WO2017004950A1 - 一种显示装置及其驱动方法 - Google Patents

一种显示装置及其驱动方法 Download PDF

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Publication number
WO2017004950A1
WO2017004950A1 PCT/CN2015/098481 CN2015098481W WO2017004950A1 WO 2017004950 A1 WO2017004950 A1 WO 2017004950A1 CN 2015098481 W CN2015098481 W CN 2015098481W WO 2017004950 A1 WO2017004950 A1 WO 2017004950A1
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WIPO (PCT)
Prior art keywords
pixel
sub
display panel
unit
light
Prior art date
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PCT/CN2015/098481
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English (en)
French (fr)
Inventor
刘英明
董学
王海生
陈小川
赵卫杰
李昌峰
丁小梁
刘红娟
杨盛际
刘伟
王磊
Original Assignee
京东方科技集团股份有限公司
北京京东方光电科技有限公司
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Application filed by 京东方科技集团股份有限公司, 北京京东方光电科技有限公司 filed Critical 京东方科技集团股份有限公司
Priority to US15/326,609 priority Critical patent/US20170206843A1/en
Publication of WO2017004950A1 publication Critical patent/WO2017004950A1/zh

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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
    • G09G3/34—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
    • G09G3/3413—Details of control of colour illumination sources
    • 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
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133603—Direct backlight with LEDs
    • 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
    • G02F1/1336—Illuminating devices
    • G02F1/133621—Illuminating devices providing coloured light
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
    • G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
    • G06V40/12—Fingerprints or palmprints
    • G06V40/13—Sensors therefor
    • G06V40/1318—Sensors therefor using electro-optical elements or layers, e.g. electroluminescent sensing
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
    • G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
    • G06V40/12—Fingerprints or palmprints
    • G06V40/1365—Matching; Classification
    • 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
    • G09G3/2003—Display of colours
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
    • G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
    • G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
    • G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
    • 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
    • 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
    • G02F2201/44—Arrangements combining different electro-active layers, e.g. electrochromic, liquid crystal or electroluminescent layers
    • 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
    • G02F2201/58—Arrangements comprising a monitoring photodetector
    • 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
    • G09G2300/02—Composition of display devices
    • G09G2300/023—Display panel composed of stacked panels
    • 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
    • G09G2300/0439—Pixel structures
    • G09G2300/0452—Details of colour pixel setup, e.g. pixel composed of a red, a blue and two green components

Definitions

  • the present invention relates to the field of display and palmprint recognition technologies, and in particular, to a display device and a driving method thereof.
  • Liquid crystal display has the advantages of low radiation, small size and low energy consumption, and is widely used in electronic products such as tablet computers, televisions or mobile phones.
  • the liquid crystal display is mainly composed of a backlight and a display panel.
  • the display principle is that after the light emitted by the backlight reaches the display panel, the pressure difference between the pixel electrode and the common electrode in each sub-pixel of the display panel controls the liquid crystal deflection angle, thereby The intensity of the light emitted from the sub-pixels is controlled; wherein the gray scale of the corresponding color light emitted from the sub-pixels can be determined according to the color of the color filter layer in each sub-pixel and the intensity of the light emitted from the sub-pixel.
  • the palmprint recognition technology is applied to a liquid crystal display, since the light emitted by the backlight of the liquid crystal display is natural light, although the palmprint recognition is the three primary color light sources in the liquid crystal display as the identification light source, due to the natural light emitted by the backlight, The inclusion of multiple wavelengths of light affects the accuracy of palmprint recognition, which makes palmprint recognition performance poor.
  • Embodiments of the present invention provide a display device and a driving method thereof, which can improve the problem of poor palmprint recognition performance due to the influence of natural light emitted from a backlight in the prior art.
  • a display device is provided.
  • the display device includes: a liquid crystal display panel, the liquid crystal display panel does not include a color filter layer, and the liquid crystal display panel includes a plurality of first pixel units arranged in an array, each of the The first pixel unit includes at least three sub-pixels, each of the sub-pixels includes a display unit, and at least one of the first pixel units is provided with a palmprint recognition unit for identifying a palm print; a light source on the light side, the light source for providing three primary color lights to three of the at least three sub-pixels, wherein the three sub-pixels comprise the at least one sub-pixel provided with a palm print recognition unit.
  • the OLED light source is an OLED display panel; the OLED display panel further includes a plurality of second pixel units arranged in an array, each of the second pixel units including a red sub-pixel, a green Subpixel and blue subpixel.
  • the first pixel unit is in one-to-one correspondence with the second pixel unit.
  • the sub-pixels of the first pixel unit having the palmprint recognition unit are in one-to-one correspondence with the blue sub-pixels of the second pixel unit.
  • each of the second sub-pixels in the OLED display panel includes an anode, a cathode, and a light-emitting layer disposed between the anode and the cathode; wherein the red sub-pixel includes a red light-emitting layer, The green sub-pixel includes a green light-emitting layer, and the blue sub-pixel includes a blue light-emitting layer.
  • liquid crystal display panel and the OLED display panel are connected by an optically transparent resin glue.
  • the liquid crystal display panel further includes an array substrate and a counter substrate; the display unit is located on the array substrate.
  • the palm print recognition unit is located on the array substrate; the palm print recognition unit includes at least a photo transistor.
  • a driving method for a display device according to any of the above embodiments is provided.
