CN205722621U - A kind of display device - Google Patents

A kind of display device Download PDF

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Publication number
CN205722621U
CN205722621U CN201620642344.7U CN201620642344U CN205722621U CN 205722621 U CN205722621 U CN 205722621U CN 201620642344 U CN201620642344 U CN 201620642344U CN 205722621 U CN205722621 U CN 205722621U
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China
Prior art keywords
grating
display device
pixel
region
light
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CN201620642344.7U
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Chinese (zh)
Inventor
王维
杨亚锋
陈小川
王倩
谭纪风
高健
马新利
张粲
王灿
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BOE Technology Group Co Ltd
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BOE Technology Group Co Ltd
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Abstract

The open a kind of display device of this utility model, relates to Display Technique field, for improving the viewing experience of beholder.Described display device includes: display floater, and is arranged on the inside of display floater or the grating layer of the outside of display floater；The direction of the non-line-of-sight concentration zones of display device is pointed at center along the sight line concentration zones of display device, the screen periods of grating layer is gradually reduced, after there is diffraction in being incident to the region that the incident illumination of grating layer is corresponding with the non-line-of-sight concentration zones of display device at grating layer, it is thus achieved that the light of non-zero order diffraction fall into the sight line of beholder.The screen periods of grating layer is gradually reduced along the direction of the sensing non-line-of-sight concentration zones, center of sight line concentration zones, the light of the non-zero order diffraction obtained after there is diffraction in the region that incident illumination is corresponding with the non-line-of-sight concentration zones of display device at grating layer falls into the sight line of beholder, increase is sent, falls into amount of light and the intensity of the light in the sight line of beholder by non-line-of-sight concentration zones, improves the viewing experience of beholder.

Description

A kind of display device
Technical field
This utility model relates to Display Technique field, particularly relates to a kind of display device.
Background technology
Display device is a kind of for showing word, numeral, symbol, picture, or by word, numeral, symbol and picture The device of the pictures such as the image that the combination of middle at least two is formed.Display device can be flat display apparatus, curved-surface display device, 3D display device, nearly eye display device, AR/VR display device etc..
Currently for existing a kind of display device, display device is generally of fixing concentration zones, visual field and non-visual field Concentration zones, when the picture shown by display device is watched in beholder viewing area in front of a display device, the sight line collection of beholder In in concentration zones, visual field, owing to the light direction of the regional of display device is the most identical, therefore, send out concentration zones, visual field The amount of light of the light going out, falling into the sight line of beholder is more and intensity is relatively strong, and is sent by concentration zones, non-visual field, fallen into viewing The amount of light of the light of the sight line of person is less and intensity is more weak, in the picture that beholder is seen, corresponding to concentration zones, visual field The brightness in region is higher than the brightness in the region corresponding to concentration zones, non-visual field, the i.e. brightness uniformity of the picture that beholder is watched Property is poor, thus brings bad viewing experience to beholder.
Utility model content
The purpose of this utility model is to provide a kind of display device, for improving the viewing experience of beholder.
To achieve these goals, the following technical scheme of this utility model offer:
A kind of display device, including: display floater, and it is arranged on the inside of described display floater or described display floater The grating layer of outside；
The direction of the non-line-of-sight concentration zones of described display device is pointed at center along the sight line concentration zones of described display device, The screen periods of described grating layer is gradually reduced, and is incident to the incident illumination of described grating layer at described grating layer and described display dress After there is diffraction in the region that the non-line-of-sight concentration zones put is corresponding, it is thus achieved that the light of non-zero order diffraction fall into the sight line of beholder.
The display device that this utility model provides is provided with grating layer, and is referred to by the center of the sight line concentration zones of display device To the direction of the non-line-of-sight concentration zones of display device, the screen periods of grating layer is gradually reduced, thus by sight line concentration zones The heart points to the direction of non-line-of-sight concentration zones, is incident to the non-zero level that the incident illumination of grating layer obtains after grating layer generation diffraction and spreads out The angle of diffraction penetrated is gradually increased, after there is diffraction in the region that incident illumination is corresponding with non-line-of-sight concentration zones at grating layer, it is thus achieved that Non-zero order diffraction is towards the sight line deviation of beholder so that send out in the region that incident illumination is corresponding with non-line-of-sight concentration zones at grating layer Gain interest after penetrating, it is thus achieved that the light of non-zero order diffraction fall into the sight line of beholder.It is thus possible to increase by the non-line-of-sight of display device Concentration zones sends, falls into amount of light and the intensity of the light in the sight line of beholder, makes by the non-line-of-sight concentration zones of display device Send, fall into the amount of light of the light in the sight line of beholder and sent by the sight line concentration zones of display device, fallen into beholder Sight line in the amount of light of light match, sent by the non-line-of-sight concentration zones of display device, fallen in the sight line of beholder The intensity of light match with the intensity of the light in the sight line being sent, being fallen into beholder by the sight line concentration zones of display device, subtract The picture that little beholder is watched corresponds respectively to the luminance difference between the region of sight line concentration zones and non-line-of-sight concentration zones, from And improve the brightness uniformity of the picture that beholder is watched, and then improve the viewing experience of beholder, bring to beholder Truer, comfortable viewing experience.
Accompanying drawing explanation
Accompanying drawing described herein is used for providing being further appreciated by of the present utility model, constitutes one of the present utility model Point, schematic description and description of the present utility model is used for explaining this utility model, is not intended that of the present utility model Improper restriction.In the accompanying drawings:
Fig. 1 is the location diagram of a kind of display device and beholder；
Fig. 2 is the floor map of display device in Fig. 1；
The sectional view of a kind of display device that Fig. 3 provides for this utility model embodiment；
The sectional view of the another kind of display device that Fig. 4 provides for this utility model embodiment；
Fig. 5 is the curve chart of the angle of diffraction of various location 1 order diffraction of display device；
The pixel arrangement mode one of the display device that Fig. 6 provides for this utility model embodiment；
Fig. 7 is the structural representation of a kind of grating layer being applied in the display device in Fig. 6；
Fig. 8 is the curve chart of the screen periods of grating layer in Fig. 7；
Fig. 9 is the graph of a relation of the light extraction efficiency of 1 order diffraction and screen periods in non-line-of-sight concentration zones；
Figure 10 is the graph of a relation of the light extraction efficiency of 0 order diffraction and screen periods in non-line-of-sight concentration zones；
The pixel arrangement mode two of the display device that Figure 11 provides for this utility model embodiment；
Figure 12 is the structural representation of a kind of grating layer being applied in the display device in Figure 11；
Figure 13 is the curve chart of the screen periods of grating layer in Figure 12；
The pixel arrangement mode three of the display device that Figure 14 provides for this utility model embodiment；
Figure 15 is the structural representation of a kind of grating layer being applied in the display device in Figure 14；
Figure 16 is the light extraction efficiency thickness relationship figure with grating projection of 0 order diffraction；
Figure 17 is the light extraction efficiency thickness relationship figure with grating projection of 1 order diffraction；
Figure 18 is the light extraction efficiency graph of a relation with grating dutycycle of 0 order diffraction；
Figure 19 is the light extraction efficiency graph of a relation with grating dutycycle of 1 order diffraction；
Figure 20 is the schematic cross-section one that grating is protruding；
Figure 21 is the schematic cross-section two that grating is protruding；
Figure 22 is the schematic cross-section three that grating is protruding；
Figure 23 is the schematic cross-section four that grating is protruding；
Figure 24 is the schematic cross-section five that grating is protruding；
Figure 25 is the schematic cross-section six that grating is protruding.
Reference:
10-display device, 20-display floater,
21-first substrate, 22-second substrate,
23-coloured silk film layer, 24-R pixel,
25-G pixel, 26-B pixel,
30-grating layer, 31-grating is protruding,
32-gap, 33-R grating region,
34-G grating region, 35-B grating region,
40-light-diffusing films.
Detailed description of the invention
In order to further illustrate the display device that this utility model embodiment provides, carry out in detail below in conjunction with Figure of description Thin description.
Referring to Fig. 1 to Fig. 3, the display device 10 that this utility model embodiment provides includes: display floater 20, Yi Jishe Put the grating layer 30 in the inside of display floater 20 or the outside of display floater 20；Sight line concentration zones A along display device 10 Center a points to the direction of the non-line-of-sight concentration zones B of display device 10, and the screen periods of grating layer 30 is gradually reduced, and is incident to light Obtain after there is diffraction in the region that the incident illumination of gate layer 30 is corresponding with the non-line-of-sight concentration zones B of display device 10 at grating layer 30 The light of non-zero order diffraction towards the sight line deviation of beholder Z.
It is worthy of note, the display device 10 that this utility model embodiment provides can be flat display apparatus, curved surface Display device, 3D display device, nearly eye display device, AR/VR display device etc., in this utility model embodiment, with display Device 10 is described in detail for as a example by flat display apparatus.
For example, referring to Fig. 1 and Fig. 2, the display device 10 that this utility model embodiment provides is plane display dress Putting, have viewing area before flat display apparatus, display device 10 includes sight line concentration zones A and non-line-of-sight concentration zones B；Beholder Z Viewing picture shown by display device 10 in viewing area, the sight line of beholder Z concentrates on sight line concentration zones A, display fills The intensity of light putting the sight line that the sight line concentration zones A of 10 sent, fell into beholder is concentrated more than by the non-line-of-sight of display device 10 District B sends, falls into the intensity of the light of the sight line of beholder.
Referring to Fig. 3, display device 10 includes display floater 20 and grating layer 30, and display floater 20 can be liquid crystal display Panel or OLED (Organic Light-Emitting Diode, Organic Light Emitting Diode) display floater, PDP display floater (Plasma Display Panel, plasma panel), CRT (Cathode Ray Tube, cathode ray tube) display floater Deng, grating layer 30 is arranged on inside or the outside of display floater 20 of display floater 20, and such as, display device 10 is liquid crystal display Device, display device 10 includes backlight and the display floater 20 of the light emission side being positioned at backlight, and display floater 20 includes relatively The first substrate 21 arranged and second substrate 22, grating layer 30 can be arranged between first substrate 21 and second substrate 22, or Person, grating layer 30 can be arranged on the side of first substrate 21 second substrate 22 dorsad, or, grating layer 30 can be arranged on On the side of second substrate 22 first substrate 21 dorsad, or, grating layer 30 can be arranged on the light emission side of backlight.
Center a along sight line concentration zones A points to the direction of non-line-of-sight concentration zones B, and the screen periods of grating layer 30 gradually subtracts It is little, i.e. it is believed that along the center a of sight line concentration zones A to the edge of display device 10, the screen periods of grating layer 30 is gradually Reduce, as in figure 2 it is shown, sight line concentration zones A is positioned at the middle part of display device 10, non-line-of-sight concentration zones B around sight line concentration zones A, By center a top edge of display device 10 in Fig. 2 of sight line concentration zones A, the screen periods of grating layer 30 is gradually reduced；Sight line The midpoint of concentration zones A is a point in Fig. 2, by center a lower limb of display device 10, grating layer in Fig. 2 of sight line concentration zones A The screen periods of 30 is gradually reduced；The midpoint of sight line concentration zones A is a point in Fig. 2, by the center a of sight line concentration zones A in Fig. 2 The left hand edge of display device 10, the screen periods of grating layer 30 is gradually reduced；Shown in Fig. 2 by the center a of sight line concentration zones A The right hand edge of device 10, the screen periods of grating layer 30 is gradually reduced, so that being incident to the incident illumination of grating layer 30 at grating layer The light of the non-zero order diffraction obtained after there is diffraction in 30 regions corresponding with non-line-of-sight concentration zones B falls into the sight line of beholder.
The display device 10 that this utility model embodiment provides is provided with grating layer 30, is incident to the incidence of grating layer 30 There is diffraction at grating layer 30 in light, and obtains k order diffraction (k=0, ± 1, ± 2...), the diffraction angle of k order diffraction and grating layer Screen periods P between relation the most satisfied:
s i n θ = sinθ 0 + k λ P , k = 0 , ± 1 , ± 2... - - - ( 1 )
In formula (1), θ0For being incident to the angle of incidence of the incident illumination of grating layer 30, λ is the incident illumination being incident to grating layer 30 Wavelength.
Understand according to formula (1), when the incidence angle θ being incident to grating layer 300One timing, for 0 order diffraction, 0 grade is spread out The diffraction angle penetrated and the incidence angle θ being incident to grating layer 300Equal, the screen periods P of the grating layer angle of diffraction to 0 order diffraction Not impact；For non-zero order diffraction, such as 1 order diffraction, 2 order diffractions, 3 order diffractions etc., along with screen periods P Increase, the diffraction angle of non-zero order diffraction is all gradually increased.Therefore, by setting different screen periods P, i.e. adjustable is non-zero The diffraction angle of order diffraction, so that the diffracted ray of non-zero order diffraction sends towards direction initialization.
Such as, display device 10 includes that sight line concentration zones A and non-line-of-sight concentration zones B, sight line concentration zones A are positioned at display device The middle part of 10, if it is desired that beholder Z sees in Fig. 2 in the picture shown by display device, the left side of sight line concentration zones A bright Spend the brightness with sight line concentration zones A to match, i.e. make to be sent by the left side of sight line concentration zones A in Fig. 2, fallen into regarding of beholder Z The amount of light of the light of line and intensity with sent, fall into the light number of the light of the sight line of beholder Z by sight line concentration zones A in Fig. 2 Amount and intensity match, then can be set the screen periods of the grating layer 30 in the left side of sight line concentration zones A in Fig. 2, example As, sight line concentration zones A the light of the sight line send, fallen into beholder Z may be considered direct projection and enters the sight line of beholder Z, To think that sight line concentration zones A sends, falls into the light of the sight line of beholder Z for incident illumination through the grating corresponding to sight line concentration zones A The light of 0 order diffraction obtained after layer 30, the left side of sight line concentration zones A the light of the sight line send, fallen into beholder Z then needs The sight line of beholder Z just can be fallen into, i.e. it is believed that sent by the left side of sight line concentration zones A, fallen into beholder Z after deviation The light that light is the non-zero order diffraction that incident illumination obtains after the grating layer 30 in the left side corresponding to sight line concentration zones A of sight line, then The screen periods of the grating layer 30 in the left side of sight line concentration zones A in Fig. 2 can be made to be less than the grating layer corresponding to sight line concentration zones A The screen periods of 30, makes incident illumination obtain after the grating layer 30 corresponding with the left side of sight line concentration zones A in Fig. 2 occurs diffraction Non-zero order diffraction has the suitable angle of diffraction, and the light of non-zero order diffraction, towards the sight line deviation of beholder Z, increases by sight line in Fig. 2 The left side of concentration zones A sends, falls into amount of light and the intensity of the light of the sight line of beholder Z, so that being concentrated by sight line in Fig. 2 The left side of district A sends, falls into the amount of light of the light of the sight line of beholder Z and intensity and sent by sight line concentration zones A in Fig. 2, The amount of light and the intensity that fall into the light of the sight line of beholder Z match.
