CN105319721B - Display device, visual field display system and the method and apparatus for driving this display device - Google Patents
Display device, visual field display system and the method and apparatus for driving this display device Download PDFInfo
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- CN105319721B CN105319721B CN201510659255.3A CN201510659255A CN105319721B CN 105319721 B CN105319721 B CN 105319721B CN 201510659255 A CN201510659255 A CN 201510659255A CN 105319721 B CN105319721 B CN 105319721B
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- 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
-
- 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
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/35—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being liquid crystals
-
- 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
- G02B2027/0141—Head-up displays characterised by optical features characterised by the informative content of the display
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- 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
- G02B27/0149—Head-up displays characterised by mechanical features
- G02B2027/0154—Head-up displays characterised by mechanical features with movable elements
- G02B2027/0156—Head-up displays characterised by mechanical features with movable elements with optionally usable elements
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- 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
- G02B27/0149—Head-up displays characterised by mechanical features
- G02B2027/0161—Head-up displays characterised by mechanical features characterised by the relative positioning of the constitutive elements
- G02B2027/0163—Electric or electronic control thereof
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N10/00—Thermoelectric devices comprising a junction of dissimilar materials, i.e. devices exhibiting Seebeck or Peltier effects
Abstract
The present invention relates to display device (100), have at least one display unit (105), have picture display face for displaying images (110).There are also at least one interrupt locations (120) for display device (100), it can the transposition between open position and interruption position, and be designed to interrupt the ray optical path (125) being incident on picture display face (110) in interruption position, and optical path is opened in open position.Display device (100) is designed at least one temperature of structure (115) the detection image display surface (110) for being used to show image contactlessly and/or using display unit (105) there are also at least one temperature detecting unit (130).Finally, display device (100) includes controller (135), it is designed to transposition interrupt location (120) between interruption position and open position of the temperature according at least to picture display face (110).
Description
Technical field
The present invention relates to display device, visual field display system, the methods for driving this display device, corresponding device
And corresponding computer program.
Background technique
Common boxlike head up display (being abbreviated as boxlike-HUD or also referred to as windshield-HUD) the problem is that,
When sunlight is injected into head up display directed along principal ray, certain focusing is carried out to image source.Especially using
It locally can be more than to permit when liquid crystal display is as image source (English are as follows: liquid crystal display is abbreviated as LCD)
Perhaps temperature.
It is based on for the known method that (also referred to as parking place) reduces incident ray in head up display un-activation
Close the mechanical shutter (also referred to as blinds) in head up display.Blinds can allow incident ray that can not penetrate, to mechanically shield
It covers from extraneous ray.
10 2,011 105 689 A1 of DE discloses a kind of head up display, has for knowing incident ray intensity
Sensing system and for protecting head up display from the blinds of incident ray.
103 53 156 B4 of DE discloses a kind of blinds for head up display.It can be according to wanting by means of the blinds
The image of display changes the openings of sizes on instrument board.
Summary of the invention
In this context, using scheme mentioned herein, a kind of display device, a kind of view according to main claim are proposed
Field display system, a kind of method for driving this display device, it is also proposed that a kind of device using this method, and it is last
It is proposed a kind of corresponding computer program.Advantageous design by corresponding dependent claims and subsequent can obtain.
Scheme mentioned herein proposes a kind of display device with the following characteristics:
At least one display unit has picture display face for displaying images；
At least one interrupt location, can the transposition between open position and interruption position, and be designed to interrupting
Position interrupts the optical path for the ray being incident on picture display face, and then opens the optical path in open position；
At least one temperature detecting unit is designed to be used to show contactlessly and/or using display unit
The structure of image carrys out at least one temperature of detection image display surface；With
Controller is designed to move between interruption position and open position according at least to the temperature of picture display face
Adjust interrupt location.
Display unit usually can be display for displaying images.Display unit for example can be flat-screen CRT monitor,
Especially TFT controlled liquid crystal display (TFT=thin film transistor；" thin film transistor (TFT) ").Picture display face
It can be the active region on the surface of display unit.Active region can for example correspond to the full-size of image to be shown.
Optical path can be the geometric path of the ray through display device.Ray can be light ray especially sunlight.Interrupt location can
It to be the flat components being made of light-proof material, for example is rectangle or circular baffle or closure member.Interrupt location is for example
It can be designed to closed cell, can be moved between such as detent position and the open position such as open position of interruption position
It is dynamic.But interrupt location also may be implemented as housing or hinge formula baffle.Alternatively, interrupt location can be designed to mirror,
The mirror can the overbanking between interruption position and open position.Temperature detecting unit can be an electronic component, be designed
For the heat radiation of detection image display surface, without being contacted with picture display face.Temperature detecting unit for example can be pyrometer
(high temperature electric explorer), also referred to as radiation calorimeter.Detection unit may be to know temperature and be designed to thermoelectric pile spy
Device, bolometric detector or quantum detector are surveyed, to measure surface temperature.
According to one embodiment, thus interrupt location can be designed to closure member.Here, for example can be using known
Blinds.According to another embodiment, interrupt location can be designed to can overbanking mirror.It can be used for example herein for guidance
The mirror natively needed for optical path.
