CN109515326A - Display screen and mirror surface dual-purpose type display device and the rearview mirror with it - Google Patents
Display screen and mirror surface dual-purpose type display device and the rearview mirror with it Download PDFInfo
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- CN109515326A CN109515326A CN201811361963.9A CN201811361963A CN109515326A CN 109515326 A CN109515326 A CN 109515326A CN 201811361963 A CN201811361963 A CN 201811361963A CN 109515326 A CN109515326 A CN 109515326A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R1/00—Optical viewing arrangements; Real-time viewing arrangements for drivers or passengers using optical image capturing systems, e.g. cameras or video systems specially adapted for use in or on vehicles
- B60R1/02—Rear-view mirror arrangements
- B60R1/04—Rear-view mirror arrangements mounted inside vehicle
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R1/00—Optical viewing arrangements; Real-time viewing arrangements for drivers or passengers using optical image capturing systems, e.g. cameras or video systems specially adapted for use in or on vehicles
- B60R1/12—Mirror assemblies combined with other articles, e.g. clocks
-
- 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
- G02F1/13306—Circuit arrangements or driving methods for the control of single liquid crystal cells
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1343—Electrodes
- G02F1/134309—Electrodes characterised by their geometrical arrangement
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
- G09G3/3607—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals for displaying colours or for displaying grey scales with a specific pixel layout, e.g. using sub-pixels
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
- G09G3/3611—Control of matrices with row and column drivers
- G09G3/3696—Generation of voltages supplied to electrode drivers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R1/00—Optical viewing arrangements; Real-time viewing arrangements for drivers or passengers using optical image capturing systems, e.g. cameras or video systems specially adapted for use in or on vehicles
- B60R1/12—Mirror assemblies combined with other articles, e.g. clocks
- B60R2001/1215—Mirror assemblies combined with other articles, e.g. clocks with information displays
Abstract
A kind of display screen and mirror surface dual-purpose type display device and the rearview mirror with it, including display panel, display area and mirror sections are formed in the display panel, it is provided with show electrode within the display area, mirror electrode is provided in the mirror sections, the mirror electrode is provided with and the mutually independent control circuit of the show electrode, the display screen and mirror surface dual-purpose type display device have display state and mirror status, in the display state, first voltage is applied on the mirror electrode, in the mirror status, second voltage is applied on the mirror electrode.The display device can switch between display screen and mirror surface.
Description
Technical field
The present invention relates to technical field of liquid crystal display, more particularly to a kind of display screen and mirror surface dual-purpose type display device and
Rearview mirror with the display screen Yu mirror surface dual-purpose type display device.
Background technique
The complexity and information density of vehicle information system are increasingly rising, this makes automotive interior display no longer only
It is that basic concentration instrument is shown, but to be met and increasingly be shown demand with diversified in-vehicle information in detail.
As liquid crystal price constantly reduces, the specification of Vehicular display device slowly surmounts previous large display screen, and its
Developments start to accelerate.And it is the outer functionalization of advanced driving assistance system (ADAS), aobvious using the back visibibility of rear camera
Show that the extensive use of system and the regulation that side-view mirror and rearview mirror are equipped with camera are relaxed, it is new to require that automobile has
Display function.
Vehicular display device needs to have the performance different from consumer type display purposes.Other than fundamental performance parameter, also
Design need to be improved and the Vehicular display device for not interfering driving information is provided.
Demand increasingly is shown with diversified in-vehicle information in detail in order to meet.The one of of the prior art solves
Scheme is in addition to install a vehicle mirror display screen additional again in the car on Back mirror.
But the installation of vehicle mirror display screen influences whether the back vision function of script room mirror, reduces the safety of formation
Property.
Summary of the invention
In view of this, the present invention provides a kind of display screen and mirror surface dual-purpose type display device and the rearview mirror with it, it should
Display device can switch between display screen and mirror surface.
The present invention provides a kind of display screen and mirror surface dual-purpose type display device, including display panel, the display panels
Display area and mirror sections are inside formed with, are provided with show electrode within the display area, are set in the mirror sections
It is equipped with mirror electrode, the show electrode and the mirror electrode are respectively provided with independent control circuit, the display screen and mirror
Face dual-purpose type display device has display state and mirror status, and in the display state, the mirror electrode is applied with first
Voltage, in the mirror status, the mirror electrode is applied with second voltage.
Preferably, the display screen includes the upper polaroid set gradually, the first quarter-wave plate, colorized optical filtering chip base
Plate, array substrate, the second quarter-wave plate and down polaroid, are filled out between the colored filter substrate and the array substrate
Filled with liquid crystal layer, the show electrode includes the first show electrode and the second show electrode, in the display area, described first
Show electrode and second show electrode are respectively arranged at the two sides of the liquid crystal layer, and the mirror electrode includes the first mirror surface
Electrode and the second mirror electrode, in the mirror sections, first mirror electrode and second mirror electrode are respectively set
In the two sides of the liquid crystal layer, first mirror electrode is set to liquid crystal layer towards the side of the colored filter, described
Second mirror electrode is set to the liquid crystal layer towards the side of the array substrate, the upper polaroid and the down polaroid
Transmission axis be parallel to each other, the LCD alignment of liquid crystal layer orthogonal configuration up and down.
