WO2023197262A1 - 显示装置及其驱动方法 - Google Patents
显示装置及其驱动方法 Download PDFInfo
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- WO2023197262A1 WO2023197262A1 PCT/CN2022/086894 CN2022086894W WO2023197262A1 WO 2023197262 A1 WO2023197262 A1 WO 2023197262A1 CN 2022086894 W CN2022086894 W CN 2022086894W WO 2023197262 A1 WO2023197262 A1 WO 2023197262A1
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- 239000004973 liquid crystal related substance Substances 0.000 claims abstract description 145
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- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 description 1
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/18—Diffraction gratings
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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
Definitions
- the present disclosure relates to the field of display technology, and in particular, to a display device and a driving method thereof.
- Naked-eye 3D display products are favored by users because they can achieve three-dimensional display without the need for auxiliary tools.
- the LCD touch display panel is located on the light exit side of the backlight module
- the LCD grating panel is located between the backlight module and the LCD touch display panel.
- the display device further includes:
- the first polarizer is located between the liquid crystal grating panel and the backlight module;
- the second polarizer is located between the liquid crystal grating panel and the liquid crystal touch display panel;
- the third polarizer is located on the side of the liquid crystal touch display panel away from the liquid crystal grating panel.
- the display device further includes:
- the multi-layer film reflective polarizer is located between the first polarizer and the backlight module.
- the liquid crystal grating panel includes:
- the first array substrate includes a first base substrate and a first transparent electrode layer located between the first base substrate and the liquid crystal touch display panel; the first transparent electrode layer is used to receive AC driving signals;
- the first liquid crystal layer is located between the first array substrate and the liquid crystal touch display panel;
- the first opposite substrate is located between the first liquid crystal layer and the liquid crystal touch display panel, including a second base substrate and a second transparent electrode layer located between the second base substrate and the first liquid crystal layer; the second transparent The electrode layer is used to receive DC drive signals.
- the first transparent electrode layer includes:
- the first sub-electrode layer includes a plurality of first strip-shaped electrodes arranged at intervals;
- the second sub-electrode layer is located between the first sub-electrode layer and the first liquid crystal layer, and includes a plurality of second strip-shaped electrodes arranged at intervals; the extending directions of the first strip-shaped electrodes and the second strip-shaped electrodes are the same, and the second strip-shaped electrodes extend in the same direction.
- the orthographic projection of the two strip-shaped electrodes on the first base substrate covers the orthographic projection of the area between two adjacent first strip-shaped electrodes on the first base substrate;
- the second transparent electrode layer includes planar electrodes arranged on the entire surface.
- the display device further includes: a first driver electrically connected to the liquid crystal touch display panel, a second driver electrically connected to the liquid crystal grating panel, and a main controller electrically connected to the first driver and the second driver. ;
- the main controller is configured to: send first refresh frequency information to the first driver according to the picture to be displayed; send frame rate information and raster drive information corresponding to the first refresh frequency information to the second driver;
- a refresh frequency is the same as the first frequency carried by the frame rate information;
- the first driver is used to: according to the first refresh frequency information, use the first refresh frequency to drive the liquid crystal touch display panel to display the image to be displayed; in the touch recognition stage, use the first drive frequency that matches the first refresh frequency to perform touch recognition ;
- the second driver is used to adjust the driving frequency of the grating driving information according to the frame rate information and generate a grating driving signal of the second driving frequency; the second driving frequency is different from the first refresh frequency and the first driving frequency.
- the second driver includes:
- a receiving circuit for receiving frame rate information and raster drive information, decoding the frame rate information, and outputting decoded information and raster drive information
- a driving signal generation circuit for generating a grating driving signal based on the grating driving information
- the timing control circuit is used to adjust the timing of the grating driving signal according to the decoded information and output the grating driving signal of the second driving frequency.
- the timing control circuit includes:
- Serial peripheral device interface used to output the grating driving signal of the second driving frequency.
- the second driving frequency is greater than the first refresh frequency, and the second driving frequency is less than the first driving frequency.
- the difference between the driving frequency of the grating driving signal and the first refresh frequency is greater than or equal to 10 Hz and less than or equal to 25 Hz.
- the liquid crystal grating panel includes a first transparent electrode layer and a second transparent electrode layer; the grating driving signal includes: an AC driving signal provided to the first transparent electrode layer, and a DC driving signal provided to the second transparent electrode layer. Signal.
- the present disclosure provides a driving method for a display device.
- the method includes:
- the liquid crystal touch display panel is driven to display the image to be displayed, and the liquid crystal grating panel is driven to form alternately arranged light-transmitting areas and dark-state areas.
- the display device includes: a first driver, a second driver, and a main controller;
- the method also includes: the main controller sends first refresh frequency information to the first driver according to the picture to be displayed, and sends frame rate information and raster drive information corresponding to the first refresh frequency information to the second driver; the first refresh frequency information carries The first refresh frequency is the same as the first frequency carried by the frame rate information;
- Driving the LCD touch display panel to display the image to be displayed includes:
- the first driver uses the first refresh frequency to drive the liquid crystal touch display panel to display the image to be displayed according to the first refresh frequency information
- Methods also include:
- the first driving frequency matching the first refresh frequency is used for touch recognition
- the liquid crystal grating panel is driven to form alternately arranged light-transmitting areas and dark-state areas, including:
- the second driver adjusts the driving frequency of the grating driving information according to the frame rate information and generates a grating driving signal of the second driving frequency; the second driving frequency is different from the first refresh frequency and the first driving frequency.
- the second driver adjusts the driving frequency of the grating driving information according to the frame rate information and generates a grating driving signal of the second driving frequency, which specifically includes:
- the timing of the grating driving signal is adjusted according to the decoded information, and the grating driving signal of the second driving frequency is used.
- Figure 1 is a schematic structural diagram of a display device provided by an embodiment of the present disclosure
- Figure 2 is a schematic structural diagram of another display device provided by an embodiment of the present disclosure.
- Figure 3 is a schematic structural diagram of a liquid crystal grating panel provided by an embodiment of the present disclosure
- Figure 4 is a schematic structural diagram of a liquid crystal touch display panel provided by an embodiment of the present disclosure.
- Figure 5 is a schematic structural diagram of another display device provided by an embodiment of the present disclosure.
- Figure 6 is a schematic structural diagram of a second driver provided by an embodiment of the present disclosure.
- FIG. 7 is a schematic flowchart of a driving method of a display device provided by an embodiment of the present disclosure.
- An embodiment of the present disclosure provides a display device, as shown in Figure 1, including:
- the liquid crystal touch display panel 2 is located on the light exit side of the backlight module 1;
- the liquid crystal grating panel 3 is located between the backlight module 1 and the liquid crystal touch display panel 2 .
- the liquid crystal grating panel is located between the backlight module and the liquid crystal touch display panel, so that the liquid crystal grating panel does not shield the touch electrodes in the liquid crystal touch display panel and avoids touch failure. problem, thereby improving the touch sensitivity and accuracy of the display device.
