WO2015188531A1 - Circuit de commande d'affichage d'un panneau d'affichage, dispositif d'affichage et procédé de commande d'affichage associé - Google Patents

Circuit de commande d'affichage d'un panneau d'affichage, dispositif d'affichage et procédé de commande d'affichage associé Download PDF

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Publication number
WO2015188531A1
WO2015188531A1 PCT/CN2014/087926 CN2014087926W WO2015188531A1 WO 2015188531 A1 WO2015188531 A1 WO 2015188531A1 CN 2014087926 W CN2014087926 W CN 2014087926W WO 2015188531 A1 WO2015188531 A1 WO 2015188531A1
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unit
data
display
display panel
display device
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PCT/CN2014/087926
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English (en)
Chinese (zh)
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袁艳玲
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京东方科技集团股份有限公司
北京京东方视讯科技有限公司
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Publication of WO2015188531A1 publication Critical patent/WO2015188531A1/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
    • 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]

Definitions

  • the present disclosure relates to the field of display technologies, and in particular, to a display control circuit of a display panel, a display device, and a display control method of the display device.
  • the OLED pixel In the current display mode of an organic light emitting diode (OLED) display, the OLED pixel maintains the same brightness level in one frame time by means of a storage capacitor. When the OLED display panel is displayed, it needs to be lit line by line. This display mode is easy to cause visual fatigue to the human eye due to the low refresh rate (the number of times the screen on the screen is refreshed per second).
  • OLED organic light emitting diode
  • Embodiments of the present invention provide a display control circuit for a display panel, a display device, and a display control method for the display device, which can solve the problem of visual fatigue caused by a low refresh rate when using the display mode of the existing display panel. problem.
  • a display control circuit for a display panel includes pixel units and data lines arranged in a matrix, wherein each column of pixel units is connected to one data line, and the display control circuit includes data.
  • At least one data line is connected to the data transmission unit through the at least one controllable switch unit, and one controllable switch unit is connected to only one data line;
  • the control unit is configured to control the switchable switch unit to switch between on and off;
  • the data transmission unit is configured to output data of an image to be displayed to each pixel unit through the data line and via or without the at least one controllable switch unit.
  • a display device includes a display control circuit, a display panel, and a scanning unit of a display panel according to an embodiment of the present invention; each row of pixel units in the display panel is connected to a gate line;
  • the scanning unit is configured to control each of the gate lines to be gated in a set order, so that the pixel unit connected to the gate line can receive the data output by the data transmission unit.
  • a display control method for a display device including:
  • the preset time is a time after a preset time period elapses from a start time at which the gate line is gated;
  • controllable switch units are controlled to be not turned on during the period in which the gate line is gated.
  • the data transmission unit needs to output the image to be displayed by the pixel unit to the pixel unit through the controllable switch unit and the data line.
  • Data therefore, when the gate line connected to the pixel unit of the same row is gated, if there is a data line directly connected to the data transmission unit in the display device, at least one controllable switch unit can be controlled to start conducting at a preset time.
  • the preset time is a time after a preset time period from a start time at which the gate line is gated, so that the row of pixel units does not simultaneously receive data transmitted by the data transmission unit; if the display device does not If there is a data line directly connected to the data transmission unit, the controllable switching units can be turned on at the same time, so that the row of pixel units does not simultaneously receive the data transmitted by the data transmission unit; thus, the pixel unit of the same row does not At the same time, it lights up, thereby improving the refresh rate of the screen on the display panel and reducing visual fatigue.
  • Figure 1 is an image to be displayed on a display panel
  • FIG. 2 is a schematic diagram showing a display order of an image to be displayed shown in FIG. 1 when a display mode is adopted;
  • 3a is a schematic structural diagram of a display control circuit of a display panel according to an embodiment of the present invention.
  • 3b is a second schematic structural diagram of a display control circuit of a display panel according to an embodiment of the present invention.
  • FIG. 4 is a third schematic structural diagram of a display control circuit of a display panel according to an embodiment of the present invention.