Preferably, the display screen includes the upper polaroid set gradually, the first quarter-wave plate, colorized optical filtering chip base
Plate, array substrate, the second quarter-wave plate and down polaroid, are filled out between the colored filter substrate and the array substrate
Filled with liquid crystal layer, the show electrode includes the first show electrode and the second show electrode, in the display area, described first
Show electrode is set in the array substrate, and second show electrode is set on first show electrode, the mirror
Face electrode includes the first mirror electrode and the second mirror electrode, and in the mirror sections, the first mirror surface motor is set to institute
State in array substrate, second mirror electrode is set on first mirror electrode, the upper polaroid and it is described it is lower partially
The transmission axis of mating plate is parallel to each other, and the LCD alignment of the liquid crystal layer is parallel up and down.
Preferably, apply first voltage on the mirror electrode, make the light into the mirror sections can not be again
It is secondary to be projected from mirror sections, so that the display screen and mirror surface dual-purpose type display device form display pattern, in the mirror surface electricity
It is extremely upper to apply second voltage, so that the light into the mirror sections is projected again from mirror sections, so that the display
Screen forms mirror mode with mirror surface dual-purpose type display device.
Preferably, when the display screen and mirror surface dual-purpose type display device are in the display pattern, the display screen
First voltage is applied to the mirror electrode by way of alternating current with mirror surface dual-purpose type display device；When the display screen with
When mirror surface dual-purpose type display device is in the mirror mode, the display screen and mirror surface dual-purpose type display device pass through alternating current
Form to the mirror electrode apply second voltage.
Preferably, apply the second voltage, on the mirror electrode to cause light total in the liquid crystal layer
Phase difference is less than π.
Preferably: the display screen and mirror surface dual-purpose type display device include data line, scan line and mirror surface power supply line,
The data line and the scan line are connected by TFT with second show electrode, the mirror surface power supply line and described second
Mirror electrode is connected, and applies voltage to the mirror electrode by the mirror surface power supply line.
Preferably, the display area includes multiple pixel regions, and each pixel region includes red sub-pixel area
Domain, blue subpixel areas and green subpixel areas, each subpixel area intersect limit by the scan line and the data line
Fixed, the extending direction of the mirror surface power supply line is identical as the scan line, and is set side by side with the scan line, alternatively, described
The extending direction of mirror surface power supply line is identical as the data line, and is set side by side with the data line, alternatively, the mirror surface power supply
Line is overlapped with the scan line or data line.
Preferably, the display area includes multiple pixel regions, and each pixel region includes red sub-pixel area
Domain, blue subpixel areas and green subpixel areas are provided with a corresponding mirror by each subpixel area
Face region or the red subpixel areas, the blue subpixel areas, the green subpixel areas and the mirror surface
It is laid in 2X2 matrix in region.
The present invention also provides a kind of rearview mirror, the rearview mirror includes that above-mentioned display screen and the display of mirror surface dual-purpose type fill
It sets.
In conclusion in the present invention, it, can by making show electrode and mirror electrode be respectively provided with independent control circuit
To apply voltage to show electrode and mirror electrode respectively as needed, display screen and mirror surface dual-purpose type display device are enabled to
Switch between display state and mirror status.
The above description is only an overview of the technical scheme of the present invention, in order to better understand the technical means of the present invention,
And it can be implemented in accordance with the contents of the specification, and in order to allow above and other objects, features and advantages of the invention can
It is clearer and more comprehensible, it is special below to lift preferred embodiment, and cooperate attached drawing, detailed description are as follows.
Detailed description of the invention
Fig. 1 is the cross section structure schematic diagram of display screen and mirror surface dual-purpose type display device in first embodiment of the invention.
Fig. 2 is the display area schematic diagram that optical path is transmitted in no applied voltage in Fig. 1.
Fig. 3 is the display area schematic diagram that optical path is transmitted when applying voltage in Fig. 1.
Fig. 4 is the mirror sections schematic diagram that optical path is transmitted in the state of display in Fig. 1.
Fig. 5 is the mirror sections schematic diagram that optical path is transmitted in mirror status in Fig. 1.
Fig. 6 is the schematic diagram of display screen and mirror surface dual-purpose type display device route arrangement in Fig. 1.
Fig. 7 is the schematic diagram of display screen and mirror surface dual-purpose type display device route arrangement in second embodiment of the invention.
Fig. 8 is the schematic diagram of display screen and mirror surface dual-purpose type display device route arrangement in third embodiment of the invention.
