WO2015096439A1 - 像素单元、显示装置及其驱动方法 - Google Patents

像素单元、显示装置及其驱动方法 Download PDF

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Publication number
WO2015096439A1
WO2015096439A1 PCT/CN2014/081137 CN2014081137W WO2015096439A1 WO 2015096439 A1 WO2015096439 A1 WO 2015096439A1 CN 2014081137 W CN2014081137 W CN 2014081137W WO 2015096439 A1 WO2015096439 A1 WO 2015096439A1
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Prior art keywords
sub
pixel
pixels
polygonal
display device
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PCT/CN2014/081137
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English (en)
French (fr)
Inventor
尹小斌
朴求铉
孙东领
Original Assignee
京东方科技集团股份有限公司
合肥京东方光电科技有限公司
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Priority to US14/429,991 priority Critical patent/US10140934B2/en
Publication of WO2015096439A1 publication Critical patent/WO2015096439A1/zh

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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
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1343—Electrodes
    • G02F1/134309—Electrodes characterised by their geometrical arrangement
    • 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
    • G09G3/3607—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 for displaying colours or for displaying grey scales with a specific pixel layout, e.g. using sub-pixels
    • G—PHYSICS
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    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T5/00—Image enhancement or restoration
    • G06T5/20—Image enhancement or restoration using local operators
    • G—PHYSICS
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    • 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
    • G09G3/3406—Control of illumination source
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    • 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
    • G09G3/3696—Generation of voltages supplied to electrode drivers
    • 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
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133509—Filters, e.g. light shielding masks
    • G02F1/133512—Light shielding layers, e.g. black matrix
    • 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
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133509—Filters, e.g. light shielding masks
    • G02F1/133514—Colour filters
    • 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
    • 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
    • G02F2201/00—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00
    • G02F2201/12—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00 electrode
    • G02F2201/122—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00 electrode having a particular pattern
    • 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
    • G02F2201/00—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00
    • G02F2201/12—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00 electrode
    • G02F2201/123—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00 electrode pixel
    • 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
    • G02F2201/00—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00
    • G02F2201/40—Arrangements for improving the aperture ratio
    • 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
    • G02F2201/00—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00
    • G02F2201/52—RGB geometrical arrangements
    • 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
    • G09G2300/04—Structural and physical details of display devices
    • G09G2300/0421—Structural details of the set of electrodes
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    • G—PHYSICS
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    • G09G2300/04—Structural and physical details of display devices
    • G09G2300/0439—Pixel structures
    • G09G2300/0452—Details of colour pixel setup, e.g. pixel composed of a red, a blue and two green components
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/06—Adjustment of display parameters
    • G09G2320/0626—Adjustment of display parameters for control of overall brightness

Definitions

  • Pixel unit display device and driving method thereof
  • Embodiments of the present invention relate to a pixel unit, a display device, and a method of driving the same. Background technique
  • TFT-LCD Thin Film Transistor-Liquid Crystal Display
  • the basic structure of the TFT-LCD includes an array substrate and a color filter substrate facing each other with a liquid crystal interposed therebetween, an external circuit and a backlight, and a liquid crystal between the array substrate and the color filter substrate to adjust whether the liquid crystal is deflected and deflected. The degree thus achieves a color display.
  • the color film substrate includes a square and closely arranged red color filter, a green color filter, and a blue color filter, since the color filters of the three colors are all coated with a color resist material. Formed in the corresponding area, the utilization of light emitted by the TFT-LCD to the backlight is low.
  • Embodiments of the present invention provide a pixel unit, a display device, and a driving method thereof, which can improve utilization of light.
  • an embodiment of the present invention provides a pixel unit including at least four sub-pixels, wherein three sub-pixels are polygons, and at least one sub-pixel is disposed in a space formed by three polygonal sub-pixels.
  • an embodiment of the present invention further provides a display device including a plurality of closely arranged pixel units as described above; and dividing the plurality of pixel units and a plurality of sub-pixels of each of the pixel units a black matrix, wherein the black matrix is disposed around each of the sub-pixels.
  • an embodiment of the present invention further provides a driving method of a display device, where the display device includes a plurality of closely arranged pixel units, each of the pixel units including at least four sub-pixels, wherein three sub-pixels a polygon, another at least one sub-pixel is disposed in a space formed by three polygonal sub-pixels, and the driving method includes: a pixel electrode of the three polygonal sub-pixels The sub-pixels located in the gap are driven together.