  • FIG. 5 is a schematic structural diagram of a display device according to an embodiment of the present disclosure.
  • FIG. 5b is a second schematic structural diagram of a display device according to an embodiment of the present disclosure.
  • FIG. 6 is a schematic structural diagram of a pixel unit according to an embodiment of the present disclosure.
  • FIG. 7 is a flowchart of a display control method of a display device according to an embodiment of the present disclosure.
  • FIG. 8 is a second flowchart of a display control method of a display device according to an embodiment of the present disclosure.
  • FIG. 9 is an image to be displayed in a display device according to an embodiment of the present invention.
  • FIG. 10 is a schematic diagram showing a display sequence of the image shown in FIG. 9 when the display control method of the display device according to the embodiment of the present invention is used;
  • FIG. 11 is a schematic diagram of signals output by a control unit in a display device according to an embodiment of the present invention.
  • FIG. 12 is a third flowchart of a display control method of a display device according to an embodiment of the present invention.
  • the display control circuit, the display device, and the display control method of the display device provided by the embodiment of the present invention can control each of the controllable switch units when the gate lines connected to the pixel units in the same row are gated.
  • the pixel units of the row do not simultaneously receive the data transmitted by the data transmission unit, so that the pixel units of the same row are not lit at the same time, thereby improving the refresh rate of the screen on the display panel.
  • the display sequence thereof is as shown in FIG. 2, firstly, the first row of pixel units in the display panel are simultaneously illuminated; then the display panel The two rows of pixel units are simultaneously illuminated. At this time, the first row of pixel units in the display panel remains lit; then the third row of pixel units in the display panel are simultaneously illuminated. At this time, the first row in the display panel The pixel unit and the second row of pixel units remain lit.
  • the frame frequency of the OLED display panel is 24 Hz, that is, 24 frames are displayed in 1 second, if there are a total of m rows of pixel units in the OLED display panel, then the picture on the OLED display panel is refreshed 24*m times per second due to the display.
  • the more the number of refreshes per second on the panel the more stable the image will be, the more natural the image will be, and the less impact it will have on the eye.
  • the less the number of refreshes per second on the display panel the more the image flickers and shakes, and the faster the eyes are fatigued. Therefore, the display mode shown in FIG. 2 is likely to cause visual fatigue due to the fact that the number of refreshes per second on the display panel is small, that is, the refresh rate is low.
  • a display control circuit of a display panel is provided in the embodiment of the present invention, as shown in FIG. 3a, wherein the display panel 31 includes a pixel unit 32 and a data line 33 arranged in a matrix, wherein each column of pixel units is connected with a different data.
  • the display control circuit includes a data transmission unit 34, a controllable switch unit 35 and a control unit 36;
  • the at least one data line 33 is connected to the data transmission unit 34 through the controllable switch unit 35, and one controllable switch unit 35 is connected to only one data line 33;
  • control unit 36 configured to control each of the controllable switch units 35 to switch between on and off;
  • the data transfer unit 34 is configured to output data of an image that the pixel unit needs to display directly to the respective pixel units through the data line 33 or through the controllable switch unit 35 and the data line 33.
  • the data transmission unit 34, the controllable switch unit 35 and the control unit 36 may be located on the display panel 31 or may be located outside the display panel 31. In FIG. 3, the data transfer unit 34, the controllable switch unit 35, and the control unit 36 are located outside the display panel 31 as an example.
  • each of the data lines 33 is connected to the data transfer unit 34 via a controllable switch unit 35. Also included in FIG. 3b is a display panel 31, a pixel unit 32, and a control unit 36.
  • each data line is connected to the data transmission unit through a controllable switch unit.
  • the structure of the display panel and each data line passing through the controllable switch when there is a data line directly connected to the data transmission unit in the display panel The structure of the display panel when the unit is connected to the data transmission unit is similar, and details are not described herein again.
  • each of the controllable switch units includes a thin film transistor (TFT); the source of each TFT T is connected to the data transfer unit 34, and the drain connection of the TFT T includes the A data line 33 to which the controllable switching unit of the TFT T is connected, and a gate of the TFT T is connected to the control unit 36.
  • TFT thin film transistor
