버(20)의 오프셋 특성 편차를 보정하고, 다시 소스 드라이버(20)를 기준으로 인접한 소스 드라이버(30)의 오프셋 특성 편차를 보정하는 방식으로, 소스 드라이버(10, 20, 30) 간의 오프셋 편차를 보정할 수 있다. 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.
일례로, 소스 드라이버(20)는 소스 드라이버(10)를 기준으로 소스 드라이버(10, 20) 간의 오프셋 특성 편차를 보정하고, 소스 드라이버(30)는 소스 드라이버(20)로부터 캐리어 신호가 수신되면 소스 드라이버(20)를 기준으로 소스 드라이버(20, 30) 간의 오프셋 특성 편차를 보정하는 것으로 구성할 수 있다. 여기서, 캐리어 신호는 인접한 소스 드라이버로부터 오프셋 특성 편차가 완료되면 활성화되는 신호로 정의될 수 있다.For example, the source driver 20 corrects the offset characteristic deviation between the source drivers 10 and 20 based on the source driver 10, and 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. Here, the carrier signal may be defined as a signal that is activated when the offset characteristic deviation from the adjacent source driver is completed.
도 4는 본 발명의 또 다른 실시예에 따른 디스플레이 구동 장치와 이를 포함하는 디스플레이 장치를 도시한 블록도이다.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.
도 4를 참고하면, 본 발명의 디스플레이 장치는 타이밍 컨트롤러(300), 디스플레이 구동 장치(100), 디스플레이 패널(200)을 포함한다.Referring to FIG. 4, the display apparatus of the present invention includes a timing controller 300, a display driving apparatus 100, and a display panel 200.
타이밍 컨트롤러(300)는 디스플레이 구동 장치(100)에 디지털 영상 신호를 제공하고, 디스플레이 구동 장치(100)는 디지털 영상 신호를 소스 구동 신호로 변환하여 디스플레이 패널(200)에 제공하며, 디스플레이 패널(200)은 소스 구동 신호에 대응하여 영상을 표시한다.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.
디스플레이 구동 장치(100)는 소스 드라이버들(10, 20, 30)을 포함하고, 소스 드라이버(10)와 소스 드라이버(20)는 디스플레이 패널(200)의 픽셀 신호를 센싱하기 위한 센싱 라인들 중 적어도 하나를 공유하고, 공유되는 센싱 라인(SL1)을 통해서 전달되는 동일한 픽셀에 대한 픽셀 신호를 각각 샘플링하며 디지털 데이터로 변환한다. 소스 드라이버(20)와 소스 드라이버(30)도 디스플레이 패널(200)의 픽셀 특성을 센싱하기 위한 센싱 라인들 중 적어도 하나의 센싱 라인(SL2)을 공유하고, 공유되는 센싱 라인(SL2)을 통해서 전달되는 또 다른 동일한 픽셀에 대한 픽셀 신호를 각각 샘플링하며 디지털 데이터로 변환한다.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.
소스 드라이버(10)와 소스 드라이버(20)는 센싱 라인(SL1)을 통해 전달되는 동일한 픽셀에 대한 픽셀 신호를 디지털 데이터로 각각 변환하여 타이밍 컨트롤러(300)에 제공하고, 소스 드라이버(20)와 소스 드라이버(30)는 센싱 라인(SL2)을 통해 전달되는 또 다른 동일한 픽셀에 대한 픽셀 신호를 디지털 데이터로 각각 변환하여 타이밍 컨트롤러(300)에 제공한다.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.
타이밍 컨트롤러(300)는 데이터 처리부(40)를 내부에 구비하고, 데이터 처리부(40)는 동일한 픽셀에 대한 디지털 데이터를 소스 드라이버(10)와 소스 드라이버(20)로터 각각 수신하고, 디지털 데이터의 차이를 통해서 소스 드라이버(10)와 소스 드라이버(20) 간의 오프셋(offset) 특성 편차를 연산한다.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.
그리고, 타이밍 컨트롤러(300)의 데이터 처리부(40)는 또 다른 동일 픽셀에 대한 디지털 데이터를 소스 드라이버(20)와 소스 드라이버(30)로터 각각 수신하고, 디지털 데이터의 차이를 통해서 소스 드라이버(20)와 소스 드라이버(30) 간의 오프셋(offset) 특성 편차를 연산한다.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.
그리고, 타이밍 컨트롤러(300)의 데이터 처리부(40)는 소스 드라이버(10)를 기준으로 소스 드라이버(10, 20) 간의 오프셋 특성 편차를 보정하고, 상기 보정이 완료되면 소스 드라이버(20)를 기준으로 소스 드라이버(20, 30) 간의 오프셋 특성 편차를 보정하는 방식으로 소스 드라이버(10, 20, 30) 간의 오프셋 특성 편차를 보정한다.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.
이와 같이 본 발명은 동일 픽셀에 대한 픽셀 신호에 대해, 각각의 인접한 소스 드라이버로부터 출력되는 디지털 데이터의 차이를 계산하는 것만으로도, 각 소스 드라이버에 내장된 아날로그 디지털 컨버터 간의 오프셋 특성 편차를 간단히 보정할 수 있으므로 종래 기술 대비 오프셋 특성 편차를 보정하는데 발생하는 시간과 비용을 절감할 수 있고, 패널 정보가 센싱될 때마다 오프셋 특성을 보정할 수 있으므로, 정확한 보정을 가능하게 한다.As described above, 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. As a result, 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.
한편, 디스플레이 패널(200)은 픽셀 별로 특성(픽셀 회로(도 2의 50) 내의 트랜지스터의 문턱전압 등)의 차이가 있을 수 있으며, 시간 및 온도의 변화에 따라서 픽셀의 특성이 변화 될 수 있다. 상기와 같은 픽셀 별 특성 차이를 보상하기 위해, 디스플레이 구동 장치(100)는 디스플레이 패널(200)의 픽셀 별로 픽셀 신호를 측정하고 각 픽셀들의 픽셀 신호를 디지털 데이터로 변환하여 타이밍 컨트롤러(300)에 제공한다.On the other hand, 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. In order to compensate for the difference in characteristics of each pixel, 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.
타이밍 컨트롤러(300)는 픽셀 별 픽셀 신호에 대응하는 디지털 데이터를 이용하여 픽셀 별 특성 값을 연산하고, 픽셀 별 특성 값을 이용하여 디지털 영상 데이터를 보상한다. 이때, 타이밍 컨트롤러(300)의 데이터 처리부(40)는 소스 드라이버 간의 아날로그 디지털 컨버터의 오프셋 특성 편차를 보정하기 위한 보상 데이터를 생성할 수 있다.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. In this case, 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.
이와 같이 본 발명은 소스 드라이버(10, 20, 30) 간의 오프셋 특성 편차를 간단히 보정할 수 있으므로 픽셀 별 특성에 대응하는 외부보상을 정확히 할 수 있고, 시간과 온도의 변화에 따라 변화되는 특성에 의해 발생할 수 있는 블록 딤 같은 화상 문제를 방지할 수 있다.As described above, 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.