Fig. 9 is the schematic diagram of display screen and mirror surface dual-purpose type display device route arrangement in fourth embodiment of the invention.
Figure 10 is the cross section structure schematic diagram of display screen and mirror surface dual-purpose type display device in fifth embodiment of the invention.
Specific embodiment
It is of the invention to reach the technical means and efficacy that predetermined goal of the invention is taken further to illustrate, below in conjunction with
Attached drawing and preferred embodiment, detailed description are as follows.
The present invention provides a kind of display screen and mirror surface dual-purpose type display device and the rearview mirror with it, the display device energy
It is enough to be switched between display screen and mirror surface.
Fig. 1 is the cross section structure schematic diagram of display screen and mirror surface dual-purpose type display device in first embodiment of the invention.Such as
Shown in Fig. 1, the display screen and mirror surface dual-purpose type display device that first embodiment of the invention provides include display panel and backlight mould
Group (indicates) that display panel is set on backlight module with BL in Fig. 1, display panel include the upper polaroid 11 set gradually,
First quarter-wave plate 12, colored filter substrate 13 (color filter), (the Thin Film of array substrate 14
Transistor), the second quarter-wave plate 15 and down polaroid 16, between colored filter substrate 13 and array substrate 14
Filled with liquid crystal layer 19.
Upper polaroid 11 and the first quarter-wave plate 12 are set on colored filter substrate 13, and the first a quarter
Wave plate 12 is set between upper polaroid 11 and colored filter substrate 13.
Down polaroid 16 and the second quarter-wave plate 15 are set in array substrate 14, and the second quarter-wave plate 15
It is set between down polaroid 16 and array substrate 14.
Upper polaroid 11 and the transmission axis of down polaroid 16 are parallel to each other, in the case where no applied voltage, liquid crystal layer 19
LCD alignment up and down orthogonal configuration.
In the present embodiment, colored filter substrate 13, relative to the setting on the position of display area 21, can with it is existing
Have identical in technology, that is, be provided with red color resistance (R), green color blocking (G) and blue color blocking (B), so that display area can be
Display state is normally shown；And in the position relative to mirror sections 22, on position corresponding with each color blocking, it is provided with opening
131, to reduce the influence to light.Between red color resistance (R), green color blocking (G), blue color blocking (B) and opening 131, also set
It is equipped with black matrix area.
It is provided with display area 21 and mirror sections 22 on a display panel.Display area 21 is provided with show electrode
(see Fig. 6), in this example it is shown that electrode includes the first show electrode 171 and the second show electrode 172, the first display electricity
Pole 171 is set to colored filter substrate 13 towards the side of array substrate 14, and the second show electrode 172 is set to array substrate
14 towards the side of colored filter substrate 13, that is, in display area 21, the first show electrode 171 and the second show electrode
172 are respectively arranged at the two sides of liquid crystal layer 19.
Mirror electrode (see Fig. 6) is provided in mirror sections 22, in the present embodiment, mirror electrode includes the first mirror surface
Electrode 181 and the second mirror electrode 182, the first mirror electrode 181 are set to colored filter substrate 13 towards array substrate 14
Side, the second mirror electrode 182 is set to array substrate 14 towards the side of colored filter substrate 13, that is, in mirror surface
Region 22, the first mirror electrode 181 and the second mirror electrode 182 are respectively arranged at the two sides of liquid crystal layer 19.Mirror electrode can be with
It is made and being coated with reflecting material on the electrode, in order to obtain preferable reflecting effect, mirror electrode forms mirror to light
Face reflection.
In the present embodiment, the first show electrode 171 and the first mirror electrode 181 can be combined as a whole, namely in coloured silk
A public electrode is formed on colo(u)r filter substrate 13.
In this example it is shown that screen and mirror surface dual-purpose type display device may include display state and two kinds of mirror status
State, the two states are realized by the control to voltage on show electrode and mirror electrode.
Fig. 2 is the display area schematic diagram that optical path is transmitted in no applied voltage in Fig. 1, and Fig. 3 is that display area exists in Fig. 1
The schematic diagram of optical path transmitting when applying voltage, Fig. 4 are the mirror sections schematic diagram that optical path is transmitted in the state of display, Fig. 5 in Fig. 1
For the schematic diagram that optical path is transmitted in mirror status of mirror sections in Fig. 1.In Fig. 2, the region A1 indicates the transmitting of incident ray
Path, the region A2 indicate the transmission path of emergent ray, when the display area 21 of display screen and mirror surface dual-purpose type display device
When show electrode is in the state of no applied voltage, the liquid crystal arrangement in liquid crystal layer 19 is not influenced by electric field, in liquid crystal layer 19
LCD alignment be still in up and down orthogonal configuration, at this point, when extraneous light inject display area 21 in when, first pass through upper polaroid 11
Linearly polarized light is formed, linearly polarized light becomes right-circularly polarized light after the first quarter-wave plate 12, due in liquid crystal layer 19
Liquid crystal be in upper and lower orthogonal configuration, right-circularly polarized light becomes right elliptically polarized light, right elliptically polarized light by the deflection of liquid crystal
Become linearly polarized light again after the second quarter-wave plate 15, the polarization direction of linearly polarized light at this time not with down polaroid
16 transmission axis is vertical, and therefore, which can pass through down polaroid 16, does not have reflection light appearance substantially.