  • the driving method includes: controlling a second image in the OLED display panel
  • the element unit illuminates and charges the display unit in the first pixel unit of the liquid crystal display panel to control the light exit rate; and controls the palm print recognition unit to collect the palm print information.
  • the step of controlling the second pixel unit in the OLED display panel to emit light comprises controlling the second pixel unit in the OLED display panel to emit light row by row; and, the first to the liquid crystal display panel
  • the step of charging the display unit in the pixel unit includes charging the display unit in a row of the first pixel unit corresponding to a row of second pixel units that are currently emitting light.
  • the step of controlling the palmprint recognition unit to perform the acquisition of the palmprint information comprises: controlling the palmprint recognition unit in a row of the first pixel unit currently being illuminated to perform the acquisition of the palmprint information.
  • Embodiments of the present invention provide a display device and a driving method thereof, which provide three primary colors of light for a liquid crystal display panel by using an OLED light source, so that the liquid crystal display panel can also perform color display without a color filter layer; Since the palmprint recognition unit is integrated in the liquid crystal display panel, the display device has a palmprint recognition function; on the basis of the OLED light source itself, three primary colors such as red light, green light, and blue light are emitted. Compared with the natural light emitted by the backlight in the prior art, the present invention can improve the problem that the palmprint recognition performance is poor due to the influence of natural light emitted from the backlight.
  • FIG. 1 is a schematic structural diagram 1 of a display device according to an embodiment of the present invention.
  • FIG. 2 is a second schematic structural diagram of a display device according to an embodiment of the present invention.
  • FIG. 3 is a schematic structural diagram 3 of a display device according to an embodiment of the present disclosure.
  • FIG. 4 is a schematic structural diagram of a second pixel unit of an OLED display panel according to an embodiment of the present disclosure. intention;
  • FIG. 5 is a schematic structural diagram of a display unit according to an embodiment of the present disclosure.
  • FIG. 6 is a schematic structural diagram of a palmprint recognition unit according to an embodiment of the present invention.
  • FIG. 7 is a flowchart of a driving method of a display device according to an embodiment of the present invention.
  • the display device includes a liquid crystal display panel 01.
  • the liquid crystal display panel does not include a color filter layer, and the liquid crystal display panel 01 includes an array arrangement.
  • a plurality of first pixel units 10 each of the first pixel units including at least three sub-images
  • Each of the sub-pixels includes a display unit, and at least one of the first pixel units 10 is provided with a palm print recognition unit for recognizing the palm print;
  • the display device further includes a light-receiving side disposed on the liquid crystal display panel
  • the light source 02 is configured to respectively provide three primary colors of light to the at least three sub-pixels in the first pixel unit 10.
  • the photon 02 may be, for example, an OLED (Organic Light-Emitting Diode) light source.
  • OLED Organic Light-Emitting Diode
  • the first pixel unit 10 may include at least three sub-pixels.
  • the light source 02 provides three primary colors of light for each of the three sub-pixels of the first pixel unit 10; when the first pixel unit 10 includes When there are more than three sub-pixels, the light source 02 provides three primary colors of light for each of the three sub-pixels of the first pixel unit 10, and at least one of the three sub-pixels includes the palmprint recognition unit.
  • the light provided to the other sub-pixels in the first pixel unit 10 can be set according to actual needs, for example, it can be white light, which is not limited herein.
  • each first pixel unit 10 includes three sub-pixels and one of the sub-pixels includes a palm print recognition unit.
  • a sub-pixel including the display unit 101 and the palm print recognition unit 102 is referred to as a first sub-pixel 11, and the remaining sub-pixels (ie, including the display unit 101 but not including a palm print)
  • the sub-pixels of the recognition unit 102 are referred to as second sub-pixels 12.
  • the three primary colors of light may be, for example, red (R), green (G), and blue (B), and may of course be cyan (C), magenta (M), and yellow (Y).
  • the present invention is described by taking three primary colors of light as red light, green light, and blue light as an example.
  • the OLED light source 02 may include a plurality of three primary color light source groups, and each of the three primary color light source groups includes a red light sub-light source, a green-emitting sub-light source, and a blue-emitting sub-light source.
  • the liquid crystal display panel 01 does not include a color filter layer, the liquid crystal display panel 01 is to realize color display, and each of the first pixel units 10 needs to receive the OLED light source 02 in each frame. Red, green and blue light.
  • the specific structure of the display unit 101 in each sub-pixel of the first pixel unit 10 is not limited, so that the display can be implemented.
  • the specific structure of the palm print recognition unit 102 is not limited to achieve palm print recognition.
  • the embodiment of the present invention provides a display device, which uses the light source 02 to provide three primary colors of light to the liquid crystal display panel 01, so that the liquid crystal display panel 01 can also perform color display without a color filter layer;
  • the palmprint recognition unit 102 is integrated in the liquid crystal display panel 01, thereby making the display device have a palmprint recognition function; on the basis of this, since the OLED light source 02 itself emits three primary colors such as red light, green light, and blue light,
  • the present invention can improve the problem of poor palmprint recognition performance due to the influence of natural light emitted from the backlight, relative to the natural light emitted by the backlight in the prior art.
  • the light source 02 includes an OLED display panel 03; the OLED display panel 03 includes a plurality of second pixel units 30 arranged in an array, each of the second pixel units 30 including a red sub- The pixel 31, the green sub-pixel 32, and the blue sub-pixel 33.