Claims (15)

  1. 제1 소스 드라이버; 및A first source driver; And
    상기 제1 소스 드라이버와 인접한 제2 소스 드라이버;를 포함하고,A second source driver adjacent to the first source driver;
    상기 제1 소스 드라이버와 상기 제2 소스 드라이버는 디스플레이 패널의 픽셀 특성을 센싱하기 위한 센싱 라인들 중 적어도 하나를 공유하고, 공유되는 상기 센싱 라인을 통해 전달되는 동일 픽셀에 대한 픽셀 신호를 각각 샘플링하며 디지털 데이터로 변환하는 디스플레이 구동 장치.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 sample pixel signals of the same pixel transmitted through the shared sensing lines, respectively. Display driving device for converting to digital data.
  2. 제 1 항에 있어서,The method of claim 1,
    상기 제1 소스 드라이버 및 상기 제2 소스 드라이버 중 적어도 하나는, 공유되는 상기 센싱 라인을 통해 전달되는 상기 동일 픽셀에 대한 상기 픽셀 신호를 디지털 데이터로 변환하는 더미 회로를 구비한 아날로그 디지털 컨버터;를 포함하는 디스플레이 구동 장치.At least one of the first source driver and the second source driver includes an analog-to-digital converter having a dummy circuit for converting the pixel signal for the same pixel transmitted through the shared sensing line into digital data. Display driving device.
  3. 제 2 항에 있어서, The method of claim 2,
    상기 더미 회로와 공유되는 상기 센싱 라인을 연결하는 채널 공유 라인;을 더 포함하는 디스플레이 구동 장치.And a channel sharing line connecting the sensing line shared with the dummy circuit.
  4. 제 2 항에 있어서,The method of claim 2,
    상기 더미 회로는 상기 제1 소스 드라이버와 상기 제2 소스 드라이버 간의 아날로그 디지털 컨버터의 특성 편차를 보정하는 구간에 활성화되는 디스플레이 구동 장치.The dummy circuit is activated in a section for correcting a characteristic deviation of the analog-to-digital converter between the first source driver and the second source driver.
  5. 제 1 항에 있어서,The method of claim 1,
    상기 제1 소스 드라이버와 상기 제2 소스 드라이버는 상기 제1 소스 드라이버의 마지막 채널에 연결된 센싱 라인을 인접한 상기 제2 소스 드라이버의 더미 회로와 공유하는 디스플레이 구동 장치.And the first source driver and the second source driver share a sensing line connected to the last channel of the first source driver with a dummy circuit of the adjacent second source driver.
  6. 제 1 항에 있어서,The method of claim 1,
    상기 제1 소스 드라이버와 상기 제2 소스 드라이버는 상기 디스플레이 패널의 픽셀 특성을 디지털 데이터로 변환하기 위한 제1 아날로그 디지털 컨버터와 제2 아날로그 디지털 컨버터를 포함하고, The first source driver and the second source driver include a first analog to digital converter and a second analog to digital converter for converting the pixel characteristics of the display panel into digital data,
    상기 제1 소스 드라이버와 상기 제2 소스 드라이버 중 적어도 하나는 상기 동일 픽셀에 대한 상기 디지털 데이터의 차이를 통해서 상기 제1 아날로그 디지털 컨버터와 상기 제2 아날로그 디지털 컨버터 간의 오프셋(offset) 특성 편차를 연산하는 데이터 처리부;를 At least one of the first source driver and the second source driver calculates an offset characteristic deviation between the first analog digital converter and the second analog digital converter based on a difference of the digital data for the same pixel. Data processing;
    포함하는 디스플레이 구동 장치.Display driving device comprising.
  7. 제 6 항에 있어서,The method of claim 6,