Accordingly, if it is desired that beholder Z sees in Fig. 2 in the picture shown by display device, the right side of sight line concentration zones A The brightness of side matches with the brightness of sight line concentration zones A, i.e. make to be sent by the right side of sight line concentration zones A in Fig. 2, fallen into viewing The amount of light of the light of the sight line of person Z and intensity with sent, fall into the light of the sight line of beholder Z by sight line concentration zones A in Fig. 2 Amount of light and intensity match, then can set the screen periods of the grating layer 30 on the right side of sight line concentration zones A in Fig. 2 Fixed, such as, sight line concentration zones A the light of the sight line send, fallen into beholder Z may be considered direct projection and enters the sight line of beholder Z, I.e. it is believed that the light of the sight line concentration zones A sight line that sends, fall into beholder Z is that incident illumination is through corresponding to sight line concentration zones A The light of 0 order diffraction obtained after grating layer 30, is sent, falls into the light of sight line of beholder Z then by the right side of sight line concentration zones A Need just can fall into the sight line of beholder Z after deviation, i.e. it is believed that sent by the right side of sight line concentration zones A, fallen into sight The light of the sight line of the person of seeing Z is the non-zero order diffraction that incident illumination obtains after the grating layer 30 on the right side corresponding to sight line concentration zones A Light, then can make the screen periods of the grating layer 30 on the right side of sight line concentration zones A in Fig. 2 be less than corresponding to sight line concentration zones A's The screen periods of grating layer 30, makes incident illumination after the grating layer 30 corresponding with the right side of sight line concentration zones A in Fig. 2 occurs diffraction The non-zero order diffraction obtained has the suitable angle of diffraction, and the light of non-zero order diffraction, towards the sight line deviation of beholder Z, increases by Fig. 2 The right side of middle sight line concentration zones A sends, falls into amount of light and the intensity of the light of the sight line of beholder Z, so that being regarded by Fig. 2 The right side of line concentration zones A send, fall into the amount of light of the light of the sight line of beholder Z and intensity with by sight line concentration zones A in Fig. 2 The amount of light and the intensity that send, fall into the light of the sight line of beholder Z match.
If it is desired that beholder Z sees in Fig. 2 in the picture shown by display device, the upside of sight line concentration zones A bright Spend the brightness with sight line concentration zones A to match, i.e. make to be sent by the upside of sight line concentration zones A in Fig. 2, fallen into regarding of beholder Z The amount of light of the light of line and intensity with sent, fall into the light number of the light of the sight line of beholder Z by sight line concentration zones A in Fig. 2 Amount and intensity match, then can be set the screen periods of the grating layer 30 of the upside of sight line concentration zones A in Fig. 2, example As, sight line concentration zones A the light of the sight line send, fallen into beholder Z may be considered direct projection and enters the sight line of beholder Z, To think that sight line concentration zones A sends, falls into the light of the sight line of beholder Z for incident illumination through the grating corresponding to sight line concentration zones A The light of 0 order diffraction obtained after layer 30, the upside of sight line concentration zones A the light of the sight line send, fallen into beholder Z then needs The sight line of beholder Z just can be fallen into, i.e. it is believed that sent by the upside of sight line concentration zones A, fallen into beholder Z after deviation The light that light is the non-zero order diffraction that incident illumination obtains after the grating layer 30 of the upside corresponding to sight line concentration zones A of sight line, then The screen periods of the grating layer 30 of the upside of sight line concentration zones A in Fig. 2 can be made to be less than the grating layer corresponding to sight line concentration zones A The screen periods of 30, makes incident illumination obtain after the grating layer 30 corresponding with the upside of sight line concentration zones A in Fig. 2 occurs diffraction Non-zero order diffraction has the suitable angle of diffraction, and the light of non-zero order diffraction, towards the sight line deviation of beholder Z, increases by sight line in Fig. 2 The upside of concentration zones A sends, falls into amount of light and the intensity of the light of the sight line of beholder Z, so that being concentrated by sight line in Fig. 2 The upside of district A sends, falls into the amount of light of the light of the sight line of beholder Z and intensity and sent by sight line concentration zones A in Fig. 2, The amount of light and the intensity that fall into the light of the sight line of beholder Z match.
If it is desired that beholder Z sees in Fig. 2 in the picture shown by display device, the downside of sight line concentration zones A bright Spend the brightness with sight line concentration zones A to match, i.e. make to be sent by the downside of sight line concentration zones A in Fig. 2, fallen into regarding of beholder Z The amount of light of the light of line and intensity with sent, fall into the light number of the light of the sight line of beholder Z by sight line concentration zones A in Fig. 2 Amount and intensity match, then can be set the screen periods of the grating layer 30 of the downside of sight line concentration zones A in Fig. 2, example As, sight line concentration zones A the light of the sight line send, fallen into beholder Z may be considered direct projection and enters the sight line of beholder Z, To think that sight line concentration zones A sends, falls into the light of the sight line of beholder Z for incident illumination through the grating corresponding to sight line concentration zones A The light of 0 order diffraction obtained after layer 30, the downside of sight line concentration zones A the light of the sight line send, fallen into beholder Z then needs The sight line of beholder Z just can be fallen into, i.e. it is believed that sent by the downside of sight line concentration zones A, fallen into beholder Z after deviation The light that light is the non-zero order diffraction that incident illumination obtains after the grating layer 30 of the downside corresponding to sight line concentration zones A of sight line, then The screen periods of the grating layer 30 of the downside of sight line concentration zones A in Fig. 2 can be made to be less than the grating layer corresponding to sight line concentration zones A The screen periods of 30, makes incident illumination obtain after the grating layer 30 corresponding with the downside of sight line concentration zones A in Fig. 2 occurs diffraction Non-zero order diffraction has the suitable angle of diffraction, and the light of non-zero order diffraction, towards the sight line deviation of beholder Z, increases by sight line in Fig. 2 The downside of concentration zones A sends, falls into amount of light and the intensity of the light of the sight line of beholder Z, so that being concentrated by sight line in Fig. 2 The downside of district A sends, falls into the amount of light of the light of the sight line of beholder Z and intensity and sent by sight line concentration zones A in Fig. 2, The amount of light and the intensity that fall into the light of the sight line of beholder Z match.
As an example it is assumed that the flat display apparatus that display device 10 is 60 cun, flat display apparatus a width of 132.83cm, it can be assumed that the left and right directions in Fig. 2 is the width of flat display apparatus, sight line concentration zones A is positioned at plane The middle part of display device, and the center a of sight line concentration zones A is corresponding with the center of flat display apparatus；Fig. 5 shows along Fig. 2 Left and right directions, the light of 1 order diffraction that incident illumination obtains at the diverse location generation diffraction of grating layer 30 falls into regarding of beholder Z Needing the graph of a relation of the angle of deviation and the position of display device 10, i.e. left and right directions along Fig. 2 during line, incident illumination is at grating The light of 1 order diffraction that the diverse location generation diffraction of layer 30 obtains falls into diffraction angle required during the sight line of beholder Z with aobvious The graph of a relation of the position of showing device 10, the such as left and right directions along Fig. 2, on grating layer 30 and between the center of display device 10 The position that distance is 40cm, there is the diffraction angle of 1 order diffraction that diffraction obtains in this position of grating layer 30 in incident illumination Should reach 35 °, then by being set the screen periods of this position of grating layer 30, incident illumination is in this position of grating layer 30 The place of putting occurs the diffraction angle of 1 order diffraction of diffraction acquisition to reach 35 °, then so that incident illumination is in this position of grating layer 30 Place occurs the light of 1 order diffraction of diffraction acquisition to fall in the sight line of beholder.
From the foregoing, the display device 10 that this utility model embodiment provides is provided with grating layer 30, and filled by display The center a of the sight line concentration zones A putting 10 points to the direction of the non-line-of-sight concentration zones B of display device 10, the grating week of grating layer 30 Phase is gradually reduced, thus is pointed to the direction of non-line-of-sight concentration zones B by the center a of sight line concentration zones A, and incident illumination is grating layer 30 The diffraction angle of the non-zero order diffraction of acquisition after penetrating that gains interest is gradually increased, and incident illumination is corresponding with non-line-of-sight concentration zones B at grating layer 30 Region in occur after diffraction, it is thus achieved that the light of non-zero order diffraction towards the sight line deviation of beholder Z so that incident illumination is at grating In layer 30 region corresponding with non-line-of-sight concentration zones B after generation diffraction, it is thus achieved that the light of non-zero order diffraction fall into regarding of beholder Z Line.It is thus possible to increase sent, fallen into the amount of light of the sight line light of beholder Z by the non-line-of-sight concentration zones B of display device 10 And intensity, make to be sent by the non-line-of-sight concentration zones B of display device 10, fallen into the amount of light of the light in the sight line of beholder Z with The amount of light being sent, being fallen into the light in the sight line of beholder Z by the sight line concentration zones A of display device 10 matches, by showing The non-line-of-sight concentration zones B of device 10 sends, falls into the intensity of the light in the sight line of beholder Z and by the sight line collection of display device 10 Middle district A sends, falls into the intensity of the light in the sight line of beholder Z and matches, and reduces difference in the picture that beholder Z is watched Corresponding to the luminance difference between the region of sight line concentration zones A and non-line-of-sight concentration zones B, thus improve what beholder Z was watched The brightness uniformity of picture, and then improve the viewing experience of beholder Z, bring truer, comfortable viewing body to beholder Z Test.
It addition, in the prior art, microprism or lenticule is generally used to realize the biography to the light in display device 10 The control broadcast, and then realize light that display device 10 is sent and be controlled, say, that in prior art, generally use base Structure in geometric optical theory design realizes the control of the propagation to the light in display device 10, but, along with to display The raising of the requirement of the resolution etc. of device 10, and curved-surface display device, 3D display device, nearly eye display device, AR/VR are aobvious The development of showing device, the light in display device 10 would generally occur diffraction effect and interference effect in communication process, and based on The structure of geometric optical theory design is limited to the control ability of the propagation of the light in display device 10, causes based on geometric optics The structure of principle design can not be controlled well in propagation to the light in display device 10.
In the display device 10 that this utility model embodiment provides, by being arranged on inside or the display of display floater 20 The grating layer 30 of the outside of panel 20, it is achieved the control to the propagation of the light in display device 10, and then realize display device 10 light sent are controlled, say, that in this utility model embodiment, use structure based on physical optics principle design Realize the control of propagation to the light in display device 10, design based on geometric optical theory compared to prior art uses Structure realize the control of the propagation to the light in display device 10, use structure based on physical optics principle design to aobvious The control ability of the propagation of the light in showing device 10 is higher, such that it is able to preferably the propagation to the light in display device 10 is carried out Control, improve the control effect that the propagation to the light in display device 10 is controlled.
In actual applications, the position of the viewing area before different according to the function of display device 10 and display device 10 Difference, the position of sight line concentration zones A and non-line-of-sight concentration zones B can change, such as, for some display device 10, Sight line concentration zones A may be located at the left side in Fig. 2, now, the right side that non-line-of-sight concentration zones B is positioned in Fig. 2, or, for certain For a little display devices 10, sight line concentration zones A may be located at the right side in Fig. 2, and now, non-line-of-sight concentration zones B is positioned in Fig. 2 Left side.Grating layer 30 can carry out adaptability design according to the position of sight line concentration zones A and non-line-of-sight concentration zones B.
It is worthy of note, the incident illumination being incident to grating layer 30 obtains k order diffraction (k after grating layer 30 occurs diffraction =0, ± 1, ± 2...), during to the regulation of the light direction in certain region of display device 10, generally by regulation grating layer 30 Screen periods region in corresponding with this region, to obtain after there is diffraction during to corresponding with this region through grating layer 30 region The angle of diffraction of the non-zero order diffraction obtained is adjusted, such as, in generally corresponding with this region by regulating grating layer 30 region Screen periods, is adjusted with the angle of diffraction to 1 order diffraction, 2 order diffractions, 3 order diffractions etc..In actual applications, it is incident to light The incident illumination of gate layer 30 obtains k order diffraction (k=0, ± 1, ± 2...), wherein, 0 order diffraction after grating layer 30 occurs diffraction Intensity is the strongest, and along with the increase of | k |, the intensity of k order diffraction is gradually reduced, and as a rule, the intensity of 2 order diffractions is spread out with 1 grade The one or more order of magnitude of intensity difference penetrated, the intensity of strength ratio 1 order diffraction of i.e. 2 order diffractions is much smaller, thus, to through grating When the angle of diffraction of the non-zero order diffraction obtained after there is diffraction during corresponding with this region region of layer 30 is adjusted, can be to 1 The angle of diffraction of order diffraction is adjusted.
In this utility model embodiment, with to 1 order diffraction obtained after the incident illumination generation diffraction of grating layer 30 The angle of diffraction illustrates as a example by being adjusted, and with to 0 order diffraction obtained after the incident illumination generation diffraction of grating layer 30 The intensity of intensity and 1 order diffraction illustrates as a example by being adjusted respectively.