  • the red sub-pixel 31, the green sub-pixel 32, and the blue sub-pixel 33 may include an anode 301, a cathode 302, and a light-emitting layer.
  • the light emitting layer in the red sub-pixel 31 is a red light emitting layer 303
  • the light emitting layer in the green sub-pixel 32 is a green light emitting layer 304
  • the light emitting layer in the blue sub-pixel is a blue light emitting layer 305.
  • the red sub-pixel 31, the green sub-pixel 32, and the blue sub-pixel 33 may include an electron transport layer and a hole transport layer in addition to the light-emitting layer for emitting the corresponding color light, and further, in order to improve the The efficiency of the electrons and the holes injected into the light-emitting layer may further include an electron injection layer disposed between the cathode and the electron transport layer, and an empty space between the anode and the hole transport layer Hole injection layer.
  • the anodes of all the sub-pixels in the OLED display panel 03 may be connected (ie, common anode), and of course, the cathodes of all sub-pixels may be connected (ie, common cathode), or The anodes of all the sub-pixels are connected, and the cathodes of all the sub-pixels are connected.
  • the anodes of each column of the same color sub-pixel for example, the red sub-pixel 31 or the green sub-pixel 32 or the blue sub-pixel 33
  • the cathodes of all sub-pixels can be connected.
  • the anodes of all the same color sub-pixels in the OLED display panel 03 may be connected, and on the basis of this, the cathodes of all the sub-pixels may be connected.
  • the display unit 101 can be provided with three primary color light sources for each sub-pixel of the liquid crystal display panel 01, so that the The liquid crystal display panel 01 has better display performance; on the other hand, since the OLED display panel 03 can also control the light-emitting area, in the palmprint recognition stage, only the palm print recognition unit 102 of the palm cover area can provide a light source, thereby Shorten the time of palmprint recognition and avoid unnecessary interference.
  • the first pixel unit 10 and the second pixel unit 30 are in one-to-one correspondence.
  • the three sub-pixels in the first pixel unit 10 respectively correspond to the red sub-pixel 31, the green sub-pixel 32, and the blue sub-pixel 33 in the second pixel unit 30.
  • the three sub-pixels in each of the first pixel units 10 can simultaneously receive the red, green, and blue light emitted by the three sub-pixels of the corresponding second pixel unit 30. And launch it to achieve color display.
  • the first sub-pixel 11 of the first pixel unit in the liquid crystal display panel 01 is preferred (including the palm print recognition unit).
  • the sub-pixels of 102 are in one-to-one correspondence with the blue sub-pixels 33 of the second pixel unit in the OLED display panel 30.
  • the liquid crystal display panel 01 and the OLED display panel 03 are connected by Optical Clear Resin (OCR).
  • OCR Optical Clear Resin
  • the liquid crystal display panel 01 and the OLED display panel 03 are fixed by OCR glue to form the display device.
  • OCR glue can avoid the impact on the light transmittance.
  • the liquid crystal display panel 01 further includes an array substrate and a counter substrate, and of course, a liquid crystal layer between the array substrate and the pair of cassette substrates; the display unit 102 is disposed in the On the array substrate.
  • the display unit 101 may include a switching transistor 1011, a pixel electrode 1012 electrically connected to a drain of the switching transistor, and a common electrode 1013.
  • the thin film transistor includes a gate electrode, a gate insulating layer, a semiconductor active layer, a source and a drain, and the drain is connected to the pixel electrode.
  • the array substrate further includes a gate line SL connected to the gate, and a data line DL connected to the source. The gate line is connected to the display unit 101 in one row of sub-pixels, and the data line is connected to the display unit in a column of sub-pixels.
  • the pixel electrode and the common electrode are spaced apart from each other, and are strip electrodes; for advanced super-dimensional field conversion type In the (Advanced-Super Dimensional Switching, ADS for short) array substrate, the pixel electrode and the common electrode are disposed in different layers, wherein the upper electrode is a strip electrode, and the lower electrode is a plate electrode. Based on this, for the counter substrate, it includes a black matrix.
  • IPS In-Plane Switch
  • ADS Advanced-Super Dimensional Switching
  • the palm print recognition unit 102 is also located on the array substrate, and the palm print recognition unit at least includes a photo transistor through which the valley line and the ridge line of the palm print can be identified.
  • the palm print recognition unit 102 can be prepared while preparing the display unit 101, which simplifies the preparation process.
  • the palm print recognition unit 102 may include: a first transistor T1 and a second transistor T2, the first transistor is a photo transistor; a gate of the first transistor T1 and a first The pole is connected to the control voltage terminal V1, the second pole is connected to the first pole of the second transistor T2, the gate of the second transistor T2 is connected to the scan line Scan, and the second pole is connected to the read signal line RL.
  • the read signal line RL is used to transmit the collected fingerprint information to a corresponding receiving device to process the fingerprint information.
  • the embodiment of the present invention further provides a driving method for the display device according to the previous embodiment.
  • the display device can be driven by a driving module in the display device, as shown in FIG.
  • the driving methods include:
  • the driving module controls the second pixel unit 30 in the OLED display panel 03 to emit light row by row, and charges the display unit 101 in the first pixel unit 10 of the liquid crystal display panel 01 corresponding to the current row of the second pixel unit 30. To control the light emission rate.
