WO2018227741A1 - 用于驱动裸眼3d液晶棱镜的系统和方法 - Google Patents

用于驱动裸眼3d液晶棱镜的系统和方法 Download PDF

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Publication number
WO2018227741A1
WO2018227741A1 PCT/CN2017/097037 CN2017097037W WO2018227741A1 WO 2018227741 A1 WO2018227741 A1 WO 2018227741A1 CN 2017097037 W CN2017097037 W CN 2017097037W WO 2018227741 A1 WO2018227741 A1 WO 2018227741A1
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Prior art keywords
driving
driving voltage
liquid crystal
human eye
crystal prism
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Ceased
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PCT/CN2017/097037
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English (en)
French (fr)
Inventor
王利民
黄泰钧
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TCL China Star Optoelectronics Technology Co Ltd
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Shenzhen China Star Optoelectronics Technology Co Ltd
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Priority to US15/562,834 priority Critical patent/US10823977B2/en
Publication of WO2018227741A1 publication Critical patent/WO2018227741A1/zh
Anticipated expiration legal-status Critical
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    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B30/00—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images
    • G02B30/20—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes
    • G02B30/26—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the autostereoscopic type
    • G02B30/27—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the autostereoscopic type involving lenticular arrays
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B30/00—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images
    • G02B30/20—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes
    • G02B30/26—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the autostereoscopic type
    • G02B30/27—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the autostereoscopic type involving lenticular arrays
    • G02B30/28—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the autostereoscopic type involving lenticular arrays involving active lenticular arrays
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B30/00—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images
    • G02B30/20—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes
    • G02B30/26—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the autostereoscopic type
    • G02B30/30—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the autostereoscopic type involving parallax barriers
    • G02B30/31—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the autostereoscopic type involving parallax barriers involving active parallax barriers
    • 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
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    • G02F1/13306—Circuit arrangements or driving methods for the control of single liquid crystal cells
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1343—Electrodes
    • G—PHYSICS
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    • 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
    • G02F1/29—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 position or the direction of light beams, i.e. deflection
    • 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
    • G09G3/001—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes using specific devices not provided for in groups G09G3/02 - G09G3/36, e.g. using an intermediate record carrier such as a film slide; Projection systems; Display of non-alphanumerical information, solely or in combination with alphanumerical information, e.g. digital display on projected diapositive as background
    • G09G3/003—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes using specific devices not provided for in groups G09G3/02 - G09G3/36, e.g. using an intermediate record carrier such as a film slide; Projection systems; Display of non-alphanumerical information, solely or in combination with alphanumerical information, e.g. digital display on projected diapositive as background to produce spatial visual effects
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
    • H04N13/30—Image reproducers
    • H04N13/302—Image reproducers for viewing without the aid of special glasses, i.e. using autostereoscopic displays
    • H04N13/322—Image reproducers for viewing without the aid of special glasses, i.e. using autostereoscopic displays using varifocal lenses or mirrors
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
    • H04N13/30—Image reproducers
    • H04N13/366—Image reproducers using viewer tracking
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/0093—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 with means for monitoring data relating to the user, e.g. head-tracking, eye-tracking
    • 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
    • G02F1/29—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 position or the direction of light beams, i.e. deflection
    • G02F1/294—Variable focal length devices
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/02—Improving the quality of display appearance
    • G09G2320/028—Improving the quality of display appearance by changing the viewing angle properties, e.g. widening the viewing angle, adapting the viewing angle to the view direction
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/02—Improving the quality of display appearance
    • G09G2320/0285—Improving the quality of display appearance using tables for spatial correction of display data
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2354/00—Aspects of interface with display user
    • 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
    • G09G3/3433—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 light modulating elements actuated by an electric field and being other than liquid crystal devices and electrochromic devices
    • G09G3/348—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 light modulating elements actuated by an electric field and being other than liquid crystal devices and electrochromic devices based on the deformation of a fluid drop, e.g. electrowetting
    • 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

Definitions

  • the present invention belongs to the field of display control technology, and in particular, to a system and method for driving a naked-eye 3D liquid crystal prism.
  • the naked-eye 3D display technology has become a research hotspot of new display technologies due to its wide application prospects.
  • the naked eye 3D display technology can be divided into three categories: light barrier technology, columnar prism technology and directional backlight technology.
  • the columnar prism technology can be divided into fixed prism technology according to the difference of prism design.