  • FIG. 1 is a schematic structural view 1 of a pixel unit according to an embodiment of the present invention.
  • FIG. 2 is a schematic structural diagram of a pixel electrode of a pixel unit according to an embodiment of the present invention
  • FIG. 3 is a schematic structural diagram 2 of a pixel unit according to an embodiment of the present invention.
  • FIG. 4 is a schematic structural diagram 3 of a pixel unit according to an embodiment of the present invention. detailed description
  • Embodiment 1 of the present invention provides a pixel unit, wherein the pixel unit includes at least four sub-pixels, wherein three sub-pixels are polygons, and at least one of the sub-pixels is disposed in a space formed by three polygonal sub-pixels.
  • the pixel unit since the pixel unit includes at least four sub-pixels, the pixel unit may include more colors with respect to the pixel unit known to the inventor, thereby reducing backlight filtering. Light, improving the utilization of light emitted by the backlight; and wherein three sub-pixels are polygonal, and at least one sub-pixel is disposed in a gap formed by three polygonal sub-pixels, so that the structure of the pixel unit is relatively compact, Conducive to the realization of high-resolution display devices.
  • the polygon sub-pixel refers to a sub-pixel enclosing a gap in the embodiment of the present invention, and defining it as a polygon sub-pixel does not mean that the sub-pixel located in the gap cannot have a polygon, just for convenience of description.
  • the pixel unit includes four sub-pixels as an example, wherein
  • the shape of the polygonal sub-pixels forming the gap is a heptagon.
  • the first sub-pixel 1 is a red sub-pixel
  • the second sub-pixel 2 is a blue sub-pixel
  • the third sub-pixel 3 is a green sub-pixel, wherein the first sub-pixel 1 and the second sub-pixel
  • the pixel 2 and the third sub-pixel 3 together define a triangular gap, which can be defined as one sub-pixel, that is, the fourth sub-pixel 4.
  • the fourth sub-pixel 4 may be a yellow sub-pixel or a white sub-pixel. If the fourth sub-pixel 4 is a yellow sub-pixel, when the light emitted by the backlight passes through the fourth sub-pixel, the yellow light is transmitted through the fourth sub-pixel 4 and utilized during display; if the fourth sub-pixel 4 is a white sub-pixel The light of any wavelength of any color emitted by the backlight can pass through the fourth sub-pixel 4, thereby improving the brightness of the display device.
  • the first sub-pixel 1, the second sub-pixel 2, and the third sub-pixel 3 each have one pixel electrode 5, and the first sub-pixel 1, the second sub-pixel 2, and
  • the pixel electrodes 5 of the third sub-pixel 3 are closely arranged, that is, the pixel electrodes 5 of the three polygonal sub-pixels are closely arranged, and the sub-pixels located in the gap are not provided with the pixel electrodes.
  • the fourth sub-pixel 4 corresponds to the pixel electrode 5 of the three polygonal sub-pixels, that is, the fourth sub-pixel 4 is driven by the pixel electrodes 5 of the three polygonal sub-pixels.
  • the pixel electrodes 5 of the three polygonal sub-pixels collectively drive the sub-pixels located in the gap.
  • a thin film transistor in which the sub-pixel is driven is disposed correspondingly to the sub-pixel provided with the pixel electrode, and a thin film transistor is not required to be provided in the sub-pixel in which the pixel electrode is not provided.
  • a thin film transistor is not required to be provided in the sub-pixel in which the pixel electrode is not provided.
  • only three of the four sub-pixel units surrounding the gap-forming sub-pixel are provided with the thin film transistor 6.
  • the voltage value of the corresponding pixel electrode is changed, and the corresponding pixel is changed.
  • the voltage difference between the electrode 5 and the common electrode changes the degree of deflection of the liquid crystal molecules in the corresponding region of the pixel electrode 5, and further corresponds to the brightness value of the polygonal sub-pixel of the pixel electrode. Therefore, when any one of the fourth sub-pixels 4 is provided When the pixel electrode voltage of the thin film transistor 6 of the sub-pixel is changed, the luminance value of the fourth sub-pixel 4 also changes.
  • the electrodes collectively drive the sub-pixels located in the gap. Therefore, if the voltage of the pixel electrode of a certain polygon sub-pixel is changed, the degree of deflection of the liquid crystal molecules in the corresponding region of the pixel electrode of the polygon sub-pixel is changed, thereby changing the polygon.