  • the deflection angle of the liquid crystal can be controlled to control the light intensity of the second pixel unit 30 after passing through the first pixel unit 10 of the liquid crystal display panel 01.
  • the driving manner of the OLED display panel may be, for example, progressive driving, column-by-column driving, or otherwise driving.
  • the driving mode of the OLED is driven by a progressive driving method, which can reduce the influence of the adjacent pixels on the light, thereby improving the accuracy of the recognition.
  • the driving module controls the palmprint recognition unit 102 in the first pixel unit 10 of the liquid crystal display panel 01 corresponding to the current row second pixel unit 30 to perform palmprint information collection.
  • the palm print recognition unit 102 when the photo-control transistor is included in the palm print recognition unit 102, since the photo-control transistor performs palmprint recognition based on the light incident on the palm and then reflected to the photo-transistor, the palm print recognition unit 102 performs palmprint information collection. In this case, it is necessary to ensure that the light emitted by the second pixel unit 30 in the OLED display panel 03 passes through the first pixel unit 10 of the liquid crystal display panel 01 to reach the palm. Based on this, the palmprint recognition unit 102 performs palmprint information acquisition in synchronization with the normal display of the liquid crystal display panel 01.
  • the OLED display panel and the liquid crystal display panel can be driven in two stages.
  • the second pixel unit 30 in the OLED display panel 03 is first controlled to emit light, and simultaneously with the liquid crystal display panel 01.
  • the display unit 101 in the first pixel unit 10 is charged to control the light emission rate, thereby causing the liquid crystal display panel 01 to perform one frame display.
  • the palm print recognition unit 102 is controlled to collect the palm print information while driving the OLED display panel and the liquid crystal display panel. Therefore, in the second stage, the liquid crystal display panel 01 can be normally displayed on the screen, and the liquid crystal display panel 01 can also display a white screen.
  • the corresponding line to which the reflected light is incident may be used, for example, the first line of the second line.
  • the palm print recognition unit 102 in the pixel unit 10 performs palm print recognition; likewise, the light emitted from the second row second pixel unit 30 passes through the first pixel of the liquid crystal display panel 01 corresponding to the current row second pixel unit 30.
  • the palm print recognition unit 102 in the first pixel unit 10 of the third row may be used to perform palmprint recognition by a corresponding line to which the reflected light is incident, and so on.
  • the first phase and the second phase may be different time segments, and the time lengths of the first phase and the second phase may not be equal.
  • first phase and the second phase described above may be located within one frame. That is, the first stage and the second stage described above are repeated every frame.
  • the palmprint recognition can be achieved while displaying.
  • the scanning frequency is 60 Hz, that is, the time of each frame is 16.67 ms.
  • One frame time is divided into two phases.
  • the driving module controls the second pixel unit 30 in the OLED display panel 03 to emit light row by row, and the display unit 101 in the first pixel unit 10 of the liquid crystal display panel 01 corresponding to the current row second pixel unit 30 Charging is performed to complete one frame of picture display;
  • the driving module controls the second pixel unit 30 in the OLED display panel 03 to emit light row by row, and the liquid crystal display panel 01 corresponding to the current row of the second pixel unit 30
  • the display unit 101 in the first pixel unit 10 performs charging to display a white screen while performing palm print information using the palm print recognition unit 102 in the first pixel unit 10 of the liquid crystal display panel 01 corresponding to the current row second pixel unit 30.
  • the acquisition is done to complete the palmprint recognition.
  • the time of the above two stages may be the same or different.
  • the embodiment of the present invention provides a driving method for a display device.
  • the OLED display panel 03 provides three primary colors of light by the liquid crystal display panel 01.
  • the liquid crystal display panel 01 can also be performed without a color filter layer. Color display and interference can be avoided; and, since the palm print recognition unit 102 is integrated in the liquid crystal display panel 01, the display device has a palm print recognition function; on the basis of this, since the OLED display panel 03 itself emits Three primary colors and progressive Illumination, and thus, relative to natural light emitted by a backlight in the prior art, the inventive example can improve the effect of natural light emitted by the backlight and can greatly improve the accuracy of recognition.