In the above-described embodiments, according to the viewing area before the difference of the function of display device 10, and display device 10 The difference of position, the set-up mode of grating layer 30 can have multiple, below the exemplary set-up mode enumerating three kinds of grating layers 30, But it is not limited to cited three kind mode.
Mode one, refers to Fig. 4, Fig. 6 and Fig. 7, and display device 10 includes multiple R pixel 24, multiple G pixel 25 and multiple B pixel 26, grating layer 30 includes: the R grating region 33 corresponding with R pixel 24, the G grating region 34, Yi Jiyu corresponding with G pixel 25 The B grating region 35 of B pixel 26 correspondence；The center a of sight line concentration zones A is corresponding with the center of display device 10, along display device 10 Horizontal, by the center of display device 10 to the both sides of display device 10, the screen periods of R grating region 33, the light of G grating region 34 The screen periods of grid cycle and B grating region 35 is all gradually reduced.
Specifically, it is described in detail as a example by the flat display apparatus that display device 10 is 70 cun, display device 10 A width of 154.97cm, a height of 87.17cm of display device 10, such as, as shown in Figure 6, in Fig. 6, the direction of left and right is display device The width of 10, direction upper and lower in Fig. 6 is the short transverse of display device 10, and the viewing area of display device 10 is positioned at display The dead ahead of device 10, and the viewing area of display device 10 is relative with display device 10 center in the direction of the width；Sight line collection Middle district A is positioned at the display device 10 middle part along its width, i.e. sight line concentration zones A and is positioned at display device 10 left and right along Fig. 6 The middle part in direction, the center a of sight line concentration zones A is corresponding with the center of display device 10, and non-line-of-sight concentration zones B is positioned in Fig. 6 and regards The left and right sides of line concentration zones A.
Display device 10 laterally may be considered the direction parallel with the eyes line of beholder Z, display device 10 Longitudinally may be considered the direction vertical with the eyes line of beholder Z, for above-mentioned display device 10, the width of display device 10 Degree is oriented parallel to the line between the eyes of beholder Z, say, that the horizontal stroke that direction is display device 10 of left and right in Fig. 6 To, direction upper and lower in Fig. 6 is the longitudinal direction of display device 10.
When beholder Z watches the picture shown by display device 10, beholder Z can be more than with the distance of display device 10 0m and less than 500m, in order to make beholder Z obtain preferably visual angle, beholder Z can be preferably with the distance of display device 10 1.5m。
Now, when beholder Z watches the picture shown by display device 10, the sight line of beholder Z concentrates on display device 10 along the middle part of its width, i.e. left and right directions along Fig. 6, the sight line of beholder Z concentrates on the middle part of display device 10.
Referring to Fig. 6 and Fig. 7, display device 10 includes multiple R pixel 24, multiple G pixel 25 and multiple B pixel 26, light Gate layer 30 includes: the R grating region 33 corresponding with R pixel 24, the G grating region 34 corresponding with G pixel 25, and right with B pixel 26 The B grating region 35 answered；Horizontal along display device 10, by the center of display device 10 to the both sides of display device 10, R grating region The screen periods of screen periods, the screen periods of G grating region 34 and the B grating region 35 of 33 is all gradually reduced, say, that along aobvious Showing device 10 horizontal, the center of distance display device 10 is the most remote, and incident illumination occurs 1 grade that diffraction obtains behind R grating region 33 The angle of diffraction of diffraction is the biggest, and incident illumination occurs the angle of diffraction of 1 order diffraction that diffraction obtains the biggest behind G grating region 34, incident illumination The angle of diffraction of 1 order diffraction occurring diffraction to obtain behind B grating region 35 is the biggest, with in Fig. 8 shown in curve q1 along display device The light that the various location horizontal, display device 10 of 10 sends needs corresponding towards the angle of beholder's Z deviation.
As shown in Figure 6 and Figure 8, along the left and right directions in Fig. 6, can obtain according to q1 curve in Fig. 8 and formula (1) The distribution curve of the screen periods of R grating region 33, as shown in curve q2 in Fig. 8, R grating region 33 is right with the middle part of display device 10 The screen periods in the region answered is maximum, and the screen periods in the region that R grating region 33 is corresponding with the both sides of display device 10 is less, example As, the screen periods in the region that R grating region 33 is corresponding with the middle part of display device 10 can be more than 50 μm, and R grating region 33 is with aobvious The screen periods in the region that the both sides of showing device 10 are corresponding can be 1.5 μm.
Along the left and right directions in Fig. 6, the grating of G grating region 34 can be obtained according to q1 curve in Fig. 8 and formula (1) The distribution curve in cycle, as shown in curve q3 in Fig. 8, the grating in the region that G grating region 34 is corresponding with the middle part of display device 10 Cycle is maximum, and the screen periods in the region that G grating region 34 is corresponding with the both sides of display device 10 is less, such as, G grating region 34 and The screen periods in the region that the middle part of display device 10 is corresponding can be more than 50 μm, the both sides of G grating region 34 and display device 10 The screen periods in corresponding region can be 1.2 μm.
Along the left and right directions in Fig. 6, the grating of B grating region 35 can be obtained according to q1 curve in Fig. 8 and formula (1) The distribution curve in cycle, as shown in curve q4 in Fig. 8, the grating in the region that B grating region 35 is corresponding with the middle part of display device 10 Cycle is maximum, and the screen periods in the region that B grating region 35 is corresponding with the both sides of display device 10 is less, such as, B grating region 35 and The screen periods in the region that the middle part of display device 10 is corresponding can be more than 50 μm, the both sides of B grating region 35 and display device 10 The screen periods in corresponding region can be 1 μm.
In mode one, by screen periods, the screen periods of G grating region 34 and B grating region to R grating region 33 respectively The screen periods of 35 is set respectively, it is achieved to the HONGGUANG obtained through R pixel 24, through the green glow of G pixel 25 acquisition with through B picture The blue lights that element 26 obtains are adjusted respectively and control, and make along display device 10 is horizontal, by the regional of display device 10 The amount of light and the intensity that send, fall into the light in the sight line of beholder Z match, and reduce the picture that beholder Z is watched Correspond respectively to the luminance difference between the region of sight line concentration zones A and non-line-of-sight concentration zones B, thus improve beholder Z and watched The brightness uniformity of the picture arrived, and then improve the viewing experience of beholder Z, bring truer, comfortable sight to beholder Z See experience.
In mode one, horizontal, by the center of display device 10 to the both sides of display device 10, R along display device 10 The screen periods of the screen periods of grating region 33, the screen periods of G grating region 34 and B grating region 35 is all gradually reduced, therefore, and side Formula one can realize being adjusted along the horizontal brightness to the picture that beholder Z watches of display device 10, thus improves edge The brightness uniformity of the picture that the horizontal beholder Z of display device 10 is watched.
In mode one, multiple R pixels 24 of display device 10, multiple G pixel 25 and the arrangement mode of multiple B pixel 26 Can be multiple, below exemplary enumerate a kind of multiple R pixel 24, multiple G pixel 25 and the arrangement mode of multiple B pixel 26.
Please continue to refer to Fig. 6, horizontal along display device 10, display device 10 includes multiple R pixel column, multiple G pixel Row and multiple B pixel columns, alternately, R pixel column is by the longitudinal direction along display device 10 for R pixel column, G pixel column and B pixel column Multiple R pixels 24 of arrangement are formed, and G pixel column is formed by multiple G pixels 25 of the longitudinal arrangement along display device 10, B pixel Row are formed by multiple B pixels 26 of the longitudinal arrangement along display device 10.Specifically, as shown in Figure 6, the left and right directions in Fig. 6 Horizontal for display device 10, the longitudinal direction that above-below direction is display device 10 in Fig. 6, multiple R pixels 24, multiple G pixel 25 Being collectively forming a matrix with multiple B pixels 26, matrix column is along the longitudinal extension of display device 10, and the row of matrix is along display dress Putting the horizontal expansion of 10, matrix column includes multiple R pixel column, multiple G pixel column and multiple B pixel column, wherein, R pixel column Being formed along the longitudinal arrangement of display device 10 by multiple R pixels 24, G pixel column is by multiple G pixels 25 indulging along display device 10 To arrangement formed, B pixel column is formed along the longitudinal arrangement of display device 10 by multiple B pixels 26, and R pixel column, G pixel column and B pixel column along display device 10 laterally the most alternately, say, that horizontal along display device 10, R pixel 24, G pixel 25 With B pixel 26 alternately, along the longitudinal direction of display device 10, R pixel 24, G pixel 25 and B pixel 26 continuous arrangement respectively.
When the arrangement mode of multiple R pixels 24 of display device 10, multiple G pixel 25 and multiple B pixel 26 uses above-mentioned During arrangement mode, the set-up mode of grating layer 30 can be in the following way: please continue to refer to Fig. 7, grating layer 30 includes multiple Grating projection 31, grating protruding 31 be strip grating projection, and grating projection 31 is along the longitudinal extension of display device 10, Duo Geguang Grid projection 31 is along the horizontally-parallel arrangement of display device 10.Specifically, the left and right directions in Fig. 7 is the horizontal of display device 10, Above-below direction in Fig. 7 is the longitudinal direction of display device 10, and grating layer 30 includes multiple grating projection 31, two adjacent two light Having gap 32 between grid projection 31, grating projection 31 includes: the R grating corresponding with R pixel 24 is protruding, corresponding with G pixel 25 Protruding and corresponding with the B pixel 26 B grating of G grating protruding；Grating protruding 31 is that strip grating is protruding, and grating is protruding 31 along the longitudinal extension of display device 10, say, that R grating is protruding, G grating is protruding and B grating projection is strip light Grid are protruding, and R grating is protruding parallel with the bearing of trend of R pixel column, and G grating is protruding parallel with the bearing of trend of G pixel column, B light Grid are protruding parallel with the bearing of trend of B pixel column.
Mode two, refers to Fig. 3, Figure 11 and Figure 12, and display device 10 includes multiple R pixel 24, multiple G pixel 25 and many Individual B pixel 26, grating layer 30 includes: the R grating region 33 corresponding with R pixel 24, the G grating region 34 corresponding with G pixel 25, and The B grating region 35 corresponding with B pixel 26；The center a of sight line concentration zones A is corresponding with the center of display device 10, along display device The longitudinal direction of 10, by the center of display device 10 to the both sides of display device 10, the screen periods of R grating region 33, G grating region 34 The screen periods of screen periods and B grating region 35 is all gradually reduced.
Specifically, it is described in detail as a example by the flat display apparatus that display device 10 is 70 cun, display device 10 A width of 154.97cm, a height of 87.17cm of display device 10, such as, as shown in figure 11, in Figure 11, the direction of left and right is display dress Putting the width of 10, direction upper and lower in Figure 11 is the short transverse of display device 10, and the viewing area of display device 10 is positioned at The dead ahead of display device 10, and the viewing area of display device 10 is the most right with display device 10 center in the direction of the width；Depending on Line concentration zones A is positioned at the display device 10 middle part along its short transverse, i.e. sight line concentration zones A and is positioned at display device 10 along Figure 11 The middle part of above-below direction, the center a of sight line concentration zones A is corresponding with the center of display device 10, and non-line-of-sight concentration zones B is positioned at Figure 11 The both sides up and down of middle sight line concentration zones A.
Display device 10 laterally may be considered the direction parallel with the eyes line of beholder Z, display device 10 Longitudinally may be considered the direction vertical with the eyes line of beholder Z, for above-mentioned display device 10, the width of display device 10 Degree is oriented parallel to the line between the eyes of beholder Z, say, that the horizontal stroke that direction is display device 10 of left and right in Figure 11 To, direction upper and lower in Figure 11 is the longitudinal direction of display device 10.
When beholder Z watches the picture shown by display device 10, beholder Z can be more than with the distance of display device 10 0m and less than 500m, in order to make beholder Z obtain preferably visual angle, beholder Z can be preferably with the distance of display device 10 1.5m。
Now, when beholder Z watches the picture shown by display device 10, the sight line of beholder Z concentrates on display device 10 along the middle part of its short transverse, i.e. above-below direction along Figure 11, the sight line of beholder Z concentrates in display device 10 Portion.
Referring to Figure 11 and Figure 12, display device 10 includes multiple R pixel 24, multiple G pixel 25 and multiple B pixel 26, Grating layer 30 includes: the R grating region 33 corresponding with R pixel 24, the G grating region 34 corresponding with G pixel 25, and with B pixel 26 Corresponding B grating region 35；Along the longitudinal direction of display device 10, by the center of display device 10 to the both sides of display device 10, R grating The screen periods of the screen periods in district 33, the screen periods of G grating region 34 and B grating region 35 is all gradually reduced, say, that edge The longitudinal direction of display device 10, the center of distance display device 10 is the most remote, and incident illumination occurs 1 that diffraction obtains behind R grating region 33 The angle of diffraction of order diffraction is the biggest, and incident illumination occurs the angle of diffraction of 1 order diffraction that diffraction obtains the biggest behind G grating region 34, incident Light occurs the angle of diffraction of 1 order diffraction that diffraction obtains the biggest behind B grating region 35, with in Figure 13 shown in curve q5 along display dress Put the light that the various location longitudinal, display device 10 of 10 sends and need corresponding towards the angle of beholder's Z deviation.
As illustrated in figures 11 and 13, along the left and right directions in Figure 11, permissible according to q5 curve in Figure 13 and formula (1) Obtain the distribution curve of the screen periods of R grating region 33, as shown in curve q6 in Figure 13, R grating region 33 and display device 10 The screen periods in the region that middle part is corresponding is maximum, the screen periods in the region that R grating region 33 is corresponding with the both sides of display device 10 Less, such as, the screen periods in the region that R grating region 33 is corresponding with the middle part of display device 10 can be more than 50 μm, R grating region The screen periods in 33 regions corresponding with the both sides of display device 10 can be 2.5 μm.
