CN109164636A - A kind of display device - Google Patents
A kind of display device Download PDFInfo
- Publication number
- CN109164636A CN109164636A CN201811147699.9A CN201811147699A CN109164636A CN 109164636 A CN109164636 A CN 109164636A CN 201811147699 A CN201811147699 A CN 201811147699A CN 109164636 A CN109164636 A CN 109164636A
- Authority
- CN
- China
- Prior art keywords
- light
- display device
- visual field
- guide plate
- display
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/017—Head mounted
- G02B27/0172—Head mounted characterised by optical features
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/0101—Head-up displays characterised by optical features
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133615—Edge-illuminating devices, i.e. illuminating from the side
Abstract
The embodiment of the present application provides a kind of display device, including backlight module and display screen, backlight module includes Light-emitting diode LED and light guide plate, light micro-structure is provided with out on light guide plate, the setting position of light micro-structure is corresponding with visual field the first pixel region position of display screen out, the light of LED reaches the first pixel region of visual field by going out light micro-structure, reduces the waste of light energy.
Description
This application claims on 08 15th, 2018 submission Patent Office of the People's Republic of China, application No. is 201810930320.5, application
The application is hereby incorporated by reference in a kind of priority of the Chinese patent application of entitled " method that VR is shown ", entire contents
In.
Technical field
This application involves field of virtual reality more particularly to the display sides a kind of Virtual Realization (virtual reality, VR)
Method and VR display device.
Background technique
VR display device started to move towards consumption meat market in 2016.Display in VR display device is fixed on user's
Head shows two images to two eyes respectively using two displays.Image in the two displays is by display chip point
It does not drive, there is tiny difference, be similar to binocular parallax.Display generates an amplification virtual image through eyeglass and carrys out simulating realistic generation
Boundary.When head is toward when moving left, display shows that an animation by moving from left to right, emulation human eye are seen in real world
The variation of visual.However traditional liquid crystal display (liquid crystal display, LCD) shows that a high speed is moved
Dynamic animation has serious smear, causes user to lead to the problem of dizzy nausea, in order to solve this problem, begins to use and take
Fast reaction liquid crystal display (fast LCD) with backlight black insertion technology.
VR display device simulates human eye, through eyes after eyeglass it is seen that an approximate circle visual field (field of
Area, FoV), and the active region (active area, AA) of fast reaction liquid crystal display is usually rectangular, so in AA
Pixel can not be all seen in visual field, as shown in Figure 1, causing the waste of pixel, and to fast reaction liquid crystal display
For, also result in the waste of backlight module light energy.
Summary of the invention
The embodiment of the present application provides a kind of display device, reduces the waste of light energy.
This application provides a kind of display device, including backlight module and display screen, backlight module includes light emitting diode
LED and light guide plate are provided with out light micro-structure on light guide plate, out the first picture of visual field of the setting position and display screen of light micro-structure
Plain regional location is corresponding, and the light of LED reaches the first pixel region of visual field by going out light micro-structure, reduces the wave of light energy
Take.
In a possible design, high reflection layer, the setting position of high reflection layer and display are additionally provided on light guide plate
The second pixel region of visual field position of screen is corresponding, and high reflection layer is used to stop the light of the LED to reach the second pixel of visual field
Region.
In a possible design, display screen is fast reaction liquid crystal display.
In a possible design, display device is virtual reality display device.
Using a kind of display device, by using the display of backlight module, the light from LED is allowed to be concentrated through leaded light
Plate and out light micro-structure reach the region of FoV valid pixel, avoid the inactive pixel area other than LED light arrival FoV, avoid
The waste of light energy.