At the same time, the backlight module of display device can project light, and the light that backlight module projects passes through down polaroid
16 become linearly polarized light, and linearly polarized light becomes left circularly polarized light after the second quarter-wave plate 15, due to liquid crystal layer 19
Interior liquid crystal is in upper and lower orthogonal configuration, and left circularly polarized light becomes left elliptically polarized light, left ellipse by the effect of liquid crystal layer 19
Polarised light becomes linearly polarized light after the first quarter-wave plate 12 again, the polarization direction of linearly polarized light at this time not with it is upper
The transmission axis of polaroid 11 is vertical, and therefore, light can be projected out of display device.
That is, when show electrode is in the state of no applied voltage, the light of backlight module can be penetrated out of display device
Out, so that illuminated state can be presented in display device when needed.
As shown in figure 3, the region B1 indicates the transmission path of incident ray, the region B2 indicates the transmission path of emergent ray,
When applying first voltage to show electrode, the liquid crystal arrangement in liquid crystal layer 19 is influenced by electric field, the long axis direction of liquid crystal
It is vertical with upper polaroid 11 and down polaroid 16, at this point, first passing through upper polaroid when extraneous light is injected in display area 21
11 form linearly polarized light, and linearly polarized light becomes right-circularly polarized light after the first quarter-wave plate 12, due to the length of liquid crystal
Axis direction is vertical with upper polaroid 11, and the presence of liquid crystal layer 19 not will cause the deflection of light, and therefore, right-circularly polarized light can be straight
It connects and is irradiated to the second quarter-wave plate 15, right-circularly polarized light becomes linear polarization after the second quarter-wave plate 15 again
The polarization direction of light, linearly polarized light at this time is vertical with the transmission axis of down polaroid 16, and therefore, the linearly polarized light is by down polaroid
16 absorb.
At the same time, the backlight module of display device can project light, and the light that backlight module projects passes through down polaroid
16 become linearly polarized light, and linearly polarized light becomes left circularly polarized light, left circularly polarized light after the second quarter-wave plate 15
Reach the first quarter-wave plate 12 after liquid crystal layer 19, left circularly polarized light after the first quarter-wave plate 12 again
Become linearly polarized light, the polarization direction of linearly polarized light at this time is vertical with the transmission axis of upper polaroid 11, on the linearly polarized light
Polaroid 11 absorbs, and therefore, light cannot be projected out of display device.
That is, the light of backlight module and the reflection light of ambient are equal when applying first voltage to show electrode
It can not be projected out of display device, so that dark-state can be presented in display device when needed.
From Fig. 2 and Fig. 3 it is found that structure through this embodiment, when display device is in display state, backlight module hair
Light, show electrode are applied first voltage as needed, thus can realize display device as needed in the state of display
The transformation of illuminated state and dark-state, and the first voltage can pass through the voltage difference of the second show electrode 172 and the first show electrode 171
And obtain, control method and principle can be identical as the control voltage of the prior art, and details are not described herein.
As shown in figure 4, the region C1 indicates that the transmission path of light when incident ray enters liquid crystal layer 19, C2 indicate incident light
The transmission path of line light after reflection, when applying first voltage to mirror electrode, liquid crystal arrangement in liquid crystal layer 19 by
Long axis direction to the influence of electric field, liquid crystal is vertical with upper polaroid 11 and down polaroid 16, at this time when ambient is across upper
Becoming linearly polarized light when polaroid 11, linearly polarized light becomes right-circularly polarized light after the first quarter-wave plate 12, due to
The long axis direction of liquid crystal is vertical with upper polaroid 11, and liquid crystal will not impact light, and therefore, right-circularly polarized light can be direct
It is irradiated on mirror electrode, right-circularly polarized light becomes left circularly polarized light after reflection, and left circularly polarized light passes through first
Again become linearly polarized light, but at this point, the polarization direction of linearly polarized light and the transmission of upper polaroid 11 when quarter-wave plate 12
Axis is vertical, which is absorbed by upper polaroid 11, and therefore, light cannot be projected out of display device.
That is, when applying first voltage to mirror electrode, mirror sections 22 do not have ambient and reflect, aobvious
Show under mode, be continuously applied first voltage to mirror electrode, mirror sections 22 do not have reflected light and appear, and will not cause to display
It influences.It is to be appreciated that the first voltage can be by the voltage difference between the second mirror electrode 182 and the first mirror electrode 181
And obtain, that is, when the first mirror electrode 181 is benchmark electrode, by the second mirror electrode 182 of control to obtain the first electricity
Pressure.
