WO2020098003A1 - Architecture de pilotage de pixel, panneau d'affichage et dispositif d'affichage - Google Patents

Architecture de pilotage de pixel, panneau d'affichage et dispositif d'affichage Download PDF

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Publication number
WO2020098003A1
WO2020098003A1 PCT/CN2018/118571 CN2018118571W WO2020098003A1 WO 2020098003 A1 WO2020098003 A1 WO 2020098003A1 CN 2018118571 W CN2018118571 W CN 2018118571W WO 2020098003 A1 WO2020098003 A1 WO 2020098003A1
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data line
plane data
type
substrate
driving
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PCT/CN2018/118571
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English (en)
Chinese (zh)
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胡云川
纪飞林
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惠科股份有限公司
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Publication of WO2020098003A1 publication Critical patent/WO2020098003A1/fr

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    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
    • G02F1/1362—Active matrix addressed cells
    • G02F1/136286—Wiring, e.g. gate line, drain line

Definitions

  • the present application relates to the field of display technology, in particular to a pixel driving architecture, a display panel, and a display device.
  • Liquid crystal display (Liquid Crystal) (LCD) is widely used in the display screen of notebook computers, mobile phones, etc. due to its advantages such as lightness, thinness, power saving and no radiation.
  • Full HD LCD panels often use flip pixel structure. In order to avoid color shift, the horizontal polarity is often set to 1 + 2line form (ie +-++-+).
  • the output chip of the drive signal includes S1-S6, where S1-S5 all have 960 drive signal outputs, and the polarity corresponding to each four drive signals is positive, negative, negative, positive Repeated arrangement, and S6 has 966 drive signal outputs, which can not achieve the same polarity arrangement as S1-S5, resulting in discontinuous horizontal polarity at the junction of S5 and S6, so that the corresponding display panel at the junction of S5 and S6 Stripes are apt to appear during display. Therefore, the display driving effect of the inverted pixel driving structure of the conventional full high-definition display panel is poor.
  • a pixel driving architecture a display panel, and a display device are provided.
  • a pixel driving architecture includes:
  • a second in-plane data line, a virtual data line is provided between the first in-plane data line and the second in-plane data line, the first in-plane data line and the second in-plane data line are respectively Connect the corresponding pixel unit;
  • a first type of driving chip is respectively connected to the first in-plane data line through a first output data line;
  • the second-type driver chip is sequentially connected to the virtual data line and the second in-plane data line through a second output data line.
  • a display panel including:
  • a pixel driving architecture includes a first in-plane data line; a second in-plane data line, a virtual data line is provided between the first in-plane data line and the second in-plane data line, so The first in-plane data line and the second in-plane data line are respectively connected to corresponding pixel units; a first type of driving chip, the first type of driving chip is respectively connected to the first in-plane through the first output data line Data lines are correspondingly connected; and a second type of driving chip, the second type of driving chip is sequentially connected to the virtual data line and the second in-plane data line through the second output data line;
  • a first substrate, the first in-plane data line and the second in-plane data line are placed on the first substrate;
  • a second substrate the first substrate being opposite to the second substrate
  • a liquid crystal layer is interposed between the first substrate and the second substrate.
  • a display device includes a backlight module and a display panel.
  • the display panel includes:
  • a pixel driving architecture includes a first in-plane data line; a second in-plane data line, a virtual data line is provided between the first in-plane data line and the second in-plane data line, so The first in-plane data line and the second in-plane data line are respectively connected to corresponding pixel units; a first type of driving chip, the first type of driving chip is connected to the first in-plane through the first output data line Data lines are correspondingly connected; and a second type of driving chip, the second type of driving chip is sequentially connected to the virtual data line and the second in-plane data line through the second output data line;
  • a first substrate, the first in-plane data line and the second in-plane data line are placed on the first substrate;
  • a second substrate the first substrate being opposite to the second substrate
  • a liquid crystal layer is interposed between the first substrate and the second substrate.