Detailed description of the invention
Fig. 1 is the schematic diagram of optics FoV effective pixel area and the inactive pixel area optics FoV in VR display device；
Fig. 2 is that hold type provided by the embodiments of the present application shows the signal compared with the smear that impulse type is shown
Figure；
Fig. 3 is smear comparison schematic diagram when traditional LC D and fast LCD add backlight black insertion technology to show moving image；
Fig. 4 is the AA regional display of a kind of fast LCD provided by the embodiments of the present application and through the FoV seen after eyeglass
Picture drawing；
Fig. 5 is a kind of schematic diagram of inactive pixel area for cutting off the non-side IC provided by the embodiments of the present application；
Fig. 6 is a kind of schematic diagram of VR display device provided by the embodiments of the present application；
Fig. 7 is the schematic diagram of VR display device shown in Fig. 6 and hatching；
Fig. 8 is a kind of light path schematic diagram provided by the embodiments of the present application；
Fig. 9 is the schematic diagram of another kind VR display device provided by the embodiments of the present application；
Figure 10 is another light path schematic diagram provided by the embodiments of the present application.
Specific embodiment
The embodiment of the present application provides a kind of VR display device, which uses the quick anti-of backlight black insertion technology
Answer liquid crystal display (fast LCD), alleviate display screen show moving image when caused by smear the problem of, reduce use
Person occurs the degree of dizzy nausea using VR display device.
The displaying principle of LCD is to penetrate to change driving voltage to change the greyscale pixel that liquid crystal layer penetrance reaches different.
The conversion reaction time of traditional most slow rank of plane conversion (in-plane switching, IPS) LCD can be up to 30~40 milliseconds
(millisecond, msec), and fast LCD technology is by reducing thick box, change liquid crystal material, change pixel electrode design etc.
The conversion reaction time of most slow rank can be reduced to 5~6msec by mode, then backlight module black insertion technology of arranging in pairs or groups is by maintenance
(hold type) display, which becomes impulse type (impulse type) display, can effectively reduce smear.Institute as shown in Figures 2 and 3
Show, Fig. 2 is that hold type shows the smear comparison schematic diagram shown with impulse type；Fig. 3 is traditional LC D and fast
Smear comparison schematic diagram when LCD adds backlight black insertion technology to show moving image.In Fig. 2, what no black plug hold type was shown
Smear length wants 4 pixels (pixels), and the smear length that 50% black plug impulse type is shown only has 2 pixels.In Fig. 2
In, ppf** is the abbreviation of every frame pixel (pixel per frame).The image of Fig. 3 is shown it is also obvious that in traditional LC D dynamically
The smear of the picture moving smear more mobile than the fast reaction liquid crystal display dynamic menu for backlight black insertion technology of arranging in pairs or groups is tight
Weight.
The active region (active area, AA) of fast reaction liquid crystal display is usually rectangular.And VR display device in order to
Human eye is simulated, after eyeglass, human eye is it is seen that an approximate circle FoV, so the pixel in AA can not penetrate
Eyeglass all shows that the pixel in i.e. AA cannot be all seen in visual field, as shown in Fig. 4 and Fig. 1, in FoV in FoV
Pixel can see for user, referred to as valid pixel, and the region in FOV is known as effective pixel area；Pixel outside FoV is not
It can be easily seen by the user, referred to as inactive pixels, the region outside FoV is known as inactive pixel area.Thus cause the wave of pixel
Take.For fast reaction liquid crystal display, the waste of backlight module light energy is also resulted in.
In order to reduce the waste of light energy, as shown in figure 5, cutting off the glass of inactive pixel area compared to for Fig. 1 or Fig. 4
Glass, to reduce the waste of luminous energy caused by inactive pixel area.What needs to be explained here is that the construction of LCD is the parallel glass of two panels
Glass substrate plates transparent electrolemma on the inside of two pieces of glass substrates, according to the difference of display mode, then on these film surfaces
The oriented film that liquid crystal molecule can be made to sort according to certain orientation on figure then injects liquid crystal between two pieces of glass substrates, adds
It is obtained with sealing.So cutting off the glass of inactive pixel area here, the corresponding glass base in inactive pixel area is exactly cut off
Plate further obtains fast LCD shown in fig. 5 behind excision inactive pixel area.As shown in figure 5, it is corresponding only to have cut off the area AA
The glass of a part of inactive pixel area.And in the region AA the glass of another part inactive pixel area be not removed be because
Fast LCD display is provided with drive integrated circult (integrated circuit, IC) and glass substrate in this side
On have circuit trace, so the glass of the inactive pixel area of the non-side IC can only be cut off.Therefore close to the inactive pixels area of the side IC
Domain, which is appointed, so has the waste of backlight module light energy.