As shown in figure 5, D1 indicates the transmission path of light when incident ray enters liquid crystal layer 19；D2 indicates that second voltage is made
When total phase difference of the Cheng Guang in liquid crystal layer 19 is less than pi/2, the pipeline of light after reflection；D3 indicates second voltage
When total phase difference of the light in liquid crystal layer 19 being caused to be equal to pi/2, the pipeline of light after reflection；D4 indicates the second electricity
When pressure causes total phase difference of the light in liquid crystal layer 19 to be greater than pi/2 but be less than π, the pipeline of light after reflection.When
When ambient passes through upper polaroid 11, can become linearly polarized light can become when linearly polarized light passes through the first quarter-wave plate 12
At right-circularly polarized light, as shown in D1, when applying second voltage to mirror electrode, and second voltage causes light in liquid crystal layer 19
Total phase difference when being less than pi/2, right-circularly polarized light becomes left elliptically polarized light after liquid crystal layer 19 and reflection, and should
Left direction inclination of the major axes orientation of left elliptically polarized light into Fig. 5, the left elliptically polarized light pass through the first quarter-wave
Again become linearly polarized light when piece 12, the linearly polarized light is not vertical with the transmission axis of upper polaroid 11, when reaching upper polaroid 11
It can be passed through upper polaroid 11, realize the reflection of light；As shown in D2, when to mirror electrode apply second voltage,
And second voltage cause total phase difference of the light in liquid crystal layer 19 be equal to pi/2 when, right-circularly polarized light by liquid crystal layer 19 with
And become linearly polarized light after reflection, which becomes left circularly polarized light after the first quarter-wave plate 12, left-handed
Circularly polarized light can project after reaching upper polaroid 11 from upper polaroid 11, realize the reflection of light；As shown in D3, when to mirror surface
Electrode applies second voltage, and second voltage causes total phase difference of the light in liquid crystal layer 19 greater than pi/2 but when being less than π, right
Rounding polarised light becomes left elliptically polarized light after liquid crystal layer 19 and reflection, and the major axes orientation of the left elliptically polarized light to
The right direction of Fig. 5 tilts, which becomes linearly polarized light when passing through the first quarter-wave plate 12 again, the line
Polarised light is not vertical with the transmission axis of upper polaroid 11, can pass through upper polaroid 11 when reaching upper polaroid 11,
Realize the reflection of light.
That is, when display device is in mirror status, by applying second voltage in mirror electrode, as long as second voltage
Caused by total phase difference of the light in liquid crystal layer 19 be less than π, can be from after propagating in the liquid crystal layer 19 of light after twisting
Display device projects, and forms the reflection to ambient, then to achieve the effect that mirror surface is shown in mirror sections 22.Equally
Ground, which can be obtained by the voltage difference between the second mirror electrode 182 and the first mirror electrode 181, that is, working as
When first mirror electrode 181 is benchmark electrode, by the second mirror electrode 182 of control to obtain second voltage.
And in display area 21, backlight module no longer shines, and therefore, the light for not having backlight module projects.Display electricity
Pole no applied voltage equally there will not be reflection light injection, and therefore, display area 21 will not fill the display under mirror status
It sets and impacts, display device at this time can be used as a mirror surface and exist, object to be imaged.
In the present embodiment, when display screen and mirror surface dual-purpose type display device are in the state of display, by mirror electrode
Apply first voltage, mirror sections can be made not emit beam；By making backlight module shine, and make show electrode as needed
Change between voltage applying first voltage and not applying, so that show electrode can be shown in conversion in dark-state and illuminated state, completes aobvious
Show the display of state.；When the display device is in mirror status, by mirror electrode apply second voltage, can make into
The light for entering mirror sections 22 is projected out of display panel after reflection, at the same time, by closing backlight module, and makes to show
Show that electrode is in the state of no applied voltage, display area 21 can be made not impact to mirror sections 22, that is, can be
When mirror status, make the display device that a mirror surface is only used as to exist.
Fig. 6 is the schematic diagram of display screen and mirror surface dual-purpose type display device route arrangement in Fig. 1, as shown in fig. 6, in this reality
It applies in example, display area 21 includes multiple pixel regions, and each pixel region includes a blue subpixel areas (with B table
Show), green subpixel areas (being indicated with G) and red subpixel areas (being indicated with R), the second show electrode 172 be set to respectively
In pixel region, a corresponding mirror sections 22, the setting of the second mirror electrode 182 are provided with by each subpixel area
In in mirror sections 22.
In order to make display area 21 and mirror sections 22 can preferably realize respective function, in the present embodiment
In, the area of mirror sections 22 accounts for about the 30% to 50% of the area of display area 21.
