CN102449539A - Liquid chrystal display device with focusing arrangement - Google Patents

Liquid chrystal display device with focusing arrangement Download PDF

Info

Publication number
CN102449539A
CN102449539A CN2010800233938A CN201080023393A CN102449539A CN 102449539 A CN102449539 A CN 102449539A CN 2010800233938 A CN2010800233938 A CN 2010800233938A CN 201080023393 A CN201080023393 A CN 201080023393A CN 102449539 A CN102449539 A CN 102449539A
Authority
CN
China
Prior art keywords
lens element
pixel
lens
display
different
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN2010800233938A
Other languages
Chinese (zh)
Inventor
J.范德霍斯特
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Koninklijke Philips NV
Original Assignee
Koninklijke Philips Electronics NV
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Koninklijke Philips Electronics NV filed Critical Koninklijke Philips Electronics NV
Publication of CN102449539A publication Critical patent/CN102449539A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • 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
    • 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
    • G02F1/133526—Lenses, e.g. microlenses or Fresnel lenses
    • 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
    • G02F1/133371—Cells with varying thickness of the liquid crystal layer
    • 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

Abstract

A display device comprises a liquid crystal display panel (3) and a lens arrangement (9) provided over the display panel. The thickness of the liquid crystal display layer (32) is greater at a position corresponding to a centre of a lens element (11) than at a position corresponding to an edge of the lens element. This improves the uniformity of the display effect for different viewing angles.