    상기 데이터 처리부는 상기 제1 소스 드라이버와 상기 제2 소스 드라이버 중 적어도 하나를 기준으로 상기 오프셋 특성 편차를 보정하는 디스플레이 구동 장치.And the data processor corrects the offset characteristic deviation based on at least one of the first source driver and the second source driver.
  8. 제1 소스 드라이버;A first source driver;
    상기 제1 소스 드라이버와 인접한 제2 소스 드라이버;A second source driver adjacent to the first source driver;
    상기 제2 소스 드라이버와 인접한 제3 소스 드라이버;A third source driver adjacent to the second source driver;
    상기 제1 소스 드라이버와 상기 제2 소스 드라이버는 제1 센싱 라인을 서로 공유하고 공유되는 상기 제1 센싱 라인을 통해서 전달되는 제1 픽셀에 대한 제1 픽셀 신호를 각각 제1 디지털 데이터로 변환하며, The first source driver and the second source driver share a first sensing line with each other and convert a first pixel signal for a first pixel transmitted through the shared first sensing line into first digital data, respectively.
    상기 제2 소스 드라이버와 상기 제3 소스 드라이버는 제2 센싱 라인을 서로 공유하고 공유되는 상기 제2 센싱 라인을 통해서 전달되는 제2 픽셀에 대한 제2 픽셀 신호를 각각 제2 디지털 데이터로 변환하며; 및The second source driver and the third source driver share a second sensing line with each other and convert second pixel signals for second pixels transmitted through the shared second sensing lines into second digital data, respectively; And
    상기 제1 픽셀 신호에 대한 상기 제1 디지털 데이터의 차이를 통해서 상기 제1 소스 드라이버와 상기 제2 소스 드라이버 간의 오프셋(offset) 특성 편차를 연산하고, 상기 제2 픽셀 신호에 대한 상기 제2 디지털 데이터의 차이를 통해서 상기 제2 소스 드라이버와 상기 제3 소스 드라이버 간의 오프셋 특성 편차를 연산하는 데이터 처리부를 포함하는 타이밍 컨트롤러;Calculate an offset characteristic deviation between the first source driver and the second source driver based on the difference of the first digital data with respect to the first pixel signal, and calculate the second digital data with respect to the second pixel signal. 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 of?
    를 포함하는 디스플레이 장치.Display device comprising a.
  9. 제 8 항에 있어서, The method of claim 8,
    상기 데이터 처리부는 상기 제1 소스 드라이버를 기준으로 상기 제2 소스 드라이버의 오프셋 특성 편차를 보정하고, 상기 제2 소스 드라이버를 기준으로 상기 제3 소스 드라이버의 오프셋 특성 편차를 보정하는 디스플레이 장치.And the data processor corrects the offset characteristic deviation of the second source driver based on the first source driver and corrects the offset characteristic deviation of the third source driver based on the second source driver.
  10. 제 8 항에 있어서, The method of claim 8,
    상기 데이터 처리부는 상기 제1 내지 상기 제3 소스 드라이버 간의 오프셋 특성 편차를 디지털 영상 데이터에 보상하는 디스플레이 장치.And the data processor compensates the offset characteristic deviation between the first and third source drivers to digital image data.
  11. 제 8 항에 있어서,The method of claim 8,
    상기 제1 소스 드라이버 및 상기 제2 소스 드라이버 중 적어도 하나는 공유되는 상기 제1 센싱 라인을 통해 전달되는 상기 제1 픽셀 신호를 상기 제1 디지털 데이터로 변환하는 제1 더미 회로를 구비한 제1 아날로그 디지털 컨버터;를 포함하고,At least one of the first source driver and the second source driver includes a first analog circuit having a first dummy circuit converting the first pixel signal transmitted through the shared first sensing line into the first digital data A digital converter;