  • liquid crystal prism technology The naked-eye 3D liquid crystal prism technology is widely marketed for its easy display of display characteristics and ease of 2D and 3D switching.
  • the present invention provides a system and method for driving a naked-eye 3D liquid crystal prism for adjusting the shape of a liquid crystal prism in a display device, thereby adjusting an optimal viewing distance, and improving a viewing experience of a naked-eye 3D display.
  • a system for driving a naked-eye 3D liquid crystal prism comprising:
  • a driving voltage determining module configured to determine each driver in the display panel according to the position information of the human eye space The driving voltage corresponding to the electrode;
  • a liquid crystal prism driving module configured to generate a driving signal for driving the corresponding driving electrode according to the driving voltage to adjust a shape of the liquid crystal prism.
  • the driving voltage determining module further comprises:
  • a distance calculation unit configured to calculate a vertical distance between the human eye and the display panel according to the human eye space position information
  • a driving electrode voltage selection unit configured to select a driving voltage corresponding to each of the driving electrodes according to the vertical distance.
  • the driving voltage determination module further includes a display lookup table for storing correspondence data of the vertical distance and a driving voltage corresponding to each driving electrode.
  • the correspondence data makes the shape of the liquid crystal prism symmetrical with respect to a central axis of the display panel in the longitudinal direction.
  • the driving voltage determining module further includes a human eye detection result receiving unit, configured to receive the human eye space position information.
  • the driving voltage determination module further includes a signal output unit for outputting each driving voltage to the liquid crystal prism driving module.
  • a human eye recognition module is further included for acquiring the human eye space position information.
  • a method for driving a naked-eye 3D liquid crystal prism comprising:
  • a driving signal for driving the corresponding driving electrode is generated based on the driving voltage to adjust a shape of the liquid crystal prism.
  • determining the driving voltage corresponding to each driving electrode in the display panel according to the human eye space position information further includes:
  • the driving voltage corresponding to each driving electrode is selected according to the vertical distance.
  • selecting a driving voltage corresponding to each driving electrode according to the vertical distance further includes:
  • the invention realizes the adjustment of the optimal viewing distance by changing the shape of the liquid crystal prism, so that any viewing distance can be the optimal viewing distance, thereby improving the viewing experience of the naked-eye 3D display.
  • FIG. 1 is a schematic view showing an optimal viewing distance and a viewing area of a naked-eye 3D liquid crystal prism in the prior art
  • FIG. 2 is a schematic structural diagram of a system for driving a naked-eye 3D liquid crystal prism according to an embodiment of the present invention
  • FIG. 3 is a schematic view showing a structure of a liquid crystal prism and a driving electrode thereof in the prior art
  • FIG. 4 is a schematic diagram showing a liquid crystal prism driving voltage and driving electrode setting according to an embodiment of the present invention
  • FIG. 5 is a schematic diagram of a liquid crystal prism driving voltage and driving electrode setting according to another embodiment of the present invention.
  • FIG. 6 is a flow chart of a method for driving a naked-eye 3D liquid crystal prism, in accordance with one embodiment of the present invention.
  • the present invention provides a system and method for driving a naked-eye 3D liquid crystal prism by adjusting the shape of the liquid crystal prism instead of displaying the data in the left and right eye views of the person, thereby achieving the adjustment of the optimal viewing distance. Improve the viewing experience of the naked-eye 3D display.
  • FIG. 2 is a schematic structural diagram of a system for driving a naked-eye 3D liquid crystal prism according to an embodiment of the present invention. The present invention will be described in detail below with reference to FIG.
  • the system for driving a naked-eye 3D liquid crystal prism includes a driving voltage determining module 11 and a liquid crystal prism driving module 12.
  • the driving voltage determining module 11 is configured to determine a driving voltage corresponding to each driving electrode in the display panel according to the human eye space position information.
  • the liquid crystal prism driving module 12 is configured to generate a driving signal for driving the corresponding driving electrode according to the driving voltage to adjust the shape of the liquid crystal prism.
  • the voltage of the driving electrode for driving the liquid crystal prism is adjusted based on the position information of the human eye space, and the shape of the liquid crystal prism is adjusted, so that the shape of the liquid crystal prism changes with the change of the position information of the human eye space, and the naked eye can be improved. 3D display viewing experience.
  • the driving voltage determining module further includes a distance calculating unit 111 and a driving electrode voltage selecting unit 112.