  • FIG. 1 is a schematic diagram of a pixel driving architecture in an embodiment
  • FIG. 2 is a schematic diagram of a pixel driving architecture in another embodiment
  • FIG. 3 is a schematic diagram of the correspondence between the polarity and the in-plane data line, the driving chip, and the output data line in an embodiment.
  • a pixel driving architecture includes: a first in-plane data line 100; a second in-plane data line 200, and dummy data is provided between the first in-plane data line 100 and the second in-plane data line 200
  • Line 500 the first in-plane data line 100 and the second in-plane data line 200 are respectively connected to corresponding pixel units
  • the first type driving chip 300, the first type driving chip 300 respectively communicates with the first surface through the first output data line 310
  • the internal data lines 100 are correspondingly connected; the second type of driving chip 400, which is correspondingly connected to the virtual data line 500 and the second in-plane data line 200 in sequence through the second output data line 410.
  • the in-plane data line refers to a data line that transmits the driving signal output from the driving chip (that is, the first type driving chip and the second type driving chip) to the corresponding pixel unit, and is connected to the pixel unit.
  • the type of drive control chip that provides the drive signal divides the in-plane data line into a first in-plane data line 100 and a second in-plane data line 200.
  • scan lines arranged in the first direction and in-plane data lines arranged in the second direction ie, the first in-plane data line 100 and the second in-plane data line 200
  • a plurality of pixel units arranged in an array are defined at the intersection with the in-plane data line insulation.
  • the array substrate row drive (Gate Driver on Array, GOA) circuit is connected to the scanning line to provide scanning signals for the pixel unit;
  • the first type of driving chip 300 is connected to the first in-plane data line 100 through the first output data line 310, the first
  • the second-type driving chip 400 is connected to the second in-plane data line 200 through the second output data line 410 to provide driving data signals for the pixel unit, and then displays the corresponding image on the display panel.
  • the driving slice in the full high-definition liquid crystal display panel includes the first type driving chip and the second type driving chip.
  • the corresponding output polarities of the first type drive chip and the second type drive chip in the horizontal direction will also be inconsistent, resulting in the first
  • the horizontal polarities corresponding to the junctions of the driver chips of the second type and the driver chips of the second type are discontinuous, and stripes are generated when the pixel unit performs display.
  • the corresponding The data lines in the two planes are connected to the dummy data line, and the inserted dummy data line will not drive the pixel unit, and the output signal of horizontal polarity discontinuity will be suspended, making the output signal of the pixel unit drive in the horizontal direction It skips the second output data line connected to the virtual output data line, and forms a continuous polarity in the horizontal direction to avoid the occurrence of stripes at the part during display. Compared with the traditional pixel driving method, it has a better display driving effect.
  • the number of virtual data lines 500 is two.
  • the polarities of the driving signals output by the first type driving chip 300 are repeatedly arranged in a unit of "+-+", which can effectively avoid the occurrence of color shift problems.
  • the output driving signal of the first type driving chip 300 is an integer multiple of four, that is, the polarity of the driving signal output by the first type driving chip 300 in the horizontal direction can be kept continuous.
  • the number of in-plane data line lines is one more than that of the pixel columns, and the corresponding number of driving signals output by the corresponding second type driving chip 400 should be greater than the number of driving signals output by the first type driving chip 300.
  • each pixel unit has a corresponding driving signal input.
  • the data line 100 in the first plane and the data in the second plane Two virtual data lines 500 are inserted between the lines 200.