- the liquid crystal grating panel is used to: form alternately arranged light-transmitting areas and dark-state areas in a three-dimensional display mode, divide the light of the left and right eyes into different areas of space, and allow the left-eye image to be input to the viewer through the light-transmitting area.
- the right eye image is input to the viewer's right eye through the light transmission area to achieve naked-eye three-dimensional display.
- the display device further includes:
- the first polarizer 4 is located on one side of the liquid crystal grating panel 3 and the backlight module 1;
- the second polarizer 5 is located between the liquid crystal grating panel 3 and the liquid crystal touch display panel 2;
- the third polarizer 6 is located on the side of the liquid crystal touch display panel 2 away from the liquid crystal grating panel 3 .
- the display device further includes a cover plate located on a side of the third polarizer facing away from the liquid crystal touch display panel.
- the third polarizer and the cover plate can also be bonded together through optical glue.
- the display device further includes:
- the multilayer film reflective polarizer 7 is located between the first polarizer 4 and the backlight module 1 .
- the multi-layer film reflective polarizer is formed by stacking two materials alternately.
- One of the materials is a uniform medium and the other material is a birefringent material.
- birefringence can be achieved.
- the unemitted light can be reused and the light utilization efficiency can be improved.
- a multi-layer film reflective polarizer is disposed between the first polarizer and the backlight module.
- the multi-layer film reflective polarizer can be emitted from the backlight module but not from the multi-layer film.
- the circularly polarized light emitted by the reflective polarizer is reused to improve the light utilization efficiency and thereby improve the light brightness of the display device.
- the liquid crystal grating panel 3 includes:
- the first array substrate 8 includes a first base substrate 9 and a first transparent electrode layer 10 located between the first base substrate 9 and the liquid crystal touch display panel 2;
- the first liquid crystal layer 11 is located between the first array substrate 8 and the liquid crystal touch display panel;
- the first opposite substrate 12 is located between the first liquid crystal layer 11 and the liquid crystal touch display panel, and includes a second base substrate 21 and a second transparent electrode located between the second base substrate 21 and the first liquid crystal layer 11 Layer 13.
- a driving signal is applied to the first transparent electrode layer and the second transparent electrode layer so that the liquid crystal grating panel forms alternately arranged light-transmitting areas and dark-state areas.
- the liquid crystal touch display panel includes:
- the second array substrate 24 includes: a third base substrate 25, a plurality of thin film transistors 26 arranged in an array on one side of the third base substrate 25 facing away from the liquid crystal grating panel, and one side of the thin film transistor 26 facing away from the second base substrate 25. a plurality of pixel electrodes 34 on one side;
- the second liquid crystal layer 27 is located on the side of the second array substrate 24 facing away from the liquid crystal grating panel;
- the second opposite substrate 28 is located on the side of the second liquid crystal layer 27 away from the second array substrate 24, and includes a fourth base substrate 29, a light shielding layer 30 between the fourth base substrate 29 and the second liquid crystal layer 27, and A plurality of color resistors 31; the light-shielding layer 30 includes a plurality of opening areas, and the color resistors 31 are located in the opening areas.
- the liquid crystal touch display panel includes multiple sub-pixels.
- the opening area of the light-shielding layer corresponds to the sub-pixels in a one-to-one manner.
- Each sub-pixel includes a thin film transistor and a pixel electrode, that is, the pixel electrode and the thin film transistor correspond to a one-to-one correspondence.
- the plurality of sub-pixels include, for example, red sub-pixels, blue sub-pixels and green sub-pixels.
- the corresponding color resistors include: a red color resistor corresponding to the red sub-pixel, a blue color resistor corresponding to the blue sub-pixel and a corresponding color resistor to the green sub-pixel. Green color resistance.
- the liquid crystal touch display panel further includes a common electrode.
- the second array substrate includes a common electrode 32; for example, the common electrode 32 is located between the pixel electrode 34 and the second liquid crystal layer 27; or the second counter substrate includes a common electrode, and the common electrode is located on the light shielding layer, for example. and the second liquid crystal layer.
- the liquid crystal touch display panel further includes a plurality of touch electrodes.
- the common electrode 32 is multiplexed as a touch electrode 33 .
- the touch electrodes can also be set individually.
- the thin film transistor 26 includes an active layer 35 , a gate electrode G, a source electrode S, and a drain electrode D; the second substrate substrate 24 further includes: located between the third substrate substrate 25 and the drain electrode D.
- the first alignment layer 41 between the layers 28; the second opposite substrate 27 also includes a second alignment layer 42 between the light shielding layer 30 and the second liquid crystal layer 28.
- the first alignment layer 41 and the second alignment layer 42 are used to align the liquid crystal molecules in the second liquid crystal layer.
- FIG. 4 takes a thin film transistor with a top gate structure as an example for illustration.
- the thin film transistor may also be a bottom gate or other structure.
- the touch electrodes are used to receive AC driving signals.
- the first transparent electrode layer is used to receive AC driving signals; the second transparent electrode layer is used to receive DC driving signals.
- the first opposing substrate is closer to the liquid crystal touch display panel than the first array substrate, so that the second transparent electrode layer is closer to the touch electrode.
- the second transparent electrode layer receives the DC drive signal, which can avoid coupling signals generated when the second transparent electrode layer and the touch electrode that are close to each other receive AC signals, avoid touch failure, and improve touch accuracy.
- the first transparent electrode layer 10 includes:
- the first sub-electrode layer 14 includes a plurality of first strip-shaped electrodes 16 arranged at intervals;
- the second sub-electrode layer 15 is located between the first sub-electrode layer 14 and the first liquid crystal layer 11 and includes a plurality of second strip-shaped electrodes 17 arranged at intervals; the first strip-shaped electrode 16 and the second strip-shaped electrode 17 are The extension directions are the same, and the orthographic projection of the second strip electrode 17 on the first substrate 9 covers the orthographic projection of the area between two adjacent first strip electrodes 16 on the first substrate 9;
- the second transparent electrode layer 13 includes planar electrodes arranged over the entire surface.
- the materials of the first transparent electrode layer and the second transparent electrode layer include indium tin oxide.
- the first array substrate 8 further includes: a first insulating layer 18 located between the first sub-electrode layer 14 and the first base substrate 9 .
- the second insulating layer 19 between the second sub-electrode layer 15 and the third orientation layer 20 on the side of the second sub-electrode layer 15 away from the first sub-electrode layer 14;
- the first opposite substrate 12 also includes: The third insulating layer 23 between the second base substrate 21 and the second transparent electrode layer 13 , and the fourth orientation layer 22 located on the side of the second transparent electrode layer 13 away from the second base substrate 21 .
- the display device loads a driving signal on the second transparent electrode layer, loads a driving signal on part of the first strip electrodes and the second strip electrodes, and loads the remaining first strip electrodes and the second line electrodes.
- a drive signal is loaded; in this way, the liquid crystal in the area corresponding to the first strip electrode and the second strip electrode loaded with the drive signal is deflected, and the liquid crystal in the remaining areas is not deflected to form alternately arranged light-transmitting areas and dark-state areas.