Description

Liquid crystal display with focus arrangement
Technical field
The present invention relates to display device, wherein focus arrangement provides the orientation of the light of the pixel that is derived from display panel.
Background technology
Concentrating element is used in known output at display, thereby control is used for the scope at the possible visual angle of display.
If on single pixel, lens are provided, then enlarging function can be provided.If on a plurality of pixels, lens are provided, then can be with showing that output is directed to the different spaces place from different pixels.This is the mode of automatic stereoscopic display device operation.
The known embodiment of the focus arrangement of in automatic stereoscopic display device, using is to extend parallel to each other and be arranged in the array of the elongated biconvex element above the array of display pixels.See through these biconvex elements and observe display pixel.
The biconvex element is provided as sheet of elements, and each sheet of elements comprises elongated semicylindrical lens element.Lenticular lens element (" light barrier (lenicules) ") is extended in the column direction of display panel, and each biconvex arrangements of elements is on the respective sets of two or more adjacent columns of display pixel.
In for example each light barrier layout relevant with two row display pixels, the display pixel in each row provides the terrace cut slice of respective two dimensional sub-image.The biconvex sheet is directed to the user's who is positioned at biconvex sheet the place ahead left eye and right eye with these two sections and the respective slice that is derived from the columns of display pixels relevant with other light barriers, makes the user observe single stereo-picture.Lenticular lens element sheet thereby light output directional function is provided.
In other were arranged, in each light barrier and the line direction one group 4 or more heterogeneous adjacent display pixel were relevant.The respective column of the display pixel in each group is suitably arranged the terrace cut slice that comes from respective two dimensional sub-image to provide.When user's head moves from left to right, aware a series of continuous different three-dimensional views, for example produce the impression of looking around (look-around).
Use the problem of focus arrangement to be that difference watches the place corresponding to the light path that focuses on different display panel areas, and especially, the different light propagation angle degree of the LC layer through display panel.These different light propagation angle degree provide different paths, and therefore, provide the optical modulation (that is phase change) through the varying number of LC material.Thereby because accurately propagate through the correct distance of LC material from the visible light in front, LCD works in the front well.Watch from other angles, then performance degradation.
Summary of the invention
The objective of the invention is to reduce the influence of the problems referred to above.
The present invention is limited independent claims.Dependent claims defines advantageous embodiment.
According to the present invention, a kind of display device is provided, comprising:
Display panels has the array of the display pixel element that is used to produce demonstration and comprises liquid crystal display layer; And
Lens layout is provided on the display panel and comprises lens element, and this lens element provides from difference and watches the focusing of place to the zones of different of lens element below,
Wherein the thickness of this liquid crystal display layer corresponding to the thickness of lens element center greater than at thickness corresponding to the lens element marginal position.
The optical modulation effect that this layout makes liquid crystal layer provide is more even for different visual angles.
Display panel can comprise the liquid crystal display layer between the transparency electrode, and one of them electrode forming is for limiting inhomogeneous electrode gap.Unevenly spaced thereby can be the result who revises manufacturing process.
The minimum dimension of each lens element can be corresponding to the size of single black and white pixel or single color sub-pixel.This means that the output from each pixel or sub-pixel is controlled to improve the homogeneity from different view directions.
Alternatively, the minimum dimension of each lens element can be corresponding to the size of one group of black and white pixel or one group of color sub-pixel.By this way, different pixels or sub-pixel are imaged onto different places, space, make different images be provided to the different location, are used for the optical modulation attribute more uniformly that difference is watched the place but have.
In each situation, each lens element can comprise that wherein minimum dimension is the biconvex lens of width.
Display device can comprise automatic stereoscopic display device, wherein lens layout will from the output directional of different pixels or sub-pixel to different spatial so that stereo-picture can be watched.
Description of drawings
Referring now to accompanying drawing embodiments of the invention are described by way of example purely, in the accompanying drawing:
Fig. 1 is the perspective schematic view of known automatic stereoscopic display device;
Fig. 2 illustrates the biconvex array and how to the different spaces place different views to be provided;
Fig. 3 illustrates first instance according to display device of the present invention; And
Fig. 4 illustrates second instance according to display device of the present invention.
Embodiment
The present invention provides a kind of liquid crystal display, and lens layout wherein is provided on display panel.The thickness of liquid crystal display layer corresponding to the thickness of lens element center greater than at thickness corresponding to the lens element marginal position.This means can be basic identical through the optical path length of liquid crystal layer for different view directions, perhaps can be chosen as from these different view directions identical modulation effect is provided.
The present invention cherishes a special interest for auto-stereoscopic display device.
Fig. 1 is the perspective schematic view of the auto-stereoscopic display device 1 of known direct viewing.Known device 1 comprises that the display panels 3 as the active array type of spatial light modulator shows to produce.
Display panel 3 has the orthogonal array of the display pixel of arranging with row and column 5.For clarity sake, small number of display pixels 5 only is shown among the figure.In fact, display panel 3 can comprise the display pixel 5 of about 100 row and several thousand row.
The structure of display panels 3 is completely normal.Especially, panel 3 comprises a pair of transparent glass substrate that separates, and directed twisted-nematic (aligned twisted nematic) or other liquid crystal materials are provided therebetween.Substrate carries the pattern of transparent indium tin oxide (ITO) electrode on its lining face (facing surface).Also on the outside surface of substrate, polarization layer is provided.
Each display pixel 5 comprises the comparative electrode on the substrate, has liquid crystal material between two parties therebetween.The shape of display pixel 5 and layout are by the shape and the layout decision of electrode.Display pixel 5 separates each other through the gap regularly.
Each display pixel 5 is associated with on-off element such as thin film transistor (TFT) (TFT) or thin film diode (TFD).Display pixel is operating as through providing address signal to produce demonstration to on-off element, and suitable addressing scheme is known to those skilled in the art.
Display panel 3 is by light source 7 irradiations, and in this case, light source 7 is included in the planar backlight of extending on the zone of array of display pixels.Light from light source 7 is directed through display panel 3, and each display pixel 5 is actuated to light modulated and produces show.
Display device 1 also comprises carries out the biconvex sheet 9 that view forms function on the display surface that is arranged in display panel 3.Biconvex sheet 9 comprises the delegation's biconvex element 11 that extends parallel to each other, and for clarity sake, only with up-sizing one of them is shown.
Biconvex element 11 is forms of convex cylindrical lenses, and they are used as light output directional device to the user's who is positioned at display device 1 the place ahead eyes pictures different or view to be provided from display panel 3.
Auto-stereoscopic display device 1 shown in Fig. 1 can provide some different skeleton views in different directions.Especially, each biconvex element 11 is arranged in above the group's display pixel 5 in each row.Each display pixel 5 biconvex element 11 throws one group in different directions in, thus some different views formed.When user's head moves from left to right, his/her eye will receive the different views in some views successively.
Fig. 2 illustrates the principle of work that the imaging of aforesaid biconvex type arranges and backlight 20, LCD display device 24 is shown and biconvex array 28.Fig. 2 illustrates biconvex and arranges how 58 arrive the different spaces place with the different pixels output directional.
Fig. 3 illustrates first instance of display device of the present invention from the top view of single LCD (son) pixel.
Display panel 3 comprises bottom electrode 3, LC layer 32 and top electrode 34.Electrode is transparent, is for example formed by ITO and on the corresponding glass substrate, provides.Fig. 3 also illustrates color filter 36 and black masks layer 38.In this example lens 11 have corresponding to shown in the width of single Pixel Dimensions.Single pixel is monochromatic sub-pixel, but in the black and white instance, pixel will be single complete pixel.
Like top explanation, lens element 11 provides from difference and watches the focusing of place to the zones of different of lens element below.Show and two light paths that view direction is relevant.Thick line is represented the light path perpendicular to the viewing location of display, and focuses on the centre of pixel.Dotted line is represented towards the light path of the viewing location of a side of display, and focuses on the edge of pixel.
The thickness of liquid crystal display layer corresponding to the thickness of lens element center greater than at thickness corresponding to the lens element marginal position.The length that this means light path can be done equally.
In the instance shown in Fig. 3, especially the uneven bottom electrode 30 of the profile (profile) through having lifting is on the edge of realized different intervals.
Uneven electrode can use the shaping paper tinsel of depositing electrode on it to form.The production of 3D lens paper tinsel becomes more simply and is more cheap.The show electrode that the paper tinsel of these types can also be used to shaping is provided is to provide required non-uniform spacing.Thereby the technology that is used for 3D biconvex paper tinsel can be used for 2D of the present invention and realize that (Fig. 3) or 3D realize (Fig. 4).
Alternatively, the electrode of shaping can form through the deposition of revising electrode layer, makes it have different thickness in different places.This can realize through a plurality of deposition steps of ITO electrode, perhaps realizes to produce the expectation profile through deposition thicker ITO electrode and application photoetching composition.The light curable material that has through composition exposure also can be used to form different thickness.The standard technique that is used for establishment uneven surface on smooth bottom substrate is routine techniques to those skilled in the art fully.
Lens can be right cylinders, that is, the form of biconvex lens makes to obtain the homogeneous angular performance to different horizontal viewing location.Certainly, sphere (or similar) lens can be used to provide different homogeneitys of laterally and vertically watching the improvement in place.
As in Fig. 3, schematically finding out, for given view direction, lens element focuses on quite wide zone with light path.This light cone that is used for each view direction can be not more than the lens of color filter 36 and/or increase lens distance and reduce (making the angle of divergence of light path reduce) through use.Yet the lens distance of increase will cause the angular field of view that reduces.Thereby lens arrangement can not be installed on the LCD panel too high to avoid pixel visible under adjacent lens (that is, see through lens and watch wrong pixel).
As stated, the present invention is especially interesting for automatic stereoscopic display device equipment, and Fig. 4 schematically shows this and can how to realize.
Use with Fig. 3 in identical reference number.Yet 4 subpixels are arranged in lens 11 belows, have 4 color filters that are shown 36a-36d.
In this case, the minimum dimension of each lens element is corresponding to the width of 4 color sub-pixel groups.Lens element 11 comprises biconvex lens equally.
The present invention can be applicable to a lot of different LCD designs.For example, it can be applied to have the flexible LCD of plastic and more conventional glass substrate.In this case, all LCD pile up can be crooked.
Can the utilization structure bottom electrode (as shown in) or structuring top electrode realize that non-uniform cell at interval.Can select to be shaped makes path basic identical.Yet for the different propagation angle through lc unit, Polarization Modulation is also with difference, so the overall goals of creating even optical modulation effect in different angles maybe and not mean that fixed route length.But, can use more complicated profile.
The present invention can form superelevation visual angle display, and it has the picture quality of improvement in precipitous angle.This is the principal benefits for 2D and 3D display.
Through research accompanying drawing, instructions and accompanying claims, those skilled in the art are appreciated that and realize other distortion of the disclosed embodiments when putting into practice invention required for protection.In claim, word " comprises " does not get rid of other element or step, and indefinite article " " or " one " do not get rid of a plurality of.In mutually different dependent claims, put down in writing this pure true combination of not representing advantageously to use these measures of some measure.Any reference symbol in the claim should not be read as the scope of having limited.