In the present embodiment, in display area 21, the transformation of voltage can use TFT33 (Thin in the prior art
Film Transistor, thin film transistor (TFT)) mode the second show electrode 172 in display area 21 is controlled, namely
Each subpixel area, which is intersected by scan line 31 with data line 32, to be limited, and scan line 31 and data line 32 are aobvious by TFT33 and second
Show that electrode 172 is connected.
In mirror sections 22, it is additionally provided with mirror surface power supply line 34, the transformation of voltage passes through the control to mirror surface power supply line 34
It makes and obtains, unlike each sub-pixel connection type, mirror surface power supply line 34 is directly connected with the second mirror electrode 182, leads to
It crosses mirror surface power supply line 34 and voltage directly is applied to the second mirror electrode 182.In the present embodiment, the extension side of mirror surface power supply line 34
To can be identical as scan line 31, and it be set side by side with scan line 31.
Apply identical voltage for a long time in order to prevent and damage is generated to the liquid crystal in liquid crystal layer 19, in the present embodiment,
The can be applied to mirror electrode by the way of alternating current, with certain frequency under display state, such as 60Hz or 120Hz
One voltage, or under mirror status, second voltage is applied to mirror electrode with certain frequency by alternating current.
Fig. 7 is the schematic diagram of display screen and mirror surface dual-purpose type display device route arrangement in second embodiment of the invention, such as
Shown in Fig. 7, the display screen and mirror surface dual-purpose type display device and first embodiment that second embodiment of the invention provides are essentially identical,
The difference is that in the present embodiment, the extending direction of mirror surface power supply line 34 can be identical as data line 32, and and data
Line 32 is set side by side.
Fig. 8 is the schematic diagram of display screen and mirror surface dual-purpose type display device route arrangement in third embodiment of the invention, such as
Shown in Fig. 8, the display screen and mirror surface dual-purpose type display device and first embodiment that third embodiment of the invention provides are essentially identical,
The difference is that in the present embodiment, mirror surface power supply line 34 can overlap (Fig. 8 with data line 32 or scan line 31
In only show the case where overlapping with data line 32), mirror surface power supply line 34 can in the manufacturing process of array substrate 14,
It is made in a manner of third layer metal line layer in array substrate 14, between mirror surface power supply line 34 and data line 32 or scan line 31
It is formed with the first passivation layer (not shown).Such laying mode can save the space of cabling significantly.
Fig. 9 is the schematic diagram of display screen and mirror surface dual-purpose type display device route arrangement in fourth embodiment of the invention, this
The display screen that invention fourth embodiment provides and the structure of mirror surface dual-purpose type display device and first embodiment are essentially identical, no
It is with place, in the present embodiment, red subpixel areas, green subpixel areas, blue subpixel areas and mirror area
Domain 22 is laid in 2X2 matrix, and the extending direction of mirror surface power supply line 34 can be identical as data line 32, and sets side by side with data line 32
It sets.
It is to be appreciated that under above-mentioned arrangement mode, the extending direction of mirror surface power supply line 34 can also it is as shown in FIG. 6 with
Scan line 31 is identical, and is set side by side with scan line 31, equally can also be as shown in Figure 8, be directly arranged at scan line 31 or
On data line 32.
Figure 10 is the cross section structure schematic diagram of display screen and mirror surface dual-purpose type display device in fifth embodiment of the invention, such as
Shown in Figure 10, the structure and first embodiment base of display screen and mirror surface dual-purpose type display device that fifth embodiment of the invention provides
This is identical, and display panel equally includes upper polaroid 11, the first quarter-wave plate 12, colored filter substrate 13, array
Substrate 14, the second quarter-wave plate 15 and down polaroid 16, are filled between colored filter substrate 13 and array substrate 14
There is liquid crystal layer 19.Upper polaroid 11 and the transmission axis of down polaroid 16 are parallel to each other.Liquid crystal in liquid crystal layer 19 is laid in parallel.
Upper polaroid 11 and the first quarter-wave plate 12 are set on colored filter substrate 13, and the first a quarter
Wave plate 12 is set between upper polaroid 11 and colored filter substrate 13.
Down polaroid 16 and the second quarter-wave plate 15 are set in array substrate 14, and the second quarter-wave plate 15
It is set between down polaroid 16 and array substrate 14.
The difference is that in the present embodiment, the first show electrode 171, the second show electrode 172, the first mirror surface
Electrode 181 and the second mirror electrode 182 are all set in array substrate 14, and the second show electrode 172 is set to the first display electricity
On pole 171, the second mirror electrode 182 is set on the first mirror electrode 181.First show electrode 171 and the second display electricity
The second passivation layer 141 is provided between pole 172 and between the first mirror electrode 181 and the second mirror electrode 182.That is,
First show electrode 171 and the first mirror electrode 181 can be used as the public electrode of display area 21 and mirror sections 22 respectively
And exist.