  • the luminance value of the sub-pixel meanwhile, also changes the luminance value of the pixel located in the gap.
  • the brightness value of the sub-pixel located in the gap can be changed along with the brightness value of the surrounding polygon sub-pixel without setting a thin film transistor and a chip capable of sensing and analyzing the brightness, thereby reducing the complexity of the structure of the TFT-LCD and
  • the driving difficulty can also ensure the color saturation and contrast of the TFT-LCD display, and improve the utilization of the light emitted by the TFT-LCD to the backlight.
  • the size of the fourth sub-pixel 4 may be set according to actual conditions so that the brightness and color saturation of the TFT-LCD are both optimal.
  • each of the polygonal sub-pixels forming the void is the same, and the shape of the polygonal sub-pixel may be other than the heptagon shown in FIG. 1 .
  • the present invention does not specifically define the shape of the polygonal sub-pixel.
  • the gap formed by the plurality of polygonal sub-pixels is a regular polygon, in consideration of factors such as a processing technique, an aesthetic appearance, and a display effect.
  • the fourth sub-pixel 4 is a regular polygon.
  • the fourth sub-pixel 4 is an equilateral triangle, as shown in FIG. 3 , the fourth sub-pixel is a regular hexagon, and so on, the more the number of sides of the regular polygon, the more The larger the four sub-pixels 4 are, the more advantageous the TFT-LCD is to make full use of the light emitted by the backlight, but the structure of the fourth sub-pixel 4 is more complicated, and the pattern of the fourth sub-pixel 4 can be set according to actual conditions. The embodiment of the invention does not limit this.
  • two or more sub-pixels may be disposed at the gap formed by the enclosure, the two or more sub-pixels corresponding to the pixel electrode surrounding the polygonal sub-pixel forming the void, and may be yellow
  • the sub-pixel or the white sub-pixel, the embodiment of the present invention does not limit the number of sub-pixels disposed at the gap formed, and can be selected by those skilled in the art according to actual conditions.
  • an embodiment of the present invention further provides a display device including a plurality of closely arranged pixel units as described above, and further comprising a black matrix dividing the plurality of pixel units and the sub-pixels of each of the pixel units Wherein the black matrix is disposed around each sub-pixel.
  • FIG. 2 illustrates an example pixel unit in which a pixel unit includes four images
  • the first sub-pixel 1, the second sub-pixel 2, and the third sub-pixel 3 are surrounded by a gap
  • the fourth sub-pixel 4 is disposed in the gap
  • the black matrix 7 is disposed around each sub-pixel.
  • the black matrix 7 in the display device plays an important role in the TFT-LCD. It prevents each sub-pixel from blending with each other to maintain the necessary color saturation.
  • the black matrix 7 is also used to block and absorb external incident light, avoiding it indirectly or indirectly by reflection and scattering onto the active layer of the TFT channel region, causing degradation of the off-state characteristics of the TFT; secondly, the black matrix 7 also plays Blocking light leakage between the lead 8 on the array substrate and the pixel electrode 5 due to the presence of a gap, thereby avoiding a decrease in image contrast; again, since the liquid crystal panel is subjected to a lateral electric field, liquid crystal molecules at the edge of the pixel may be tilted upside down. The orientation defect, the black matrix 7 can avoid this situation from causing a decrease in image contrast.
  • the black matrix 7 also corresponds to the gap arrangement between the pixel electrodes 5.
  • each of the polygon sub-pixels has a fourth sub-pixel 4 between the pixel electrodes 5 of the three polygonal sub-pixels.
  • the lead is exposed.
  • the display effect of the TFT-LCD is lowered, and it is necessary to provide the black matrix 7 for the lead.
  • the black matrix 7 is disposed corresponding to a gap between the pixel electrodes 5 of the respective polygon sub-pixels, such as Figure 4 shows.
  • the black matrix 7 and the color filter are disposed on the array substrate, and the color filter is disposed corresponding to each sub-pixel. Since the black matrix 7 is located on the array substrate at this time, when the width of the black matrix 7 is appropriately reduced, the black matrix 7 can ensure sufficient structure such as leads on the substrate to be shielded from light, and at the same time, the possibility of light leakage is reduced. It improves the resolution and transmittance while ensuring the display effect of the TFT-LCD. This technology is also called COA (Color Filter on Array) technology.