Claims (7)

1. display device comprises:
Display panels (3) has the array of the display pixel element (5) that is used to produce demonstration and comprises liquid crystal display layer (32); And
Lens layout (9) is provided on the display panel and comprises lens element (11), and this lens element provides from difference and watches the focusing of place to the zones of different of lens element (11) below,
Wherein the thickness of this liquid crystal display layer (32) corresponding to the thickness of lens element (11) center greater than at thickness corresponding to the lens element marginal position.
2. equipment according to claim 1, wherein display panel comprises the liquid crystal display layer (32) between the transparency electrode (30,34), wherein one of electrode (30) is configured as and limits inhomogeneous electrode gap.
3. equipment according to claim 1, wherein the minimum dimension of each lens element (11) is corresponding to the size of single black and white pixel or single color sub-pixel.
4. equipment according to claim 3, wherein each lens element (11) comprises that wherein minimum dimension is the biconvex lens of width.
5. equipment according to claim 1, wherein the minimum dimension of each lens element (11) is corresponding to the size of one group of black and white pixel or one group of color sub-pixel.
6. equipment according to claim 5, wherein each lens element (11) comprises that wherein minimum dimension is the biconvex lens of width.
7. equipment according to claim 5 comprises automatic stereoscopic display device, wherein lens layout (9) will from the output directional of different pixels or sub-pixel to different spatial so that stereo-picture watched.
CN2010800233938A 2009-05-28 2010-05-21 Liquid chrystal display device with focusing arrangement Pending CN102449539A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP09161339.8 2009-05-28
EP09161339 2009-05-28
PCT/IB2010/052268 WO2010136944A1 (en) 2009-05-28 2010-05-21 Liquid chrystal display device with focusing arrangement