  • the horizontal polarity corresponding to the driving signal output by the second type driving chip 400 is "-++-++-++ ......", and the first The horizontal polarity of the first-type driver chip 300 adjacent to the second-type driver chip 400 is "+-+", in order to keep the polarity in the horizontal direction consistent with the first-type driver chip 300, that is, the second type
  • the polarity of the water product in the driving chip 400 adjacent to the first type driving chip 300 is also "+-+", and the output signal of the second type driving chip 400 is closer to the portion of the first type driving chip 300
  • the second output data lines 410 corresponding to the horizontal polarity "-+” are respectively connected to the virtual data lines 500, and the drive signal corresponding to the "-+” polarity is short-circuited. Therefore, the horizontal polarity corresponding to the output signals of the first type driving chip 300 and the second type driving chip 400 is "+-+” "+-++-++ ......", thereby ensuring the level The polarity in the direction is continuous.
  • the number of the first type driving chips 300 is two or more, and the number of the second type driving chips 400 is one.
  • the number and arrangement of pixel units are inconsistent, so that in different types of display panels, the number of driving chips used to provide drive data signals for the pixel units is not unique of.
  • the number of in-plane data lines is one more than the number of pixel columns, and thus the types of driving chips that provide driving signals for pixel units are also inconsistent, that is, the first type of driving The number of driving signals output by the chip 300 does not match the number of driving signals output by the second type driving chip 400.
  • the amount of output data corresponding to the second type drive chip 400 is greater than the amount of output data of the first type drive chip 300, and correspondingly connects a portion of the second output data line 410 corresponding to the second type drive chip 400 to
  • the dummy data line 500 outputs the output signal corresponding to the discontinuous polarity through the dummy data line 500 without driving the pixel unit, and keeps the output signal for driving the pixel unit in the first type driving chip 300 and the second type driving chip 400 Keep it continuous to avoid streaking.
  • the number of the first type of driving chips 300 is five. Specifically, the number of the first-type driving chips 300 is five, and the horizontal polarity corresponding to the driving signal of each first-type driving chip 300 is repeatedly arranged in a unit of "+-+" to ensure that the first The horizontal polarity in one direction is continuous.
  • the number of output signals of the second type driving chip 400 and the first type driving chip 300 are inconsistent, and the second output data line 410 adjacent to the horizontal polarity is connected to the virtual data line 500 by connecting the virtual data line 500, so that the horizontal Keep the polarity continuous in the direction.
  • the number of first output data lines 310 corresponding to each first-type driving chip 300 is 960
  • the number of second output data lines 410 is 966.
  • there are 960 driving signals output by the first type driving chip 300 and each driving signal is transmitted to the first in-plane data line 100 via a first output data line 310 respectively for corresponding The driving of the pixel unit; there are 966 driving signals output by the second type of driving chip 400, but the number of corresponding data lines 200 in the second plane is only 961, if the traditional second output data line 410 is directly used
  • the remaining second output data lines 410 that are not connected to the second in-plane data line 200 are directly suspended, and the corresponding five output drive signals do not drive the pixel unit, which will result in Streaks are easily generated during display.
  • the second output data line 410 far from the boundary between the first in-plane data line 100 and the second in-plane data line 200 is the second output data line S966, the second output data line S965, and the second output From the data line S964 to the second output data line S1, the second in-plane data line 200 in the same direction is the second in-plane data line D961, the second in-plane data line D960, and the second in-plane data line D959 ...
  • the driving signals output by the second type driving chip 400 through the second output data line 410 are kept continuous in the horizontal direction.
  • the second output data line 410 is sequentially connected to the virtual data line 500 and the second in-plane data line 200, the remaining second output data line 410 is suspended.
  • the second output data lines S966 and the second The output data lines S965 are respectively connected to the virtual data lines 500
  • the second output data lines S964 are connected to the second in-plane data lines D961
  • the second output data lines S963 are connected to the second in-plane data lines D960 until the second output data lines S4 is connected to the second in-plane data line D1, and the remaining second output data line S3, second output data line S2, and second output data line S1 are directly suspended without any connection, that is, the corresponding output drive signal will not be
  • the driving of the pixel unit ensures the corresponding connection between one second output data line 410 and one second in-plane data line
  • the pixel driving architecture further includes a logic board 600, and the first type driving chip 300 and the second type driving chip 400 are respectively connected to the logic board 600.