  • the array substrate is further provided with each other. a plurality of data lines and a plurality of gate lines that are forked and insulated, the plurality of data lines and the plurality of gate lines corresponding to a gap arrangement between pixel electrodes of the polygonal sub-pixels.
  • the plurality of data lines and the plurality of gate lines are broken lines and are disposed along boundaries of the polygonal sub-pixels.
  • the lead 8 in Figure 2 can be a data line or a gate line.
  • the COA technology may be used, that is, the liquid crystal panel includes an array substrate and a counter substrate thereof, wherein the black matrix 7 and the color filter corresponding to each sub-pixel are located at the On the array substrate or the pair of cassette substrates.
  • the pair of cassette substrates are the color film substrates of the prior art.
  • the color filters corresponding to the three polygonal sub-pixels are red, blue, and green color filters, respectively.
  • the display device may be: a product or a component having any display function such as a liquid crystal panel, a liquid crystal television, a liquid crystal display, a digital photo frame, a mobile phone, a tablet computer, or the like.
  • an embodiment of the present invention further provides a driving method of the above display device.
  • the display device includes a plurality of closely arranged pixel units, and the pixel unit includes at least four sub-pixels, wherein The three sub-pixels are polygon sub-pixels, and at least one of the sub-pixels is disposed in a space formed by three polygonal sub-pixels.
  • the driving method includes:
  • the pixel electrodes of the three polygonal sub-pixels collectively drive sub-pixels located in the gap.
  • the pixel electrodes of the three polygonal sub-pixels collectively drive the sub-pixels located in the gap, if the voltage of the pixel electrode of a certain polygon sub-pixel is changed, the corresponding region of the pixel electrode of the polygon sub-pixel is caused.