Along the left and right directions in Figure 11, the light of G grating region 34 can be obtained according to q5 curve in Figure 13 and formula (1) The distribution curve of grid cycle, as shown in curve q7 in Figure 13, the light in the region that G grating region 34 is corresponding with the middle part of display device 10 Grid cycle is maximum, and the screen periods in the region that G grating region 34 is corresponding with the both sides of display device 10 is less, such as, and G grating region 34 The screen periods in the region corresponding with the middle part of display device 10 can be more than 50 μm, G grating region 34 and the two of display device 10 The screen periods in the region that side is corresponding can be 2.1 μm.
Along the left and right directions in Figure 11, the light of B grating region 35 can be obtained according to q5 curve in Figure 13 and formula (1) The distribution curve of grid cycle, as shown in curve q8 in Figure 13, the light in the region that B grating region 35 is corresponding with the middle part of display device 10 Grid cycle is maximum, and the screen periods in the region that B grating region 35 is corresponding with the both sides of display device 10 is less, such as, and B grating region 35 The screen periods in the region corresponding with the middle part of display device 10 can be more than 50 μm, B grating region 35 and the two of display device 10 The screen periods in the region that side is corresponding can be 1.9 μm.
In mode two, by screen periods, the screen periods of G grating region 34 and B grating region to R grating region 33 respectively The screen periods of 35 is set respectively, it is achieved to the HONGGUANG obtained through R pixel 24, through the green glow of G pixel 25 acquisition with through B picture The blue light that element 26 obtains is adjusted respectively and controls, and makes the longitudinal direction along display device 10, by the regional of display device 10 The amount of light and the intensity that send, fall into the light in the sight line of beholder Z match, and reduce the picture that beholder Z is watched Correspond respectively to the luminance difference between the region of sight line concentration zones A and non-line-of-sight concentration zones B, thus improve beholder Z and watched The brightness uniformity of the picture arrived, and then improve the viewing experience of beholder Z, bring truer, comfortable sight to beholder Z See experience.
In mode two, along the longitudinal direction of display device 10, by the center of display device 10 to the both sides of display device 10, R The screen periods of the screen periods of grating region 33, the screen periods of G grating region 34 and B grating region 35 is all gradually reduced, therefore, and side Formula two can realize being adjusted along longitudinal brightness to the picture that beholder Z watches of display device 10, thus improves edge The brightness uniformity of the picture that longitudinal beholder Z of display device 10 is watched.
In mode two, multiple R pixels 24 of display device 10, multiple G pixel 25 and the arrangement mode of multiple B pixel 26 Can be multiple, below exemplary enumerate a kind of multiple R pixel 24, multiple G pixel 25 and the arrangement mode of multiple B pixel 26.
Please continue to refer to Figure 11, along the longitudinal direction of display device 10, display device 10 includes multiple R pixel column, multiple G pixel Row and multiple B pixel columns, R pixel column, G pixel column and B pixel column alternately, horizontal by along display device 10 of R pixel column Multiple R pixels 24 of arrangement are formed, and G pixel column is formed by the transversely arranged multiple G pixels 25 along display device 10, B pixel Row is formed by the transversely arranged multiple B pixels 26 along display device 10.Specifically, as shown in figure 11, the right and left in Figure 11 Horizontal to for display device 10, the longitudinal direction that above-below direction is display device 10 in Figure 11, multiple R pixels 24, multiple G pixel 25 and multiple B pixel 26 be collectively forming a matrix, matrix column is along the longitudinal extension of display device 10, and the row of matrix is along display The horizontal expansion of device 10, the row of matrix includes multiple R pixel column, multiple G pixel column and multiple B pixel column, wherein, R pixel Row formed along the transversely arranged of display device 10 by multiple R pixels 24, G pixel column by multiple G pixels 25 along display device 10 Transversely arranged formation, B pixel column is formed along the transversely arranged of display device 10 by multiple B pixels 26, and R pixel column, G pixel column With B pixel column along display device 10 longitudinally the most alternately, say, that along the longitudinal direction of display device 10, R pixel 24, G pixel 25 and B pixels 26 alternately, horizontal along display device 10, R pixel 24, G pixel 25 and B pixel 26 continuous arrangement respectively.
When the arrangement mode of multiple R pixels 24 of display device 10, multiple G pixel 25 and multiple B pixel 26 uses above-mentioned During arrangement mode, the set-up mode of grating layer 30 can be in the following way: please continue to refer to Figure 12, grating layer 30 includes multiple Grating projection 31, grating protruding 31 be strip grating projection, and grating projection 31 is along the horizontal expansion of display device 10, Duo Geguang Grid projection 31 is along the parallel longitudinal arrangement of display device 10.Specifically, the left and right directions in Figure 12 is the horizontal of display device 10, Above-below direction in Figure 12 is the longitudinal direction of display device 10, and grating layer 30 includes multiple grating projection 31, two adjacent two Having gap 32 between grating projection 31, grating projection 31 includes: the R grating corresponding with R pixel 24 is protruding, right with G pixel 25 The G grating answered is protruding, and the B grating projection corresponding with B pixel 26；Grating protruding 31 is that strip grating is protruding, and grating is convex Play 31 along the horizontal expansion of display device 10, say, that R grating is protruding, G grating is protruding and B grating projection is strip Grating is protruding, and R grating is protruding parallel with the bearing of trend of R pixel column, and G grating is protruding parallel with the bearing of trend of G pixel column, B Grating is protruding parallel with the bearing of trend of B pixel column.
The display device 10 that mode one provides can improve the picture that the horizontal beholder Z along display device 10 is watched Brightness uniformity, the longitudinal beholder Z that can improve along display device 10 of display device 10 provided in mode two is watched The brightness uniformity of the picture arrived, in actual applications, it is also possible to improve the horizontal and vertical viewing along display device 10 simultaneously The brightness uniformity of the picture that person Z is watched.
Mode three, refers to Figure 14 and Figure 15, and display device 10 includes the multiple R pixels 24 being arranged in array, multiple G picture Element 25 and multiple B pixel 26, grating layer 30 includes: the R grating region 33 corresponding with R pixel 24, the G grating corresponding with G pixel 25 District 34, and the B grating region 35 corresponding with B pixel 26；The center a of sight line concentration zones A is corresponding with the center of display device 10, edge The longitudinal direction of display device 10, by the center of display device 10 to the both sides of display device 10, the screen periods of R grating region 33, G The screen periods of grating region 34 and the screen periods of B grating region 35 are all gradually reduced；Horizontal, by showing along display device 10 The center of device 10 to the both sides of display device 10, the screen periods of R grating region 33, the screen periods of G grating region 34 and B grating The screen periods in district 35 is all gradually reduced.
Specifically, it is described in detail as a example by the flat display apparatus that display device 10 is 70 cun, display device 10 A width of 154.97cm, a height of 87.17cm of display device 10, such as, as shown in figure 14, in Figure 14, the direction of left and right is display dress Putting the width of 10, direction upper and lower in Figure 14 is the short transverse of display device 10, and the viewing area of display device 10 is positioned at The dead ahead of display device 10, and the viewing area of display device 10 is the most right with display device 10 center in the direction of the width, sees When the person of seeing Z watches the picture shown by display device 10, beholder Z can be more than 0m with the distance of display device 10 and be less than 500m, in order to make beholder Z obtain preferably visual angle, beholder Z can be preferably 1.5m with the distance of display device 10；This Time, when beholder Z watches the picture shown by display device 10, the sight line of beholder Z concentrates on display device 10 central region, Sight line concentration zones A is relative with the central region of display device 10, and non-line-of-sight concentration zones B is positioned at the surrounding of sight line concentration zones A.
Display device 10 laterally may be considered the direction parallel with the eyes line of beholder Z, display device 10 Longitudinally may be considered the direction vertical with the eyes line of beholder Z, for above-mentioned display device 10, the width of display device 10 Degree is oriented parallel to the line between the eyes of beholder Z, say, that the horizontal stroke that direction is display device 10 of left and right in Figure 14 To, direction upper and lower in Figure 14 is the longitudinal direction of display device 10.
In mode three, along the longitudinal direction of display device 10, by the center of display device 10 to the both sides of display device 10, R The screen periods of the screen periods of grating region 33, the screen periods of G grating region 34 and B grating region 35 is all gradually reduced；Along aobvious Showing device 10 horizontal, by the center of display device 10 to the both sides of display device 10, the screen periods of R grating region 33, G grating The screen periods in district 34 and the screen periods of B grating region 35 are all gradually reduced.Therefore, horizontal, by showing along display device 10 HONGGUANG, green glow and the blue light that the both sides of device 10 send is respectively facing the sight line deviation of beholder Z, increases along display device 10 Laterally, the light that the both sides of display device 10 send fall into amount of light and the intensity of the light of the sight line of beholder Z, it is achieved along aobvious The horizontal brightness to the picture that beholder Z watches of showing device 10 is adjusted；Along the longitudinal direction of display device 10, display fill Putting HONGGUANG, green glow and the blue light that the both sides of 10 send and be respectively facing the sight line deviation of beholder Z, increase along display device 10 is vertical Amount of light and the intensity of the light of the sight line of beholder Z is fallen into, it is achieved along display in the light that, the both sides of display device 10 send Longitudinal brightness to the picture that beholder Z watches of device 10 is adjusted.It is to say, the display dress provided in mode three Putting in 10, the screen periods of the screen periods of R grating region 33, the screen periods of G grating region 34 and B grating region 35 is respectively along display The horizontal and vertical change of device 10, can improve what the horizontal and vertical beholder Z along display device 10 was watched simultaneously The brightness uniformity of picture.
It is noted that in mode three, multiple grating projections 31 of grating layer 30 may be located in same layer, grating Multiple grating projections 31 of layer 30 can be arranged in array, and the arrangement of multiple grating projection 31 meets along display device 10 simultaneously Horizontal and vertical arrangement requirement.In actual applications, grating layer 30 can include lateral light gate layer that stacking arranges and vertical To grating layer, wherein, lateral light gate layer uses the set-up mode of the grating layer 30 in the display device 10 provided with mode one, vertical The display provided with the set-up mode of the grating layer 30 in the display device 10 of mode two offer, i.e. mode three is provided to grating layer In the grating layer 30 of device 10, lateral light gate layer and longitudinal grating layer can be configured respectively.
In aforesaid way one, mode two and mode three, display device 10 includes multiple R pixel 24, multiple G pixel 25 and many Individual B pixel 26, grating layer 30 includes: the R grating region 33 corresponding with R pixel 24, the G grating region 34 corresponding with G pixel 25, and The B grating region 35 corresponding with B pixel 26, by screen periods, the screen periods of G grating region 34 and B to R grating region 33 respectively The screen periods of grating region 35 is designed, and i.e. in mode one, mode two and mode three, the setting of grating layer 30 is according to display Multiple R pixels 24 of device 10, multiple G pixel 25 and multiple B pixel 26 are carried out, with right with R pixel 24 to display device 10 Light that light that the region answered sends, display device 10 region corresponding with G pixel 25 sends, convenient to display device 10 and B picture The light that the region of element 26 correspondences sends is respectively controlled, thus improves the viewing experience of beholder Z further, to beholder Z Bring truer, comfortable viewing experience.
It is noted that display device 10 includes multiple R pixel 24, multiple G pixel 25 and multiple B pixel 26, grating Layer 30 includes: the R grating region 33 corresponding with R pixel 24, the G grating region 34 corresponding with G pixel 25, and corresponding with B pixel 26 B grating region 35, when in 3D display device, nearly eye display device or AR/VR display device arrange include R grating region 33, G light During the grating layer 30 of grating region 35, grid region 34 and B, R grating region 33 and R pixel 24, G grating region 34 and G pixel 25, B grating region 35 Higher Aligning degree all should be had, i.e. when each grating of grating layer 30 protruding 31 is the most different, alignment has the most homochromy with B pixel 26 Two color pixels, i.e. alignment R pixel 24 and G pixel 25, grating layer 30 when each grating of grating layer 30 protruding 31 is the most different Each grating protruding 31 the most different time alignment R pixel 24 and B pixel 26, when each grating of grating layer 30 protruding 31 is the most different Alignment G pixel 25 and B pixel 26.
In the above-described embodiments, grating layer 30 includes: the R grating region 33 corresponding with R pixel 24, the G corresponding with G pixel 25 Grating region 34, and the B grating region 35 corresponding with B pixel 26, R grating region 33, grating region 35, G grating region 34 and B can same layer Arrange, or, grating layer 30 can be divided into ground floor, the second layer and the third layer that stacking is arranged, and R grating region 33 may be located at the One layer, G grating region 34 may be located at the second layer, and B grating region 35 may be located at third layer, i.e. R grating region 33, G grating region 34 and B Grating region 35 different layers is arranged, arrange with layer with by R grating region 33, grating region 35, G grating region 34 and B compared with, be possible to prevent system When making grating layer 30, R grating region 33, grating region 35, G grating region 34 and B interfere, and facilitate the making of grating layer 30.
In actual applications, the setting of grating layer 30 can not also consider multiple R pixels 24 of display device 10, multiple G Pixel 25 and the factor of multiple B pixel 26, the i.e. screen periods of grating layer 30 only need to meet: the center a along sight line concentration zones A refers to To the direction of non-line-of-sight concentration zones B, the screen periods of grating layer 30 is gradually reduced, and grating layer 30 is not for R pixel 24, G pixel 25 and B pixels 26 are designed respectively.
In the above-described embodiments, by the screen periods of grating layer 30 regional is set, grating layer 30 is made Screen periods is gradually reduced to the edge of display device 10 by the center a of sight line concentration zones A, so that being regarded by the non-of display device 10 The light that line concentration zones B sends can towards the sight line deviation of beholder Z, increase sent by the non-line-of-sight concentration zones B of display device 10, Fall into amount of light and the intensity of light in the sight line of beholder Z, it is achieved make to be sent out by the non-line-of-sight concentration zones B of display device 10 Go out, fall into the amount of light of the light in the sight line of beholder Z and sent by the sight line concentration zones A of display device 10, fallen into viewing The amount of light of the light in the sight line of person Z matches, and makes to be sent by the non-line-of-sight concentration zones B of display device 10, fallen into beholder Z Sight line in intensity and the light in the sight line being sent, being fallen into beholder Z by the sight line concentration zones A of display device 10 strong of light Degree matches.