  • the distance calculation unit 111 is configured to calculate a vertical distance between the human eye and the display panel according to the human eye space position information.
  • the drive electrode voltage selection unit 112 is configured to select a drive voltage corresponding to each drive electrode according to a vertical distance.
  • the driving voltage determining module 11 further includes a display lookup table 113 for storing correspondence data of vertical distances and driving voltages corresponding to the respective driving electrodes. That is, the lookup table 113 stores data of different vertical distances between the human eye and the display panel and driving voltages of the respective electrodes under different vertical distance conditions.
  • FIG. 3 is a schematic diagram of a liquid crystal prism and a driving electrode on both sides of the conventional display.
  • the anode side of the liquid crystal prism 41 is provided with a plurality of anode driving electrodes 42, such as an electrode 1, an electrode 2, and an electrode. 3.
  • Electrode 4 and electrode 5, and a cathode drive electrode 43 is disposed on the cathode side, R represents right eye image data, and L represents left eye image data.
  • the liquid crystal prisms 41 can have different shapes and thus different curvatures, thereby achieving optimum viewing performance at different viewing distances. .
  • the correspondence data makes the shape of the liquid crystal prism symmetrical with respect to the central axis of the display panel in the longitudinal direction. Specifically, as shown in Table 1.
  • Different driving voltages are applied to the five anode driving electrodes in FIG. 3, and the values of the applied driving voltages are kept symmetrical based on the central vertical direction of the display panel (at the electrode 3). Since the cathode driving electrode 43 is a one-sided electrode and has a single potential as a whole, it is not necessary to apply a different driving voltage. Of course, when the cathode driving electrode 43 is also a plurality of driving electrode structures similar to the anode driving electrode 42, different driving voltages may be applied to the respective driving electrodes of the cathode driving electrode 43, and the present invention is not limited thereto. this.
  • the human eye recognition module detects that the distance between the human eye and the display panel is 3 m
  • the voltages of the fifth row in the display lookup table (Table 1) are selected as the driving voltages of the corresponding driving electrodes, as shown in FIG. 4 .
  • the voltages of the third row in the display lookup table (Table 1) are selected as the driving voltages of the corresponding driving electrodes, as shown in FIG.
  • the shape of the liquid crystal prism can be adjusted according to the position of the human eye, and the viewing effect of the naked eye 3D can be improved.
  • the system further includes a human eye recognition module 13 for acquiring human eye spatial location information.
  • the human eye space position information includes a binocular midpoint coordinate and a binocular distance of a person who views the display screen.
  • the human face recognition module disposed on the display can capture the face image facing the screen viewing area, and recognize the binocular through hole coordinates in the face image, thereby obtaining the binocular midpoint coordinates and the binocular pupil distance.
  • the midpoint coordinates of both eyes are the coordinates of the midpoint of the line connecting the pupil coordinates of the eyes, and the distance between the eyes is the distance between the pupil coordinates of the eyes.
  • the binocular midpoint coordinates and the binocular pupil distances of the face image are periodically acquired at predetermined intervals.
  • the distance calculation unit 111 calculates the vertical distance between the binocular midpoint coordinates and the display panel according to a preset algorithm.
  • a preset algorithm such as Zhang Zhengyou calibration
  • Zhang Zhengyou calibration can be used to obtain a relationship between the coordinates of the midpoint of the binocular and the vertical distance between the display panels, and based on the relationship curve, the vertical distance between the coordinates of the midpoint of the binocular and the display panel is calculated.
  • other methods may be used to calculate the vertical distance between the midpoint coordinates of the eyes and the display panel, and the present invention is not limited thereto.
  • the driving electrode voltage selection unit 112 can select the driving voltage corresponding to each driving electrode according to the vertical distance calculated by the distance calculating unit 111. That is, the drive electrode voltage selection unit 112 selects different drive voltages corresponding to different vertical distances, and the different drive voltages cause the liquid crystal prisms to have different shapes. Different shapes of liquid crystal prisms have different curvatures, and different curvatures correspond to different optimal viewing distances. Therefore, by adjusting the shape of the liquid crystal prism, it is possible to achieve optimal viewing at any distance. The effect is that any distance is the best viewing distance.
  • the driving voltage determining module 11 further includes a human eye detection result receiving unit 114 for receiving human eye space position information.
  • the driving voltage determining module 11 further includes a signal output unit 115 for outputting a driving voltage signal to the liquid crystal prism driving module 12.