Alternatively or additionally, temperature detecting unit can be designed to be used to show image using display unit
Structure obtains the temperature of picture display face.These structures can be being especially in picture display face region in display unit
Conductive structure such as semiconductor structure.Temperature detecting unit can for example be designed to obtain the temperature of picture display face
Spend and detect the voltage or voltage change curve of those structures.
Controller can be a kind of electric equipment, handle sensor signal, and issue control signal and/or data letter accordingly
Number.Controller can have interface, which can be designed with hardware and/or software.When using hardware type design, these
Interface for example can be a part of so-called system ASIC, which contains the different function of controller.But also it is possible that
These interfaces are included integrated circuits, or are at least partly made of discrete element.When using software type design, this
A little interfaces can be software module, and the software module also for example is located on microcontroller other than other software modules.
Current protocols are based on following design: can contactlessly detect the temperature of the picture display face of display unit, and root
Interrupt location is controlled according to temperature detected, for so that picture display face masks incident ray.
Such as in liquid crystal box harmfulness heating when, manipulate blinds as interrupt location, thus reduce incident ray,
It is thus avoided that when sunlight is injected and cause thermal damage is caused to liquid crystal display.The detection of liquid crystal box temperature can for example be used
To close blinds in sunlight with actually resulting in liquid crystal box harmfulness heating just.
It is impaired to thus it can be prevented that polarisation filter (Polfilter), or is also possible to prevent liquid crystal precipitating
And then the irreversible loss of contrast is prevented, or even prevent shown picture blanking.
Additionally provide following advantage using contactless temperature detection method: temperature detecting unit can be shown at a distance of image
It arranges to one fixed spacing of face, so that temperature detecting unit will not will be on shadow-casting to picture display face.It thus on the one hand can be with
It avoids to see temperature detecting unit with being disturbed in the displayed image.On the other hand, it is possible thereby to fairly evenly edge
The region detection temperature as big as possible of picture display face, thus can also be improved the precision and reliability of temperature detection.
The scheme can be additional to or instead of the usual static reply for coping with the excessive temperature on liquid crystal display
Measure come using, the counter-measure for example based on use reflexive polarisation filter as the cover plate of head up display or
Transmittance polarisation filter is used inside head up display camera lens.Cold mirror can also be set inside head up display camera lens
Son is reflexive for infra-red radiation, and is radioparent for visible light.Cold light mirror and polarisation filter can also
To be combined with each other.
For common head up display, take the measure that can usually generate following incident effect, that is, projecting
When distance is 2.4 meters, this distance is the distance between virtual image and observation box, and virtual image such as width is 6 °, a height of
2.5 °, and for the head up display with significantly greater virtual image or biggish projector distance, projectile energy is but
It can be very high.In the biggish situation of projector distance, ray more can also be focused consumingly, to locally additionally improve
Radiation intensity, that is, irradiance.Then, using the display device according to scheme described here, even if projector distance is larger or virtual
Image is larger, can also control radiation intensity.
According to this programme embodiment, temperature detecting unit can be designed at least detection image display surface
First part region the first temperature and picture display face second part region second temperature, wherein controller is set
Meter for according to the first temperature and/or second temperature come transposition interrupt location.It is shown for example, first part region can be image
The fringe region in face, second part region are the intermediate regions of picture display face.By detecting the relevant temperature in these regions, example
It can such as know picture display face unevenly heating.
Controller can be advantageously designed for so that the first temperature is associated with second temperature, to obtain relating value.
Controller is designed to utilize the relating value transposition interrupt location herein.Relating value for example can be the first temperature and second
The average value or maximum value of temperature.Relating value is able to achieve the temperature for accurately detecting very much picture display face, and then accordingly reliably
Control interrupt location.
If another portion according to another embodiment by temperature detecting unit designed at least detection image display surface
Subregional another temperature then may be implemented to carry out temperature detection with extra high position precision, wherein controller can be set
Meter is for carrying out transposition interrupt location also according to another temperature.Temperature detecting unit can for example be designed to show image
Show that face is divided into the partial region of multiple same sizes as temperature detection field grid-likely, and measures apart from each other different
The relevant temperature of partial region.Controller thus can be designed to analyze corresponding temperature apart from each other.
Temperature detecting unit can be designed to the temperature for detection image display surface and detect whole image and show
Face.Thus temperature can also be detected in the case where considering the fringe region of picture display face.
Additionally, temperature detecting unit can be designed to the temperature on the surface of detection display unit, wherein the surface
Including at least picture display face.Controller can be thus designed to according to the temperature on the surface come transposition interrupt location.
It is possible thereby to such as also frame temperature around detection image display surface in transposition interrupt location.
According to another embodiment, temperature detecting unit can be designed to the interruption list that also detection is in interruption position
The temperature of member, wherein controller can be designed to come in transposition also according to the temperature of the interrupt location in interruption position
Disconnected unit.It can be determined in the rear indicator of interrupt location closing using the temperature of interrupt location by how many incident ray.