In actual applications, the display device 10 that this utility model embodiment provides is provided with grating layer 30, is incident to The incident illumination of grating layer 30 can occur diffraction and interference at grating layer 30, and incident illumination obtains after there is diffraction at grating layer 30 K order diffraction can interfere phenomenon that is long mutually or that interfere cancellation, and there is the k of acquisition after diffraction in incident illumination at grating layer 30 Order diffraction can interfere long mutually or interfere cancellation relevant to the thickness of the grating projection 31 of grating layer 30, therefore, it is possible to pass through Set the thickness of the grating projection 31 of grating layer 30, so that certain order diffraction interferes long mutually or interferes cancellation, and then adjust certain The intensity of order diffraction.
Generally, when screen periods and grating dutycycle one timing, the folding of the grating projection 31 of grating layer 30 of grating layer 30 The rate of penetrating is nG, the refractive index of the adjacent implant in the gap 32 between two grating projections 31 is nS, it is incident to grating layer 30 The wavelength of incident illumination be λ, when the thickness h of grating layer 30 isAnd m is when taking half-integer, incident illumination is at grating layer 30 0 order diffraction obtained after there is diffraction interferes cancellation, and 1 order diffraction that incident illumination obtains after grating layer 30 occurs diffraction is sent out Raw interference is the longest, when the thickness h of grating layer 30 isAnd during m round numbers, there is diffraction at grating layer 30 in incident illumination 0 order diffraction of rear acquisition interferes the longest, and 1 order diffraction that incident illumination obtains after grating layer 30 occurs diffraction interferes phase Disappear.
Such as, refer to Figure 16 and Figure 17, when the screen periods of grating layer 30 is 3 μm, the grating dutycycle of grating layer 30 It is 0.5, and | nG-nS| when being 0.5, it is incident to 0 order diffraction that the incident illumination of grating layer 30 obtains after grating layer 30 occurs diffraction Light extraction efficiency and grating layer 30 grating projection 31 thickness between relation Figure 16 shown in, be incident to the incidence of grating layer 30 Between the thickness of the light extraction efficiency of 1 order diffraction that light obtains after grating layer 30 occurs diffraction and the grating projection 31 of grating layer 30 Relation as shown in figure 17, from Figure 16 and Figure 17, when m round numbers, such as when m takes 1,0 order diffraction interferes length, 1 Order diffraction interferes cancellation, and when m takes half-integer, such as m takesTime, 0 order diffraction interferes cancellation, and 1 order diffraction occurs dry Relate to the longest.
It is to say, by the intensity of the light sent in display device 10 regional also with the grating projection 31 of grating layer 30 Thickness relevant, and according to above-mentioned conclusion, can be by grating corresponding with sight line concentration zones A and non-line-of-sight concentration zones B respectively The thickness of grating projection 31 of layer 30 is set, and spreads out increasing incident illumination in the non-line-of-sight concentration zones B of grating layer 30 The intensity of the non-zero order diffraction obtained after penetrating, and then increase is sent by the region that display device 10 is corresponding with non-line-of-sight concentration zones B, Fall into the intensity of light in the sight line of beholder Z, thus make further by display device 10 corresponding to the district of non-line-of-sight concentration zones B Territory sends, falls into the intensity of the light in the sight line of beholder Z and sends out corresponding to the region of sight line concentration zones A with by display device 10 The intensity going out, falling into the light in the sight line of beholder Z matches.
Such as, sight line concentration zones A the light of the sight line send, fallen into beholder Z may be considered direct projection and enters beholder Z's Sight line, i.e. it is believed that the light of the sight line concentration zones A sight line that sends, fall into beholder Z is that incident illumination is through concentrating corresponding to sight line The light of 0 order diffraction obtained after the grating layer 30 of district A, and sent, fall into the light of the sight line of beholder Z by non-line-of-sight concentration zones B Then need just can fall into the sight line of beholder Z after deviation, i.e. it is believed that sent by non-line-of-sight concentration zones B, fallen into viewing The light of the sight line of person Z is the light of the non-zero order diffraction that incident illumination obtains after the grating layer 30 corresponding to non-line-of-sight concentration zones B, by The non-line-of-sight concentration zones B of display device 10 sends, falls into the intensity of the light in the sight line of beholder Z may be less than being filled by display Put the sight line concentration zones A of 10 and send, fall into the intensity of the light in the sight line of beholder Z.Therefore, it can concentrating with sight line respectively The thickness of the grating projection 31 of the grating layer 30 that district A is corresponding with non-line-of-sight concentration zones B is set, and makes incident illumination through corresponding to regarding 0 order diffraction obtained after the grating layer 30 of line concentration zones A does not occur interfere mutually long phenomenon completely or interfere cancellation phenomenon completely, makes The non-zero order diffraction that incident illumination obtains after corresponding to the grating layer 30 of non-line-of-sight concentration zones B occurs to interfere completely, regulates incident illumination The intensity of the light of 0 order diffraction obtained after the grating layer 30 corresponding to sight line concentration zones A, regulation incident illumination is through regarding corresponding to non- The intensity of the light of the non-zero order diffraction obtained after the grating layer 30 of line concentration zones B, makes incident illumination through corresponding to sight line concentration zones A's The intensity of the light of 0 order diffraction obtained after grating layer 30 obtains after corresponding to the grating layer 30 of non-line-of-sight concentration zones B with incident illumination The intensity of the light of the non-zero order diffraction obtained matches, so that sent by the non-line-of-sight concentration zones B of display device 10, fallen into viewing The intensity of the light in the sight line of person Z and the light in the sight line being sent, being fallen into beholder Z by the sight line concentration zones A of display device 10 Intensity match..
Specifically, often it may be assumed that the incident illumination being incident to grating layer 30 is incident for being perpendicular to grating layer 30, i.e. incident Incident illumination to grating layer 30 is collimated incident, is incident to the incidence angle θ of the incident illumination of grating layer 300It is 0 °, such as, display dress Put 10 for liquid crystal indicator time, display device 10 includes display floater 20 and backlight, and backlight provides for display floater 20 Area source, when area source is incident in display floater 20, generally vertical incident in display floater 20, grating layer 30 is arranged at aobvious Show panel 20 interiorly or exteriorly time, it is incident that area source is also perpendicularly to grating layer 30.
Grating layer 30 includes multiple grating projection 31, the thickness h of the grating projection 31 corresponding with non-line-of-sight concentration zones BBFull Foot:
h B = m B λ | n G B - n S B | - - - ( 2 )
Wherein, nGBFor the refractive index of the grating projection 31 corresponding with non-line-of-sight concentration zones B, nSBFor with non-line-of-sight concentration zones B The refractive index of corresponding, the adjacent implant in the gap 32 between two grating projections 31, λ is to be incident to entering of grating layer 30 Penetrate the wavelength of light, mBIt is the second constant, the second constant mBMeet:J=0,1,2,3,4....
Thickness h when the grating projection 31 corresponding with non-line-of-sight concentration zones BBWhen meeting formula (2), incident illumination is corresponding to 1 order diffraction that the grating layer 30 of non-line-of-sight concentration zones B obtains after there is diffraction interferes the longest, adds incident illumination in correspondence The intensity of 1 order diffraction obtained after the grating layer 30 of non-line-of-sight concentration zones B occurs diffraction, thus add by display device 10 Non-line-of-sight concentration zones B send, fall into the intensity of the light of the sight line of beholder Z, make by the non-line-of-sight concentration zones B of display device 10 Send, fall into the intensity of the light in the sight line of beholder Z and sent by the sight line concentration zones A of display device 10, fallen into beholder Z Sight line in the intensity of light match, reduce and the picture that beholder Z is watched correspond respectively to sight line concentration zones A and non- Luminance difference between the region of sight line concentration zones B, thus improve the brightness uniformity of the picture that beholder Z is watched, and then Improve the viewing experience of beholder Z, bring truer, comfortable viewing experience to beholder Z.
In the above-described embodiments, display device 10 includes multiple R pixel 24, multiple G pixel 25 and multiple B pixel, grating Layer 30 includes: the R grating region 33 corresponding with R pixel 24, the G grating region 34 corresponding with G pixel 25, and corresponding with B pixel 26 B grating region 35.When setting the thickness of the grating projection 31 being positioned at the region corresponding with non-line-of-sight concentration zones B, R grating region 33, Being incident to the wavelength that wavelength X is HONGGUANG of the incident illumination of grating layer 30, the wavelength of HONGGUANG is 630nm；Setting is positioned at G grating region 34 During the thickness of the grating projection 31 region in corresponding with non-line-of-sight concentration zones B, it is incident to the wavelength X of the incident illumination of grating layer 30 For the wavelength of green glow, the wavelength of green glow is 550nm；Set and be positioned at the region corresponding with non-line-of-sight concentration zones B, B grating region 35 During the thickness of grating projection 31, being incident to the wavelength that wavelength X is blue light of the incident illumination of grating layer 30, the wavelength of blue light is 430nm。
The thickness h of the grating projection 31 corresponding with sight line concentration zones AAMeet:
h A = m A λ | n G A - n S A | - - - ( 3 )
Wherein, nGAFor the refractive index of the grating projection 31 corresponding with sight line concentration zones A, nSAFor with A pair, sight line concentration zones Should, the refractive index of implant in gap 32 between adjacent two grating projections 31, λ is the incidence being incident to grating layer 30 The wavelength of light, mAIt is the first constant, the first constant mAMeet:I=1,2,3,4....
In formula (3), the first constant mAMeet:I=1,2,3,4..., i.e. the first constant mANo Taking half-integer, now, 0 order diffraction that incident illumination obtains after there is diffraction in the sight line concentration zones A of grating layer 30 has not occurred The absolutely dry cancellation that relates to, and incident illumination in the sight line concentration zones A of grating layer 30, there is diffraction after obtain 0 order diffraction do not occurred Absolutely dry relate to the longest, say, that the thickness h of the grating projection 31 corresponding with sight line concentration zones ABWhen meeting formula (2), can adjust The intensity of the light of 0 order diffraction that joint incident illumination obtains after the grating layer 30 corresponding to sight line concentration zones A occurs diffraction, makes by showing The non-line-of-sight concentration zones B of showing device 10 sends, falls into the intensity of the light in the sight line of beholder Z and by the sight line of display device 10 Concentration zones A sends, falls into the intensity of the light in the sight line of beholder Z and matches, and reduces in the picture that beholder Z is watched and divides Not Dui Yingyu luminance difference between sight line concentration zones A and the region of non-line-of-sight concentration zones B, thus improve beholder Z and watched The brightness uniformity of picture, and then improve the viewing experience of beholder Z, bring truer, comfortable viewing to beholder Z Experience.
In the above-described embodiments, display device 10 includes multiple R pixel 24, multiple G pixel 25 and multiple B pixel, grating Layer 30 includes: the R grating region 33 corresponding with R pixel 24, the G grating region 34 corresponding with G pixel 25, and corresponding with B pixel 26 B grating region 35.When setting the thickness of the grating projection 31 being positioned at the region corresponding with sight line concentration zones A, R grating region 33, enter Being incident upon the wavelength that wavelength X is HONGGUANG of the incident illumination of grating layer 30, the wavelength of HONGGUANG is 630nm；Setting be positioned at G grating region 34 with During the thickness of the grating projection 31 in the region that sight line concentration zones A is corresponding, the wavelength X of the incident illumination being incident to grating layer 30 is green The wavelength of light, the wavelength of green glow is 550nm；The grating that setting is positioned at the region corresponding with sight line concentration zones A, B grating region 35 is convex When playing the thickness of 31, being incident to the wavelength that wavelength X is blue light of the incident illumination of grating layer 30, the wavelength of blue light is 430nm.
In above-described embodiment, the first constant mAValue can be integer, it is also possible to for non-integer, in actual applications, First constant mACan carry out value according to the actual requirements, such as, incident illumination is at the grating layer 30 corresponding to sight line concentration zones A Gain interest intensity and the incident illumination of 0 order diffraction obtained after penetrating after the grating layer 30 corresponding to non-line-of-sight concentration zones B occurs diffraction When the intensity difference of 1 order diffraction obtained is less, the first constant mACan be with round numbers, incident illumination is concentrated in the sight line of grating layer 30 0 order diffraction obtained after there is diffraction in district A interferes the longest, and now, incident illumination is in the sight line concentration zones A of grating layer 30 The intensity of the light of 0 order diffraction obtained after there is diffraction reaches maximum, or, the first constant mACan with negated integer, and first Constant mAValue near integer, such as, when i takes 1, and 0.5 ＜ mADuring ＜ 1, the first constant mAValue can be 0.85, 0.9 or 0.95 etc.；When i takes 1, and 1 ＜ mADuring ＜ 1.5, the first constant mAValue can be 1.05,1.1 or 1.15 Deng.
The intensity of 0 order diffraction that incident illumination obtains after the grating layer 30 corresponding to sight line concentration zones A occurs diffraction with enter Penetrate the intensity difference of 1 order diffraction that light obtains after the grating layer 30 corresponding to non-line-of-sight concentration zones B occurs diffraction bigger time, the One constant mACan not round numbers, and the first constant mAValue be preferably close to half-integer, the i.e. first constant mAValue meet:I=1,2,3,4..., or,I=1,2,3,4..., such as, when i takes 1, and 0.5 ＜ mADuring ＜ 1, the first constant mAValue can be 0.55,0.58 or 0.6 etc.；When i takes 1, and 1 ＜ mADuring ＜ 1.5, first Constant mAValue can be 1.4,1.43 or 1.46 etc..
By to the first constant mAValue be set, make incident illumination at the grating layer 30 corresponding to sight line concentration zones A Occur 0 order diffraction obtained after diffraction will not occur to interfere completely the longest, so that by the sight line concentration zones A of display device 10 Send, fall into the intensity of the light in the sight line of beholder Z and sent by the non-line-of-sight concentration zones B of display device 10, fallen into viewing The intensity of the light in the sight line of person Z matches.