    상기 제2 소스 드라이버와 상기 제3 소스 드라이버 중 적어도 하나는 공유되는 상기 제2 센싱 라인을 통해 전달되는 상기 제2 픽셀 신호를 상기 제2 디지털 데이터로 변환하는 제2 더미 회로를 구비한 제2 아날로그 디지털 컨버터;를 포함하는 디스플레이 장치.At least one of the second source driver and the third source driver includes a second analog circuit configured to convert the second pixel signal transmitted through the shared second sensing line into the second digital data; And a digital converter.
  12. 제 8 항에 있어서, The method of claim 8,
    상기 제1 소스 드라이버와 상기 제2 소스 드라이버는 상기 제1 소스 드라이버의 마지막 채널에 연결된 상기 제1 센싱 라인을 인접한 상기 제2 소스 드라이버의 제1 더미 회로와 공유하고,The first source driver and the second source driver share the first sensing line connected to the last channel of the first source driver with a first dummy circuit of the adjacent second source driver,
    상기 제2 소스 드라이버와 상기 제3 소스 드라이버는 상기 제2 소스 드라이버의 마지막 채널에 연결된 상기 제2 센싱 라인을 인접한 상기 제3 소스 드라이버의 제2 더미 회로와 공유하는 디스플레이 장치.And the second source driver and the third source driver share the second sensing line connected to the last channel of the second source driver with a second dummy circuit of the adjacent third source driver.
  13. 제1 내지 제n 소스 드라이버;First to nth source drivers;
    상기 제1 내지 제n 소스 드라이버는 인접한 소스 드라이버 간에 적어도 하나의 센싱 라인을 공유하고, 공유되는 상기 센싱 라인을 통해서 전달되는 동일 픽셀에 대한 픽셀 신호를 각각 디지털 데이터로 변환하며;The first to n-th source drivers share at least one sensing line between adjacent source drivers, and convert pixel signals for the same pixel transmitted through the shared sensing lines into digital data, respectively;
    상기 제1 내지 제n 소스 드라이버는 상기 동일 픽셀의 상기 픽셀 신호에 대한 상기 디지털 데이터의 차이를 통해서 상기 제1 내지 제n 소스 드라이버 간의 오프셋(offset) 특성 편차를 연산하는 데이터 처리부;를 포함하는 디스플레이 구동 장치.The first to n-th source driver may include a data processor configured to calculate an offset characteristic deviation between the first to n-th source drivers based on a difference between the digital data and the pixel signal of the same pixel. drive.
  14. 제 13 항에 있어서,The method of claim 13,
    상기 제1 내지 제n 소스 드라이버는 공유되는 상기 센싱 라인의 상기 픽셀 신호에 대한 상기 디지털 데이터를 인접한 소스 드라이버에게 제공하도록 구성된 디스플레이 구동 장치.And the first to nth source drivers are configured to provide an adjacent source driver with the digital data for the pixel signal of the sensing line shared.
  15. 제 14 항에 있어서,The method of claim 14,
    상기 제1 내지 제n 소스 드라이버는 이전의 소스 드라이버를 기준으로 다음의 소스 드라이버의 오프셋 특성 편차를 순차적으로 보정하는 방식으로 오프셋 특성 편차를 보정하는 디스플레이 구동 장치.And the first to n-th source drivers correct the offset characteristic deviation by sequentially correcting the offset characteristic deviation of the next source driver based on the previous source driver.
PCT/KR2017/005035 2016-06-09 2017-05-16 Display driving apparatus and display device including same WO2017213357A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201780035688.9A CN109313873B (en) 2016-06-09 2017-05-16 Display driving apparatus and display apparatus including the same