- the positions of the first strip electrode and the second strip electrode for loading the driving signal can be changed as needed, thereby changing the position of the light-transmitting area. In this way, when the position of the viewer changes, the position of the light-transmitting area can also be changed as needed. Adjustments are then made so that the three-dimensional effect is visible to viewers from different positions.
- the third alignment layer and the fourth alignment layer are used to align liquid crystal molecules in the first liquid crystal layer.
- the liquid crystal molecules in the first liquid crystal layer can be oriented through the third alignment layer and the fourth alignment layer so that the liquid crystal molecules are arranged in a twisted nematic (TN) arrangement, that is, the liquid crystal provided by the embodiment of the present disclosure.
- the grating panel is a TN type liquid crystal grating panel.
- the liquid crystal molecules are continuously twisted by 90° between the first array substrate and the first opposite substrate.
- the first transparent electrode layer and the second transparent electrode layer are both When a driving voltage is applied, the liquid crystal molecules are deflected, and the long axes of the liquid crystal molecules are arranged perpendicular to the first array substrate.
- the transmission axis of the first polarizer and the transmission axis of the second polarizer are perpendicular to each other, and the first polarizer converts the incident light into linearly polarized light and injects it into the first liquid crystal layer, when no driving signal is loaded on the area of the first light-transmitting electrode layer, the liquid crystal molecules in the first liquid crystal layer are not deflected, and the polarization direction of the linearly polarized light is rotated 90° after passing through the first liquid crystal layer, and the second polarized light can be transmitted Therefore, the area where the liquid crystal does not deflect corresponds to the light-transmitting area; and for the area where the first light-transmitting electrode layer is loaded with a driving signal, the liquid crystal molecules in the first liquid crystal layer are deflected, and the linearly polarized light has the polarization direction after passing through the first liquid crystal layer. There is no change and cannot pass through the second polarizer, so the area
- the display device further includes: a first driver 43 electrically connected to the liquid crystal touch display panel 2 , a second driver 44 electrically connected to the liquid crystal grating panel 3 , and a first driver 43 electrically connected to the liquid crystal grating panel 3 . 43 and the main controller 45 electrically connected to the second driver 44;
- the main controller 45 is used to: send the first refresh frequency information to the first driver 43 according to the picture to be displayed; send the frame rate information and raster drive information corresponding to the first refresh frequency information to the second driver 44; the first refresh frequency
- the first refresh frequency carried by the information is the same as the first frequency carried by the frame rate information;
- the first driver 43 is used to: use the first refresh frequency to drive the liquid crystal touch display panel to display the image to be displayed according to the first refresh frequency information; in the touch recognition stage, use the first driving frequency that matches the first refresh frequency to perform touch control. identify;
- the second driver 44 is used to adjust the driving frequency of the grating driving information according to the frame rate information and generate a grating driving signal of a second driving frequency; the second driving frequency is different from the first refresh frequency and the first driving frequency.
- the second driving frequency is different from the first refresh frequency and the first driving frequency, so that the driving frequency of the liquid crystal grating panel can avoid the refresh frequency and touch driving frequency of the liquid crystal touch display panel. , thereby avoiding problems that affect touch accuracy such as false positive points or missed negative points due to abnormal collection of touch information by the first driver during the touch phase.
- the frame rate information sent by the main controller to the second driver carries the same frequency as the first refresh frequency carried by the first refresh frequency information sent to the first driver. In this way, even if the first refresh frequency changes, the frame rate information carries the same frequency. The frequency also changes accordingly.
- the grating driving frequency can be dynamically changed by monitoring the first refresh frequency in real time, so that the driving frequency of the liquid crystal grating panel avoids the refresh frequency and touch driving frequency of the liquid crystal touch display panel.
- the ratio of the first driving frequency to the first refresh frequency is an integer.
- the first driving frequency is twice the first refresh frequency
- the first refresh frequency is 60 Hz
- the first driving frequency is 120 Hz.
- the first driver is a Touch and Display Driver Integration (TDDI) chip.
- the first driver can generate a display driving signal according to the first refresh frequency information to drive the liquid crystal touch display panel to display the image to be displayed using the first refresh frequency; and the first driver can generate the first driving frequency according to the first refresh frequency information.
- the touch drive signal is used to perform touch recognition using a first drive frequency that matches the first refresh frequency during the touch recognition stage.
- the second driver 44 includes:
- the receiving circuit 46 is used to receive the frame rate information and the raster drive information, decode the frame rate information, and output the decoded information and the raster drive information;
- the drive signal generation circuit 47 is used to generate a grating drive signal according to the grating drive information
- the timing control circuit 48 is used to adjust the timing of the raster drive signal according to the decoded information, and output the raster drive signal of the second drive frequency.
- the grating driving signal of the second driving frequency includes: an AC driving signal A provided to the first transparent electrode layer, and a DC driving signal B provided to the second transparent electrode layer.
- the voltage value of the AC driving signal A is 0, and the voltage value of the DC driving signal B is 5 volts.
- the timing control circuit includes:
- Serial peripheral device interface used to output the grating driving signal of the second driving frequency.
- the Serial Peripheral Interface (SPI) interface is a high-speed, full-duplex, synchronous communication bus.
- the second driver provided by the embodiment of the present disclosure includes an SPI interface, and the SPI interface can be reserved. Different products are programmed with different frequencies of grating drive signals. After the first refresh rate is fixed, the best second drive frequency is found according to the frame rate signal debugging, and finally the grating drive signal of the second drive frequency is output through the SPI interface to reach the second In other circuits in the driver, the second driving frequency can be solidified.
- the second driving frequency is greater than the first refresh frequency, and the second driving frequency is less than the first driving frequency.
- the difference between the second driving frequency and the first refresh frequency is greater than or equal to 10 Hz and less than or equal to 25 Hz.
- the first refresh frequency can be switched from 60Hz to 90Hz and 120Hz.
- the second driving frequency also needs to be changed accordingly. For example, when the first refresh frequency is 60Hz, the second driving frequency is 70Hz; when the first refresh frequency is 90Hz, the second driving frequency is 115Hz; when the first refresh frequency is 120Hz, the second driving frequency is 140Hz; This allows the second driving frequency to be dynamically adjusted as the first refresh frequency changes to ensure touch accuracy.
- the second driving frequency can be specifically set according to the first refresh frequency and the first driving frequency, as long as it is ensured that the second driving frequency does not interfere with the first refreshing frequency and the first driving frequency.
- the display device further includes a first flexible circuit board and a second flexible circuit board.
- the first driver and the first flexible circuit board are both bound to the second array substrate, for example, and the first flexible circuit board is electrically connected to the main controller.
- the main controller transmits data to the first driver through the first flexible circuit board.
- one end of the second flexible circuit board is bound to the first array substrate, and the other end of the second flexible circuit board is electrically connected to the second driver, so that the second driver provides a grating driving signal to the liquid crystal grating panel through the second flexible circuit board.