In the above-described embodiments, corresponding to refractive index n of grating projection 31 of sight line concentration zones AGAWith corresponding to sight line collection Refractive index n of the implant in gap between middle district A, adjacent two grating projections 31SABetween there is difference, and nGAWith nSASize can according to reality application be set, such as, nGAWith nSARelation can meet: nGA＜ nSA, or, nGA＞ nSA.In this utility model embodiment, nGAWith nSARelation meet: nGA＞ nSA, such as, nGA=1.5, nSA=1, namely Saying, the refractive index of the material forming grating projection 31 is 1.5, is filled in the gap between adjacent two grating projection 31 The refractive index of implant is 1, when grating layer 30 is positioned at display floater 20 outside, be positioned at sight line concentration zones A, adjacent two Implant in individual grating projection 31 can be air.
In the above-described embodiments, corresponding to refractive index n of grating projection 31 of non-line-of-sight concentration zones BGBRegard with corresponding to non- Refractive index n of the implant in gap between line concentration zones B, adjacent two grating projections 31SBBetween there is difference, and nGAWith nSASize can according to reality application be set, such as, nGBWith nSBRelation can meet: nGB＜ nSB, or, nGB＞ nSB.In this utility model embodiment, nGBWith nSBRelation meet: nGB＞ nSB, such as, nGB=1.5, nSB=1, also That is, the refractive index of the material forming grating projection 31 is 1.5, is filled in the gap between adjacent two grating projection 31 In the refractive index of implant be 1, when grating layer 30 is positioned at display floater 20 outside, be positioned at non-line-of-sight concentration zones B, phase The adjacent implant in two grating projections 31 can be air.
In formula (2), work as nGB、nSBAfter determining with the value of λ, the second constant mBValue the biggest, with non-line-of-sight concentration zones B The thickness h of corresponding grating projection 31BThe biggest, during owing to making thicker grating projection 31, it usually needs spend more Technique and time, the preparation cost causing display device 10 is higher, and is unfavorable for the slimming design of display device 10.Therefore, In order to reduce the preparation cost of display device 10, and the slimming being easy to display device 10 designs, in this utility model embodiment In, the second constant mBMeet: mB=0.5, to reduce the thickness h of the grating projection 31 corresponding with non-line-of-sight concentration zones BB, thus drop The preparation cost of low display device 10, and it is easy to the slimming design of display device 10.
In formula (3), work as nGA、nSAAfter determining with the value of λ, the first constant mAValue the biggest, with A pair, sight line concentration zones The thickness h of the grating projection 31 answeredAThe biggest, during owing to making thicker grating projection 31, it usually needs spend more work Skill and time, the preparation cost causing display device 10 is higher, and is unfavorable for the slimming design of display device 10.Therefore, for Reduce the preparation cost of display device 10, and be easy to the slimming design of display device 10, in this utility model embodiment, First constant mAMeet: 0.5 ＜ mA＜ 1.5, and the first constant mAThe most satisfied: 0.5 ＜ mA≤ 1, to reduce and sight line concentration zones The thickness h of grating projection 31 corresponding for AA, thus reduce the preparation cost of display device 10, and it is easy to the slim of display device 10 Change design.
In the above-described embodiments, display device 10 includes multiple R pixel 24, multiple G pixel 25 and multiple B pixel, grating Layer 30 includes: the R grating region 33 corresponding with R pixel 24, the G grating region 34 corresponding with G pixel 25, and corresponding with B pixel 26 B grating region 35.
When setting the thickness of the grating projection 31 being positioned at the region corresponding with non-line-of-sight concentration zones B, R grating region 33, incident To the wavelength that wavelength X is HONGGUANG of the incident illumination of grating layer 30, the wavelength of HONGGUANG is 630nm, according to formula (2), when second is normal Number mBWhen being 0.5, and | nGB-nSB| when being 0.5, the grating being positioned at the region corresponding with non-line-of-sight concentration zones B, R grating region 33 is convex Play the thickness h of 31BRFor 630nm；Set the grating projection 31 being positioned at the region corresponding with non-line-of-sight concentration zones B, G grating region 34 Thickness time, be incident to the wavelength that wavelength X is green glow of the incident illumination of grating layer 30, the wavelength of green glow is 550nm, according to formula (2), as the second constant mBWhen being 0.5, and | nGB-nSB| when being 0.5, it is positioned at the district that G grating region 34 is corresponding with non-line-of-sight concentration zones B The thickness h of the grating projection 31 in territoryBGFor 630nm；Set and be positioned at the region that B grating region 35 is corresponding with non-line-of-sight concentration zones B The thickness of grating projection 31 time, be incident to the wavelength that wavelength X is blue light of the incident illumination of grating layer 30, the wavelength of blue light is 430nm, according to formula (2), as the second constant mBWhen being 0.5, and | nGB-nSB| when being 0.5, it is positioned at B grating region 35 and non-line-of-sight The thickness h of the grating projection 31 in the region that concentration zones B is correspondingBBFor 430nm.
Set the thickness h of the grating projection 31 being positioned at the region corresponding with sight line concentration zones A, R grating region 33ARTime, incident To the wavelength that wavelength X is HONGGUANG of the incident illumination of grating layer 30, the wavelength of HONGGUANG is 630nm, according to formula (3), when first is normal Number mAMeet: 0.5 ＜ mADuring ＜ 1.5, and | nGA-nSA| when being 0.5, it is positioned at the region that R grating region 33 is corresponding with sight line concentration zones A The thickness h of interior grating projection 31ARMeet: 315nm ＜ hAR＜ 945nm.In actual applications, incident illumination is corresponding to sight line The intensity of 0 order diffraction obtained after there is diffraction in the R grating region 33 of concentration zones A and incident illumination are corresponding to non-line-of-sight concentration zones When the intensity difference of 1 order diffraction obtained after there is diffraction in the R grating region 33 of B is less, it is positioned at R grating region 33 and concentrates with sight line The thickness h of the grating projection 31 in the region that district A is correspondingAR630nm can be taken, or, it is positioned at R grating region 33 and sight line concentration zones The thickness h of the grating projection 31 in the region that A is correspondingARValue close to 630nm, such as, be positioned at R grating region 33 and concentrate with sight line The thickness h of the grating projection 31 in the region that district A is correspondingARCan be 550nm, 580nm, 600nm, 650nm or 680nm etc.； The intensity of 0 order diffraction that incident illumination obtains after there is diffraction in the R grating region 33 corresponding to sight line concentration zones A exists with incident illumination When the intensity difference of 1 order diffraction corresponding to obtaining after there is diffraction in the R grating region 33 of non-line-of-sight concentration zones B is bigger, preferably Ground, is positioned at the thickness h of the grating projection 31 in the region corresponding with sight line concentration zones A, R grating region 33ARClose to 315nm, such as, It is positioned at the thickness h of the grating projection 31 in the region corresponding with sight line concentration zones A, R grating region 33ARCan be 330nm, 370nm or 400nm etc., or, it is positioned at the thickness h of the grating projection 31 in the region corresponding with sight line concentration zones A, R grating region 33ARClose 945nm, such as, is positioned at the thickness h of the grating projection 31 in the region corresponding with sight line concentration zones A, R grating region 33ARCan be 850nm, 900nm or 930nm etc..
Set the thickness h of the grating projection 31 being positioned at the region corresponding with sight line concentration zones A, G grating region 34AGTime, incident To the wavelength that wavelength X is green glow of the incident illumination of grating layer 30, the wavelength of green glow is 550nm, according to formula (3), when the first constant mAMeet: 0.5 ＜ mADuring ＜ 1.5, and | nGA-nSA| when being 0.5, it is positioned at the region that G grating region 34 is corresponding with sight line concentration zones A The thickness h of grating projection 31AGMeet: 275nm ＜ hAG＜ 825nm.In actual applications, incident illumination is corresponding to sight line collection The intensity of 0 order diffraction obtained after there is diffraction in the G grating region 34 of middle district A and incident illumination are corresponding to non-line-of-sight concentration zones B G grating region 34 in there is diffraction after the intensity difference of 1 order diffraction that obtains less time, be positioned at G grating region 34 and concentrate with sight line The thickness h of the grating projection 31 in the region that district A is correspondingAGDesirable 550nm, or, it is positioned at G grating region 34 and sight line concentration zones A The thickness h of the corresponding grating projection 31 in regionAGValue close to 550nm, such as, be positioned at G grating region 34 and concentrate with sight line The thickness h of the grating projection 31 in the region that district A is correspondingAGCan be 500nm, 530nm, 580nm or 600nm etc.；Incident illumination The intensity of 0 order diffraction obtained after there is diffraction in the G grating region 34 corresponding to sight line concentration zones A is corresponding to incident illumination When the intensity difference of 1 order diffraction obtained after there is diffraction in the G grating region 34 of non-line-of-sight concentration zones B is bigger, it is preferable that be positioned at The thickness h of the grating projection 31 in the region that G grating region 34 is corresponding with sight line concentration zones AAGClose to 275nm, such as, G light it is positioned at The thickness h of the grating projection 31 in the region that grid region 34 is corresponding with sight line concentration zones AAGCan be 300nm, 320nm or 350nm Deng, or, it is positioned at the thickness h of the grating projection 31 in the region corresponding with sight line concentration zones A, G grating region 34AGClose to 825nm, Such as, the thickness h of the grating projection 31 in the region corresponding with sight line concentration zones A, G grating region 34 it is positioned atAGCan be 800nm, 760nm or 730nm etc..
Set the thickness h of the grating projection 31 being positioned at the region corresponding with sight line concentration zones A, B grating region 35ABTime, incident To the wavelength that wavelength X is blue light of the incident illumination of grating layer 30, the wavelength of blue light is 430nm, according to formula (3), when the first constant mAMeet: 0.5 ＜ mADuring ＜ 1.5, and | nGA-nSA| when being 0.5, it is positioned at the region that B grating region 35 is corresponding with sight line concentration zones A The thickness h of grating projection 31ABMeet: 215nm ＜ hAB＜ 645nm.In actual applications, incident illumination is corresponding to sight line collection The intensity of 0 order diffraction obtained after there is diffraction in the B grating region 35 of middle district A and incident illumination are corresponding to non-line-of-sight concentration zones B B grating region 35 in there is diffraction after the intensity difference of 1 order diffraction that obtains less time, be positioned at B grating region 35 and concentrate with sight line The thickness h of the grating projection 31 in the region that district A is correspondingABDesirable 430nm, or, it is positioned at B grating region 35 and sight line concentration zones A The thickness h of the corresponding grating projection 31 in regionABValue close to 430nm, such as, be positioned at B grating region 35 and concentrate with sight line The thickness h of the grating projection 31 in the region that district A is correspondingABCan be 350nm, 380nm, 480nm or 500nm etc.；Incident illumination The intensity of 0 order diffraction obtained after there is diffraction in the B grating region 35 corresponding to sight line concentration zones A is corresponding to incident illumination When the intensity difference of 1 order diffraction obtained after there is diffraction in the B grating region 35 of non-line-of-sight concentration zones B is bigger, it is preferable that be positioned at The thickness h of the grating projection 31 in the region that B grating region 35 is corresponding with sight line concentration zones AABClose to 215nm, such as, B light it is positioned at The thickness h of the grating projection 31 in the region that grid region 35 is corresponding with sight line concentration zones AABCan be 250nm, 280nm or 300nm Deng, or, it is positioned at the thickness h of the grating projection 31 in the region corresponding with sight line concentration zones A, B grating region 35ABClose to 645nm, Such as, the thickness h of the grating projection 31 in the region corresponding with sight line concentration zones A, B grating region 35 it is positioned atABCan be 620nm, 600nm or 550nm etc..
In the above-described embodiments, by the screen periods of grating layer 30 regional is set, grating layer 30 is made Screen periods is gradually reduced to the edge of display device 10 by the center a of sight line concentration zones A, so that being regarded by the non-of display device 10 The light that line concentration zones B sends can be towards the sight line deviation of beholder Z, it is achieved to going out of the non-line-of-sight concentration zones B of display device 10 The regulation of light direction, increase is sent by the non-line-of-sight concentration zones B of display device 10, is fallen into the light of the light in the sight line of beholder Z Line quantity and intensity；By the thickness of the grating projection 31 of grating layer 30 regional is set, make incident illumination in correspondence The non-zero order diffraction (such as 1 order diffraction) obtained after the grating layer 30 of non-line-of-sight concentration zones B occurs diffraction interferes the longest, Increase the intensity of the non-zero order diffraction that incident illumination obtains after the grating layer 30 corresponding to non-line-of-sight concentration zones B occurs diffraction, and then Increase is sent by the non-line-of-sight concentration zones B of display device 10, is fallen into the intensity of the light in the sight line of beholder Z.Therefore, by right The screen periods of grating layer 30 regional and the thickness of grating projection 31 are set respectively, it is possible to achieve make by display device The non-line-of-sight concentration zones B of 10 sends, falls into the amount of light of the light in the sight line of beholder Z and by the sight line collection of display device 10 Middle district A sends, falls into the amount of light of the light in the sight line of beholder Z and matches, and makes to be concentrated by the non-line-of-sight of display device 10 District B sends, falls into the intensity of the light in the sight line of beholder Z and sent by the sight line concentration zones A of display device 10, fallen into viewing The intensity of the light in the sight line of person Z matches.
In actual applications, refer to Figure 18 and Figure 19, when the screen periods of grating layer 30 is 3 μm, the light of grating layer 30 When the thickness of grid projection 31 is 500nm, it is incident to 0 grade that the incident illumination of grating layer 30 obtains after grating layer 30 occurs diffraction and spreads out Shown in relation Figure 18 between light extraction efficiency and the grating dutycycle penetrated, it is incident to the incident illumination of grating layer 30 grating layer 30 The relation between light extraction efficiency and the grating dutycycle of 1 order diffraction obtained after penetrating that gains interest is as shown in figure 19, as shown in Figure 18, right For 0 order diffraction, when grating dutycycle is 0.5, the intensity of 0 order diffraction is minimum, and when grating dutycycle is less than 0.5,0 grade is spread out The intensity penetrated reduces along with the increase of grating dutycycle, and when grating dutycycle is more than 0.5, the intensity of 0 order diffraction is along with grating The increase of dutycycle and increase；It appears from figure 19 that for 1 order diffraction, when grating dutycycle is 0.5, the intensity of 1 order diffraction Maximum, and when grating dutycycle is less than 0.5, the intensity of 1 order diffraction increases, grating dutycycle along with the increase of grating dutycycle During more than 0.5, the intensity of 1 order diffraction reduces along with the increase of grating dutycycle.