Display device is also provided at least one optical device with display unit thermal coupling and at least one other
Temperature detecting unit.The others temperature detecting unit can be designed to the temperature of detection optics, wherein control
Device can be designed to carry out transposition interrupt location also according to the temperature of optical device.Optical device can be by translucent material structure
At device, such as glass lens or sheet glass.Optical device can arrange at interval with display unit, and for example by leading
The printed conductor or thermally conductive bonding agent of heat are connect with display unit.This embodiment offers following advantages: for detection light
Low-cost contact thermocouple can be used as other temperature detecting units in the temperature for learning device.
Display device can be equipped with shell, which there is at least one the shell nozzle in optical path is arranged in.Display is single
Member can be suitably disposed in shell, so that picture display face is located at shell nozzle opposite.Here, interrupt location can be set
It at shell nozzle, and is designed to light-tightly close shell nozzle in interruption position, and then opens institute in open position
State shell nozzle.Interrupt location for example can use hinge and be fixed on shell, thus is used as to be used to close or open shell and open
The housing of mouth.Interrupt location can be thus integrated into display device with cheap cost price and manufacture cost.
Instead of this interrupt location, sunlight can also be interrupted in the following way and be incident on display: mechanically moved
One of the mirror for adjusting (such as around trunnion axis overbanking) head up display, so that sunlight is no longer directly mapped on display.Then
Similarly mirror is controlled with blinds control under sunlight condition of incidence.
Display unit can be advantageously designed to liquid crystal display.Can be achieved in this way with as light as possible weight and
The display device of structure type as compact as possible.
This programme also proposes a kind of visual field display system for vehicle, wherein the visual field display system has before
State the display device of one of embodiment.Visual field display system for example can be head up display.
Scheme described here also proposes that a kind of method for driving display device, the display device have at least one
Display unit, at least one interrupt location and at least one temperature detecting unit.This method includes the following steps:
Temperature signal is read in, which at least indicates contactlessly being detected by temperature detecting unit for picture display face
, and/or utilize the structure temperature detected that uses to show image；
Transposition signal is provided using temperature signal, to move interrupt location between interruption position and open position
It adjusts.
Finally, scheme described here proposes a kind of device, it is designed to implement in corresponding mechanism, controls
Or the step of exchanging the modification of methods presented herein.Using device form the design variant of the invention can also rapidly and
Effectively realize the purpose of the present invention.
The device currently can be a kind of electric equipment, handle sensor signal, and issue accordingly control signal and/or
Data-signal.The device can have interface, which can be designed with hardware and/or software.It is designed using hardware type
When, these interfaces for example can be a part of so-called system ASIC, which contains the different function of the device.But it can also
Capable, these interfaces are included integrated circuits, or are at least partly made of discrete element.It is set using software type
Timing, these interfaces can be software module, and the software module also for example is located at microcontroller other than other software modules
On.
Computer program product or computer program with program code are also advantageous, and said program code can deposit
Storage is used on machine readable carrier or storage medium such as semiconductor memory, harddisk memory or optical memory
The step of implementing, exchanging and/or control the method according to one of aforementioned embodiments, especially when program product or program are being counted
When being executed on calculation machine or device.
Detailed description of the invention
Solution proposed here is exemplarily described in detail with reference to the accompanying drawings.Wherein:
Fig. 1 is the schematic diagram according to the display device of one embodiment of the present of invention；
Fig. 2 is the schematic diagram according to the visual field display system of the activation of one embodiment of the present of invention；
Fig. 3 is the schematic diagram according to the deactivated visual field display system of one embodiment of the present of invention；
Fig. 4 a, 4b are the schematic diagram according to the display device with optical device of one embodiment of the present of invention；
Fig. 5 is the schematic diagram according to the vehicle with visual field display system of one embodiment of the present of invention；
Fig. 6 is the schematic diagram according to the picture display face for measuring grating with temperature of one embodiment of the present of invention；
Fig. 7 is the flow chart according to the method for driving display device of one embodiment of the present of invention；
Fig. 8 is the block diagram according to the device for implementing display-apparatus driving method of one embodiment of the present of invention；
With
Fig. 9 is the schematic diagram according to the controller of one embodiment of the present of invention.
Specific embodiment
Fig. 1 show the schematic diagram of display device 100 according to an embodiment of the invention.The display device 100 packet
Display unit 105 is included, which has picture display face 110 for displaying images.Display unit 105 further includes structure
115, these structures, which are able to achieve, shows image on picture display face 110.Structure 115 is, for example, to stretch along picture display face 110
Exhibition or the thin film transistor (TFT) or similar electronic component stretched on the picture display face.Display device 100 further includes interrupting
Unit 120, the interrupt location are designed to the transposition between open position and interruption position.Be shown in FIG. 1 for example as
The interrupt location 120 of housing, wherein the point of rotation of interrupt location 120 and the outer edge region of picture display face 110 are adjacent to cloth
It sets.Optical path 125 in interruption position, the ray being incident on picture display face 110 such as sunlight ray is interrupted in unit 120
It is disconnected, to shield ray for picture display face 110.Interrupt location 120 can for example be designed to opaque in interruption position
Block whole image display surface 110 in ground.Interrupt location 120 in an open position, in the open position, light is shown in FIG. 1
Road 125 is opened, so that ray is incident on picture display face 110.