  • the TFT in each of the controllable switching units may be a p-type TFT or an n-type TFT, and an n-type TFT is taken as an example in FIG.
  • each of the controllable switching units may further include a plurality of TFTs, the gates of the plurality of TFTs being connected together and connected to the control unit, and the plurality of TFTs being connected in series/parallel.
  • the display device provided by the embodiment of the present invention includes the display control circuit of the display panel provided by the embodiment of the present invention, the display panel 31 and the scanning unit 51; each row of pixel units in the display panel 31 is connected to a different one. Gate line 52;
  • the scanning unit 51 is configured to control each of the gate lines 52 to be gated in a set order so that The pixel unit connected to the gate line 52 is capable of receiving data output from the data transfer unit 34.
  • controllable switch unit includes a TFT
  • the display device provided by the embodiment of the present invention is as shown in FIG. 5b.
  • the pixel unit in the display device provided by the embodiment of the present invention may adopt the structure shown in FIG. 6.
  • the gate of the first transistor T1 receives the scan signal Scan
  • the source of the first transistor T1 receives the data signal Data
  • the drain of the first transistor T1 is connected to the gate of the second transistor T2
  • the second transistor T2 The source and the source of the third transistor T3 each receive a high level signal Vdd
  • the gate of the third transistor T3 is connected to the drain of the second transistor T2
  • the drain of the third transistor T3 is connected to the anode of the organic light emitting diode OLED, organic
  • the cathode of the light emitting diode OLED is grounded
  • one end of the first capacitor C1 is connected to the gate of the third transistor T3, the other end of the first capacitor C1 is grounded
  • the source of the fourth transistor T4 is connected to the gate of the third transistor T3, and the fourth transistor
  • the gate of T4 receives the reset signal Reset, and the drain of the
  • the scan signal Scan received by the gate of the first transistor T1 is the same as the signal on the gate line connected to the pixel unit. Therefore, when the gate line connected to the pixel unit is gated, the first transistor T1 leads.
  • the data signal Data received by the source of the first transistor T1 is transmitted to the gate of the second transistor T2, the data signal Data is the signal on the data line connected to the pixel unit, and the second transistor T2 is a source follower.
  • the voltage follower, the main function of the second transistor T2 is power amplification; the reset signal Reset received by the gate of the fourth transistor T4 is the same as the signal on the previous gate line of the gate line connected to the pixel unit,
  • the reset signal Reset received by the gate of the fourth transistor T4 is the same as the signal on the previous gate line of the gate line connected to the pixel unit,
  • the fourth transistor T4 is controlled to be turned on by the reset signal reset, thereby giving the l+1th.
  • the capacitance in the pixel unit of the row is discharged, so that the organic light emitting diode OLED is displayed normally.
  • the pixel unit in the display device provided by the embodiment of the present invention may also adopt other structures.
  • FIG. 5a and FIG. 5b show only the structure of the display device when each data line is connected to the data transmission unit through the controllable switch unit.
  • the display device provided by the embodiment of the present invention may also have a direct connection data transmission unit. The case of the data line.
  • the display control method of the display device provided by the embodiment of the present invention, as shown in FIG. 7, includes:
  • control at least one controllable switch unit to start conducting at a preset time during a period in which the gate line is gated.
  • the preset time is a time after a preset time period elapses from a start time at which the gate line is gated;
  • each controllable switch unit is controlled to be turned on at the same time.
  • S702 and S703 have no chronological order in execution, and which one of S702 and S703 is to be executed depends on which condition the structure of the display device satisfies.
  • the structure of the display device When only one data line in the display device is connected to the data transfer unit through the controllable switch unit, the structure of the display device only satisfies the condition that the data line directly connected to the data transfer unit exists in the display device, and therefore, S702 is performed.
  • the structure of the display device When more than two data lines in the display device are connected to the data transmission unit through the controllable switch unit, and the data line directly connected to the data transmission unit exists in the display device, the structure of the display device not only satisfies the existence of direct connection data in the display device The condition of the data line of the transmission unit, and satisfies the condition that at least two data lines in the display device are connected to the data transmission unit through the controllable switch unit. Therefore, S702 can be performed, S703 can also be performed, and a part of the controllable switch unit can also be executed. Execution S702, performing S703 on another part of the controllable switch unit.