  • the liquid crystal prism driving module 12 generates a corresponding driving signal according to the driving voltage signal and supplies it to the corresponding driving electrode.
  • the driving voltage corresponding to each driving electrode in the display panel is determined based on the human eye space position information. Specifically, the driving voltage determination module 11 calculates a vertical distance between the human eye and the display panel according to the human eye space position information, and then selects a driving voltage corresponding to each driving electrode according to the vertical distance. Selecting a driving voltage corresponding to each driving electrode according to a vertical distance, and further selecting a driving voltage corresponding to each driving electrode according to a correspondence relationship data between a vertical distance and a driving voltage of each driving electrode, wherein the correspondence data makes the shape of the liquid crystal prism relate to the display panel
  • the central axis of the longitudinal direction remains symmetrical.
  • step S120 a drive signal for driving the corresponding drive electrode is generated based on the drive voltage to adjust the shape of the liquid crystal prism.
  • the liquid crystal prism driving module 12 generates a driving signal for driving the corresponding driving electrode according to the driving voltage to adjust the shape of the liquid crystal prism.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Computer Hardware Design (AREA)
  • Theoretical Computer Science (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Liquid Crystal (AREA)
  • Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)
  • Liquid Crystal Display Device Control (AREA)

Abstract

一种用于驱动裸眼3D液晶棱镜的系统和方法，该系统包括：驱动电压确定模块(11)，其用于根据人眼空间位置信息，确定显示面板中各驱动电极对应的驱动电压；液晶棱镜驱动模块(12)，其用于根据该驱动电压生成驱动对应驱动电极的驱动信号，以对该液晶棱镜的形状进行调整。

Description

用于驱动裸眼3D液晶棱镜的系统和方法
相关申请的交叉引用