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Abstract

一种显示装置及其驱动方法。显示装置包括液晶显示面板（01），液晶显示面板（01）不包括彩色滤光层，且液晶显示面板（01）包括阵列排布的多个第一像素单元（10），每个第一像素单元（10）包括至少三个子像素，每个子像素均包括显示单元（101），每个第一像素单元（10）中的至少一个子像素设有用于识别掌纹的掌纹识别单元（102）；设置于液晶显示面板（01）入光侧的光源（02），光源（02）用于向至少三个子像素中的三个子像素分别提供三原色光，其中，三个子像素包括设有掌纹识别单元（102）的至少一个子像素。驱动方法用于具有掌纹识别功能的显示装置。

Description

一种显示装置及其驱动方法 技术领域
本发明涉及显示以及掌纹识别技术领域，尤其涉及一种显示装置及其驱动方法。
背景技术
液晶显示器(Liquid Crystal Display，简称LCD)具有低辐射、体积小及低耗能等优点，被广泛地应用在平板电脑、电视或手机等电子产品中。液晶显示器主要由背光源和显示面板构成，其显示原理为，背光源发出的光到达显示面板后，显示面板的每个子像素中的像素电极和公共电极之间的压差控制液晶偏转角度，从而控制从子像素发出光的强度；其中，根据每个子像素中的彩色滤光层的颜色和从该子像素发出光的强度便可确定从该子像素中发出的相应颜色光的灰阶。
此外，掌纹识别技术领域自20世纪90年代后期由香港理工大学与清华大学率先开创以来，得到了广泛的应用。
然而，当掌纹识别技术应用在液晶显示器中时，由于液晶显示器的背光源发出的光为自然光，虽然掌纹识别是以液晶显示器中的三原色光源为识别光源，但是由于背光源发出的自然光，其中包括了多种波长的光，会对掌纹识别的准确性造成影响，从而使得掌纹识别的性能不佳。
发明内容
本发明的实施例提供一种显示装置及其驱动方法，可改善由于现有技术中背光源发出的自然光的影响而导致掌纹识别性能不佳的问题。
为达到上述目的，本发明的实施例提出了如下技术方案。
根据本发明的一个方面，提供一种显示装置。
根据示例性的实施例，该显示装置包括：液晶显示面板，所述液晶显示面板不包括彩色滤光层，且所述液晶显示面板包括阵列排布的多个第一像素单元，每个所述第一像素单元包括至少三个子像素，每个子像素均包括显示单元，每个第一像素单元中的至少一个子像素设有用于识别掌纹的掌纹识别单元；设置于所述液晶显示面板入光侧的光源，所述光源用于向所述至少三个子像素中的三个子像素分别提供三原色光，其中，所述三个子像素包括设有掌纹识别单元的所述至少一个子像素。
在进一步的示例性实施例中，所述OLED光源为OLED显示面板；所述OLED显示面板还包括阵列排布的多个第二像素单元，每个所述第二像素单元包括红色子像素、绿色子像素和蓝色子像素。
在进一步的示例性实施例中，所述第一像素单元与所述第二像素单元一一对应。
在进一步的示例性实施例中，第一像素单元中设有掌纹识别单元的子像素与第二像素单元中的蓝色子像素一一对应。
在进一步的示例性实施例中，所述OLED显示面板中的每个第二子像素均包括阳极、阴极和设置在阳极和阴极之间的发光层；其中，红色子像素中包括红色发光层、绿色子像素中包括绿色发光层、蓝色子像素中包括蓝色发光层。
在进一步的示例性实施例中，所述液晶显示面板和所述OLED显示面板之间通过光学透明树脂胶连接。
在进一步的示例性实施例中，所述液晶显示面板还包括阵列基板和对盒基板；所述显示单元位于所述阵列基板上。
在进一步的示例性实施例中，所述掌纹识别单元位于阵列基板上；所述掌纹识别单元至少包括光敏晶体管。
根据本发明的另一方面，提供一种用于上述任一实施例所述的显示装置的驱动方法。
在示例性的实施例中，该驱动方法包括：控制OLED显示面板中的第二像 素单元使其发光，并对液晶显示面板的第一像素单元中的显示单元充电以控制光出射率；和控制掌纹识别单元进行掌纹信息的采集。
在进一步的示例性实施例中，控制OLED显示面板中的第二像素单元使其发光的步骤包括控制OLED显示面板中的第二像素单元使其逐行发光；并且，对液晶显示面板的第一像素单元中的显示单元充电的步骤包括对与当前正在发光的一行第二像素单元相对应的一行第一像素单元中的显示单元充电。
在进一步的示例性实施例中，控制掌纹识别单元进行掌纹信息的采集的步骤包括：控制当前正在发光的一行第一像素单元中的掌纹识别单元进行掌纹信息的采集。
本发明实施例提供了一种显示装置及其驱动方法，利用OLED光源为液晶显示面板提供三原色光，可使所述液晶显示面板在没有彩色滤光层的情况下，也可以进行彩色显示；并且，由于所述液晶显示面板中集成有掌纹识别单元，因而使得该显示装置具有掌纹识别功能；在此基础上，由于OLED光源本身发出的是三原色光例如红光、绿光和蓝光，因而，相对现有技术中的背光源发出的自然光，本发明示例可以改善由于背光源发出的自然光的影响而导致掌纹识别性能不佳的问题。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为本发明实施例提供的一种显示装置的结构示意图一；
图2为本发明实施例提供的一种显示装置的结构示意图二；
图3为本发明实施例提供的一种显示装置的结构示意图三；
图4为本发明实施例提供的一种OLED显示面板的第二像素单元的结构示 意图；
图5为本发明实施例提供的一种显示单元的结构示意图；