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020160071601A KR102474441B1 (en) 2016-06-09 2016-06-09 Display driving device and display device including the same
KR10-2016-0071601 2016-06-09

Publications (1)

Publication Number Publication Date
WO2017213357A1 true WO2017213357A1 (en) 2017-12-14

Family

ID=60578862

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2017/005035 WO2017213357A1 (en) 2016-06-09 2017-05-16 Display driving apparatus and display device including same

Country Status (3)

Country Link
KR (1) KR102474441B1 (en)
CN (1) CN109313873B (en)
WO (1) WO2017213357A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102526249B1 (en) * 2017-12-19 2023-04-26 엘지디스플레이 주식회사 Conroller, organic light emitting display device and drving method using the same
KR102453087B1 (en) * 2017-12-28 2022-10-11 엘지디스플레이 주식회사 Display device, data driver and method for compensating data thereof
CN111667794A (en) 2019-03-07 2020-09-15 三星显示有限公司 Source driver and display device comprising same

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20090085283A (en) * 2008-02-04 2009-08-07 주식회사 포스콘 Apparatus and method of compensating the error of analog to digital converter
KR20100005338A (en) * 2008-07-07 2010-01-15 엘지전자 주식회사 Apparatus and method for calibrating adc of video display device
US20110304489A1 (en) * 2010-06-15 2011-12-15 Zoran Corporation Methods of and arrangements for offset compensation of an analog-to-digital converter
KR20130105401A (en) * 2012-03-13 2013-09-25 후지쯔 세미컨덕터 가부시키가이샤 Analog digital converter (adc) and correction circuit and correction method therefor
KR20130106636A (en) * 2012-03-20 2013-09-30 삼성전자주식회사 Image capture device and signal compensating method of image capture device