  • the degree of deflection of the liquid crystal molecules changes, thereby changing the luminance value of the polygon sub-pixel, and also changing the luminance value of the pixel located in the gap.
  • the thin film transistor and the chip capable of sensing and analyzing the brightness can be used to change the brightness value of the sub-pixel located in the gap together with the brightness value of the surrounding polygon sub-pixel, thereby reducing the complexity of the structure of the TFT-LCD and the driving difficulty.
  • the color saturation and contrast of the TFT-LCD display can be ensured, and the utilization of the light emitted by the TFT-LCD to the backlight can be improved.
  • the pixel unit and the display device of the embodiment of the present invention since the pixel unit includes at least four sub-pixels, the pixel unit includes more colors than the existing pixel unit, thereby reducing backlight filtering. Light, improving the utilization of light emitted by the backlight; and wherein three sub-pixels are polygonal, and at least one sub-pixel is disposed at a gap position formed by three polygonal sub-pixels, so that the structure of the pixel unit is relatively compact. Conducive to the realization of high-resolution display devices Now.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Nonlinear Science (AREA)
  • Computer Hardware Design (AREA)
  • Mathematical Physics (AREA)
  • Geometry (AREA)
  • Optics & Photonics (AREA)
  • Liquid Crystal (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

　一种像素单元、显示装置及其驱动方法被提供。该显示单元包括至少四个子像素（1，2，3，4），其中三个子像素（1，2，3）为多边形，另外至少一个子像素（4）设置在三个多边形子像素围设形成的空隙。这样，根据本发明实施例的显示装置能够在降低结构的复杂程度和驱动难度的同时，提高其对光的利用率。

Description

像素单元、 显示装置及其驱动方法 技术领域
本发明的实施例涉及一种像素单元、 显示装置及其驱动方法。 背景技术
近年来， 随着科技的发展， 液晶显示器技术也随之不断完善。 薄膜晶体 管液晶显示装置（ Thin Film Transistor-Liquid Crystal Display,简称 TFT-LCD ) 以其图像显示品质好、 能耗低、 环保等优势占据着显示器领域的重要位置。
TFT-LCD的基本结构包括彼此对盒的阵列基板和彩膜基板，其间插设液 晶， 配合外部电路和背光源， 通过调整阵列基板和彩膜基板之间的电压差来 调控液晶是否偏转以及偏转程度从而实现彩色显示。
据发明人已知， 彩膜基板中包括方形且紧密排布的红色滤色器、 绿色滤 色器和蓝色滤色器， 由于三种颜色的滤色器均是釆用色阻材料涂布在相应区 域形成的， 使得 TFT-LCD对背光源发出的光的利用率较低。 发明内容
本发明的实施例提供一种像素单元、 显示装置及其驱动方法， 能够提高 对光的利用率。
一方面， 本发明的实施例提供了一种像素单元， 所述像素单元包括至少 四个子像素， 其中三个子像素为多边形， 另外至少一个子像素设置在三个多 边形子像素围设形成的空隙。