Display device 100 also realizes there is temperature detecting unit 130, and the temperature detecting unit is herein at a distance of picture display face
It arranges to 110 1 fixed spacings, and is designed to the temperature of contactlessly detection image display surface 110.Alternatively or additionally,
Temperature detecting unit 130 and structure 115 are conductively connected, to know that image is aobvious using the potential being applied in structure 115
Show the temperature in face 110.Controller 135 is connected on temperature detecting unit 130.The controller 135 and interrupt location 120 connect
It connects, and is designed to according to the temperature of picture display face 110 the transposition interrupt location between interruption position and open position
120。
Display device 100 especially can be implemented as the component of the head up display in vehicle, as described in referring to Fig. 5.
Especially for contacting for analog (kontaktanalog) head up display, display 105 will receive sunlight
Very non-uniform heating.Thus for example be possible to only the centre of display 105 rather than its edge is heated to harm
Temperature.Therefore, according to one embodiment of present invention, a kind of sensing mechanism 130 can be designed, to detect display 105
Entire surface 110.In contrast, common temperature inductor such as NTC resistance (NTC=negative temperature
coefficient；" negative temperature coefficient "), PTC resistor (PTC=positive temperature coefficient；" positive temperature
Degree coefficient ") or thermocouple can locally block display 105, thus can see in virtual image.
Such as using pyrometer as the surface of 130 pairs of the temperature detecting unit liquid crystal displays as display unit 105
Temperature measures.Herein, the temperature of liquid crystal display 105 is contactlessly detected along entire surface, is thus avoided that
The influence of virtual image.
Mask can also be set between temperature detecting unit 130 and liquid crystal display 105, and the mask is by temperature detection list
The detection zone of member 130 is substantially limited in picture display face 110.The mask should connect with cooling shell structure with heat conduction
It connects, to reduce the influence for blocking temperature to measurement result.
It, can according to one embodiment in order to preferably detect the hot spot in the different zones of liquid crystal display 105
Temperature detecting unit 130 is designed to grating type pyrometer.It thus can be in multiple and different regions of picture display face 110
Inside for example 64 respectively be 8 × 8mm2Region in dividually measure and analyze surface temperature, this wants view sensor 130 at a distance of liquid
Depending on the spacing of crystal display 105.
Also the temperature detecting unit of the maximum temperature on only detection image display surface can be used.
Controller 135 can pass through expedients, to use institute to control the interrupt location 120 of also referred to as blinds
The maximum value for the temperature range known.
Controller 135 is optionally designed to only analyze measurement when for example also detecting the region except liquid crystal surface 110
It is worth a part of grid.
Another embodiment of the present invention regulation, measures the surface temperature of liquid crystal display 105 in box.For this purpose, temperature
Detection unit 130 is designed to measure the box temperature of liquid crystal display 105 directly on glass by structure 115, such as
It is measured by the semiconductor structure of TFT matrix.Temperature detecting unit 130 is for example designed to the crystalline substance of measurement TFT matrix
The conducting voltage of body pipe structure or diode structure, and it is inferred to temperature accordingly.Structure 115 can actually be seen not with very thin
The conductor connection seen, measures displayed image to be able to achieve harmlessly.Structure 115 can also much and principle
On can grouping addressing along display surface 110 be distributed.It can be achieved with the high position precision of measurement in this way.It can also be especially for
Temperature measurement and diode or similar component be added in TFT matrix.
Alternatively or additionally, controller 135 can also be connect with structure 115, to detect surface using structure 115
Temperature.
Fig. 2 show the schematic diagram of the visual field display system 200 of activation according to an embodiment of the invention.The visual field
Display system 200 is also referred to as head up display, it includes display device 100 shown in FIG. 1, and for example be can integrate in vehicle
Instrument board not shown here in.The design of display device 100 has the shell 205 with shell nozzle 210.Display unit 105
Also referred to as display member group, it is suitably disposed in shell 205, so as to be located at shell nozzle 210 right for picture display face 110
Face.Interrupt location 120 is disposed adjacently with shell nozzle 210.Herein, interrupt location 120 is designed in interrupt bit
Light-tightly closing shell nozzle 210 is set, to protect picture display face 110 from incident ray.It is shown in FIG. 2 and is in
The interrupt location 120 of open position, the open position correspond to the state of activation of visual field display system 200.In shell 205 also
It is provided with light source 215.Light source 215 and 217 thermal coupling of LED cooling body, and be designed to for example including three LED, these LED
The back side away from picture display face 110 of display unit 105 is illuminated.Shell with light source 215 and display unit 105
205 are referred to as image generation unit (picture generating unit, be abbreviated as PGU).
Instead of shell nozzle 210, shell 205 also can have the wall surface being made of translucent material.
Temperature detecting unit 130 is arranged except shell 205, and towards picture display face 110, to detect whole image
Display surface 110.