- the first array substrate may also include a first connection lead, and the first connection lead is electrically connected to the second flexible circuit board; the liquid crystal grating panel further includes conductive silver glue, so that the second transparent electrode layer is connected to the second flexible circuit board through the conductive silver glue.
- the first connection lead is electrically connected, and the DC driving signal can be transmitted to the second transparent electrode layer through the second flexible circuit board, the first connection lead, and the conductive silver glue.
- the display device provided by the embodiments of the present disclosure is: a mobile phone, a tablet computer, a television, a monitor, a notebook computer, a digital photo frame, a navigator, or any other product or component with a touch display function.
- Other essential components of the display device are understood by those of ordinary skill in the art, and will not be described in detail here, nor should they be used to limit the present disclosure.
- embodiments of the present disclosure also provide a driving method for a display device, as shown in Figure 7, including:
- the driving method of the display device drives the liquid crystal grating panel to form alternately arranged light-transmitting areas and dark-state areas in a three-dimensional display mode, dividing the light of the left and right eyes into different areas of space, so that the left eye image passes through the light-transmitting area.
- the area is input to the left eye of the viewer, so that the right eye image is input to the viewer's right eye through the light-transmitting area to achieve naked-eye three-dimensional display.
- the display device includes: a first driver, a second driver, and a main controller;
- the method also includes: the main controller sends first refresh frequency information to the first driver according to the picture to be displayed, and sends frame rate information and raster drive information corresponding to the first refresh frequency information to the second driver; the first refresh frequency information carries The first refresh frequency is the same as the first frequency carried by the frame rate information;
- Driving the LCD touch display panel to display the image to be displayed includes:
- the first driver uses the first refresh frequency to drive the liquid crystal touch display panel to display the image to be displayed according to the first refresh frequency information
- Methods also include:
- the first driving frequency matching the first refresh frequency is used for touch recognition
- the liquid crystal grating panel is driven to form alternately arranged light-transmitting areas and dark-state areas, including:
- the second driver adjusts the driving frequency of the grating driving information according to the frame rate information and generates a grating driving signal of the second driving frequency; the second driving frequency is different from the first refresh frequency and the first driving frequency.
- the second driving frequency is different from the first refresh frequency and the first driving frequency, so that the driving frequency of the liquid crystal grating panel can avoid the refresh frequency and touch frequency of the liquid crystal touch display panel.