另一方面， 本发明的实施例还提供了一种显示装置， 包括多个排布紧密 的如上所述的像素单元； 以及划分所述多个像素单元以及每个所述像素单元 的多个子像素的黑矩阵， 其中， 所述黑矩阵围绕每个所述子像素设置。
再一方面， 本发明的实施例还提供了一种显示装置的驱动方法， 所述显 示装置包括多个排布紧密的像素单元， 每个所述像素单元包括至少四个子像 素， 其中三个子像素为多边形， 另外至少一个子像素设置在三个多边形子像 素围设形成的空隙， 所述驱动方法包括： 所述三个多边形子像素的像素电极 共同驱动位于空隙的子像素。 附图说明
为了更清楚地说明本发明实施例的技术方案， 下面将对实施例的附图作 简单地介绍，显而易见地，下面描述中的附图仅仅涉及本发明的一些实施例， 而非对本发明的限制。
图 1为本发明实施例中的像素单元的结构示意图一；
图 2为本发明实施例中的像素单元的像素电极的结构示意图；
图 3为本发明实施例中的像素单元的结构示意图二； 以及
图 4为本发明实施例中的像素单元的结构示意图三。 具体实施方式
为使本发明实施例的目的、 技术方案和优点更加清楚， 下面将结合本发 明实施例的附图， 对本发明实施例的技术方案进行清楚、 完整地描述。显然， 所描述的实施例是本发明的一部分实施例， 而不是全部的实施例。 基于所描 述的本发明的实施例， 本领域普通技术人员在无需创造性劳动的前提下所获 得的所有其他实施例， 都属于本发明保护的范围。
实施例一
本发明的实施例一提供一种像素单元， 所述像素单元包括至少四个子像 素， 其中三个子像素为多边形， 另外至少一个子像素设置在三个多边形子像 素围设形成的空隙。
在根据本发明实施例的技术方案中， 由于该像素单元包括至少四个子像 素， 使得该像素单元相对于发明人已知的像素单元， 可以包括较多的颜色， 从而可减少背光源被滤除的光， 提高对背光源发出的光的利用率； 并且其中 三个子像素为多边形， 另外至少一个子像素设置在三个多边形子像素围设形 成的空隙， 使得该像素单元的结构较为紧凑， 有利于高分辨率显示装置的实 现。
这里， 应该注意的是， 多边形子像素在本发明的实施例中是指围设空隙 的子像素， 将其定义成多边形子像素并非意味着位于空隙中的子像素不能具 有多边形， 只是为了便于描述。 示例性地， 这里以像素单元包括四个子像素为例进行说明， 其中， 如图
1 所示， 围设形成空隙的多边形子像素的形状为七边形， 为方便描述， 分别 命名为第一子像素 1、第二子像素 2和第三子像素 3，这三个多边形子像素的 颜色各不相同， 例如， 第一子像素 1为红色子像素， 第二子像素 2为蓝色子 像素， 第三子像素 3为绿色子像素， 其中， 第一子像素 1、 第二子像素 2和 第三子像素 3共同围出了一块三角形的空隙，可将该空隙限定为一个子像素， 即第四子像素 4。
为了提高对背光源发出的光的利用率， 该第四子像素 4可为黄色子像素 或白色子像素。 若第四子像素 4为黄色子像素， 背光源发出的光经过第四子 像素时， 黄光得以透过第四子像素 4并在显示时加以利用； 若第四子像素 4 为白色子像素， 背光源发出的任意颜色的任意波长的光均可透过第四子像素 4， 从而提高了显示装置的亮度。
备选地， 结合图 1和图 2可知， 第一子像素 1、 第二子像素 2和第三子 像素 3均对应有一个像素电极 5，并且第一子像素 1、第二子像素 2和第三子 像素 3的像素电极 5紧密排列， 即所述三个多边形子像素的像素电极 5紧密 排列， 而位于空隙的子像素并未被提供像素电极。 同时， 结合图 1和图 2可 知， 第四子像素 4对应于三个多边形子像素的像素电极 5， 也就是， 该第四 子像素 4由三个多边形子像素的像素电极 5共同驱动， 所述三个多边形子像 素的像素电极 5共同驱动位于空隙的子像素。
示例性地， 设置有像素电极的子像素中对应设置有驱动该子像素的薄膜 晶体管， 而未设置像素电极的子像素中并不需要设置薄膜晶体管。 例如， 如 图 2所示， 四个子像素单元中仅三个围设形成空隙的子像素被设置有薄膜晶 体管 6。
示例性地， 结合图 1和图 2可知， 若是任一个多边形子像素的薄膜晶体 管 6的源极 /漏极输出的电流改变， 都将改变对应的像素电极的电压值， 进而 改变所对应的像素电极 5和公共电极之间的电压差， 改变该像素电极 5对应 区域的液晶分子的偏转程度，进而对应于像素电极的多边形子像素的亮度值， 因此， 当任一个围设第四子像素 4的子像素的薄膜晶体管 6的像素电极电压 改变时， 第四子像素 4的亮度值也会随之改变。
在根据本发明实施例的技术方案中， 由于所述三个多边形子像素的像素 电极共同驱动位于空隙的子像素， 因此， 若某一多边形子像素的像素电极的 电压发生改变， 将导致该多边形子像素的像素电极的对应区域的液晶分子的 偏转程度发生改变， 进而改变该多边形子像素的亮度值， 同时， 还改变了位 于空隙的像素的亮度值。 则无需设置另设薄膜晶体管和可感应并分析亮度的 芯片等即可使得位于空隙的子像素的亮度值与其周围的多边形子像素的亮度 值一同改变， 降低了 TFT-LCD的结构的复杂程度和驱动难度， 同时可以保 证 TFT-LCD的显示画面的色彩饱和度和对比度，提高 TFT-LCD对背光源发 出的光的利用率。