  • the controllable switch unit that controls the connection of the data line starts to conduct at a preset time t3, where t3>t1, t3 ⁇ t2, and the preset duration is t3-t1.
  • the refresh rate of the screen on the display panel is improved compared to the refresh rate of the screen when the existing display mode is used, which reduces visual fatigue.
  • each controllable switching unit in the display device can be controlled to be turned on at a preset time t3, where t3>t1, t3 ⁇ t2, and the preset duration is t3.
  • each data line in the display device is connected to the data transmission unit through the controllable switch unit, that is, there is no data line directly connected to the data transmission unit in the display device, the structure of the display device satisfies at least two data in the display device.
  • the line is connected to the strip of the data transmission unit through the controllable switching unit Therefore, to execute S703.
  • each data line in the display device is connected to the data transmission unit through the controllable switch unit, it is assumed that there are 2n columns of pixel units on the display panel, and if a row of pixel units is connected during the period of (t1, t2)
  • the gate line is gated, and the control unit can control the first to n pixel units in the row to receive data transmitted by the data transmission unit during the period of (t1, (t1+t2)/2), and control the row.
  • the n+1th to 2nth pixel unit receives the data transmitted by the data transmission unit during the period of ((t1+t2)/2, t2), so that the 1st to nth pixel units in the row are from the time t1 Start lighting, so that the n+1th to 2nth pixel unit in the row starts to light up from the time of (t1+t2)/2, so that the refresh rate of the picture on the display panel is compared with the existing one.
  • the refresh rate of the screen when the display mode is doubled, which reduces visual fatigue.
  • controlling the respective controllable switch units to be turned on at different times specifically includes: S801, when the gate lines are gated In the segment, the controllable switching units are sequentially turned on in the set order.
  • the control unit can control the first pixel unit in the row.
  • Receiving data transmitted by the data transmission unit during a period of time t1+p*(t2-t1)/2n) wherein p is greater than or equal to 1, and less than or equal to 2n; thereby causing the pth pixel unit in the row Lights up from the time t1+(p-1)(t2-t1)/2n, so that the refresh rate of the screen on the display panel is 2n times the refresh rate of the screen when using the existing display mode, which reduces Visual fatigue.
  • the display panel in the display device of the embodiment of the present invention has n data lines, and the control unit can output the signal shown in FIG. 11 to control the conduction of the TFT, wherein P1 is the first a signal received by the gate of the TFT connected to one data line, P2 is a signal received by the gate of the TFT connected to the second data line, and P3 is a signal received by the gate of the TFT connected to the third data line.
  • Pn-1 is a signal received by the gate of the TFT connected to the n-1th data line, and Pn is a signal received by the gate of the TFT connected to the nth data line.
  • the display control method of the display device provided by the embodiment of the present invention, as shown in FIG. 12, further includes:
  • each controllable switching unit is controlled to be turned off. If the controllable switching unit includes a p-type TFT, that is, a high-level signal is output to the gates of the respective TFTs.
  • the display control method of the display device provided by the embodiment of the present invention is to charge only one pixel unit at a time, for example, first charging the pixel unit of the first row, and first time to the first pixel of the first row.
  • the unit is charged, and the second pixel unit of the first row is charged at the second moment, ..., when the pixel unit of the first row is charged, the pixel unit of the second row is charged, and so on until the last row is One pixel unit is charged.
  • the embodiments of the present invention may be implemented by hardware, or may be implemented by means of software plus a necessary general hardware platform.
  • the technical solution of the embodiment of the present invention may be embodied in the form of a software product, which may be stored in a non-volatile storage medium (which may be a CD-ROM, a USB flash drive, a mobile hard disk, etc.).
  • a number of instructions are included to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform the methods described in various embodiments of the present invention.
  • modules in the apparatus in the embodiments may be distributed in the apparatus of the embodiment according to the description of the embodiments, or the corresponding changes may be located in one or more apparatuses different from the embodiment.
  • the modules of the above embodiments may be combined into one module, or may be further split into multiple sub-modules.