本申请要求享有2017年6月12日提交的名称为“用于驱动裸眼3D液晶棱镜的系统和方法”的中国专利申请CN201710436410.4的优先权，该申请的全部内容通过引用并入本文中。
技术领域
本发明属于显示控制技术领域，具体地说，尤其涉及一种用于驱动裸眼3D液晶棱镜的系统和方法。
背景技术
裸眼3D显示技术因其广泛的应用前景而成为新型显示技术的研究热点。根据实现裸眼3D效果的技术原理不同，裸眼3D显示技术可分为光屏障技术、柱状棱镜技术和方向性背光技术三大类，其中，柱状棱镜技术又可根据棱镜的设计差异分为固定棱镜技术和液晶棱镜技术。裸眼3D液晶棱镜技术由于显示特性易于调节，且便于2D和3D切换而广受好评。
传统的裸眼3D液晶棱镜有固定的最佳观看区域和距离。设计完成后，最佳观看区域和距离便固定下来，液晶棱镜等效为一个凸透镜。该等效凸透镜的曲率决定了左右眼画面的偏折情况，进而决定最佳观看距离(最佳观看区域为正对显示器中间，且左右眼分别位于左右视区之内)，如图1所示。
发明内容
为解决以上问题，本发明提供了一种用于驱动裸眼3D液晶棱镜的系统和方法，用以调整显示装置中液晶棱镜的形状，进而调整最佳观看距离，改善裸眼3D显示器的观看体验。
根据本发明的一个方面，提供了一种用于驱动裸眼3D液晶棱镜的系统，包括：
驱动电压确定模块，其用于根据人眼空间位置信息，确定显示面板中各驱动 电极对应的驱动电压；
液晶棱镜驱动模块，其用于根据所述驱动电压生成驱动对应驱动电极的驱动信号，以对所述液晶棱镜的形状进行调整。
根据本发明的一个实施例，所述驱动电压确定模块进一步包括：
距离计算单元，其用于根据所述人眼空间位置信息计算人眼与显示面板之间的垂直距离；
驱动电极电压选择单元，其用于根据所述垂直距离选择各驱动电极对应的驱动电压。
根据本发明的一个实施例，所述驱动电压确定模块还包括显示查找表，其用于存储所述垂直距离与各驱动电极对应的驱动电压的对应关系数据。
根据本发明的一个实施例，所述对应关系数据使得液晶棱镜的形状关于显示面板在纵向方向的中心轴保持对称。
根据本发明的一个实施例，所述驱动电压确定模块还包括人眼侦测结果接收单元，其用于接收所述人眼空间位置信息。
根据本发明的一个实施例，所述驱动电压确定模块还包括信号输出单元，其用于将各驱动电压输出至所述液晶棱镜驱动模块。
根据本发明的一个实施例，还包括人眼识别模块，其用于获取所述人眼空间位置信息。
根据本发明的另一个方面，还提了一种用于驱动裸眼3D液晶棱镜的方法，包括：
根据人眼空间位置信息，确定显示面板中各驱动电极对应的驱动电压；
根据所述驱动电压生成驱动对应驱动电极的驱动信号，以对液晶棱镜的形状进行调整。
根据本发明的一个实施例，根据人眼空间位置信息，确定显示面板中各驱动电极对应的驱动电压进一步包括：
根据所述人眼空间位置信息计算人眼与显示面板之间的垂直距离；
根据所述垂直距离选择各驱动电极对应的驱动电压。
根据本发明的一个实施例，根据所述垂直距离选择各驱动电极对应的驱动电压进一步包括：
根据所述垂直距离与各驱动电极的驱动电压的对应关系数据，选择各驱动电极对应的驱动电压，其中，所述对应关系数据使得液晶棱镜的形状关于显示面板 在纵向方向的中心轴保持对称。
本发明的有益效果：
本发明通过改变液晶棱镜的形状，实现最佳观看距离的调整，使得任意观看距离均能成为最佳观看距离，从而改善裸眼3D显示器的观看体验。
本发明的其他优点、目标，和特征在某种程度上将在随后的说明书中进行阐述，并且在某种程度上，基于对下文的考察研究对本领域技术人员而言将是显而易见的，或者可以从本发明的实践中得到教导。本发明的目标和其他优点可以通过下面的说明书，权利要求书，以及附图中所特别指出的结构来实现和获得。
附图说明
附图用来提供对本申请的技术方案或现有技术的进一步理解，并且构成说明书的一部分。其中，表达本申请实施例的附图与本申请的实施例一起用于解释本申请的技术方案，但并不构成对本申请技术方案的限制。
图1是现有技术中一种裸眼3D液晶棱镜最佳观看距离和观看区域示意图；
图2是根据本发明的一个实施例的用于驱动裸眼3D液晶棱镜的系统结构示意图；
图3是现有技术中一种液晶棱镜及其驱动电极结构示意图；
图4是根据本发明的一个实施例的液晶棱镜驱动电压、驱动电极设定示意图；
图5是根据本发明的另一个实施例的液晶棱镜驱动电压、驱动电极设定示意图。
图6是根据本发明的一个实施例的用于驱动裸眼3D液晶棱镜的方法流程图。
具体实施方式
以下将结合附图及实施例来详细说明本发明的实施方式，借此对本发明如何应用技术手段来解决技术问题，并达成相应技术效果的实现过程能充分理解并据以实施。本申请实施例以及实施例中的各个特征，在不相冲突前提下可以相互结合，所形成的技术方案均在本发明的保护范围之内。