备选地， 第四子像素 4 的大小可根据实际情况设置， 以使得 TFT-LCD 的亮度和色彩饱和度都为最佳。
需要说明的是， 为了方便制作， 在本发明实施例中， 围绕形成空隙的各 个所述多边形子像素的形状相同， 除了图 1所示的七边形之外， 多边形子像 素的形状还可为图 3所示的八边形， 本发明不对多边形子像素的形状做具体 限定。
出于加工工艺、 美观程度、显示效果等因素的考虑， 在本发明实施例中， 多个多边形子像素围设形成的空隙为正多边形。 例如， 所述第四子像素 4为 正多边形。
示例性地， 如图 1所示， 该第四子像素 4为正三角形， 如图 3所示， 该 第四子像素为正六边形， 以此类推， 正多边形的边数越多， 使得第四子像素 4越大， 更有利于 TFT-LCD对背光源发出的光的充分利用，但是会使得第四 子像素 4的结构更复杂， 可根据实际情况设置第四子像素 4的图形， 本发明 实施例对此不进行限制。
备选地， 在围设所形成的空隙处可以设置两个或更多子像素， 所述两个 或更多子像素都对应于围设形成空隙的多边形子像素的像素电极， 且可以是 黄色子像素或白色子像素， 本发明的实施例对围设所形成的空隙处设置的子 像素的数量不做限定， 本领域的技术人员可根据实际情况进行选择。
进一步地， 本发明的实施例还提供了一种显示装置， 包括多个排布紧密 的如上所述的像素单元， 还包括划分多个像素单元以及每个所述像素单元的 子像素的黑矩阵， 其中， 所述黑矩阵围绕每个子像素设置。
示例性地， 图 2示出了一种示例的像素单元， 其中像素单元包括四个像 素， 其中第一子像素 1、 第二子像素 2和第三子像素 3围设形成空隙， 第四 子像素 4设置在该空隙中， 黑矩阵 7围绕每个子像素设置。
显示装置中的黑矩阵 7在 TFT-LCD中起着重要的作用。 它能阻止各子 像素彼此混和， 以保持必要的色饱和度。 黑矩阵 7还被用来阻挡和吸收外界 入射光线， 避免其直接或通过反射与散射间接照射到 TFT 沟道区的有源层 上， 引起 TFT关态特性的劣化； 其次黑矩阵 7还起到遮挡阵列基板上的引线 8与像素电极 5之间由于存在间隙而产生的漏光， 避免图像对比度的降低； 再次则是由于液晶面板在受横向电场作用时， 在像素边缘的液晶分子会发生 颠倒倾斜取向缺陷， 黑矩阵 7可以避免这种情况造成图像对比度的降低。
这样， 在本发明实施例中， 为了进一步遮挡漏光， 黑矩阵 7还对应于像 素电极 5之间的间隙设置。
示例性地， 下面结合图 1、 图 2和图 3进行说明， 由于各多边形子像素 之间具有第四子像素 4，该第四子像素 4使得三个多边形子像素的像素电极 5 之间的引线暴露， 为了防止因第四子像素 4暴露出的引线 8和周围的像素电 极 5之间存在漏光降低 TFT-LCD的显示效果， 需要针对这部分引线设置黑 矩阵 7。 示例性地， 如图 2所示， 由于该引线 8设置在各像素电极 5之间， 因此， 进一步地， 将所述黑矩阵 7对应各多边形子像素的像素电极 5之间的 间隙设置， 如图 4所示。
由于近年来人们对于显示装置的透光率、 分辨率、 功耗等的要求越来越 高， 显示装置都在向着高透过率、 高分辨率、 低功耗等方向发展。 分辨率的 增加， 使得子像素的边长、 尺寸变小， 因此， 黑矩阵 7的边宽也需要减小， 但是黑矩阵 5的宽度减小有可能导致阵列基板和彩膜基板之间的对盒出现偏 差， 导致漏光等不良现象的产生， 因此位于彩膜基板上的黑矩阵 7的宽度不 能任意减小。 人们为了克服黑矩阵 7减小带来的漏光等不良现象， 将黑矩阵 7 和滤色器设置到阵列基板上， 该滤色器对应于每个子像素设置。 由于此时 黑矩阵 7位于阵列基板上， 在适当减小黑矩阵 7的宽度时， 也能保证黑矩阵 7 能够充分阵列基板上的引线等需遮光的结构， 同时， 减少漏光现象发生的 可能性， 在提高分辨率、 透过率的同时又保证了 TFT-LCD的显示效果。 这 种技术又叫做 COA ( Color Filter on Array )技术。
示例性地， 在本发明实施例的显示装置中， 阵列基板上还设置有彼此交 叉且绝缘的多条数据线和多条栅线， 所述多条数据线和所述多条栅线对应于 所述多边形子像素的像素电极之间的间隙设置。 例如， 所述多条数据线和所 述多条栅线为折线， 沿着多边形子像素的边界设置。
示例性地， 图 2中的引线 8可以为数据线或栅线。
因此， 在本发明实施例中， 亦可釆用 COA技术， 即所述液晶面板包括 阵列基板及其对盒基板， 其中， 所述黑矩阵 7和对应于每个子像素设置的滤 色器位于所述阵列基板或所述对盒基板上。 显然， 滤色器和黑矩阵 7都位于 对盒基板上时， 该对盒基板即为现有技术中的彩膜基板。
例如， 对于附图示出的示例而言， 三个多边形子像素对应的滤色器分别 为红色、 蓝色和绿色滤色器。