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

La présente invention concerne un circuit de commande d'affichage d'un panneau d'affichage (31), un dispositif d'affichage et un procédé de commande d'affichage associé, qui peuvent résoudre le problème selon lequel une fatigue visuelle est facilement causée par un taux de rafraîchissement relativement bas lorsque la façon d'affichage du panneau d'affichage existant (31) est adoptée. Dans le circuit de commande d'affichage du panneau d'affichage (31), le panneau d'affichage (31) comprend des unités de pixel (32) et des lignes de données (33), qui sont agencées dans une matrice, chaque colonne d'unités de pixel (32) étant connectée à une ligne de données différente (33) ; et le circuit de commande d'affichage comprend une unité de transmission de données (34), des unités de commutation pouvant être commandées (35) et une unité de commande (36), au moins une ligne de données (33) étant connectée à l'unité de transmission de données (34) par le biais de l'unité de commutation pouvant être commandée (35) et une unité de commutation pouvant être commandée (35) est connectée uniquement à une ligne de données (33) ; l'unité de commande (36) est utilisée pour commander diverses unités de commutation pouvant être commandées (35) afin de les activer (ON) ou de les désactiver (OFF) ; et l'unité de transmission de données (34) est utilisée pour délivrer en sortie des données d'images requises pour être affichées par les unités de pixel (32) à diverses unités de pixel (32) par le biais des lignes de données (33) ou par le biais des unités de commutation pouvant être commandées (35) et des lignes de données (33).
PCT/CN2014/087926 2014-06-13 2014-09-30 Circuit de commande d'affichage d'un panneau d'affichage, dispositif d'affichage et procédé de commande d'affichage associé WO2015188531A1 (fr)

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CN201410265018.4A CN104064144B (zh) 2014-06-13 2014-06-13 一种显示面板的显示控制电路、显示装置及显示控制方法
CN201410265018.4 2014-06-13

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CN108986749B (zh) * 2017-06-05 2020-07-10 京东方科技集团股份有限公司 像素单元及驱动方法、显示面板及显示方法、显示装置
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US20040222961A1 (en) * 2003-05-08 2004-11-11 Industrial Technology Research Institute Time-sharing multiplexing driving method and framework for image signal
CN1655223A (zh) * 2004-02-10 2005-08-17 夏普株式会社 显示装置的驱动器电路和显示装置
CN1670807A (zh) * 2004-03-19 2005-09-21 精工爱普生株式会社 电光装置和电子设备
CN1989539A (zh) * 2005-03-31 2007-06-27 卡西欧计算机株式会社 显示驱动装置、显示装置及其驱动控制方法
JP2005242387A (ja) * 2005-05-06 2005-09-08 Seiko Epson Corp 電気光学装置の駆動回路及び電気光学装置並びに電子機器
CN101055697A (zh) * 2006-04-14 2007-10-17 统宝光电股份有限公司 可降低色度不均匀现象的显示影像系统
CN101364378A (zh) * 2008-09-27 2009-02-11 上海广电光电子有限公司 电致发光显示器及其驱动方法
JP2011128562A (ja) * 2009-12-21 2011-06-30 Hitachi Displays Ltd 液晶表示装置
CN103065556A (zh) * 2012-10-22 2013-04-24 友达光电股份有限公司 电致发光显示面板及其驱动方法
CN202838916U (zh) * 2012-10-23 2013-03-27 京东方科技集团股份有限公司 像素驱动电路及显示装置
CN104064144A (zh) * 2014-06-13 2014-09-24 北京京东方视讯科技有限公司 一种显示面板的显示控制电路、显示装置及显示控制方法

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