本发明提供了一种用于驱动裸眼3D液晶棱镜的系统和方法，通过调整液晶棱镜的形状，而不是人的左右眼视图显示数据，从而实现最佳观看距离的调 整，改善裸眼3D显示器的观看体验。
如图2所示为根据本发明的一个实施例的用于驱动裸眼3D液晶棱镜的系统结构示意图，以下参考图2来对本发明进行详细说明。
如图2所示，该用于驱动裸眼3D液晶棱镜的系统包括驱动电压确定模块11和液晶棱镜驱动模块12。其中，驱动电压确定模块11用于根据人眼空间位置信息，确定显示面板中各驱动电极对应的驱动电压。液晶棱镜驱动模块12用于根据驱动电压生成驱动对应驱动电极的驱动信号，以对液晶棱镜的形状进行调整。在本发明中，基于人眼空间位置信息来调整用于驱动液晶棱镜的驱动电极的电压，进而调整液晶棱镜的形状，使得液晶棱镜的形状随人眼空间位置信息的变化而变化，可以改善裸眼3D显示器的观看体验。
如图2所示，在本发明的一个实施例中，驱动电压确定模块进一步包括距离计算单元111和驱动电极电压选择单元112。其中，距离计算单元111用于根据人眼空间位置信息计算人眼与显示面板之间的垂直距离。驱动电极电压选择单元112用于根据垂直距离选择各驱动电极对应的驱动电压。
在本发明的一个实施例中，该驱动电压确定模块11还包括显示查找表113，其用于存储垂直距离与各驱动电极对应的驱动电压的对应关系数据。也就是说，该查找表113中存储有人眼与显示面板之间的不同垂直距离的数据以及不同垂直距离条件下各个电极的驱动电压。具体的，如图3所示为现有显示器中一种液晶棱镜及其两侧的驱动电极结构示意图，液晶棱镜41的阳极侧设置有多个阳极驱动电极42，如电极1、电极2、电极3、电极4和电极5，阴极侧设置有一个阴极驱动电极43，R表示右眼图像数据，L表示左眼图像数据。通过向多个阳极驱动电极42和阴极驱动电极43施加不同的驱动电压，可以使得液晶棱镜41具有不同的形状，从而具有不同的曲率，进而实现在不同的观看距离下均能达到最佳观看效果。
优选地，该对应关系数据使得液晶棱镜的形状关于显示面板在纵向方向的中心轴保持对称。具体的，如表1所示。
向图3中的五个阳极驱动电极施加不同的驱动电压，并且使得施加的驱动电压的数值基于显示面板中央垂直方向(电极3处)保持对称。由于阴极驱动电极43为一面状电极，其整体为一个电位，因此，可不必施加不同的驱动电压。当然，对于阴极驱动电极43也为类似阳极驱动电极42的多个驱动电极结构时，也可以向阴极驱动电极43的各个驱动电极施加不同的驱动电压，本发明不限于 此。
表1
Figure PCTCN2017097037-appb-000001
在该驱动系统工作时，当人眼识别模块监测到人眼距显示面板距离为3m时，选择显示查找表(表1)中第5行的各电压作为对应驱动电极的驱动电压，如图4所示。当人眼识别模块监测到人眼距显示面板距离为2m时，选择显示查找表(表1)中第3行的各电压作为对应驱动电极的驱动电压，如图5所示。这样，就可以根据人眼位置调整液晶棱镜的形状，改善裸眼3D的观看效果。
在本发明的一个实施例中，该系统还包括人眼识别模块13，其用于获取人眼空间位置信息。具体的，人眼空间位置信息包括观看显示屏幕的人的双眼中点坐标和双眼瞳距。可以通过设置于显示器上的人眼识别模块拍摄面向屏幕观看区域的人脸图像，识别人脸图像中的双眼通孔坐标，进而得到双眼中点坐标和双眼瞳距。双眼中点坐标为双眼瞳孔坐标的连线中点的坐标，双眼瞳距为双眼瞳孔坐标间的距离。优选地，间隔预定时间，周期性获取人脸图像的双眼中点坐标和双眼瞳距。
在获取到人脸图像的双眼中点坐标和双眼瞳距后，距离计算单元111根据预设算法计算得到双眼中点坐标与显示面板之间的垂直距离。例如，可采用现有标定算法(如张正友标定发)得到双眼中点坐标与显示面板之间的垂直距离的关系曲线，基于该关系曲线，计算双眼中点坐标与显示面板之间的垂直距离。当然，也可以其他方法计算双眼中点坐标与显示面板之间的垂直距离，本发明不限于此。
驱动电极电压选择单元112可以根据距离计算单元111计算得到的垂直距离选择各驱动电极对应的驱动电压。也就是说，对应于不同的垂直距离，驱动电极电压选择单元112选择不同的驱动电压，不同的驱动电压使得液晶棱镜具有不同的形状。不同形状的液晶棱镜具有不同的曲率，不同的曲率对应不同的最佳观看距离。因此，通过调整液晶棱镜的形状，可以使得在任意距离均能达到最佳观看 效果，任意距离均是最佳观看距离。
根据本发明的一个实施例，该驱动电压确定模块11还包括人眼侦测结果接收单元114，其用于接收人眼空间位置信息。