Visual field display system 200 is also devised with reflector 220, and the reflector is for example including lesser mirror 225 and also referred to as
For the biggish mirror 230 of main mirror.The opposite of shell nozzle 210 is arranged in lesser mirror 225.In the anti-of primary mirror 230
It penetrates in region and is provided with transparent cover plate 235.It is embedded into the opening of instrument board to such as suitability of cover plate 235.In image
The image shown on display surface 110 arrives first at lesser mirror 225, and is reflected on primary mirror 230 therefrom.Primary mirror
230 are for example designed to so that image projects on the windshield not shown here of vehicle through cover plate 235.
In the opposite direction, image can be reflected into via mirror 225,230 through the incident sunlight ray of cover plate 235
On display surface 110.Sunlight ray can make 110 heating of picture display face.In order to prevent this situation, can be by interrupt location
120 interrupt principal ray optical path 125 between lesser mirror 225 and shell nozzle 210.
Be additional to or instead of interrupt location 120 the design, sunlight can be interrupted in the following way and be incident on figure
As on display surface 110: using at least one mirror in the mirror 225,230 of visual field display system as the interrupt location
120 or as another interrupt location 120.In this case, the mirror 225 of at least one as interrupt location 120,
230 can mechanically transposition, such as around trunnion axis overbanking, so that incident ray is no longer mapped on picture display face 110.It is right
Described in the control of at least one mirror 225,230 as interrupt location 120 and the interrupt location 120 to blinds form
Control similarly carries out.
Fig. 3 show the schematic diagram of deactivated visual field display system 200 according to an embodiment of the invention.It is different
In Fig. 2, interrupt location 120 is in interruption position in Fig. 3, and in the interruption position, shell nozzle 210 is interrupted unit
120 light-tightly block.
According to this embodiment, temperature detecting unit 130 is designed to deviating from interruption position for detection interrupt location 120
The temperature in the face of shell nozzle 210.
Fig. 4 a, 4b show showing for the display device 100 according to an embodiment of the invention with optical device 400
It is intended to.The partial view of display device 100 is respectively shown in Fig. 4 a, 4b.These partial views respectively show an optical device
400, according to this embodiment, the optical device is designed to sapphire sheet, referred to as sapphire.Sapphire sheet 400 is utilized and is led
The optical cement (also referred to as optics adhesive) of heat is adhered on the face towards light source of display unit 105.Sapphire sheet 400
Thus with 105 thermal coupling of display unit.Display unit 105 is for example implemented as liquid crystal box herein.It is short at a distance of sapphire sheet 400
It is provided with field lens 405 to distance.Diffusing globe 410 is mounted on the face towards sapphire sheet 400 of field lens 405.Field is thoroughly
Mirror 405 and diffusing globe 410 are designed to so that light ray boundling shot from the light source, and directs into through sapphire sheet 400
On display unit 105.NTC resistance is for example mounted in the fringe region of the side towards field lens 405 of sapphire sheet 400
415 are used as temperature sensor, which is designed to the temperature of detection sapphire sheet 400.
Display unit 105 is shown the encirclement of device frame 420.Display frame 420 can be conductive by curved conductor 422
Ground contact.Display frame 420, sapphire sheet 400 and field lens 405 respectively with 425 thermal coupling of cooling body.In cooling body 425
On be provided with ventilator 430, which is designed to cool down cooling body 425.Herein, field lens 405 and indigo plant
Jewel piece 400 is respectively by being also referred to as TEC (thermal expansion coefficient；" thermal expansion coefficient ") amber ear
Note element 435 is connect with cooling body 425.Peltier's element 435 can be controlled by Peltier's element driver, the driver
The H bridge constituted for example including the field effect transistor for being abbreviated as FET by four.
Fig. 4 b show the enlarged drawing for the fringe region of display unit 105 shown in fig.4.
According to one embodiment, one or more LED not shown here as light source and cooling body thermal coupling, and by its
Light is projected along the direction of display member group.Head up display image is generated on LCD box 105.Field lens 405 herein may be used
So that the turn light rays of LED so that light penetrate compared with large mirror and compared with small mirror form head up display camera lens as far as possible
It is directed toward observation box (Eyebox).Diffusing globe 410 is needed to improve the uniformity of brightness of image.
Fig. 5 show the signal of the vehicle 500 according to an embodiment of the invention with visual field display system 200
Figure.Visual field display system 200 can be the visual field display system shown in figs 2 and 3.Visual field display system 200 can integrate
Into the instrument board of vehicle 500.Herein, primary mirror 230 is corrected, so that head up display 200 is from display unit
The image of 105 principal rays 125 projected is reflected on the windshield 505 of vehicle 500 through cover plate 235.Principal ray 125 enters
Firing angle degree by selection so that principal ray 125 by windshield 505 be further reflected into driver visual field 510 also referred to as
In the region for observing box, so that driver can see the figure as the virtual image occurred below in windshield 505
Picture.
Image generation unit 205 generates image to be illuminated later on the display 105, and described image is aobvious by coming back
Show that device mirror 225,230 and windshield 505 are reflected onto the glasses of driver, and feels to be virtual figure by driver
Picture.If present sunlight ray 515 substantially enters in head up display 200 with principal ray 125 in parallel, the sunlight is penetrated
Line will focus on display 105.