  • the logic board 600 (Timer Control Register, TCON) is also called a screen driver board or a central control board.
  • the function of the logic board 600 is to convert the LVDS (Low Voltage Differential Signaling) image input signals (including RGB data signals, clock signals, and control signals) transmitted by the digital board through the logic board 600 and convert them into energy. Drive the LVDS signal of the LCD screen, and then send it to the LVDS receiver chip of the LCD screen.
  • LVDS Low Voltage Differential Signaling
  • the first type driving chip 300 includes a first type driving chip S1, a first type driving chip S2, a first type driving chip S3, a first Class 4 driver chip S4, Class 1 driver chip S5, Class 2 driver chip S6, where TCON uses a two-port miniature differential signal interface to transmit LVDS signals for Class 1 driver chip 300 and Class 2 driver chip 400, respectively.
  • (Ie 1port) LVDS is transmitted to the first type driver chip S1, the first type driver chip S2 and the first type driver chip S3, and then outputs the corresponding drive signal to drive the pixel unit; the second port (ie 2port) LVDS Transmitted to the first type drive chip S4, the first type drive chip S4 and the second type drive chip S6, and then output the corresponding drive signal to drive the pixel unit.
  • a dummy data line 500 is inserted between the first in-plane data line 100 and the second in-plane data line 200, and the second type of driving chip 400 is connected to the dummy data line 500 and the second in turn through the second output data line 410
  • the in-plane data line 200 connects the second output data line 410 adjacent to the first output data line 310 to the dummy data line 500 without driving the pixel unit, thereby ensuring the second output data line driving the pixel unit
  • the horizontal polarity corresponding to 410 is consistent with the horizontal polarity of the first output data line 310 for driving the pixel unit, to avoid the occurrence of stripes during display, and has a good display driving effect compared with the conventional pixel driving method.
  • a display panel includes the above pixel driving structure, and: a first substrate, a first in-plane data line and a second in-plane data line are placed on the first substrate; a second substrate, the first substrate and the second substrate are oppositely arranged; The liquid crystal layer is disposed between the first substrate and the second substrate.
  • the pixel driving architecture may specifically be the pixel driving architecture described in any of the foregoing embodiments, and the specific structure has been explained in detail in the foregoing embodiments, and will not be repeated here.
  • the in-plane data line refers to a data line that transmits the driving signal output by the driving chip to the corresponding pixel unit and is connected to the pixel unit, and divides the in-plane data line according to the type of the drive control chip that provides the driving signal It is the first in-plane data line and the second in-plane data line.
  • the display panel further includes pixel units arranged in an array, and the pixel units are disposed on the first substrate.
  • scan lines arranged in the first direction and in-plane data lines arranged in the second direction ie, first in-plane data lines and second in-plane data lines
  • first in-plane data lines and second in-plane data lines are often provided on the first substrate.
  • a plurality of pixel units arranged in an array are defined at the intersection with the in-plane data line insulation.
  • the row drive circuit of the array substrate is connected to the scanning line to provide scanning signals for the pixel unit;
  • the first type of driving chip is connected to the first in-plane data line through the first output data line, and the second type of driving chip is connected to the second output data line
  • the second in-plane data line is connected to provide driving data signals for the pixel unit, and then the corresponding image is displayed on the display panel.
  • the corresponding The data lines in the two planes are connected to the dummy data line, and the inserted dummy data line will not drive the pixel unit, and the output signal of horizontal polarity discontinuity will be suspended, making the output signal of the pixel unit drive in the horizontal direction It skips the second output data line connected to the virtual output data line to form a continuous polarity in the horizontal direction, avoids the occurrence of stripes at the part during display, and has a better display driving effect.