图6为本发明实施例提供的一种掌纹识别单元的结构示意图；
图7为本发明实施例提供的一种显示装置的驱动方法流程图。
附图标记：
01-液晶显示面板；02-OLED光源；03-OLED显示面板；10-第一像素单元；11-第一子像素；12-第二子像素；101-显示单元；102-掌纹识别单元；30-第二像素单元；31-红色子像素；32-绿色子像素；33-蓝色子像素；301-阳极；302-阴极；303-红色发光层；304-绿色发光层；305-蓝色发光层；1011-开关晶体管；1012-像素电极；1013-公共电极；SL-栅线；DL-数据线；T1-第一晶体管；T2-第二晶体管；Scan-扫描线；RL-读取信号线；V1-控制电压端。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动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。
除非另作定义，此处使用的技术术语或者科学术语应当为本领域技术人员所理解的通常意义。本发明专利申请说明书以及权利要求书中使用的“第一”、“第二”以及类似的词语并不表示任何顺序、数量或者重要性，而只是用来区分不同的组成部分。同样，“一个”或“一”等等类似词语也不表示数量限制，而是表示存在至少一个。“连接”或者“相连”等类似的词语并非限定于物理的或者机械的连接，而是可以包括电性的连接，不管是直接的还是间接的。
本发明实施例提供了一种显示装置，如图1所示，该显示装置包括液晶显示面板01，所述液晶显示面板不包括彩色滤光层，且所述液晶显示面板01包括阵列排布的多个第一像素单元10，每个所述第一像素单元包括至少三个子像 素，每个子像素包括显示单元，每个第一像素单元10中的至少一个子像素设有用于识别掌纹的掌纹识别单元；所述显示装置还包括设置于所述液晶显示面板入光侧的光源02，所述光源02用于向所述第一像素单元10中的所述至少三个子像素分别提供三原色光。
此处，所述光原02例如可以是OLED(Organic Light-Emitting Diode，有机电致发光二极管)光源。
需要说明的是，第一，所述第一像素单元10可以包括至少三个子像素。其中，当所述第一像素单元10只包括三个子像素时，则所述光源02为每个所述第一像素单元10的三个子像素分别提供三原色光；当所述第一像素单元10包括三个以上子像素时，则所述光源02为每个所述第一像素单元10的其中三个子像素分别提供三原色光，且该三个子像素中至少有一个包括所述掌纹识别单元，在此基础上，给每个所述第一像素单元10中的其他子像素提供的光可以根据实际需要设置，例如可以是白光，在此不做限定。
第二，本发明实施例以每个第一像素单元10包括三个子像素且其中一个子像素包括掌纹识别单元为例进行说明。其中，为描述方便，如图2所示，将包括显示单元101和掌纹识别单元102的子像素称为第一子像素11，将其余子像素(即：包括显示单元101但不包括掌纹识别单元102的子像素)称为第二子像素12。
第三，所述三原色光例如可以为红光(R)、绿光(G)和蓝光(B)，当然也可以是青色光(C)、品红色光(M)、黄色光(Y)，本发明实施以三原色光为红光、绿光和蓝光为例进行说明。
基于此，所述OLED光源02可以包括多个三原色光源组，每个三原色光源组包括发红光的子光源、发绿光的子光源和发蓝光的子光源。
第四，由于所述液晶显示面板01不包括彩色滤光层，因此液晶显示面板01要实现彩色显示，其中的每个第一像素单元10需在每帧内都能接收到所述OLED光源02发出的红光、绿光和蓝光。
在此基础上，不对所述第一像素单元10的每个子像素中的所述显示单元101的具体结构进行限定，以能实现显示为准。
此外，也不对掌纹识别单元102的具体结构进行限定，以能实现掌纹识别为准。
本发明实施例提供了一种显示装置，利用光源02为液晶显示面板01提供三原色光，可使所述液晶显示面板01在没有彩色滤光层的情况下，也可以进行彩色显示；并且，由于所述液晶显示面板01中集成有掌纹识别单元102，因而使得该显示装置具有掌纹识别功能；在此基础上，由于OLED光源02本身发出的是三原色光例如红光、绿光和蓝光，因而，相对现有技术中的背光源发出的自然光，本发明示例可以改善由于背光源发出的自然光的影响而导致掌纹识别性能不佳的问题。
优选的，如图3所示，所述光源02包括OLED显示面板03；所述OLED显示面板03包括阵列排布的多个第二像素单元30，每个所述第二像素单元30包括红色子像素31、绿色子像素32和蓝色子像素33。
其中，如图4所示，对于上述红色子像素31、绿色子像素32和蓝色子像素33，均可以包括阳极301、阴极302和发光层。具体的，所述红色子像素31中的发光层为红色发光层303，所述绿色子像素32中的发光层为绿色发光层304、蓝色子像素中的发光层为蓝色发光层305。
此外，上述红色子像素31、绿色子像素32和蓝色子像素33中，除包括用于发相应颜色光的发光层外，还可以包括电子传输层和空穴传输层，进一步为了能够提高所述电子和所述空穴注入发光层的效率，还可以包括设置在所述阴极与所述电子传输层之间的电子注入层，以及在所述阳极与所述空穴传输层之间的空穴注入层。
本发明实施例中，为了制作方便，可以将所述OLED显示面板03中所有子像素的阳极相连(即共阳极)，当然也可将所有子像素的阴极相连(即共阴极)，或者可同时将所有子像素的阳极相连，将所有子像素的阴极相连。