- Control the driving frequency thereby avoiding problems that affect touch accuracy such as false positive points or missed negative points due to abnormal collection of touch information by the first driver during the touch phase.
- the frame rate information sent by the main controller to the second driver carries the same frequency as the first refresh frequency carried by the first refresh frequency information sent to the first driver. In this way, even if the first refresh frequency changes, the frame rate information carries the same frequency.
- the frequency also changes accordingly.
- the grating driving frequency can be dynamically changed by monitoring the first refresh frequency in real time, so that the driving frequency of the liquid crystal grating panel avoids the refresh frequency and touch driving frequency of the liquid crystal touch display panel.
- the second driver adjusts the driving frequency of the grating driving information according to the frame rate information and generates a grating driving signal of the second driving frequency, which specifically includes:
- the timing of the grating driving signal is adjusted according to the decoded information, and the grating driving signal of the second driving frequency is used.
- the liquid crystal grating panel is located between the backlight module and the liquid crystal touch display panel, so that the liquid crystal grating panel does not affect the touch in the liquid crystal touch display panel.
- the electrodes generate shielding to avoid the problem of touch failure, thereby improving the touch sensitivity and accuracy of the display device.
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Abstract
一种显示装置及其驱动方法；显示装置包括：背光模组（1）；液晶触控显示面板（2），位于背光模组（1）的出光侧；液晶光栅面板（3），位于背光模组（1）和液晶触控显示面板（2）之间。
Description
本公开涉及显示技术领域，尤其涉及一种显示装置及其驱动方法。
裸眼3D显示产品由于不需要借助辅助工具即可实现立体显示而受到用户的青睐。
目前裸眼3D显示技术，大尺寸触控产品通常采用非内置触控模组的技术，并通过在液晶显示面板上方增加液晶光栅来实现裸眼3D技术。但是对于平板等中小尺寸产品来说，触控模组内置与显示面板，即采用incell技术。对于采用incell技术的显示产品，如果在显示面板出光侧直接叠加液晶光栅，液晶光栅中的电极会对触控模组中的触控电极产生屏蔽效果，使得触控电极无法感受到人体手指电荷，会出现触控失效的情况，还会导致显示亮度大幅下降。
发明内容
本公开实施例提供的一种显示装置，包括：
背光模组；
液晶触控显示面板，位于背光模组的出光侧；
液晶光栅面板，位于背光模组和液晶触控显示面板之间。
在一些实施例中，显示装置还包括：
第一偏光片，位于液晶光栅面板与背光模组之间；
第二偏光片，位于液晶光栅面板与液晶触控显示面板之间；
第三偏光片，位于液晶触控显示面板背离液晶光栅面板的一侧。
在一些实施例中，显示装置还包括：
多层膜反射型偏光片，位于第一偏光片与背光模组之间。
在一些实施例中，液晶光栅面板包括：
第一阵列基板，包括第一衬底基板以及位于第一衬底基板与液晶触控显示面板之间的第一透明电极层；第一透明电极层用于接收交流驱动信号；
第一液晶层，位于第一阵列基板与液晶触控显示面板之间；
第一对向基板，位于第一液晶层与液晶触控显示面板之间，包括第二衬底基板以及位于第二衬底基板和第一液晶层之间的第二透明电极层；第二透明电极层用于接收直流驱动信号。
在一些实施例中，第一透明电极层包括：
第一子电极层，包括多个间隔设置的第一条形电极；
第二子电极层，位于第一子电极层与第一液晶层之间，包括多个间隔设置的第二条形电极；第一条形电极与第二条形电极的延伸方向相同，且第二条形电极在第一衬底基板的正投影覆盖相邻两个第一条形电极之间的区域在第一衬底基板的正投影；
第二透明电极层包括整面设置的面状电极。
在一些实施例中，显示装置还包括：与液晶触控显示面板电连接的第一驱动器，与液晶光栅面板电连接的第二驱动器，以及与第一驱动器以及第二驱动器电连接的主控制器；
主控制器用于：根据待显示画面，向第一驱动器发送第一刷新频率信息；向第二驱动器发送与第一刷新频率信息对应的帧频信息以及光栅驱动信息；第一刷新频率信息携带的第一刷新频率与帧频信息携带的第一频率相同；
第一驱动器用于：根据第一刷新频率信息，采用第一刷新频率驱动液晶触控显示面板显示待显示画面；触控识别阶段，采用与第一刷新频率匹配的第一驱动频率进行触控识别；
第二驱动器用于：根据帧频信息对光栅驱动信息的驱动频率进行调节，并生成第二驱动频率的光栅驱动信号；第二驱动频率与第一刷新频率以及第一驱动频率均不同。
在一些实施例中，第二驱动器包括：
接收电路，用于接收帧频信息以及光栅驱动信息，对帧频信息进行解码， 并输出解码信息以及光栅驱动信息；
驱动信号生成电路，用于根据光栅驱动信息生成光栅驱动信号；
时序控制电路，用于根据解码信息对光栅驱动信号的时序进行调节，输出第二驱动频率的光栅驱动信号。
在一些实施例中，时序控制电路包括：
串行外围设备接口，用于输出第二驱动频率的光栅驱动信号。
在一些实施例中，第二驱动频率大于第一刷新频率，且第二驱动频率小于第一驱动频率。
在一些实施例中，光栅驱动信号的驱动频率与第一刷新频率之差大于等于10赫兹且小于等于25赫兹。
在一些实施例中，液晶光栅面板包括第一透明电极层和第二透明电极层；光栅驱动信号包括：向第一透明电极层提供的交流驱动信号，以及向第二透明电极层提供的直流驱动信号。
本公开提供的一种显示装置的驱动方法，方法包括：
获取三维显示模式下的待显示画面；
驱动液晶触控显示面板显示待显示画面，以及驱动液晶光栅面板形成交替排列的透光区和暗态区。
在一些实施例中，显示装置包括：第一驱动器，第二驱动器，以及主控制器；