Fig. 6 show the picture display face 110 according to an embodiment of the invention with temperature measurement grating 600
Schematic diagram.Picture display face 110 is, for example, picture display face shown in Fig. 1.Unshowned temperature detecting unit is set in Fig. 6
Meter is used to that picture display face 110 is divided into different measured zones by means of temperature measurement grating 600, so that detection image is aobvious
Show the temperature in face 110.
According to one embodiment, picture display face 110 is divided into first part region by means of temperature measurement grating 600
605 and second part region 610, wherein the size of picture display face 110 is equal to the image shown on picture display face 110
Net image size.Here, first part region 605 can be located among picture display face 110,610, second part region
In the fringe region of picture display face 110.In Fig. 6, picture display face 110 is for example entered in first part region 605
The sunlight ray heating penetrated.Second part region 610 is not affected by sunlight ray.The relevant temperature of the partial region 605,610
It thus can be significantly different.Temperature detecting unit is designed to detect the temperature difference.Controller can be correspondingly designed to
The temperature difference is considered when controlling interrupt location.
According to this embodiment, picture display face 110 is divided into a number of other parts by means of temperature measurement grating 600
Region 615, wherein temperature detecting unit is designed to detect the relevant temperature of other partial regions 615.Controller
It can be designed to also consider the relevant temperature of other partial regions 615 when controlling interrupt location.
Picture display face 110 can be polarized filter 620 and block, wherein the polarisation filter 620 in Fig. 6 is beyond figure
As the fringe region of display surface 110 stretches out.The polarisation filter such as 45% transmissivity with incident ray.Temperature measurement
Grating 600 can extend beyond the entire surface of display glass 620, or also extend beyond the marginal zone of display glass 620
Domain.Thus temperature detecting unit can be designed to both in the entire surface of picture display face 110 detection part region 605,
610,615 relevant temperature, and detect the relevant temperature of the display area adjacent with picture display face 110.
The gross area that temperature measures grating 600 is, for example, 66 × 66mm2。
Fig. 7 show the flow chart of the method 700 according to an embodiment of the invention for driving display device.?
In step 705, reading temperature signal, the temperature signal at least indicate the contactless by temperature detecting unit of picture display face first
Structure temperature detected ground detection, and/or that utilization uses to show image.In next step 710, temperature is utilized
It spends signal and transposition signal is provided, to make interrupt location transposition between interruption position and open position.
The measurement being complemented in the display area used can measure and liquid crystal display heat according to one embodiment
The temperature of the transparent configuration of coupling.Except the display surface used, common sensor such as NTC resistance, platinum can be used
Measure resistance (PT100) or thermocouple.The obtained temperature can especially be used to the pursuit displays temperature when blinds is closed
Development and change, and control or regulate the work of (also referred to as closed-loop control) ventilator or Peltier's element when necessary.
Blinds can pass through suitable control, to close blinds when display temperature is more than fixed limiting value.
In the method for analyzing measurement and for controlling blinds, according to one embodiment, the limiting value is by one kind
Temperature determines, in the temperature, deducts the reserved factor (Vorhalt) of measurement unreliability outside, liquid crystal display is still noiseless
Ground work, is not precipitated in liquid crystal especially.It is also conceivable to acting duration, for example to avoid polarization filtering
Device is damaged for a long time.It can also be for example by low pass to measurement value filtering, to inhibit the interference of noise or short time.
When blinds is closed, pyrometer can use to measure blinds temperature and replace the temperature of liquid crystal display.If
Use pyrometer grid to measure grating as temperature, then it when necessary can be by selecting individual measuring surface come so that detection zone is suitable
Assigned in blinds.It can be inferred that whether sunlight all works always by temperature curve.If temperature or gradient are obtained by the two
The reference parameter arrived is lower than defined limiting value, then can open blinds again.
Under vehicle stationary state, i.e., in the case where cutting off ignition conditions, blinds is normally closed.
As shown in figs 4 a and 4b for control ventilator 430 and the method for Peltier's element 435 to may include as follows
Three steps.
If the temperature measured on sapphire 400 by sensor 415 is higher than the first limiting value for being, for example, 55 DEG C, blue
Jewel 400 just drops to 55 DEG C by the electric current of Peltier's element 435 again.The simulation with PI control characteristic can be used thus
Regulating loop.
If temperature on sapphire 400 lower than the second limiting value for being, for example, 10 DEG C, allow for Peltier's element 435 with
Reverse polarity work heats sapphire 400 and display 105 with this.
If the temperature of sapphire 400 is between the first and second limiting values, neither heats nor cool down.In order to subtract
The resistance of small Peltier's element 435 can make 435 electric short circuit of Peltier's element.
This method can also be implemented in the case where blinds is closed.
Under vehicle stationary state, i.e., in the case where cutting off ignition conditions, usually neither heats nor cool down.
Instead of the static comparison of display temperature T and limiting value, the pace of change Δ T/ Δ t of temperature can also be analyzed, with
Just cooling can promptly be activated when sunlight starts to inject and display 105 is quickly warmed up.In such a case, it is possible to according to change
Change speed to change limiting value.Alternatively or additionally, it can seek comparing parameter using mathematical way, the comparison parameter is simultaneously
Contain temperature and pace of change.