In order to be further reduced the waste of light energy, this application provides a kind of display device, including backlight module and aobvious
Display screen, backlight module include Light-emitting diode LED and light guide plate, light micro-structure is provided with out on light guide plate, out light micro-structure
It is arranged that position is corresponding with visual field the first pixel region position of display screen, the first pixel region of visual field here refers to that visual field has
Pixel region is imitated, the light of LED reaches the first pixel region of visual field of display screen by going out light micro-structure.
Optionally, in the embodiment of the present application, which is fast reaction liquid crystal display.
Optionally, in the embodiment of the present application, display device is Virtual Reality display device.
The scheme of the embodiment of the present application is illustrated so that display device is VR device as an example below.It should be noted that
In this embodiment, the visual field effective pixel area of display screen is properly termed as the first pixel region of visual field of display screen；Display screen
Visual field inactive pixel area be properly termed as the second pixel region of visual field of display screen.
VR display device provided by the embodiments of the present application uses the display comprising backlight module, which is using non-
Self luminous fast LCD, as shown in fig. 6, Fig. 6 is a diagrammatic cross-section of Fig. 7.
As shown in fig. 6, VR display device includes backlight module and display screen, display screen here is liquid crystal display fast
LCD.Liquid crystal display is referred to as liquid crystal cell.Backlight module include light emitting diode (light emitting diode,
) and light guide plate LED.On light guide plate, the position of corresponding effective pixel area is provided with out light micro-structure, and light micro-structure is used for out
Light passes through；The light that LED is generated can be by light guide plate and light micro-structure reaches the display area of liquid crystal cell out.And light is logical
It crosses out light micro-structure and concentrates the effective pixel area for reaching FoV, the light for avoiding LED generation reaches FoV's by light guide plate
Inactive pixel area reduces the waste of luminous energy.Wherein, the light that LED is generated has by light guide plate and the out arrival of light micro-structure
The light path schematic diagram of pixel region is imitated, as shown in Figure 8.
The purpose of light micro-structure is the total reflection for destroying light in light guide plate out；When light encounters light micro-structure out, entirely
Conditioned reflex is destroyed, and light leaves light guide plate and enters liquid crystal cell.
Optionally, in this embodiment, the density of setting for going out light micro-structure close to the side LED is lower, and it is micro- to go out light far from the side LED
The density of setting of structure is higher, to guarantee that backlight module light is evenly distributed.
The shape of light micro-structure can be convex shaped out, be also possible to groove type, concrete shape, in the embodiment
In without limitation, but can uniformly go out light.In addition, it is necessary to explanation, the production method of light micro-structure can have much out
Kind, for example, directly printing on light guide plate, or micro-structure is stung out on mode, then turn to be engraved on light guide plate, in leaded light
Light micro-structure is formed out on plate, the production method for going out light micro-structure is not construed as limiting in the embodiment of the present application.
Optionally, as shown in fig. 6, the VR display device further includes reflector plate and some other devices.Reflector plate setting exists
Light goes out the other side of flash ranging, in transmission process, reflects light back into light guide plate in light guide plate for the LED light generated
In, for improving the service efficiency of light.
Can be effective using the VR display device, the further waste for reducing light energy.Under equivalent brightness setting,
Backlight module power consumption about 10% can be reduced, or the display brightness of VR display device 10% can be effectively increased.