方法还包括：主控制器根据待显示画面向第一驱动器发送第一刷新频率信息，以及向第二驱动器发送与第一刷新频率信息对应的帧频信息以及光栅驱动信息；第一刷新频率信息携带的第一刷新频率与帧频信息携带的第一频率相同；
驱动液晶触控显示面板显示待显示画面，具体包括：
第一驱动器根据第一刷新频率信息，采用第一刷新频率驱动液晶触控显示面板显示待显示画面；
方法还包括：
触控识别阶段，采用与第一刷新频率匹配的第一驱动频率进行触控识别；
驱动液晶光栅面板形成交替排列的透光区和暗态区，具体包括：
第二驱动器根据帧频信息对光栅驱动信息的驱动频率进行调节，并生成第二驱动频率的光栅驱动信号；第二驱动频率与第一刷新频率以及第一驱动频率均不同。
在一些实施例中，第二驱动器根据帧频信息对光栅驱动信息的驱动频率进行调节，并生成第二驱动频率的光栅驱动信号，具体包括：
对帧频信息进行解码并输出解码信息，以及根据光栅驱动信息生成光栅驱动信号；
根据解码信息对光栅驱动信号的时序进行调节，第二驱动频率的光栅驱动信号。
为了更清楚地说明本公开实施例中的技术方案，下面将对实施例描述中所需要使用的附图作简要介绍，显而易见地，下面描述中的附图仅仅是本公开的一些实施例，对于本领域的普通技术人员来讲，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为本公开实施例提供的一种显示装置的结构示意图；
图2为本公开实施例提供的另一种显示装置的结构示意图；
图3为本公开实施例提供的一种液晶光栅面板的结构示意图；
图4为本公开实施例提供的一种液晶触控显示面板的结构示意图；
图5为本公开实施例提供的又一种显示装置的结构示意图；
图6为本公开实施例提供的一种第二驱动器的结构示意图；
图7为本公开实施例提供的一种显示装置的驱动方法的流程示意图。
为使本公开实施例的目的、技术方案和优点更加清楚，下面将结合本公 开实施例的附图，对本公开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公开的一部分实施例，而不是全部的实施例。并且在不冲突的情况下，本公开中的实施例及实施例中的特征可以相互组合。基于所描述的本公开的实施例，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，都属于本公开保护的范围。
除非另外定义，本公开使用的技术术语或者科学术语应当为本公开所属领域内具有一般技能的人士所理解的通常意义。本公开中使用的“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。“包括”或者“包含”等类似的词语意指出现该词前面的元件或者物件涵盖出现在该词后面列举的元件或者物件及其等同，而不排除其他元件或者物件。“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。
需要注意的是，附图中各图形的尺寸和形状不反映真实比例，目的只是示意说明本公开内容。并且自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。
本公开实施例提供了一种显示装置，如图1所示，包括：
背光模组1；
液晶触控显示面板2，位于背光模组1的出光侧；
液晶光栅面板3，位于背光模组1和液晶触控显示面板2之间。
本公开实施例提供的显示装置，液晶光栅面板位于背光模组与液晶触控显示面板之间，从而液晶光栅面板不会对液晶触控显示面板中的触控电极产生屏蔽，避免出现触控失效的问题，从而可以提高显示装置的触控灵敏度及准确度。
需要说明的是，液晶光栅面板用于：在三维显示模式形成交替排列的透光区和暗态区，将左右眼的光分在空间不同区域，使左眼图像通过透光区输入观看者的左眼，使右眼图像通过透光区输入观看者的右眼，以实现裸眼三维显示。
在一些实施例中，如图1所示，显示装置还包括：
第一偏光片4，位于液晶光栅面板3与背光模组1一侧；
第二偏光片5，位于液晶光栅面板3与液晶触控显示面板2之间；
第三偏光片6，位于液晶触控显示面板2背离液晶光栅面板3的一侧。
在具体实施时，第一偏光片与液晶光栅面板之间、第二偏光片与液晶光栅面板之间、第二偏光片与液晶触控显示面板之间、第三偏光片与液晶触控显示面板之间均通过光学胶贴合。
在一些实施例中，显示装置还包括位于第三偏光片背离液晶触控显示面板一侧的盖板。第三偏光片与盖板之间也可通过光学胶贴合。
在一些实施例中，如图2所示，显示装置还包括：
多层膜反射型偏光片7，位于第一偏光片4与背光模组1之间。
需要说明的是，多层膜反射型偏光片由两种材料交替堆叠形成，其中一种材料是均匀介质，另一种材料是双折射材料，光入射至多层膜反射型偏光片可以实现双折射以及在一定频率范围内接近全反射的效果，使得未出射的光再次利用，可以提高光利用率。
本公开实施例提供的显示装置，在第一偏光片与背光模组之间设置有多层膜反射型偏光片，多层膜反射型偏光片可以将从背光模组发出但未从多层膜反射型偏光片出射的圆偏振光再次利用，以提升光利用率，进而提高显示装置的出光亮度。
在一些实施例中，如图3所示，液晶光栅面板3包括：
第一阵列基板8，包括第一衬底基板9以及位于第一衬底基板9与液晶触控显示面板2之间的第一透明电极层10；
第一液晶层11，位于第一阵列基板8与液晶触控显示面板之间；
第一对向基板12，位于第一液晶层11与液晶触控显示面板之间，包括第二衬底基板21以及位于第二衬底基板21和第一液晶层11之间的第二透明电极层13。
在具体实施时，对第一透明电极层以及第二透明电极层加载驱动信号以 使液晶光栅面板形成交替排列的透光区和暗态区。
在一些实施例中，如图4所示，液晶触控显示面板包括：
第二阵列基板24，包括：第三衬底基板25，位于第三衬底基板25背离液晶光栅面板一侧阵列排布的多个薄膜晶体管26，位于薄膜晶体管26背离第二衬底基板25一侧的多个像素电极34；
第二液晶层27，位于第二阵列基板24背离液晶光栅面板一侧；
第二对向基板28，位于第二液晶层27背离第二阵列基板24一侧，包括第四衬底基板29，位于第四衬底基板29和第二液晶层27之间的遮光层30和多个色阻31；遮光层30包括多个开口区，色阻31位于开口区。
在具体实施时，液晶触控显示面板包括多个子像素。遮光层的开口区与子像素一一对应，每一子像素包括薄膜晶体管以及像素电极，即像素电极与薄膜晶体管一一对应。多个子像素例如包括红色子像素、蓝色子像素以及绿色子像素，相应的色阻包括：与红色子像素对应的红色色阻、与蓝色子像素对应的蓝色色阻以及与绿色子像素对应的绿色色阻。
在一些实施例中，液晶触控显示面板还包括公共电极。如图4所示，第二阵列基板包括公共电极32；例如，公共电极32位于像素电极34与第二液晶层27之间；或者，第二对向基板包括公共电极，公共电极例如位于遮光层与第二液晶层之间。
在一些实施例中，液晶触控显示面板还包括多个触控电极。
在一些实施例中，如图4所示，公共电极32复用为触控电极33。
当然，在具体实施时，触控电极也可以单独设置。
在一些实施例中，如图4所示，薄膜晶体管26包括有源层35、栅极G、源极S和漏极D；第二衬底基板24还包括：位于第三衬底基板25与有源层35之间的第一缓冲层36，位于有源层35与栅极G之间的栅绝缘层37，位于栅极G与源极S和漏极D之间的层间绝缘层38，位于源极S和漏极D与像素电极34之间的第一钝化层39，位于像素电极34与公共电极32之间的第二钝化层40，以及位于公共电极32与第二液晶层28之间的第一取向层41；第 二对向基板27还包括位于遮光层30与第二液晶层28之间的第二取向层42。第一取向层41以及第二取向层42用于对第二液晶层中的液晶分子取向。
需要说明的是，图4以薄膜晶体管为顶栅结构为例进行举例说明。在具体实施时，薄膜晶体管也可以为底栅或其他结构。
在一些实施例中，触控电极用于接收交流驱动信号。
在一些实施例中，第一透明电极层用于接收交流驱动信号；第二透明电极层用于接收直流驱动信号。
本公开实施例提供的显示装置，第一对向基板相比于第一阵列基板更靠近液晶触控显示面板，从而第二透明电极层更接近触控电极。第二透明电极层接收直流驱动信号，可以避免距离较近的第二透明电极层和触控电极均接收交流信号时产生耦合信号，避免触控失效，可以提高触控准确度。