又或者，可以将所述OLED显示面板03中每列同色子像素(例如红色子像素31或绿色子像素32或蓝色子像素33)的阳极相连，不同列子像素的阳极不相连，在此基础上，可将所有子像素的阴极相连。
又或者，也可以将所述OLED显示面板03中所有相同颜色子像素的阳极相连，在此基础上，可将所有子像素的阴极相连。
本发明实施例中，一方面，由于OLED显示面板03可以精确控制各子像素的发光颜色、强度等，因此，可以为液晶显示面板01的各子像素中显示单元101提供三原色光源，使所述液晶显示面板01具有更好的显示性能；另一方面，由于OLED显示面板03还可以控制发光区域，因此在掌纹识别阶段，可以只为手掌覆盖区域的掌纹识别单元102提供光源，从而可缩短掌纹识别的时间并且可避免产生不必要的干扰。
进一步优选的，如图3所示，所述第一像素单元10与所述第二像素单元30一一对应。
即，第一像素单元10中的三个子像素分别对应第二像素单元30中的红色子像素31、绿色子像素32和蓝色子像素33。
这样，当每一行第一像素单元10打开时，每个第一像素单元10中的三个子像素便可同时接收到对应的第二像素单元30的三个子像素发出的红光、绿光和蓝光并将其发射出去，从而实现彩色显示。
进一步的，考虑到红光、绿光和蓝光中，蓝光受到外界环境影响最小，因此，本发明实施例中优选液晶显示面板01中第一像素单元的第一子像素11(包括掌纹识别单元102的子像素)与所述OLED显示面板30中第二像素单元的蓝色子像素33一一对应。
优选的，所述液晶显示面板01和所述OLED显示面板03之间通过光学透明树脂胶(Optical Clear Resin，OCR)连接。
即，通过OCR胶将液晶显示面板01和所述OLED显示面板03固定，以形成所述显示装置。其中，采用OCR胶可避免对光透过率产生影响。
基于上述，优选的，所述液晶显示面板01还包括阵列基板和对盒基板，当然还包括位于所述阵列基板和所述对盒基板之间的液晶层；所述显示单元102设置在所述阵列基板上。
如图5所示，所述显示单元101可以包括开关晶体管1011、与所述开关晶体管的漏极电连接的像素电极1012、以及公共电极1013。薄膜晶体管包括栅极、栅绝缘层、半导体有源层、源极和漏极，所述漏极与所述像素电极相连。当然，所述阵列基板还包括与栅极连接的栅线SL，与源极连接的数据线DL。其中，所述栅线连接一行子像素中的显示单元101，所述数据线连接一列子像素中的显示单元。
具体的，对于共平面切换型(In-Plane Switch，简称IPS)阵列基板而言，所述像素电极和所述公共电极同层间隔设置，且均为条状电极；对于高级超维场转换型(Advanced-super Dimensional Switching，简称ADS)阵列基板而言，所述像素电极和所述公共电极不同层设置，其中在上的电极为条状电极，在下的电极为板状电极。基于此，对于对盒基板，其包括黑矩阵。
进一步优选的，所述掌纹识别单元102也位于阵列基板上，所述掌纹识别单元至少包括光敏晶体管，通过所述光敏晶体管可以对掌纹的谷线和脊线进行识别。这样，可以在制备所述显示单元101同时，制备所述掌纹识别单元102，可简化制备过程。
示例的，如图6所示，所述掌纹识别单元102可以包括：第一晶体管T1和第二晶体管T2，所述第一晶体管为光敏晶体管；所述第一晶体管T1的栅极和第一极均与控制电压端V1相连，第二极与所述第二晶体管T2的第一极相连；所述第二晶体管T2的栅极与扫描线Scan相连，第二极与读取信号线RL相连，该读取信号线RL用于将采集的指纹信息传出至相应的接收装置以便对所述指纹信息进行处理。
本发明实施例还提供了一种用于前面实施例所述的显示装置的驱动方法，例如，可通过显示装置中的驱动模块对该显示装置进行驱动，如图7所示，该 驱动方法包括：
S10、驱动模块控制OLED显示面板03中的第二像素单元30使其逐行发光，并对与当前行第二像素单元30对应的液晶显示面板01的第一像素单元10中的显示单元101充电以控制光出射率。
此处，通过对显示单元101的进行充电过程进行控制，可控制液晶的偏转角度，以控制第二像素单元30发出光在通过液晶显示面板01的第一像素单元10后的光强。
OLED显示面板的驱动方式例如可以是逐行驱动、逐列驱动、或以其他方式驱动。优选地，OLED的驱动方式采用逐行驱动方式使其发光，这样能够减低相邻像素发光对其产生的影响，从而提高识别的准确性。
S11、驱动模块控制与当前行第二像素单元30对应的液晶显示面板01的第一像素单元10中的掌纹识别单元102进行掌纹信息的采集。
具体的，当掌纹识别单元102中包括光敏晶体管时，由于光敏晶体管进行掌纹识别是基于入射到手掌的光后反射到光敏晶体管的光，因而，在掌纹识别单元102进行掌纹信息采集时，需保证OLED显示面板03中的第二像素单元30发出的光能通过液晶显示面板01的第一像素单元10而到达手掌。基于此，掌纹识别单元102进行掌纹信息采集可以与液晶显示面板01的正常显示同步进行。
或者，也可以以不同步的方式进行控制。例如，可以分两个阶段对OLED显示面板和液晶显示面板进行驱动，在一帧的第一阶段中，先控制OLED显示面板03中的第二像素单元30发光，同时对与液晶显示面板01的第一像素单元10中的显示单元101充电以控制光出射率，从而使液晶显示面板01进行一帧画面显示。在第二阶段，如前文所述，在驱动OLED显示面板和液晶显示面板的同时控制掌纹识别单元102进行掌纹信息的采集。因此，在第二阶段，即可以使液晶显示面板01正常显示画面，也可使液晶显示面板01显示白画面。