In the present embodiment, when display screen and mirror surface dual-purpose type display device are in the state of display, in mirror sections 22,
By applying first voltage to mirror electrode, it can make the light into mirror sections 22 that can not but pass through mirror electrode
It is projected out of display panel after reflection；In display area 21, by making backlight module shine, and as needed to show electrode
Apply first voltage, the light of backlight module can be made to project by display area 21 so that the display device be at it is aobvious
Show state, display needs content to be shown.
It is to be appreciated that the influence according to liquid crystal layer 19 to optical path, theoretically, in display area 21, when display electricity
Extremely upper no voltage difference, i.e., when first voltage is zero, the light that backlight module issues can not be projected out of display panel, namely
Display area 21 is in dark-state at this time；When being formed with voltage difference on show electrode, i.e., when first voltage is not zero, display area 21 is in
Illuminated state.
Similarly, theoretically, in mirror sections 22, when not having voltage difference on mirror electrode, i.e. first voltage is zero
When, it is projected without light in mirror sections 22；When mirror electrode is not zero, there is light injection in mirror sections 22.
But actually, due to influencing each other between all parts in equipment, in order to guarantee in mirror status, mirror
It is projected in face region 22 without light, may have certain pressure difference on mirror electrode, i.e. first voltage can be not zero.But
As long as being to guarantee, in mirror status, it by the application of first voltage, project light can not out of mirror sections 22 i.e.
It can.
When the display device is in mirror status, by applying second voltage to mirror electrode, can make to enter mirror surface
The light in region 22 is projected out of display panel after reflection, at the same time, by closing backlight module, and makes show electrode
State in no applied voltage can be such that display area 21 does not impact to mirror sections 22, that is, can be in mirror-like
When state, make the display device that a mirror surface is only used as to exist.
In conclusion in the present invention, it, can by making show electrode and mirror electrode be respectively provided with independent control circuit
To apply voltage to show electrode and mirror electrode respectively as needed, display screen and mirror surface dual-purpose type display device are enabled to
Switch between display state and mirror status.
The present invention also provides a kind of rearview mirror, which includes that above-mentioned display screen and the display of mirror surface dual-purpose type fill
It sets, about other technical characteristics of the rearview mirror, refers to the prior art, details are not described herein.It is in aobvious in the display device
When showing state, which can be used as display screen and exists, and when the display device is in mirror status, which can be with
Exist as mirror surface, the visual field of rearview mirror will not can also be impacted while showing in-vehicle information in this way.
The above described is only a preferred embodiment of the present invention, be not intended to limit the present invention in any form, though
So the present invention has been disclosed as a preferred embodiment, and however, it is not intended to limit the invention, any technology people for being familiar with this profession
Member, without departing from the scope of the present invention, when the technology contents using the disclosure above make a little change or modification
It is right according to the technical essence of the invention for the equivalent embodiment of equivalent variations, but without departing from the technical solutions of the present invention
Any simple modification, equivalent change and modification made by above embodiments, all of which are still within the scope of the technical scheme of the invention.
Claims (10)
1. a kind of display screen and mirror surface dual-purpose type display device, it is characterised in that: including display panel, shape in the display panel
At having display area and mirror sections, it is provided with show electrode within the display area, is provided in the mirror sections
Mirror electrode, the mirror electrode are provided with and the mutually independent control circuit of the show electrode, the display screen and mirror surface
Dual-purpose type display device has display state and mirror status, is applied with first in the display state, the mirror electrode
Voltage is applied with second voltage on the mirror status, the mirror electrode.
2. display screen as described in claim 1 and mirror surface dual-purpose type display device, it is characterised in that: the display screen include according to
The upper polaroid of secondary setting, the first quarter-wave plate, colored filter substrate, array substrate, the second quarter-wave plate and
Down polaroid, is filled with liquid crystal layer between the colored filter substrate and the array substrate, the show electrode includes the
One show electrode and the second show electrode, in the display area, first show electrode and second show electrode point
It is not set to the two sides of the liquid crystal layer, the mirror electrode includes the first mirror electrode and the second mirror electrode, in the mirror
Face region, first mirror electrode and second mirror electrode are respectively arranged at the two sides of the liquid crystal layer, and described first
Mirror electrode is set to liquid crystal layer towards the side of the colored filter, and second mirror electrode is set to the liquid crystal layer
Towards the side of the array substrate, the transmission axis of the upper polaroid and the down polaroid is parallel to each other, the liquid crystal layer
LCD alignment up and down orthogonal configuration.