  • the pixel unit includes a red (Red, R) color pixel unit, a green (Green, G) color pixel unit, a blue (Blue, B) color pixel unit, and a white (White, W) color pixel unit.
  • the pixel unit of the array substrate is set to four colors of RGBW, which is applied to the display device, and only the white pixel unit needs to be provided with a corresponding transparent area on the color filter, which can improve the light transmittance of the color filter and reduce the backlight Energy consumption of the module.
  • the specific arrangement of the RGBW four-color pixel units can be arranged according to actual usage. For example, in one embodiment, the pixel units in each pixel row are arranged in a RGBW four-color cycle.
  • the pixel unit includes a red pixel unit, a green pixel unit, and a blue pixel unit, and the pixel units may also be arranged in a cyclic manner of RGB three-color pixel units.
  • the first substrate is an array substrate
  • the second substrate is a color filter substrate.
  • the array substrate is a thin film transistor array substrate.
  • Color filter is a kind of optical filter substrate that expresses color. It can accurately select the light passing through a certain wavelength range and reflect the light of other wavelengths.
  • the basic structure of the color film substrate is composed of a glass substrate (Glass Substrate), a black matrix (Black Matrix), a color layer (Color Layer), a protective layer (Over Coat) and an ITO conductive film.
  • Liquid crystal refers to the fact that after the molten state or the solvent is dissolved, the rigidity of the solid substance is lost, and the fluidity of the liquid is obtained, and the anisotropic order of the molecules of some crystalline substances is retained, forming a kind of crystal and Substances in the liquid state that are intermediate in nature.
  • a liquid crystal layer formed by liquid crystal molecules is arranged between the array substrate and the color filter substrate. When the power is turned on, the arrangement becomes orderly, so that the light passes easily; when the power is not turned on, the arrangement is disordered to prevent the light from passing.
  • the display panel is a full high definition liquid crystal display panel (FHD).
  • FHD full high definition liquid crystal display panel
  • the in-plane data line corresponding to the first type driving chip 300 and the second type driving chip 400 A virtual data line 500 is inserted between the corresponding in-plane data lines, and the corresponding second in-plane data line 200 at the junction of the first in-plane data line 100 and the second in-plane data line 200 is connected to the virtual data line 500, and the inserted
  • the virtual data line 500 does not drive the pixel unit, and the output signal with horizontal polarity discontinuity is about to float, so that the horizontal polarity of the output signal for driving the pixel unit skips the second output connected to the virtual output data line 500
  • the data line 200 is formed with continuous polarities in the horizontal direction to avoid the occurrence of stripes in the area during display.
  • a dummy data line is inserted between the first in-plane data line and the second in-plane data line, and the second type of driving chip sequentially connects the dummy data line and the second side through the second output data line Internal data line, connect the second output data line adjacent to the first output data line to the dummy data line, and do not drive the pixel unit, thereby ensuring that the horizontal polarity corresponding to the second output data line driving the pixel unit is The horizontal polarity of the first output data line driven by the pixel unit remains the same, avoids the generation of stripes during display, and has a good display effect.
  • a display device includes a backlight module and the above display panel.
  • the display panel may specifically be the display panel described in any of the foregoing embodiments, and the specific structure has been explained in detail in the foregoing embodiments, and will not be repeated here.
  • the in-plane data line refers to a data line that transmits the driving signal output by the driving chip to the corresponding pixel unit and is connected to the pixel unit, and divides the in-plane data line according to the type of the drive control chip that provides the driving signal It is the first in-plane data line and the second in-plane data line.
  • scan lines arranged in the first direction and in-plane data lines arranged in the second direction ie, first in-plane data lines and second in-plane data lines
  • scan lines and planes are often provided on the substrate
  • a plurality of pixel units arranged in an array are defined at the insulation intersections of the inner data lines.