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100902219B1 (en) * 2007-12-05 2009-06-11 삼성모바일디스플레이주식회사 Organic Light Emitting Display
KR101493226B1 (en) * 2011-12-26 2015-02-17 엘지디스플레이 주식회사 Method and apparatus for measuring characteristic parameter of pixel driving circuit of organic light emitting diode display device
KR102106300B1 (en) 2013-12-23 2020-05-04 엘지디스플레이 주식회사 Organic Light Emitting Display Device and Method of Driving The Same
KR102102251B1 (en) * 2013-12-24 2020-04-20 엘지디스플레이 주식회사 Organic light emitting display device
KR102167246B1 (en) * 2014-07-03 2020-10-20 엘지디스플레이 주식회사 Display device

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20090085283A (en) * 2008-02-04 2009-08-07 주식회사 포스콘 Apparatus and method of compensating the error of analog to digital converter
KR20100005338A (en) * 2008-07-07 2010-01-15 엘지전자 주식회사 Apparatus and method for calibrating adc of video display device
US20110304489A1 (en) * 2010-06-15 2011-12-15 Zoran Corporation Methods of and arrangements for offset compensation of an analog-to-digital converter
KR20130105401A (en) * 2012-03-13 2013-09-25 후지쯔 세미컨덕터 가부시키가이샤 Analog digital converter (adc) and correction circuit and correction method therefor
KR20130106636A (en) * 2012-03-20 2013-09-30 삼성전자주식회사 Image capture device and signal compensating method of image capture device

Also Published As

Publication number Publication date
CN109313873B (en) 2022-06-03
CN109313873A (en) 2019-02-05
KR102474441B1 (en) 2022-12-06
KR20170139287A (en) 2017-12-19

Similar Documents

Publication Publication Date Title
WO2018084551A1 (en) Display device and panel compensation method thereof
KR102427312B1 (en) Organic light-emitting display panel and organic light-emitting display device
EP3038086B1 (en) Controller source driver ic, display device, and signal transmission method thereof
WO2017213357A1 (en) Display driving apparatus and display device including same
US10089918B2 (en) Display device
US10559640B2 (en) Organic light emitting diode display device
US10665156B2 (en) Voltage compensation device, method for voltage compensation and display device
WO2018164409A1 (en) Pixel sensing device and panel driving device
KR102071298B1 (en) Sample and hold circuit and source driver having the same
KR20180025387A (en) Organic light-emitting display device, controller
WO2013100735A1 (en) Source driver integrated circuit and display device comprising source driver integrated circuit
KR20170064163A (en) Organic light emitting display device and the method for driving the same
WO2018169212A1 (en) Device and method for measuring organic light emitting diode
WO2018124542A2 (en) Sensing circuit of source driver and display device using same
CN108877677B (en) Pixel circuit, display panel, display device and method for driving pixel circuit
US10991288B2 (en) Display driving device
WO2017188529A1 (en) Led display module, display apparatus and controlling method thereof
WO2022164078A1 (en) Oledos pixel compensation circuit for removing substrate effect, and method for controlling same
WO2018026114A1 (en) Display driving device
WO2019027225A1 (en) Organic light emitting display device
KR20160083154A (en) Organic light emitting display device and method for driving the same
WO2019090910A1 (en) Method and device for repairing sensing signal line and display device
WO2020054921A1 (en) METHOD FOR MANUFACTURING μLED PIXEL STRUCTURE BY COMPLETELY REMOVING INTERFERENCE OF DRIVING PMOS THRESHOLD VOLTAGE
KR20210063015A (en) Display driving device and display device including the same
WO2023080287A1 (en) Display driver ic for image correction of amoled

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: 17810480

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: 17810480

Country of ref document: EP

Kind code of ref document: A1