在一些实施例中，如图4所示，第一透明电极层10包括：
第一子电极层14，包括多个间隔设置的第一条形电极16；
第二子电极层15，位于第一子电极层14与第一液晶层11之间，包括多个间隔设置的第二条形电极17；第一条形电极16与第二条形电极17的延伸方向相同，且第二条形电极17在第一衬底基板9的正投影覆盖相邻两个第一条形电极16之间的区域在第一衬底基板9的正投影；
第二透明电极层13包括整面设置的面状电极。
在一些实施例中，第一透明电极层以及第二透明电极层的材料均包括氧化铟锡。
在一些实施例中，如图4所示，第一阵列基板8还包括：位于第一子电极层14与第一衬底基板9之间的第一绝缘层18，位于第一子电极层14与第二子电极层15之间的第二绝缘层19，以及位于第二子电极层15背离第一子电极层14一侧的第三取向层20；第一对向基板12还包括：位于第二衬底基板21与第二透明电极层13之间的第三绝缘层23，以及位于第二透明电极层13背离第二衬底基板21一侧的第四取向层22。
本公开实施例提供的显示装置，对第二透明电极层加载驱动信号，对部 分第一条形电极以及第二条形电极加载驱动信号，对其余第一条形电极以及第二条线电极不加载驱动信号；这样，加载驱动信号的第一条形电极以及第二条形电极对应区域的液晶发生偏转，其余区域液晶不发生偏转，以形成交替排列的透光区和暗态区。并且可以根据需要改变加载驱动信号要的第一条形电极和第二条形电极的位置，从而改变透光区的位置，这样当观看者的位置会发生变化，透光区的位置也可以需随之进行调整，以使观看者在不同位置均能观看三维效果。
在一些实施例中，第三取向层以及第四取向层用于对第一液晶层中的液晶分子取向。
在具体实施时，可以通过第三取向层和第四取向层对第一液晶层中的液晶分子取向以使液晶分子呈扭曲向列(Twisted Nematic，TN)排列，即本公开实施例提供的液晶光栅面板为TN型液晶光栅面板。TN型液晶光栅面板的第一液晶层中，未加电状态，液晶分子在第一阵列基板和第一对向基板之间连续扭曲90°，当第一透明电极层和第二透明电极层均加载驱动电压时，液晶分子发生偏转，液晶分子长轴垂直于第一阵列基板排列。
在具体实施时，对于TN型液晶光栅面板，第一偏光片的透光轴与第二偏光片的透光轴方向相互垂直，第一偏光片将入射光转变为线偏振光射入第一液晶层，当对于第一透光电极层未加载驱动信号的区域，第一液晶层中的液晶分子未发生偏转，线偏振光经过第一液晶层后偏振方向旋转90°，可以透过第二偏光片，因此液晶不发生偏转的区域对应透光区；而对于第一透光电极层加载驱动信号的区域，第一液晶层中的液晶分子发生偏转，线偏振光经过第一液晶层后偏振方向未发生变化，不可透过第二偏光片，因此液晶发生偏转的区域对应暗态区。
在一些实施例中，如图5所示，显示装置还包括：与液晶触控显示面板2电连接的第一驱动器43，与液晶光栅面板3电连接的第二驱动器44，以及与第一驱动器43以及第二驱动器44电连接的主控制器45；
主控制器45用于：根据待显示画面，向第一驱动器43发送第一刷新频 率信息；向第二驱动器44发送与第一刷新频率信息对应的帧频信息以及光栅驱动信息；第一刷新频率信息携带的第一刷新频率与帧频信息携带的第一频率相同；
第一驱动器43用于：根据第一刷新频率信息，采用第一刷新频率驱动液晶触控显示面板显示待显示画面；触控识别阶段，采用与第一刷新频率匹配的第一驱动频率进行触控识别；
第二驱动器44用于：根据帧频信息对光栅驱动信息的驱动频率进行调节，并生成第二驱动频率的光栅驱动信号；第二驱动频率与第一刷新频率以及第一驱动频率均不同。
本公开实施例提供的显示装置，第二驱动频率与第一刷新频率以及第一驱动频率均不同，从而可以使得液晶光栅面板的驱动频率避开液晶触控显示面板的刷新频率以及触控驱动频率，从而避免触控阶段造成第一驱动器采集触控信息异常而导致误报点或者漏报点等影响触控准确度的问题。并且，主控制器向第二驱动器发送的帧频信息携带的频率与向第一驱动器发送的第一刷新频率信息携带的第一刷新频率相同，这样即便第一刷新频率发生变化，帧频信息携带的频率也随之变化，可以通过实时监测第一刷新频率来动态改变光栅驱动频率，使得液晶光栅面板的驱动频率避开液晶触控显示面板的刷新频率以及触控驱动频率。
在具体实施时，第一驱动频率与第一刷新频率之比为整数。例如，第一驱动频率为第一刷新频率的2倍，第一刷新频率为60赫兹(Hz)，第一驱动频率为120Hz。
在一些实施例中，第一驱动器为触控与显示驱动器集成(Touch and Display Driver Integration，TDDI)芯片。第一驱动器可以根据第一刷新频率信息生成显示驱动信号，以，采用第一刷新频率驱动液晶触控显示面板显示待显示画面；并且第一驱动器可以根据第一刷新频率信息，生成第一驱动频率的触控驱动信号，以在触控识别阶段，采用与第一刷新频率匹配的第一驱动频率进行触控识别。
在一些实施例中，如图6所示，第二驱动器44包括：
接收电路46，用于接收帧频信息以及光栅驱动信息，对帧频信息进行解码，并输出解码信息以及光栅驱动信息；
驱动信号生成电路47，用于根据光栅驱动信息生成光栅驱动信号；
时序控制电路48，用于根据解码信息对光栅驱动信号的时序进行调节，输出第二驱动频率的光栅驱动信号。
在一些实施例中，第二驱动频率的光栅驱动信号包括：向第一透明电极层提供的交流驱动信号A，以及向第二透明电极层提供的直流驱动信号B。
在具体实施时，交流驱动信号A的电压值为0，直流驱动信号B的电压值为5伏。
在一些实施例中，时序控制电路包括：
串行外围设备接口，用于输出第二驱动频率的光栅驱动信号。
需要说明的是，串行外围设备(Serial Peripheral Interface，SPI)接口是一种高速、全双工、同步的通信总线，本公开实施例提供的第二驱动器包括SPI接口，SPI接口可以预留出来针对不同产品烧录不同光栅驱动信号的频率，第一刷新率固定后，根据帧频信号调试找到最佳的第二驱动频率后，最后通过SPI接口输出第二驱动频率的光栅驱动信号到达第二驱动器中的其他电路中，从而可以实现对第二驱动频率的固化。
在一些实施例中，第二驱动频率大于第一刷新频率，且第二驱动频率小于第一驱动频率。
在一些实施例中，第二驱动频率与第一刷新频率之差大于等于10赫兹且小于等于25赫兹。
在具体实施时，第一刷新频率列入可以从60Hz向90Hz及120Hz做切换，相应的，第二驱动频率也需随之改变。例如，当第一刷新频率为60Hz时，第二驱动频率为70Hz；当第一刷新频率为90Hz时，第二驱动频率为115Hz，当第一刷新频率为120Hz时，第二驱动频率为140Hz；从而可以实现随着第一刷新频率变化的时候，动态调整第二驱动频率，确保触控准确度。
需要说明的是，第二驱动频率可以根据第一刷新频率以及第一驱动频率进行具体设置，只要保证第二驱动频率不会对第一刷新频率以及第一驱动频率造成干扰即可。
在一些实施例中，显示装置还包括，第一柔性电路板以及第二柔性电路板。在具体实施时，第一驱动器、第一柔性电路板例如均与第二阵列基板绑定，且第一柔性电路板与主控制器电连接，主控制器通过第一柔性电路板向第一驱动器提供第一刷新频率信息。第二柔性电路板的一端例如与第一阵列基板绑定，第二柔性电路板的另一端与第二驱动器电连接，从而第二驱动器通过第二柔性电路板向液晶光栅面板提供光栅驱动信号。
在具体实施时，第一阵列基板还可以包括第一连接引线，第一连接引线与第二柔性电路板电连接；液晶光栅面板还包括导电银胶，从而第二透明电极层通过导电银胶与第一连接引线电连接，直流驱动信号可以通过第二柔性电路板、第一连接引线、导电银胶传输至第二透明电极层。
在具体实施时，本公开实施例提供的显示装置为：手机、平板电脑、电视机、显示器、笔记本电脑、数码相框、导航仪等任何具有触控显示功能的产品或部件。对于该显示装置的其它必不可少的组成部分均为本领域的普通技术人员应该理解具有的，在此不做赘述，也不应作为对本公开的限制。
基于同一发明构思，本公开实施例还提供了一种显示装置的驱动方法，如图7所示，包括：
S101、获取三维显示模式下的待显示画面；
S102、驱动液晶触控显示面板显示待显示画面，以及驱动液晶光栅面板形成交替排列的透光区和暗态区。