  • the row drive circuit of the array substrate is connected to the scanning line to provide scanning signals for the pixel unit; the first type of driving chip is connected to the first in-plane data line through the first output data line, and the second type of driving chip is connected to the second output data line
  • the second in-plane data line is connected to provide driving data signals for the pixel unit, and then the corresponding image is displayed on the display panel.
  • the corresponding The data lines in the two planes are connected to the dummy data line, and the inserted dummy data line will not drive the pixel unit, and the output signal of horizontal polarity discontinuity will be suspended, making the output signal of the pixel unit drive in the horizontal direction It skips the second output data line connected to the virtual output data line to form a continuous polarity in the horizontal direction, avoids the occurrence of stripes at the part during display, and has a better display driving effect.
  • the display device further includes a first polarizer disposed on the side of the first substrate away from the liquid crystal layer, and a second polarizer disposed on the side of the second substrate away from the liquid crystal layer.
  • the liquid crystal material is placed between two pieces of transparent conductive glass attached with a polarizer with a vertical optical axis, and liquid crystal molecules are distributed parallel to the transparent conductive glass when no voltage is applied, and the two pieces of transparent conductive glass are respectively equipped with
  • the liquid crystal molecules are sequentially arranged in accordance with the direction of the fine grooves of the alignment film. If no electric field is applied, the light enters from the second polarizer and its polarization direction rotates 90 degrees according to the arrangement of the liquid crystal molecules.
  • the first polarizer is emitted and is now in a bright state.
  • the backlight module is an edge-lit backlight module.
  • the edge-lit backlight module means that the light source (Edge) is disposed on the side of the light guide plate, and the light guide plate illuminates the light evenly behind the liquid crystal panel.
  • the design of the edge-lit backlight module makes the display device have the advantages of light weight, thin, narrow frame and low power consumption. It can be understood that, in other embodiments, the backlight module may also be a direct type backlight module or a hollow type backlight module, as long as it can provide a corresponding light source for the display device.
  • a dummy data line is inserted between the first in-plane data line and the second in-plane data line, and the second type of driving chip sequentially connects the dummy data line and the second plane through the second output data line Internal data line, connect the second output data line adjacent to the first output data line to the dummy data line, and do not drive the pixel unit, thereby ensuring that the horizontal polarity corresponding to the second output data line driving the pixel unit is The horizontal polarity of the first output data line driven by the pixel unit remains the same, avoids the generation of stripes during display, and has a good display effect.
  • Two virtual data lines are inserted between the first in-plane data line and the second in-plane data line, namely a virtual data line and a virtual data line.
  • the second output data line of the second type driver chip is in turn connected with the virtual data line and the virtual
  • the data line is connected to the second in-plane data line, so that the output signals of the two second output data at the junction are connected to the virtual data line, and the pixel unit is not driven, thereby ensuring that the pixel unit driving part of the second data line corresponds
  • the horizontal polarity of is consistent with the horizontal polarity of the first output data line, which avoids the occurrence of stripes at the boundary during display and has a good display effect.

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Abstract

La présente invention concerne une architecture de pilotage de pixels, un panneau d'affichage et un dispositif d'affichage, l'architecture de pilotage de pixels comprenant : des premières lignes de données dans le plan et des secondes lignes de données dans le plan, des lignes de données virtuelles étant disposées entre les premières lignes de données dans le plan et les secondes lignes de données dans le plan, et les premières lignes de données dans le plan et les secondes lignes de données dans le plan étant connectées respectivement à des unités de pixels correspondantes ; des puces de commande de premier type, qui sont connectées de manière correspondante aux premières lignes de données dans le plan au moyen de premières lignes de données de sortie respectivement ; et des puces de commande de second type, qui sont connectées de manière correspondante aux lignes de données virtuelles et aux secondes lignes de données dans le plan en séquence au moyen de secondes lignes de données de sortie.
PCT/CN2018/118571 2018-11-14 2018-11-30 Architecture de pilotage de pixel, panneau d'affichage et dispositif d'affichage WO2020098003A1 (fr)

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