Publications (1)

Publication Number Publication Date
CN102449539A true CN102449539A (en) 2012-05-09

Family

ID=42331015

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2010800233938A Pending CN102449539A (en) 2009-05-28 2010-05-21 Liquid chrystal display device with focusing arrangement

Country Status (8)

Country Link
EP (1) EP2435877A1 (en)
JP (1) JP2012528348A (en)
KR (1) KR20120027394A (en)
CN (1) CN102449539A (en)
BR (1) BRPI1008205A2 (en)
RU (1) RU2011153669A (en)
TW (1) TW201107836A (en)
WO (1) WO2010136944A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103918257A (en) * 2011-11-09 2014-07-09 皇家飞利浦有限公司 Display device and method
CN109164655A (en) * 2018-09-28 2019-01-08 合肥鑫晟光电科技有限公司 Array substrate, display device and its preparation and driving method, base plate preparation method

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2398130A (en) * 2003-02-05 2004-08-11 Ocuity Ltd Switchable active lens for display apparatus
GB2405518A (en) * 2003-08-30 2005-03-02 Sharp Kk Multiple view display
GB0323283D0 (en) * 2003-10-04 2003-11-05 Koninkl Philips Electronics Nv Optimising brightness control in a 3D image display device
KR101350475B1 (en) * 2007-04-12 2014-01-15 삼성전자주식회사 Highly efficient 2D/3D switchable display device
EP2140304B1 (en) * 2007-04-17 2011-08-31 Koninklijke Philips Electronics N.V. Beam-shaping device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103918257A (en) * 2011-11-09 2014-07-09 皇家飞利浦有限公司 Display device and method
CN109164655A (en) * 2018-09-28 2019-01-08 合肥鑫晟光电科技有限公司 Array substrate, display device and its preparation and driving method, base plate preparation method

Also Published As

Publication number Publication date
TW201107836A (en) 2011-03-01
EP2435877A1 (en) 2012-04-04
KR20120027394A (en) 2012-03-21
WO2010136944A1 (en) 2010-12-02
JP2012528348A (en) 2012-11-12
RU2011153669A (en) 2013-07-10
BRPI1008205A2 (en) 2019-09-24

Similar Documents

Publication Publication Date Title
US8436953B2 (en) Stereoscopic display
TWI472802B (en) Display device
US8462280B2 (en) Liquid crystal lens electrically driven and stereoscopic display device thereof
TWI434067B (en) Stereo display device and lens array thereof
CN101836460B (en) Auto-stereoscopic display device
US9313480B2 (en) Display device in which multiple images are displayed using four neighboring pixels, display panel and electronic apparatus using same
US20140111854A1 (en) Autostereoscopic display apparatus having optical magnification
KR101753570B1 (en) Autostereoscopic display device
KR20140115487A (en) Stereoscopic image display device of non glasses type
US20150362741A1 (en) Stereoscopic image display apparatus
CN103513311B (en) A kind of 3 D grating and bore hole 3D display device
JPWO2014196125A1 (en) Image display device and liquid crystal lens
US20140152925A1 (en) Liquid crystal lens module and 3d display device
KR102171611B1 (en) Stereopsis image display device
CN102944961A (en) Naked-eye three-dimensional display and liquid crystal lens thereof
US9807376B2 (en) Stereopsis display device
JP6010375B2 (en) Display device
US10021375B2 (en) Display device and method of driving the same
JP2009115920A (en) Display device
CN103389597A (en) Liquid crystal display with misplaced pixels
US9759925B2 (en) Three-dimensional image display apparatus
CN101341762B (en) Autostereoscopic display device
KR20120095035A (en) Stereoscopic image display device
KR20180081780A (en) Display device and display control method
US9606367B2 (en) Stereoscopic display device

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C02 Deemed withdrawal of patent application after publication (patent law 2001)
WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20120509