It is to say, by the intensity of the light sent in display device 10 regional also with the grating dutycycle of grating layer 30 Relevant, and according to above-mentioned conclusion, can be by grating layer 30 being corresponded respectively to sight line concentration zones A's and non-line-of-sight concentration zones B The grating dutycycle in region is set, and at the grating layer 30 corresponding to non-line-of-sight concentration zones B, diffraction occurs increasing incident illumination The intensity of the non-zero order diffraction of rear acquisition, so increase sent by the non-line-of-sight concentration zones B of display device 10, fallen into beholder Z's The intensity of the light in sight line, and when necessary, suitably reduce incident illumination and spread out at the grating layer 30 corresponding to sight line concentration zones A The intensity of 0 order diffraction obtained after penetrating, and then suitably reduction is sent by the sight line concentration zones A of display device 10, is fallen into beholder Z Sight line in the intensity of light, thus make further to be sent by the non-line-of-sight concentration zones B of display device 10, fallen into beholder Z's The intensity of the light in sight line and sent, fallen into beholder Z by the sight line concentration zones A of display device 10 sight line in the intensity of light Match.
Specifically, in the region corresponding with sight line concentration zones A, grating dutycycle dc of grating layer 30AMeet: 0.2≤dcA ≤0.8；In the region corresponding with non-line-of-sight concentration zones B, grating dutycycle dc of grating layer 30BIt is 0.5.When being embodied as, with In the region that sight line concentration zones A is corresponding, the grating dutycycle of R grating region 33, the grating dutycycle of G grating region 34, B grating region 34 Grating dutycycle be respectively positioned between 0.2 to 0.8, in the region corresponding with non-line-of-sight concentration zones B, the grating of R grating region 33 accounts for Empty ratio, the grating dutycycle of G grating region 34, the grating dutycycle of B grating region 34 are 0.5.
In this utility model embodiment, in the region corresponding with non-line-of-sight concentration zones B, the grating dutycycle of grating layer 30 dcBIt is set as 0.5, thus in the region corresponding with non-line-of-sight concentration zones B, the screen periods of grating layer 30 and the light of grating layer 30 Thickness one timing of grid projection 31, obtain after the grating layer 30 corresponding with non-line-of-sight concentration zones B occurs diffraction 1 grade of incident illumination The maximum intensity of diffraction so that sent, fallen into the light tool in the sight line of beholder Z by the non-line-of-sight concentration zones B of display device 10 There is higher intensity, such that it is able to make to be sent by the non-line-of-sight concentration zones B of display device 10, fallen in the sight line of beholder Z The intensity of light matches with the intensity of the light in the sight line being sent, being fallen into beholder Z by the sight line concentration zones A of display device 10.
In this utility model embodiment, in the region corresponding with sight line concentration zones A, the grating dutycycle of grating layer 30 dcAMeet: 0.2≤dcA≤ 0.8, in actual applications, in the region corresponding with sight line concentration zones A, the grating of grating layer 30 accounts for Sky compares dcAValue can be set according to actual needs, such as, sent by the non-line-of-sight concentration zones B of display device 10, fallen Enter the intensity of the light in the sight line of beholder Z and the sight line being sent, being fallen into beholder Z by the sight line concentration zones A of display device 10 When the intensity difference of interior light is bigger, then can make grating dutycycle dc of the grating layer 30 corresponding with sight line concentration zones AATake Value is 0.5, now, and the screen periods of the grating layer 30 corresponding with sight line concentration zones A and the thickness of the grating projection 31 of grating layer 30 Degree one timing, the intensity of 0 order diffraction that incident illumination obtains after the grating layer 30 corresponding with sight line concentration zones A occurs diffraction is Little, thus can suitably reduce by 0 order diffraction that incident illumination obtains after the grating layer 30 corresponding with sight line concentration zones A occurs diffraction Intensity, such that it is able to make to be sent by the non-line-of-sight concentration zones B of display device 10, fallen into the strong of the light in the sight line of beholder Z Spend the intensity with the light in the sight line being sent, being fallen into beholder Z by the sight line concentration zones A of display device 10 to match；By showing The non-line-of-sight concentration zones B of device 10 sends, falls into the intensity of the light in the sight line of beholder Z and by the sight line collection of display device 10 Middle district A send, fall into the light in the sight line of beholder Z intensity difference less time, then can make corresponding with sight line concentration zones A Grating dutycycle dc of grating layer 30AMeet: 0.2≤dcA＜ 0.5, or, 0.5 ＜ dcA≤ 0.8, such as, the light of grating layer 30 Grid dutycycle dcAValue can be 0.2,0.3,0.4,0.6,0.7 or 0.8, now, the grating corresponding with sight line concentration zones A Thickness one timing of the screen periods of layer 30 and the grating projection 31 of grating layer 30, incident illumination is corresponding with sight line concentration zones A The intensity of 0 order diffraction that grating layer 30 obtains after there is diffraction is not at minimum, and incident illumination is corresponding with sight line concentration zones A Grating layer 30 occur the intensity of 0 order diffraction that obtains after diffraction not also in maximum, thus can make by display device 10 non- Sight line concentration zones B sends, falls into the intensity of the light in the sight line of beholder Z and sent by the sight line concentration zones A of display device 10, The intensity falling into the light in the sight line of beholder Z matches.
In the above-described embodiments, display device 10 is the setting of grating layer 30 in liquid crystal indicator, and display device 10 In mode uses mode one, and the region corresponding with non-line-of-sight concentration zones B, the thickness h of the grating projection 31 of R grating region 33BRFor The thickness h of the grating projection 31 of 630nm, G grating region 34BGThickness h for the grating projection 31 of 550nm, B grating region 33BBFor In 430nm, and the region corresponding with non-line-of-sight concentration zones B, grating dutycycle dc of grating layer 30BIt is 0.5, when grating layer 30 In the light emission side of the color film layer of display floater 20, and grating layer 30 contacts with color film layer, through calculation, with non-line-of-sight concentration zones B In corresponding region, the light extraction efficiency of 1 order diffraction that incident illumination obtains after grating layer 30 occurs diffraction and the pass of screen periods System as it is shown in figure 9, it can be seen in figure 9 that in the B of non-line-of-sight concentration zones, 1 order diffraction corresponding with R grating region 33 go out light efficiency Light extraction efficiency (the curve q10 and curve q10 ' of 1 order diffraction that rate (shown in curve q9 and curve q9 ') is corresponding with G grating region 34 Shown in) light extraction efficiency (shown in curve q11 and curve q11 ') of 1 order diffraction corresponding with B grating region 35 is basically unchanged, with R light 1 grade corresponding with B grating region 35 of the intensity of 1 order diffraction that the intensity of 1 order diffraction of grid region 33 correspondence is corresponding with G grating region 34 The intensity of diffraction is not all suppressed；In the region corresponding with non-line-of-sight concentration zones B, incident illumination obtains after grating layer 30 occurs diffraction 0 order diffraction light extraction efficiency and screen periods relation as shown in Figure 10, it can be seen from fig. 10 that non-line-of-sight concentration zones In B, light extraction efficiency (shown in curve q12 and curve q12 ') and the G grating region to 0 order diffraction corresponding with R grating region 33 respectively Going out of 0 order diffraction that the light extraction efficiency of 0 order diffraction of 34 correspondences (shown in curve q13 and curve q13 ') is corresponding with B grating region 35 The inhibition of light efficiency (shown in curve q14 and curve q14 ') is more apparent.
Finding out from Fig. 9 and Figure 10, in the region corresponding with non-line-of-sight concentration zones B, 0 grade corresponding with R grating region 33 is spread out The intensity of 0 order diffraction that the intensity of 0 order diffraction that the intensity penetrated is corresponding with G grating region 34 is corresponding with B grating region 35 exists respectively It is suppressed to a certain extent, and the intensity of 1 order diffraction corresponding with R grating region 33 1 order diffraction corresponding with G grating region 34 The intensity of 1 order diffraction that intensity is corresponding with B grating region 35 increases respectively.
In Fig. 9, curve q9, curve q10 and curve q11 being respectively provided with fluctuation, these fluctuations are owing to monochromatic light is at light Gate layer 30 occurs caused by the resonance of Prague, and these fluctuations become the light time spectrum with one fixed width, these ripples at monochromatic light Move and can be cut down or eliminate, in actual applications, it is also possible to use alternate manner that these fluctuations are cut down or eliminated, example As, the cross sectional shape of the grating projection 31 of grating layer 30 can be designed as step, triangle or trapezoidal, these to be fluctuated Cut down or eliminate.
In above-described embodiment, grating projection 31 can be that transparent grating is protruding, it is also possible to protruding for nontransparent grating, and light The material of grid projection 31 can have multiple choices.In this utility model embodiment, grating protruding 31 is that transparent grating is protruding, and Grating protruding 31 is that polymethyl methacrylate grating is protruding.
Referring to Figure 20 to Figure 25, the cross sectional shape of grating projection 31 is step, trapezoidal or triangle.
Such as, referring to Figure 20 and Figure 21, grating layer 30 includes multiple grating projection 31, two adjacent grating projections 31 Between there is gap 32, the bearing of trend in the gap 32 that grating projection 31 is perpendicular between adjacent two grating projection 31 After plane is blocked, it is thus achieved that the cross sectional shape of grating projection 31 be step.In actual applications, as shown in figure 21, Ke Yishi The wherein side in the cross section of grating projection 31 is step, or, as shown in figure 20, it is also possible to be the cross section of grating projection 31 Both sides are step, and when the both sides in the cross section of grating projection 31 are step, the both sides in the cross section of grating projection 31 The center line of the step incidence surface that can be perpendicular to grating projection 31 on the cross section of grating projection 31 relatively symmetrical, grating is protruding The step of the both sides in the cross section of 31 can be perpendicular in the incidence surface of grating projection 31 on the cross section of grating projection 31 relatively Line is asymmetric.
Referring to Figure 22 and Figure 23, grating layer 30 includes multiple grating projection 31, between two adjacent grating projections 31 There is gap 32, the plane of the bearing of trend in the gap 32 that grating projection 31 is perpendicular between adjacent two grating projection 31 After blocking, it is thus achieved that the cross sectional shape of grating projection 31 be triangle.In actual applications, as shown in figure 22, grating projection 31 The center line of the both sides in the cross section incidence surface that can be perpendicular to grating projection 31 on the cross section of grating projection 31 relatively symmetrical, this Time, the cross sectional shape of grating projection 31 is isosceles triangle, or, as shown in figure 23, the both sides in the cross section of grating projection 31 can The center line of the incidence surface to be perpendicular to grating projection 31 on the cross section of relative grating projection 31 is asymmetric.
Referring to Figure 24 and Figure 25, grating layer 30 includes multiple grating projection 31, between two adjacent grating projections 31 There is gap 32, the plane of the bearing of trend in the gap 32 that grating projection 31 is perpendicular between adjacent two grating projection 31 After blocking, it is thus achieved that the cross sectional shape of grating projection 31 be trapezoidal.In actual applications, as shown in figure 24, grating projection 31 The center line of the incidence surface that the both sides in cross section can be perpendicular to grating projection 31 on the cross section of grating projection 31 relatively is symmetrical, now, The cross sectional shape of grating projection 31 is isosceles trapezoid, or, as shown in figure 25, the both sides in the cross section of grating projection 31 can be relative The center line of the incidence surface being perpendicular to grating projection 31 on the cross section of grating projection 31 is asymmetric.
Owing to the cross sectional shape of grating projection 31 is step, trapezoidal or triangle, thus each grating projection 31 Exiting surface is not parallel with the incidence surface of this grating projection 31, when being incident to the incident illumination of grating layer 30 through grating layer 30, incident There is repeatedly diffraction at grating layer 30 and repeatedly interfere in light, adds incident illumination in grating layer 30 diffraction and the effect of interference, add The regulating power of the light direction of the strong regional to display device 10 so that the light that the regional of display device 10 sends In fall into the intensity of the light in the sight line of beholder Z and match so that the light that the regional of display device 10 sends falls into The amount of light of the light in the sight line of beholder Z matches, for example, it is possible to eliminate to a certain extent or cut down Fig. 9 and Figure 10 In fluctuation on each curve, reduce bright district and the luminance difference in details in a play not acted out on stage, but told through dialogues district of the picture that beholder Z is watched, thus improve sight The brightness uniformity of the picture that the person of seeing Z is watched, and then improve the viewing experience of beholder Z, bring trueer to beholder Z Real, comfortable viewing experience, meanwhile, preferably can be controlled, improve display in propagation to the light in display device 10 The control effect that the propagation of the light in device 10 is controlled.
It is noted that when the both sides in the cross section of grating projection 31 are asymmetric relative to the center line in the cross section of grating projection 31 Time, when being incident to the incident illumination of grating layer 30 through grating layer 30, there is diffraction and interference at grating layer 30 in incident illumination, it is thus achieved that The angle of diffraction of k order diffraction is asymmetric relative to 0 order diffraction with intensity, convex relative to grating by the both sides making the cross section of grating projection 31 The center line in the cross section playing 31 is asymmetric so that the k order diffraction of the sight line outgoing of beholder Z dorsad interferes cancellation, and towards viewing The k order diffraction of the sight line outgoing of person Z is interfered the longest, such that it is able to increase the strong of the k order diffraction of the sight line outgoing towards beholder Z Degree, strengthens the regulating power of the light direction of the regional to display device 10 so that the regional of display device 10 is sent out The intensity falling into the light in the sight line of beholder Z in the light gone out matches, and reduces the bright district of the picture that beholder Z is watched With the luminance difference in details in a play not acted out on stage, but told through dialogues district, thus improve the brightness uniformity of the picture that beholder Z is watched, and then improve beholder Z's Viewing experience, brings truer, comfortable viewing experience to beholder Z, meanwhile, and can be preferably in display device 10 The propagation of light is controlled, and improves the control effect that the propagation to the light in display device 10 is controlled.