3. display screen as described in claim 1 and mirror surface dual-purpose type display device, it is characterised in that: the display screen include according to
The upper polaroid of secondary setting, the first quarter-wave plate, colored filter substrate, array substrate, the second quarter-wave plate and
Down polaroid, is filled with liquid crystal layer between the colored filter substrate and the array substrate, the show electrode includes the
One show electrode and the second show electrode, in the display area, first show electrode is set in the array substrate,
Second show electrode is set on first show electrode, and the mirror electrode includes the first mirror electrode and the second mirror
Face electrode, in the mirror sections, the first mirror surface motor is set in the array substrate, and second mirror electrode is set
It is placed on first mirror electrode, the transmission axis of the upper polaroid and the down polaroid is parallel to each other, the liquid crystal layer
LCD alignment it is parallel up and down.
4. display screen as claimed in claim 2 or claim 3 and mirror surface dual-purpose type display device, it is characterised in that: in the mirror surface electricity
It is extremely upper to apply first voltage, it project the light into the mirror sections can not from mirror sections again, so that described aobvious
Display screen and mirror surface dual-purpose type display device form display pattern, apply second voltage on the mirror electrode, make to enter described
The light of mirror sections can be projected from mirror sections again, so that the display screen and mirror surface dual-purpose type display device form mirror
Surface model.
5. display screen as claimed in claim 4 and mirror surface dual-purpose type display device, it is characterised in that: when the display screen and mirror
When face dual-purpose type display device is in the display pattern, the display screen and mirror surface dual-purpose type display device pass through alternating current
Form applies first voltage to the mirror electrode；When the display screen and mirror surface dual-purpose type display device are in the mirror surface mould
When formula, the display screen and mirror surface dual-purpose type display device apply the second electricity to the mirror electrode by way of alternating current
Pressure.
6. display screen as claimed in claim 4 and mirror surface dual-purpose type display device, it is characterised in that: on the mirror electrode
Apply the second voltage, to cause total phase difference of the light in the liquid crystal layer to be less than π.
7. display screen as claimed in claim 2 or claim 3 and mirror surface dual-purpose type display device, it is characterised in that: the display screen with
Mirror surface dual-purpose type display device includes data line, scan line and mirror surface power supply line, and the data line and the scan line pass through TFT
It is connected with second show electrode, the mirror surface power supply line is connected with second mirror electrode, passes through the mirror surface power supply
Line applies voltage to the mirror electrode.
8. display screen as claimed in claim 7 and mirror surface dual-purpose type display device, it is characterised in that: the display area includes
Multiple pixel regions, each pixel region include red subpixel areas, blue subpixel areas and green sub-pixels area
Domain, each subpixel area are limited by the scan line and data line intersection, the extending direction of the mirror surface power supply line and institute
It is identical to state scan line, and is set side by side with the scan line, alternatively, the extending direction of the mirror surface power supply line and the data line
It is identical, and be set side by side with the data line, alternatively, the mirror surface power supply line is overlapped with the scan line or data line.
9. display screen as described in claim 1 and mirror surface dual-purpose type display device, it is characterised in that: the display area includes
Multiple pixel regions, each pixel region include red subpixel areas, blue subpixel areas and green sub-pixels area
Domain is provided with the corresponding mirror sections or the red subpixel areas, institute by each subpixel area
Blue subpixel areas, the green subpixel areas and the mirror sections are stated to lay in 2X2 matrix.
10. a kind of rearview mirror, it is characterised in that: include display described in any one of the claims 1 to claim 9
Screen and mirror surface dual-purpose type display device.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811361963.9A CN109515326B (en) | 2018-11-15 | 2018-11-15 | Display screen and mirror surface dual-purpose display device and rearview mirror with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811361963.9A CN109515326B (en) | 2018-11-15 | 2018-11-15 | Display screen and mirror surface dual-purpose display device and rearview mirror with same |
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| CN109515326A true CN109515326A (en) | 2019-03-26 |
| CN109515326B CN109515326B (en) | 2020-09-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN110412792A (en) * | 2019-07-02 | 2019-11-05 | 昆山龙腾光电有限公司 | The display panel and vehicle mirrors that transmission and mirror surface can be switched |
| TWI706200B (en) * | 2019-05-16 | 2020-10-01 | 友達光電股份有限公司 | Optical apparauts |
| CN113326014A (en) * | 2021-06-22 | 2021-08-31 | 北京京东方技术开发有限公司 | Display device, display control method and storage medium |
| CN115004095A (en) * | 2020-12-04 | 2022-09-02 | 京东方科技集团股份有限公司 | Mirror face switching screen, manufacturing method thereof and display device |
| CN113326014B (en) * | 2021-06-22 | 2024-04-26 | 北京京东方技术开发有限公司 | Display device, display control method and storage medium |
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| TWI706200B (en) * | 2019-05-16 | 2020-10-01 | 友達光電股份有限公司 | Optical apparauts |
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| CN115004095B (en) * | 2020-12-04 | 2023-11-03 | 京东方科技集团股份有限公司 | Mirror surface switching screen, manufacturing method thereof and display device |
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Also Published As
| Publication number | Publication date |
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| CN109515326B (en) | 2020-09-29 |
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