Temperature adjusting can also realize that viewer model allows by available measurement parameter ratio with viewer model
As display temperature or sapphire temperature and known system parameter such as thermal conductivity and thermal capacitance are come more quickly and more accurately
Adjust temperature.
Fig. 8 show according to an embodiment of the invention for implementing the device 800 of display-apparatus driving method
Block diagram.The device 800 includes reading unit 805 for reading in temperature signal and for providing transposition using temperature signal
The offer unit 810 of signal.Device 800 for example can be the controller introduced referring to Fig.1.
Fig. 9 show the schematic diagram of controller 135 according to an embodiment of the invention.Controller 135 can design
At microcontroller, or it can also be designed to ASIC or FPGA.Controller 135 and the pyrometer 130 as temperature detecting unit
Connection, and connect with NTC resistance 415.Controller 135 is designed to using pyrometer 130 and NTC resistance 415 corresponding
Temperature signal obtain temperature, and obtain temperature changing speed when necessary.Here, controller 135 can be designed to
Compared with giving with limiting value temperature, and the blinds 120 of head up display is controlled according to the comparison, and control light source 215
LED, or additionally control Peltier's element 435 and ventilator 430.For this purpose, controller 135 and the ratio of motor driver 905
Such as the bipolar stepper motor driver connection of two-phase, which is used to control the blinds driving machine coupled with blinds 120
The such as stepper motor of structure 905.Controller 135 also be used to drive the bipolar peltier driver 915 of Peltier's element 435 to connect
It connects.Finally, controller 135 is connect with the LED driver for the LED for being used to control light source 215.
Claims (14)
1. a kind of display device (100), has the feature that
At least one display unit (105) has picture display face for displaying images (110)；
At least one interrupt location (120), can the transposition between open position and interruption position, and be designed to interrupting
Position interrupts the optical path (125) for the ray being incident on picture display face (110), and then opens the light in open position
Road；
At least one temperature detecting unit (130) is designed to contactlessly and/or utilizes the use of display unit (105)
To show that the structure (115) of image carrys out at least one temperature of detection image display surface (110)；With
Controller (135) is designed to the temperature according at least to picture display face (110) in interruption position and open position
Between transposition interrupt location (120).
2. display device (100) as described in claim 1, wherein interrupt location (120) is designed to closure member or can overbanking
Mirror.
3. display device (100) as described in claim 1, wherein temperature detecting unit (130) is designed at least detect
First temperature in the first part region (605) of picture display face (110) and the second part region of picture display face (110)
(610) second temperature, wherein controller (135) is designed to according to the first temperature and/or second temperature come transposition interruption
Unit (120).
4. display device (100) as claimed in claim 2, wherein controller (135) be designed to so that the first temperature with
Second temperature association, to obtain relating value, wherein controller (135) is designed to interrupt using the relating value transposition
Unit (120).
5. display device (100) as claimed in claim 3, wherein temperature detecting unit (130) is designed at least detect
Another temperature in another part region (615) of picture display face (110), wherein controller (135) be designed to also according to
Another temperature comes transposition interrupt location (120).
6. display device (100) as described in claim 1, wherein temperature detecting unit (130) is designed to detect
The temperature of picture display face (110) and detect whole image display surface (110).
7. display device (100) as described in claim 1, wherein temperature detecting unit (130) is designed at also detection
In the temperature of the interrupt location (120) of interruption position, wherein controller (135) is designed to also according in interruption position
The temperature of interrupt location (120) come transposition interrupt location (120).
8. display device (100) as described in claim 1 has the optics of at least one and display unit (105) thermal coupling
Device (400) and at least one other temperature detecting unit (415), the others temperature detecting unit are designed to examine
The temperature of photometry device (400), wherein controller (135) is designed to move also according to the temperature of optical device (400)
It adjusts interrupt location (120).
9. display device (100) as described in claim 1 has shell (205), which there is at least one to be arranged in light
Shell nozzle (210) on road (125), wherein display unit (105) is arranged in shell (205), so that picture display face
(110) it is located at shell nozzle (210) opposite, wherein interrupt location (120) is arranged at shell nozzle (210), and is designed to use
In light-tightly closing shell nozzle (210) in interruption position, and the shell nozzle is then opened in open position.
10. display device (100) as described in claim 1, wherein display unit (105) is designed to liquid crystal display.
11. the visual field display system (200) that one kind is used for vehicle (500), wherein the visual field display system (200) has basis
The display device (100) of any one of preceding claims.
12. a kind of method (700) for driving display device, which is included
At least one display unit (105) has picture display face for displaying images (110)；
At least one interrupt location (120), can the transposition between open position and interruption position, and be designed to interrupting
Position interrupts the optical path (125) for the ray being incident on picture display face (110), and then opens the light in open position
Road；With
At least one temperature detecting unit (130) is designed to contactlessly and/or utilizes the use of display unit (105)
To show that the structure (115) of image carrys out at least one temperature of detection image display surface (110), wherein this method (700) includes
Following steps:
Read in (705) temperature signal, the temperature signal at least indicate picture display face (110) by temperature detecting unit (130)
Structure (115) temperature detected that contactlessly detect, and/or utilization uses to show image；
There is provided (710) transposition signal using temperature signal, so as to make interrupt location (120) interruption position and open position it
Between transposition.