当然，在第二阶段，如果从第一行第二像素单元30发出的光，在经过与 当前行第二像素单元30对应的液晶显示面板01的第一像素单元10发出去后，若经过手掌的反射光路发生偏移的话，可以利用反射光入射到的相应行例如第二行的第一像素单元10中的掌纹识别单元102进行掌纹识别；同样，从第二行第二像素单元30发出的光，在经过与当前行第二像素单元30对应的液晶显示面板01的第一像素单元10发出去后，可以利用反射光入射到的相应行例如第三行的第一像素单元10中的掌纹识别单元102进行掌纹识别；以此类推。
需要说明的是，为了避免信号之间的干扰，上述的第一阶段和第二阶段可以为不同的时间段，且所述第一阶段和第二阶段的时间长度可以不相等。
此外，上述第一阶段和第二阶段可以位于一帧内。即，每帧都重复上述的第一阶段和第二阶段。
基于上述，通过不断循环第一阶段和第二阶段，便可在显示的同时，达到掌纹识别的目的。
示例的，以扫描频率为60Hz，即每一帧的时间为16.67ms为例。一帧时间分为两个阶段。在第一阶段，驱动模块控制OLED显示面板03中的第二像素单元30逐行发光，并对与当前行第二像素单元30对应的液晶显示面板01的第一像素单元10中的显示单元101进行充电，以完成一帧画面显示；在第二阶段，驱动模块控制OLED显示面板03中的第二像素单元30逐行发光，并对与当前行第二像素单元30对应的液晶显示面板01的第一像素单元10中的显示单元101进行充电以显示白画面，同时利用与当前行第二像素单元30对应的液晶显示面板01的第一像素单元10中的掌纹识别单元102进行掌纹信息的采集，以完成掌纹识别。其中，上述两个阶段的时间可以相同也可不相同。
本发明实施例提供了一种显示装置的驱动方法，利用OLED显示面板03逐行为液晶显示面板01提供三原色光，可使所述液晶显示面板01在没有彩色滤光层的情况下，也可以进行彩色显示并且可以避免干扰；并且，由于所述液晶显示面板01中集成有掌纹识别单元102，因而使得该显示装置具有掌纹识别功能；在此基础上，由于OLED显示面板03本身发出的是三原色光且是逐行 发光，因而，相对现有技术中的背光源发出的自然光，本发明示例可以改善由于背光源发出的自然光的影响并且可以使识别的准确性大大提高。
以上所述，仅为本发明的具体实施方式，但本发明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。

Claims (11)

  1. 一种显示装置，其特征在于，包括：
    液晶显示面板，所述液晶显示面板不包括彩色滤光层，且所述液晶显示面板包括阵列排布的多个第一像素单元，每个所述第一像素单元包括至少三个子像素，每个子像素均包括显示单元，每个第一像素单元中的至少一个子像素设有用于识别掌纹的掌纹识别单元；
    设置于所述液晶显示面板入光侧的光源，所述光源用于向所述至少三个子像素中的三个子像素分别提供三原色光，其中，所述三个子像素包括设有掌纹识别单元的所述至少一个子像素。
  2. 根据权利要求1所述的显示装置，其特征在于，所述光源为OLED显示面板；
    所述OLED显示面板还包括阵列排布的多个第二像素单元，每个所述第二像素单元包括红色子像素、绿色子像素和蓝色子像素。
  3. 根据权利要求2所述的显示装置，其特征在于，所述第一像素单元与所述第二像素单元一一对应。
  4. 根据权利要求3所述的显示装置，其特征在于，第一像素单元中设有掌纹识别单元的子像素与第二像素单元中的蓝色子像素一一对应。
  5. 根据权利要求2所述的显示装置，其特征在于，所述OLED显示面板中的每个第二子像素均包括阳极、阴极和设置在阳极和阴极之间的发光层；
    其中，红色子像素中包括红色发光层、绿色子像素中包括绿色发光层、蓝色子像素中包括蓝色发光层。
  6. 根据权利要求2所述的显示装置，其特征在于，所述液晶显示面板和所述OLED显示面板之间通过光学透明树脂胶连接。
  7. 根据权利要求1-6中任一项所述的显示装置，其特征在于，所述液晶显示面板还包括阵列基板和对盒基板；
    所述显示单元设置在所述阵列基板上。
  8. 根据权利要求7所述的显示装置，其特征在于，所述掌纹识别单元位于阵列基板上；
    所述掌纹识别单元至少包括光敏晶体管。
  9. 一种如权利要求1-8中任一项所述的显示装置的驱动方法，其特征在于，包括：
    控制OLED显示面板中的第二像素单元使其发光，并对液晶显示面板的第一像素单元中的显示单元充电以控制光出射率；和
    控制掌纹识别单元进行掌纹信息的采集。
  10. 一种如权利要求9所述的驱动方法，其中，
    控制OLED显示面板中的第二像素单元使其发光的步骤包括控制OLED显示面板中的第二像素单元使其逐行发光；并且，
    对液晶显示面板的第一像素单元中的显示单元充电的步骤包括对与当前正在发光的一行第二像素单元相对应的一行第一像素单元中的显示单元充电。
  11. 一种如权利要求10所述的驱动方法，其中，
    控制掌纹识别单元进行掌纹信息的采集的步骤包括：控制当前正在发光的一行第一像素单元中的掌纹识别单元进行掌纹信息的采集。
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