Referring to Fig. 3, display floater 20 includes color film layer 23, and grating layer 30 is positioned at the light emission side of color film layer 23 or color film layer The incident side of 23.Such as, as it is shown on figure 3, display floater 20 includes first substrate 21, second substrate 22 and color film layer 23, first Substrate 21 is oppositely arranged with second substrate 22, and color film layer 23 is between first substrate 21 and second substrate 22；In Fig. 3 downward Direction is the light direction of display floater 20, and Fig. 3 prizes the incident side that the upside of film layer 23 is color film layer 23, and Fig. 3 prizes film layer The downside of 23 is the light emission side of color film layer 23；Grating layer 30 may be located at the light emission side of color film layer 23, and such as, grating layer 30 is permissible Between color film layer 23 and second substrate 22, or, grating layer 30 may be located at the side of second substrate 22 color film layer 23 dorsad On face；Or, grating layer 30 may be located at the incident side of color film layer 23, and such as, grating layer 30 may be located at color film layer 23 and the Between one substrate 22, or, grating layer 30 may be located on the side of first substrate 21 color film layer 23 dorsad.
Please continue to refer to Fig. 3, in this utility model embodiment, grating layer 30 is positioned at the light emission side of color film layer 23, and light Gate layer 30 contacts with color film layer 23.Specifically, as it is shown on figure 3, display floater 20 includes first substrate 21, second substrate 22 and coloured silk Film layer 23, first substrate 21 is oppositely arranged with second substrate 22, and color film layer 23 is between first substrate 21 and second substrate 22； Grating layer 30 is between color film layer 23 and second substrate 22, and grating layer 30 contacts with color film layer 23.It is so designed that, is incident to The incident illumination of grating layer 30 is the emergent light of color film layer 23, owing to grating layer 30 contacts with color film layer 23, thus color film layer 23 Emergent light will not occur mixed light before being incident to grating layer 30, thus is possible to prevent because of the emergent light generation mixed light of color film layer 23 Cause grating layer 30 that the control effect of the propagation of the light in display device 10 is reduced.
In above-described embodiment, grating layer 30 can be arranged on the outside of display floater 20, and such as, display device 10 is liquid crystal Display device, display device 10 includes backlight and the display floater 20 of the light emission side being positioned at backlight, and backlight is display surface Plate 20 provides area source；Grating layer 30 can be arranged on the light emission side of backlight, and grating layer 30 contacts with backlight, backlight The area source provided is incident in display floater 20 after grating layer 30.
Please continue to refer to Fig. 3, the display device 10 that this utility model embodiment provides also includes light-diffusing films 40, light scattering Film 40 is positioned at the light emission side of display floater 20, and light-diffusing films 40 is positioned at the light emission side of grating layer 30.Such as, display device 10 is wrapped Including display floater 20, grating layer 30 and light-diffusing films 40, display floater 20 includes first substrate 21, second substrate 22 and color film layer 23, first substrate 21 is oppositely arranged with second substrate 22, and color film layer 23, between first substrate 21 and second substrate 22, shows The light emission side of panel 20 is the side of second substrate 22 first substrate 21 dorsad；Grating layer 30 is positioned at color film layer 23 and second substrate Between 22, and grating layer 30 contacts with color film layer 23；Light-diffusing films 40 is positioned at the side of second substrate 22 first substrate 21 dorsad On.The setting of light-diffusing films 40, preferably can be adjusted, improve display device 10 in propagation to the light in display device 10 The visual effect of shown picture.
The display device 10 that above-described embodiment provides can be non-virtual display device, and such as, display device 10 is common Flat display apparatus or curved-surface display device, now, the mist degree of light-diffusing films 40 equal to or more than 10%；Above-described embodiment carries The display device 10 of confession can also be virtual display device, such as, display device 10 be 3D display device, nearly eye display device or AR/VR display device, now, the mist degree of light-diffusing films 40 equals to or less than 10%.
When preparing the display device 10 that above-described embodiment provides, the preparation method of grating layer 30 can have multiple, such as, Grating layer 30 can use nano-imprint process or laser interference technique to prepare.
In the description of above-mentioned embodiment, specific features, structure, material or feature can be at any one or many Individual embodiment or example combine in an appropriate manner.
The above, detailed description of the invention the most of the present utility model, but protection domain of the present utility model does not limit to In this, any those familiar with the art, in the technical scope that this utility model discloses, can readily occur in change Or replace, all should contain within protection domain of the present utility model.Therefore, protection domain of the present utility model should be with described power The protection domain that profit requires is as the criterion.

Claims (20)

1. a display device, it is characterised in that including: display floater, and it is arranged on inside or the institute of described display floater State the grating layer of the outside of display floater；
The direction of the non-line-of-sight concentration zones of described display device is pointed at center along the sight line concentration zones of described display device, described The screen periods of grating layer is gradually reduced, and is incident to the incident illumination of described grating layer in described grating layer and described display device Occur after diffraction in the region that non-line-of-sight concentration zones is corresponding, it is thus achieved that the light of non-zero order diffraction fall into the sight line of beholder.
Display device the most according to claim 1, it is characterised in that described display device includes multiple R pixel, multiple G Pixel and multiple B pixel, described grating layer includes: the R grating region corresponding with described R pixel, the G light corresponding with described G pixel Grid region, and the B grating region corresponding with described B pixel；
The center of described sight line concentration zones is corresponding with the center of described display device, horizontal, by described along described display device The center of display device to the both sides of described display device, the screen periods of described R grating region, described G grating region grating week The screen periods of phase and described B grating region is all gradually reduced.
Display device the most according to claim 2, it is characterised in that horizontal along described display device, described display dress Put and include multiple R pixel column, multiple G pixel column and multiple B pixel column, described R pixel column, described G pixel column and described B pixel Alternately, described R pixel column is formed row by the multiple described R pixel of the longitudinal arrangement along described display device, described G pixel Row are formed by the multiple described G pixel of the longitudinal arrangement along described display device, and described B pixel column is by along described display device The multiple described B pixel of longitudinal arrangement is formed；
Described grating layer includes that multiple grating is protruding, and described grating projection is that strip grating is protruding, and described grating is protruding along institute State the longitudinal extension of display device, the protruding horizontally-parallel arrangement along described display device of multiple described gratings.
Display device the most according to claim 1, it is characterised in that described display device includes multiple R pixel, multiple G Pixel and multiple B pixel, described grating layer includes: the R grating region corresponding with described R pixel, the G light corresponding with described G pixel Grid region, and the B grating region corresponding with described B pixel；
The center of described sight line concentration zones is corresponding with the center of described display device, along the longitudinal direction of described display device, by described The center of display device to the both sides of described display device, the screen periods of described R grating region, described G grating region grating week The screen periods of phase and described B grating region is all gradually reduced.
Display device the most according to claim 4, it is characterised in that along the longitudinal direction of described display device, described display fills Put and include multiple R pixel column, multiple G pixel column and multiple B pixel column, described R pixel column, described G pixel column and described B pixel Alternately, described R pixel column is formed row by the transversely arranged multiple described R pixel along described display device, described G pixel Row is formed by the transversely arranged multiple described G pixel along described display device, and described B pixel column is by along described display device Transversely arranged multiple described B pixel is formed；
Described grating layer includes that multiple grating is protruding, and described grating projection is that strip grating is protruding, and described grating is protruding along institute State the horizontal expansion of display device, the protruding parallel longitudinal arrangement along described display device of multiple described gratings.
Display device the most according to claim 1, it is characterised in that it is multiple that described display device includes being arranged in array R pixel, multiple G pixel and multiple B pixel, described grating layer includes: the R grating region corresponding with described R pixel, with described G picture The G grating region that element is corresponding, and the B grating region corresponding with described B pixel；
The center of described sight line concentration zones is corresponding with the center of described display device, along the longitudinal direction of described display device, by institute State the center of display device to the both sides of described display device, the screen periods of described R grating region, the grating of described G grating region The screen periods of cycle and described B grating region is all gradually reduced；Horizontal, by described display device along described display device Center to the both sides of described display device, the screen periods of described R grating region, the screen periods of described G grating region and described B light The screen periods in grid region is all gradually reduced.
Display device the most according to claim 1, it is characterised in that described grating layer includes that multiple grating is protruding, with institute State the thickness h that described grating corresponding to sight line concentration zones is protrudingAMeet:
Wherein, nGAFor the refractive index that the described grating corresponding with described sight line concentration zones is protruding, nSAFor with described sight line concentration zones The refractive index of corresponding, the adjacent implant in the gap between two described grating projections, λ is to be incident to described grating layer The wavelength of incident illumination, mAIt is the first constant, and described first constant mAMeet:
The thickness h that the described grating corresponding with described non-line-of-sight concentration zones is protrudingBMeet:
Wherein, nGBFor the refractive index that corresponding with described non-line-of-sight concentration zones described grating is protruding, nSBFor with described non-line-of-sight The refractive index of the implant in gap between two described grating projections that concentration zones is corresponding, adjacent, λ is for being incident to described light The wavelength of the incident illumination of gate layer, mBIt is the second constant, and described second constant mBMeet:。
Display device the most according to claim 7, it is characterised in that nGA＞ nSA；nGB＞ nSB。
Display device the most according to claim 8, it is characterised in that nGA=nGB=1.5, nSA=nSB=1.
Display device the most according to claim 7, it is characterised in that 0.5 ＜ mA＜ 1.5；mB=0.5.
11. display devices according to claim 7, it is characterised in that described display device includes in array distribution many Individual R pixel, multiple G pixel and multiple B pixel, described grating layer includes: the R grating region corresponding with described R sub-pixel, with described The G grating region that G sub-pixel is corresponding, and the B grating region corresponding with described B sub-pixel；
In the region corresponding with described non-line-of-sight concentration zones, the thickness h that the grating in described R grating region is protrudingBRFor 630nm, institute State the thickness h that the grating of G grating region is protrudingBGFor 550nm, the thickness h that the grating of described B grating region is protrudingBBFor 430nm；
In the region corresponding with described sight line concentration zones, the thickness h that the grating in described R grating region is protrudingARMeet: 315nm ＜ hAR＜ 945nm, the thickness h that the grating of described G grating region is protrudingAGMeet: 275nm ＜ hAG＜ 825nm, the light of described B grating region The thickness h that grid are protrudingABMeet: 215nm ＜ hAB＜ 645nm.
12. display devices according to claim 1, it is characterised in that in the region corresponding with described sight line concentration zones, Grating dutycycle dc of described grating layerAMeet: 0.2≤dcA≤0.8；
In the region corresponding with described non-line-of-sight concentration zones, grating dutycycle dc of described grating layerBIt is 0.5.
13. display devices according to claim 1, it is characterised in that be incident to the incidence of the incident illumination of described grating layer Angle is 0 °.
14. display devices according to claim 1, it is characterised in that the grating projection of shown grating layer is transparent grating Protruding.
15. display devices according to claim 14, it is characterised in that the grating projection of described grating layer is poly-methyl-prop E pioic acid methyl ester grating is protruding.
16. display devices according to claim 1, it is characterised in that the cross sectional shape that the grating of described grating layer is protruding For step, trapezoidal or triangle.
17. display devices according to claim 1, it is characterised in that described display floater includes color film layer, described grating Layer is positioned at the light emission side of described color film layer, and described grating layer contacts with described color film layer.
18. display devices according to claim 1, it is characterised in that shown display device also includes backlight, the described back of the body Light source is positioned at the incident side of described display floater；Shown in grating layer be positioned at the light emission side of described backlight, and described grating layer with Described backlight contacts.
19. display devices according to claim 1, it is characterised in that described display device also includes light-diffusing films, described Light-diffusing films is positioned at the light emission side of described display floater, and described light-diffusing films is positioned at the light emission side of described grating layer.
20. display devices according to claim 19, it is characterised in that described display device is non-virtual display device, The mist degree of described light-diffusing films equals to or more than 10%；
Described display device is virtual display device, and the mist degree of described light-diffusing films equals to or less than 10%.
CN201620642344.7U 2016-06-24 2016-06-24 A kind of display device Withdrawn - After Issue CN205722621U (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105911711A (en) * 2016-06-24 2016-08-31 京东方科技集团股份有限公司 Display device
WO2017219760A1 (en) * 2016-06-24 2017-12-28 京东方科技集团股份有限公司 Display device
CN111463251A (en) * 2020-04-15 2020-07-28 山东傲晟智能科技有限公司 Display screen and electronic equipment thereof
CN112331071A (en) * 2020-10-23 2021-02-05 云谷（固安）科技有限公司 Light field modulation assembly, display assembly and display device

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105911711A (en) * 2016-06-24 2016-08-31 京东方科技集团股份有限公司 Display device
WO2017219866A1 (en) * 2016-06-24 2017-12-28 京东方科技集团股份有限公司 Display device
WO2017219760A1 (en) * 2016-06-24 2017-12-28 京东方科技集团股份有限公司 Display device
CN105911711B (en) * 2016-06-24 2019-03-15 京东方科技集团股份有限公司 A kind of display device
US10267961B2 (en) 2016-06-24 2019-04-23 Boe Technology Group Co., Ltd. Display device
US10712482B2 (en) 2016-06-24 2020-07-14 Boe Technology Group Co., Ltd. Display device
CN111463251A (en) * 2020-04-15 2020-07-28 山东傲晟智能科技有限公司 Display screen and electronic equipment thereof
CN111463251B (en) * 2020-04-15 2022-07-05 深圳富创通科技有限公司 Display screen and electronic equipment thereof
CN112331071A (en) * 2020-10-23 2021-02-05 云谷（固安）科技有限公司 Light field modulation assembly, display assembly and display device

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