13. a kind of device (800), which includes reading unit (805) for reading in temperature signal and for benefit
The offer unit (810) of transposition signal is provided with temperature signal, is designed to execute method according to claim 12
(700) Overall Steps.
14. a kind of machine readable storage medium, has the computer program being stored thereon, which is designed to execute
The Overall Steps of method (700) according to claim 12.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102014214976.2A DE102014214976A1 (en) | 2014-07-30 | 2014-07-30 | Display device, field of view display system and method and apparatus for operating such a display device |
| DE102014214976.2 | 2014-07-30 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105319721A CN105319721A (en) | 2016-02-10 |
| CN105319721B true CN105319721B (en) | 2019-06-18 |
Family
ID=55079464
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510659255.3A Expired - Fee Related CN105319721B (en) | 2014-07-30 | 2015-07-29 | Display device, visual field display system and the method and apparatus for driving this display device |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN105319721B (en) |
| DE (1) | DE102014214976A1 (en) |
| FR (1) | FR3024580B1 (en) |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105759868A (en) * | 2016-05-13 | 2016-07-13 | 浙江水晶光电科技股份有限公司 | Temperature control device and method applicable to automobile head-up display device |
| CN106773479B (en) * | 2016-12-14 | 2019-07-19 | 海信集团有限公司 | The method of adjustment and device of light valve institute light spot received |
| DE102017211180A1 (en) * | 2017-06-30 | 2019-01-03 | Panasonic Automotive & Industrial Systems Europe GmbH | Head-Up Display |
| FR3071070B1 (en) * | 2017-09-14 | 2019-09-27 | Psa Automobiles Sa | HIGH HEAD VISION SYSTEM WITH SOLAR OVERHEATING DETECTION. |
| JP2021113834A (en) * | 2018-04-18 | 2021-08-05 | マクセル株式会社 | Head-up display device |
| JP6942747B2 (en) * | 2018-05-11 | 2021-09-29 | 矢崎総業株式会社 | Vehicle display device |
| CN110471181B (en) * | 2018-05-11 | 2022-02-18 | 矢崎总业株式会社 | Display device for vehicle |
| EP3567412B1 (en) * | 2018-05-11 | 2023-08-30 | Yazaki Corporation | Vehicle display device |
| JP7061943B2 (en) * | 2018-08-08 | 2022-05-02 | 京セラ株式会社 | 3D display device, 3D display system, head-up display system, and mobile |
| US11092324B2 (en) | 2019-03-28 | 2021-08-17 | GM Global Technology Operations LLC | Semi-transparent sign temperature protection |
| DE102020107697B4 (en) | 2020-03-19 | 2023-08-31 | Audi Aktiengesellschaft | Method for operating a display device, display device and motor vehicle with a display device |
| DE102020125168B3 (en) | 2020-09-26 | 2022-03-03 | E-Lead Electronic Co., Ltd. | Head-up display device and method of operation thereof |
| DE112021007243A5 (en) * | 2021-03-11 | 2023-12-28 | Continental Automotive Technologies GmbH | DISPLAY DEVICE |
| JP2023153509A (en) * | 2022-04-05 | 2023-10-18 | 矢崎総業株式会社 | Display device for vehicle |
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| JP3936653B2 (en) | 2002-11-20 | 2007-06-27 | 矢崎総業株式会社 | Vehicle display device |
| DE102011105689B4 (en) | 2011-06-22 | 2018-11-15 | Continental Automotive Gmbh | Display device with a liquid crystal display and method for protecting a liquid crystal display |
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2014
- 2014-07-30 DE DE102014214976.2A patent/DE102014214976A1/en not_active Withdrawn
-
2015
- 2015-07-24 FR FR1557036A patent/FR3024580B1/en not_active Expired - Fee Related
- 2015-07-29 CN CN201510659255.3A patent/CN105319721B/en not_active Expired - Fee Related
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| JP2002347476A (en) * | 2001-05-28 | 2002-12-04 | Mitsubishi Motors Corp | Car-mounted display glare-proof mechanism |
| JP2013228442A (en) * | 2012-04-24 | 2013-11-07 | Nippon Seiki Co Ltd | Head-up display device |
| CN203046807U (en) * | 2012-12-20 | 2013-07-10 | 北汽福田汽车股份有限公司 | Sunshine sensor and vehicle |
| CN103287245A (en) * | 2013-06-14 | 2013-09-11 | 无锡伊佩克科技有限公司 | Automotive automatic sunscreen roller shutter |
| CN104085277A (en) * | 2014-07-14 | 2014-10-08 | 徐秀 | Sunshade temperature control device for automobile front windshield |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102014214976A1 (en) | 2016-02-04 |
| FR3024580B1 (en) | 2019-09-13 |
| FR3024580A1 (en) | 2016-02-05 |
| CN105319721A (en) | 2016-02-10 |
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