进一步的， 该显示装置可以为： 液晶面板、 液晶电视、 液晶显示器、 数 码相框、 手机、 平板电脑等具有任何显示功能的产品或部件。
更进一步的， 本发明实施例还提供了一种上述显示装置的驱动方法， 如 前文所述， 所述显示装置包括多个排布紧密的像素单元， 所述像素单元包括 至少四个子像素， 其中三个子像素为多边形子像素， 另外至少一个子像素设 置在三个多边形子像素围设形成的空隙， 所述驱动方法包括：
所述三个多边形子像素的像素电极共同驱动位于空隙的子像素。
由此， 由于所述三个多边形子像素的像素电极共同驱动位于空隙的子像 素， 因此， 若某一多边形子像素的像素电极的电压发生改变， 将导致该多边 形子像素的像素电极的对应区域的液晶分子的偏转程度发生改变， 进而改变 该多边形子像素的亮度值， 同时， 还改变了位于空隙的像素的亮度值。 则无 需设置薄膜晶体管和可感应并分析亮度的芯片等即可使得位于空隙的子像素 的亮度值与其周围的多边形子像素的亮度值一同改变， 降低了 TFT-LCD的 结构的复杂程度和驱动难度， 同时可以保证 TFT-LCD的显示画面的色彩饱 和度和对比度， 提高 TFT-LCD对背光源发出的光的利用率。
根据本发明实施例的像素单元和显示装置， 由于该像素单元包括至少四 个子像素，使得该像素单元相对于现有的像素单元而言，所包括的颜色较多， 可减少背光源被滤除的光， 提高对背光源发出的光的利用率； 并且其中三个 子像素为多边形， 另外至少一个子像素设置在三个多边形子像素围设形成的 空隙位置， 使得该像素单元的结构较为紧凑， 有利于高分辨率显示装置的实 现。
以上所述， 仅为本发明的实施例， 但本发明实施例的保护范围并不局限 于此， 任何熟悉本技术领域的技术人员在本发明揭露的技术范围内， 可轻易 想到变化或替换， 都应涵盖在本发明的保护范围之内。 因此， 本发明的保护 范围应以所述权利要求的保护范围为准。
本申请要求于 2013年 12月 27日递交的中国专利申请第 201310737825.7 号的优先权， 在此全文引用上述中国专利申请公开的内容以作为本申请的一 部分。

Claims

权利要求书
1、 一种像素单元， 所述像素单元包括至少四个子像素，
其中三个子像素为多边形， 另外至少一个子像素设置在三个多边形子像 素围设形成的空隙。
2、根据权利要求 1所述的像素单元，其中所述像素单元包括四个子像素， 其中位于三个多边形子像素围设形成的空隙的子像素为黄色子像素或白色子 像素， 所述三个多边形子像素的像素电极共同驱动所述位于空隙的子像素。
3、根据权利要求 2所述的像素单元，其中所述三个多边形子像素的像素 电极紧密排列。
4、根据权利要求 3所述的像素单元，其中所述三个多边形子像素的形状 相同。
5、根据权利要求 4所述的像素单元，其中所述多边形子像素的形状为八 边形或七边形。
6、根据权利要求 2-5中任一项所述的像素单元， 其中每个所述三个多边 形子像素中设有一个薄膜晶体管， 所述位于空隙的子像素中未设置有薄膜晶 体管。
7、根据权利要求 2-5中任一项所述的像素单元， 其中所述位于空隙的子 像素对应的滤色器为白色滤色器或黄色滤色器。
8、根据权利要求 2-7中任一项所述的像素单元， 其中所述位于空隙的子 像素中未设置有像素电极。
9、 一种显示装置， 包括：
多个排布紧密的如权利要求 1-8任一项所述的像素单元； 以及
划分所述多个像素单元以及每个所述像素单元的多个子像素的黑矩阵， 其中， 所述黑矩阵围绕每个所述子像素设置。
10、 根据权利要求 9所述的显示装置， 其中所述黑矩阵对应多边形子像 素的像素电极之间的间隙设置。
11、根据权利要求 9或 10所述的显示装置，其中所述显示装置包括彼此 对盒的阵列基板及对置基板， 所述黑矩阵位于所述阵列基板或所述对置基板 上。
12、根据权利要求 11所述的显示装置，其中所述阵列基板上设置有彼此 交叉且绝缘的多条数据线和多条栅线， 所述多条数据线和所述多条栅线对应 于所述多边形子像素的像素电极之间的间隙设置。
13、根据权利要求 12所述的显示装置，其中所述多条数据线和所述多条 栅线为折线。
14、根据权利要求 9-13中任一项所述的显示装置， 其中所述对盒基板或 所述阵列基板上还设置有与每个所述像素单元的每个子像素对应设置的滤色 器。
15、根据权利要求 14所述的显示装置，其中对应于围设形成空隙的所述 三个多边形子像素的滤色器分别为红色、 蓝色和绿色滤色器。
16、根据权利要求 14所述的显示装置，其中对应于所述位于空隙的子像 素的至少一个所述滤色器为白色滤色器或黄色滤色器。
17、 一种如权利要求 9-16中任一项所述的显示装置的驱动方法， 所述显 示装置包括多个排布紧密的像素单元， 每个所述像素单元包括至少四个子像 素， 其中三个子像素为多边形， 另外至少一个子像素设置在三个多边形子像 素围设形成的空隙， 所述驱动方法包括：
所述三个多边形子像素的像素电极共同驱动所述位于空隙的子像素。
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