根据本发明的一个实施例，该驱动电压确定模块11还包括信号输出单元115，其用于将驱动电压信号输出至液晶棱镜驱动模块12。液晶棱镜驱动模块12根据该驱动电压信号生成对应的驱动信号并输送至对应的驱动电极。
根据本发明的另一个方面，还提供了一种用于驱动裸眼3D液晶棱镜的方法，如图6所示，该方法具体包括以下几个步骤。
首先，在步骤S110中，根据人眼空间位置信息，确定显示面板中各驱动电极对应的驱动电压。具体的，驱动电压确定模块11根据人眼空间位置信息计算人眼与显示面板之间的垂直距离，然后根据垂直距离选择各驱动电极对应的驱动电压。根据垂直距离选择各驱动电极对应的驱动电压进一步根据垂直距离与各驱动电极的驱动电压的对应关系数据，选择各驱动电极对应的驱动电压，其中，对应关系数据使得液晶棱镜的形状关于显示面板在纵向方向的中心轴保持对称。
在步骤S120中，根据驱动电压生成驱动对应驱动电极的驱动信号，以对液晶棱镜的形状进行调整。具体的，液晶棱镜驱动模块12根据驱动电压生成驱动对应驱动电极的驱动信号，以对液晶棱镜的形状进行调整。
虽然本发明所公开的实施方式如上，但所述的内容只是为了便于理解本发明而采用的实施方式，并非用以限定本发明。任何本发明所属技术领域内的技术人员，在不脱离本发明所公开的精神和范围的前提下，可以在实施的形式上及细节上作任何的修改与变化，但本发明的专利保护范围，仍须以所附的权利要求书所界定的范围为准。

Claims (16)

  1. 一种用于驱动裸眼3D液晶棱镜的系统，包括：
    驱动电压确定模块，其用于根据人眼空间位置信息，确定显示面板中各驱动电极对应的驱动电压；
    液晶棱镜驱动模块，其用于根据所述驱动电压生成驱动对应驱动电极的驱动信号，以对所述液晶棱镜的形状进行调整。
  2. 根据权利要求1所述的系统，其中，所述驱动电压确定模块进一步包括：
    距离计算单元，其用于根据所述人眼空间位置信息计算人眼与显示面板之间的垂直距离；
    驱动电极电压选择单元，其用于根据所述垂直距离选择各驱动电极对应的驱动电压。
  3. 根据权利要求2所述的系统，其中，所述驱动电压确定模块还包括显示查找表，其用于存储所述垂直距离与各驱动电极对应的驱动电压的对应关系数据。
  4. 根据权利要求3所述的系统，其中，所述对应关系数据使得液晶棱镜的形状关于显示面板在纵向方向的中心轴保持对称。
  5. 根据权利要求1所述的系统，其中，所述驱动电压确定模块还包括人眼侦测结果接收单元，其用于接收所述人眼空间位置信息。
  6. 根据权利要求2所述的系统，其中，所述驱动电压确定模块还包括人眼侦测结果接收单元，其用于接收所述人眼空间位置信息。
  7. 根据权利要求3所述的系统，其中，所述驱动电压确定模块还包括人眼侦测结果接收单元，其用于接收所述人眼空间位置信息。
  8. 根据权利要求4所述的系统，其中，所述驱动电压确定模块还包括人眼侦测结果接收单元，其用于接收所述人眼空间位置信息。
  9. 根据权利要求5所述的系统，其中，所述驱动电压确定模块还包括信号输出单元，其用于将各驱动电压输出至所述液晶棱镜驱动模块。
  10. 根据权利要求6所述的系统，其中，所述驱动电压确定模块还包括信号输出单元，其用于将各驱动电压输出至所述液晶棱镜驱动模块。
  11. 根据权利要求7所述的系统，其中，所述驱动电压确定模块还包括信号输出单元，其用于将各驱动电压输出至所述液晶棱镜驱动模块。
  12. 根据权利要求8所述的系统，其中，所述驱动电压确定模块还包括信号 输出单元，其用于将各驱动电压输出至所述液晶棱镜驱动模块。
  13. 根据权利要求1所述的系统，其中，还包括人眼识别模块，其用于获取所述人眼空间位置信息。
  14. 一种用于驱动裸眼3D液晶棱镜的方法，包括：
    根据人眼空间位置信息，确定显示面板中各驱动电极对应的驱动电压；
    根据所述驱动电压生成驱动对应驱动电极的驱动信号，以对液晶棱镜的形状进行调整。
  15. 根据权利要求14所述的方法，其中，根据人眼空间位置信息，确定显示面板中各驱动电极对应的驱动电压进一步包括：
    根据所述人眼空间位置信息计算人眼与显示面板之间的垂直距离；
    根据所述垂直距离选择各驱动电极对应的驱动电压。
  16. 根据权利要求15所述的方法，其中，根据所述垂直距离选择各驱动电极对应的驱动电压进一步包括：
    根据所述垂直距离与各驱动电极的驱动电压的对应关系数据，选择各驱动电极对应的驱动电压，其中，所述对应关系数据使得液晶棱镜的形状关于显示面板在纵向方向的中心轴保持对称。
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