本公开实施例提供的显示装置的驱动方法，驱动液晶光栅面板在三维显示模式形成交替排列的透光区和暗态区，将左右眼的光分在空间不同区域，使左眼图像通过透光区输入观看者的左眼，使右眼图像通过透光区输入观看者的右眼，以实现裸眼三维显示。
在一些实施例中，显示装置包括：第一驱动器，第二驱动器，以及主控 制器；
方法还包括：主控制器根据待显示画面向第一驱动器发送第一刷新频率信息，以及向第二驱动器发送与第一刷新频率信息对应的帧频信息以及光栅驱动信息；第一刷新频率信息携带的第一刷新频率与帧频信息携带的第一频率相同；
驱动液晶触控显示面板显示待显示画面，具体包括：
第一驱动器根据第一刷新频率信息，采用第一刷新频率驱动液晶触控显示面板显示待显示画面；
方法还包括：
触控识别阶段，采用与第一刷新频率匹配的第一驱动频率进行触控识别；
驱动液晶光栅面板形成交替排列的透光区和暗态区，具体包括：
第二驱动器根据帧频信息对光栅驱动信息的驱动频率进行调节，并生成第二驱动频率的光栅驱动信号；第二驱动频率与第一刷新频率以及第一驱动频率均不同。
本公开实施例提供的显示装置的驱动方法，第二驱动频率与第一刷新频率以及第一驱动频率均不同，从而可以使得液晶光栅面板的驱动频率避开液晶触控显示面板的刷新频率以及触控驱动频率，从而避免触控阶段造成第一驱动器采集触控信息异常而导致误报点或者漏报点等影响触控准确度的问题。并且，主控制器向第二驱动器发送的帧频信息携带的频率与向第一驱动器发送的第一刷新频率信息携带的第一刷新频率相同，这样即便第一刷新频率发生变化，帧频信息携带的频率也随之变化，可以通过实时监测第一刷新频率来动态改变光栅驱动频率，使得液晶光栅面板的驱动频率避开液晶触控显示面板的刷新频率以及触控驱动频率。
在一些实施例中，第二驱动器根据帧频信息对光栅驱动信息的驱动频率进行调节，并生成第二驱动频率的光栅驱动信号，具体包括：
对帧频信息进行解码并输出解码信息，以及根据光栅驱动信息生成光栅驱动信号；
根据解码信息对光栅驱动信号的时序进行调节，第二驱动频率的光栅驱动信号。
综上所述，本公开实施例提供的显示装置及其驱动方法，液晶光栅面板位于背光模组与液晶触控显示面板之间，从而液晶光栅面板不会对液晶触控显示面板中的触控电极产生屏蔽，避免出现触控失效的问题，从而可以提高显示装置的触控灵敏度及准确度。
尽管已描述了本发明的优选实施例，但本领域内的技术人员一旦得知了基本创造性概念，则可对这些实施例作出另外的变更和修改。所以，所附权利要求意欲解释为包括优选实施例以及落入本发明范围的所有变更和修改。
显然，本领域的技术人员可以对本发明实施例进行各种改动和变型而不脱离本发明实施例的精神和范围。这样，倘若本发明实施例的这些修改和变型属于本发明权利要求及其等同技术的范围之内，则本发明也意图包含这些改动和变型在内。
Claims (14)
- 一种显示装置，其中，包括：背光模组；液晶触控显示面板，位于所述背光模组的出光侧；液晶光栅面板，位于所述背光模组和所述液晶触控显示面板之间。
- 根据权利要求1所述的显示装置，其中，所述显示装置还包括：第一偏光片，位于所述液晶光栅面板与所述背光模组之间；第二偏光片，位于所述液晶光栅面板与所述液晶触控显示面板之间；第三偏光片，位于所述液晶触控显示面板背离所述液晶光栅面板的一侧。
- 根据权利要求2所述的显示装置，其中，所述显示装置还包括：多层膜反射型偏光片，位于所述第一偏光片与所述背光模组之间。
- 根据权利要求1～3任一项所述的显示装置，其中，所述液晶光栅面板包括：第一阵列基板，包括第一衬底基板以及位于所述第一衬底基板与所述液晶触控显示面板之间的第一透明电极层；所述第一透明电极层用于接收交流驱动信号；第一液晶层，位于所述第一阵列基板与所述液晶触控显示面板之间；第一对向基板，位于所述第一液晶层与所述液晶触控显示面板之间，包括第二衬底基板以及位于所述第二衬底基板和所述第一液晶层之间的第二透明电极层；所述第二透明电极层用于接收直流驱动信号。
- 根据权利要求4所述的显示装置，其中，所述第一透明电极层包括：第一子电极层，包括多个间隔设置的第一条形电极；第二子电极层，位于所述第一子电极层与所述第一液晶层之间，包括多个间隔设置的第二条形电极；所述第一条形电极与所述第二条形电极的延伸方向相同，且所述第二条形电极在所述第一衬底基板的正投影覆盖相邻两个所述第一条形电极之间的区域在所述第一衬底基板的正投影；所述第二透明电极层包括整面设置的面状电极。
- 根据权利要求1～5任一项所述的显示装置，其中，所述显示装置还包括：与所述液晶触控显示面板电连接的第一驱动器，与所述液晶光栅面板电连接的第二驱动器，以及与所述第一驱动器以及所述第二驱动器电连接的主控制器；所述主控制器用于：根据待显示画面，向所述第一驱动器发送第一刷新频率信息；向所述第二驱动器发送与所述第一刷新频率信息对应的帧频信息以及光栅驱动信息；所述第一刷新频率信息携带的第一刷新频率与所述帧频信息携带的第一频率相同；所述第一驱动器用于：根据所述第一刷新频率信息，采用所述第一刷新频率驱动所述液晶触控显示面板显示待显示画面；触控识别阶段，采用与所述第一刷新频率匹配的第一驱动频率进行触控识别；所述第二驱动器用于：根据所述帧频信息对所述光栅驱动信息的驱动频率进行调节，并生成第二驱动频率的光栅驱动信号；所述第二驱动频率与所述第一刷新频率以及所述第一驱动频率均不同。
- 根据权利要求6所述的显示装置，其中，所述第二驱动器包括：接收电路，用于接收所述帧频信息以及所述光栅驱动信息，对所述帧频信息进行解码，并输出解码信息以及所述光栅驱动信息；驱动信号生成电路，用于根据所述光栅驱动信息生成光栅驱动信号；时序控制电路，用于根据所述解码信息对所述光栅驱动信号的时序进行调节，输出所述第二驱动频率的光栅驱动信号。
- 根据权利要求7所述的显示装置，其中，所述时序控制电路包括：串行外围设备接口，用于输出所述第二驱动频率的光栅驱动信号。
- 根据权利要求6～8任一项所述的显示装置，其中，所述第二驱动频率大于所述第一刷新频率，且所述第二驱动频率小于所述第一驱动频率。
- 根据权利要求9所述的显示装置，其中，所述光栅驱动信号的驱动频率与所述第一刷新频率之差大于等于10赫兹且小于等于25赫兹。
- 根据权利要求6～10任一项所述的显示装置，其中，所述液晶光栅面板包括第一透明电极层和第二透明电极层；所述光栅驱动信号包括：向所述第一透明电极层提供的交流驱动信号，以及向所述第二透明电极层提供的直流驱动信号。
- 一种根据权利要求1～11任一项所述的显示装置的驱动方法，其中，所述方法包括：获取三维显示模式下的待显示画面；驱动所述液晶触控显示面板显示所述待显示画面，以及驱动所述液晶光栅面板形成交替排列的透光区和暗态区。
- 根据权利要求12所述的方法，其中，所述显示装置包括：第一驱动器，第二驱动器，以及主控制器；所述方法还包括：所述主控制器根据待显示画面向所述第一驱动器发送第一刷新频率信息，以及向所述第二驱动器发送与所述第一刷新频率信息对应的帧频信息以及光栅驱动信息；所述第一刷新频率信息携带的第一刷新频率与所述帧频信息携带的第一频率相同；所述驱动所述液晶触控显示面板显示所述待显示画面，具体包括：所述第一驱动器根据所述第一刷新频率信息，采用第一刷新频率驱动所述液晶触控显示面板显示所述待显示画面；所述方法还包括：触控识别阶段，采用与所述第一刷新频率匹配的第一驱动频率进行触控识别；所述驱动所述液晶光栅面板形成交替排列的透光区和暗态区，具体包括：所述第二驱动器根据所述帧频信息对所述光栅驱动信息的驱动频率进行调节，并生成第二驱动频率的光栅驱动信号；所述第二驱动频率与所述第一刷新频率以及所述第一驱动频率均不同。
- 根据权利要求13所述的方法，其中，所述第二驱动器根据所述帧频信息对所述光栅驱动信息的驱动频率进行调节，并生成第二驱动频率的光栅 驱动信号，具体包括：对所述帧频信息进行解码并输出解码信息，以及根据所述光栅驱动信息生成光栅驱动信号；根据所述解码信息对所述光栅驱动信号的时序进行调节，第二驱动频率的光栅驱动信号。
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