As shown in figure 9, the VR display device is compared to shown in Fig. 6 the embodiment of the present application also provides a kind of VR display device
VR display device, on light guide plate, the position of the second pixel region of visual field of corresponding display screen increases high reflection layer, that is, exists
Light guide plate is provided with high reflection layer for the position of the visual field inactive pixel area of display screen.High reflection layer can prevent light saturating
It crosses, and then reaches inactive pixel area, compared to the VR display device that Fig. 6 is provided, further reduce the waste of light energy.
Wherein, the material of high reflection layer can be metal.For example, the metals such as aluminium, silver.
In this embodiment, high reflection layer can be sheet metal or metal coating, be also possible to white metal coating or
White reflection piece etc..If necessary when the high reflection layer of more high reflectance, the high reflection layer of multicoating can be set, so that high anti-
Layer is penetrated with higher reflectivity.
The VR display device that Fig. 9 is provided, by light guide plate and out, light micro-structure reaches effective pixel region to the light that LED is generated
The light path schematic diagram in domain, as shown in Figure 10.
Using VR display device provided by the embodiments of the present application, VR display device light energy is reduced in the area FoV Wai AA
The waste of inactive pixel area.Meanwhile the display brightness of VR display device 10% can be effectively increased, or in the item of equivalent brightness
Under part, lower the 10% of display backlight mould group power consumption.
It should be noted that the technical solution of the embodiment of the present application can be applied not only to the field VR, it is applicable to institute
There are the device of inactive pixel area or equipment in all non-spontaneous areas smooth display screen AA.
The above, the only specific embodiment of the application, but the protection scope of the application is not limited thereto, it is any
Those familiar with the art within the technical scope of the present application, can easily think of the change or the replacement, and should all contain
Lid is within the scope of protection of this application.Therefore, the protection scope of the application should be based on the protection scope of the described claims.
Claims (4)
1. a kind of display device, which is characterized in that including backlight module and display screen, the backlight module includes light emitting diode
LED and light guide plate, are provided with out light micro-structure on the light guide plate, it is described go out light micro-structure setting position and the display screen
The first pixel region of visual field position it is corresponding, the light of the LED by it is described go out light micro-structure reach the visual field first
Pixel region.
2. display device according to claim 1, which is characterized in that be additionally provided with high reflection layer, institute on the light guide plate
The setting position for stating high reflection layer is corresponding with visual field the second pixel region position of the display screen, and the high reflection layer is used for
The light of the LED is stopped to reach second pixel region of visual field.
3. display device according to claim 1 or 2, which is characterized in that the display screen is fast reaction liquid crystal display
Device.
4. display device according to any one of claims 1 to 3, which is characterized in that the display device is virtual reality
Display device.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110388770.8A CN113219659B (en) | 2018-08-15 | 2018-09-29 | Display device |
| PCT/CN2019/083598 WO2020034658A1 (en) | 2018-08-15 | 2019-04-22 | Display device |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2018109303205 | 2018-08-15 | ||
| CN201810930320 | 2018-08-15 |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110388770.8A Division CN113219659B (en) | 2018-08-15 | 2018-09-29 | Display device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109164636A true CN109164636A (en) | 2019-01-08 |
| CN109164636B CN109164636B (en) | 2021-04-09 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110388770.8A Active CN113219659B (en) | 2018-08-15 | 2018-09-29 | Display device |
| CN201811147699.9A Active CN109164636B (en) | 2018-08-15 | 2018-09-29 | Display device |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110388770.8A Active CN113219659B (en) | 2018-08-15 | 2018-09-29 | Display device |
Country Status (2)
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| CN (2) | CN113219659B (en) |
| WO (1) | WO2020034658A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020034658A1 (en) * | 2018-08-15 | 2020-02-20 | 华为技术有限公司 | Display device |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN109164636B (en) | 2021-04-09 |
| CN113219659A (en) | 2021-08-06 |
| WO2020034658A1 (en) | 2020-02-20 |
| CN113219659B (en) | 2022-07-29 |
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