CN110412792B - Display panel with switchable transmission and mirror surfaces and vehicle rearview mirror - Google Patents
Display panel with switchable transmission and mirror surfaces and vehicle rearview mirror Download PDFInfo
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- CN110412792B CN110412792B CN201910591698.1A CN201910591698A CN110412792B CN 110412792 B CN110412792 B CN 110412792B CN 201910591698 A CN201910591698 A CN 201910591698A CN 110412792 B CN110412792 B CN 110412792B
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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
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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
- B60R1/12—Mirror assemblies combined with other articles, e.g. clocks
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133528—Polarisers
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/13363—Birefringent elements, e.g. for optical compensation
-
- 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
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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
- B60R1/12—Mirror assemblies combined with other articles, e.g. clocks
- B60R2001/1215—Mirror assemblies combined with other articles, e.g. clocks with information displays
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/13363—Birefringent elements, e.g. for optical compensation
- G02F1/133638—Waveplates, i.e. plates with a retardation value of lambda/n
Abstract
The invention discloses a display panel with switchable transmission and mirror surfaces, which comprises a first substrate, a liquid crystal layer and a second substrate from top to bottom, wherein a plurality of pixel units are formed on the second substrate, the first substrate is provided with a first polaroid and a first quarter-wave plate, the fast and slow axis of the first quarter-wave plate and the transmission axis of the first polaroid form 45 degrees, the second substrate is provided with a second polaroid and a second quarter-wave plate, the fast and slow axis of the second quarter-wave plate and the transmission axis of the second polaroid form 45 degrees, each pixel unit comprises a transmission region and a reflection region, the second substrate is provided with a reflection electrode, and one side of the first substrate and one side of the second substrate are provided with auxiliary electrodes; when voltage is applied to the reflecting electrode and the auxiliary electrode, the reflecting area is opened, the pixel electrode does not apply voltage at the moment, and the transmission area is closed; when no voltage is applied to the reflecting electrode and the auxiliary electrode, the reflecting area is closed, the pixel electrode and the common electrode apply voltage, and the transmitting area is opened. The invention also discloses a vehicle rearview mirror.
Description
Technical Field
The invention relates to the technical field of liquid crystal display, in particular to a display panel with switchable transmission and mirror surfaces and a vehicle rearview mirror.
Background
The increasing complexity and information density of automotive information systems has led to the display of automotive interior displays no longer being the basic focus on the display of instruments, but rather to meet the increasingly detailed and diversified display requirements of automotive interior information.
As the price of liquid crystal is decreasing, the specifications of in-vehicle displays are gradually surpassing those of conventional large display panels, and the development speed thereof is increasing. The external functionalization of Advanced Driving Assistance Systems (ADAS), the popularization of rear view display systems using rear cameras in the united states, and the relaxation of regulations for cameras equipped on side mirrors and rear mirrors have required new display functions in automobiles. In-vehicle displays need to have different consumer uses and capabilities. In addition to the basic performance parameters, there is a need to improve the design and provide in-vehicle displays that do not interfere with driving information.
In order to meet the increasingly detailed and diversified in-vehicle information display demands. One of the solutions in the prior art is to add a vehicle mirror display panel on the vehicle rearview mirror, but the installation of the vehicle mirror display panel will affect the original rearview function of the vehicle rearview mirror, and reduce the driving safety; or, a layer of reflecting film is pasted on the display panel to be used as a mirror, but mirror image ghost images are easy to occur under ambient light, and display information is influenced; alternatively, a double box thickness design is adopted, but the specular reflection is weakened, and the thickness and the cost process difficulty are increased.
Disclosure of Invention
In order to overcome the defects and shortcomings in the prior art, the invention aims to provide a display panel with switchable transmission and mirror surfaces and a vehicle rearview mirror, so as to solve the problems of poor display effect, thick thickness and high cost of the display panel with switchable transmission and mirror surfaces in the prior art.
The purpose of the invention is realized by the following technical scheme:
the invention provides a display panel with switchable transmission and mirror surfaces, which comprises a first substrate, a second substrate arranged opposite to the first substrate, and a liquid crystal layer positioned between the first substrate and the second substrate, wherein the second substrate is defined by a plurality of scanning lines and a plurality of data lines which are mutually insulated and crossed on one side facing the liquid crystal layer to form a plurality of pixel units, each pixel unit is internally provided with a pixel electrode and a thin film transistor, the pixel electrode is connected with the corresponding scanning line and the corresponding data line through the thin film transistor, the second substrate is also provided with a first common electrode, the first substrate is provided with a first polaroid on one side far away from the liquid crystal layer, the second substrate is provided with a second polaroid on one side far away from the liquid crystal layer, the transmission axes of the first polaroid and the second polaroid are mutually vertical, and a first quarter-wave plate is arranged between the first substrate and the first polaroid, the fast and slow axis of the first quarter-wave plate is 45 degrees with the transmission axis of the first polaroid, a second quarter-wave plate is arranged between the second substrate and the second polaroid, the fast and slow axis of the second quarter-wave plate is 45 degrees with the transmission axis of the second polaroid, each pixel unit comprises a transmission area and a reflection area, the pixel electrode corresponds to the transmission area, the reflection area on the second substrate corresponding to each pixel unit is provided with a reflection electrode, and one side of the first substrate and one side of the second substrate are provided with auxiliary electrodes matched with the reflection electrodes;
when a preset voltage is applied to the reflecting electrode and the auxiliary electrode, the liquid crystal layer corresponding to the reflecting area is equivalent to a quarter-wave plate and has a phase delay of lambda/4, the reflecting area is opened, the pixel electrode does not apply the voltage at the moment, and the transmission area is closed; when no voltage is applied to the reflecting electrode and the auxiliary electrode, the liquid crystal layer corresponding to the reflecting area has no phase delay, the reflecting area is closed, and when the pixel electrode and the first common electrode apply corresponding voltage, the transmitting area is opened.
Further, the transmissive region and the reflective region are spaced apart by a black matrix.
Furthermore, the alignment direction of one side of the first substrate is antiparallel to the alignment direction of one side of the second substrate, and the fast and slow axes of the first quarter-wave plate are parallel to the fast and slow axes of the second quarter-wave plate.
Furthermore, the reflective electrode penetrates through a row of the pixel units along the scanning line direction and corresponds to the plurality of reflective regions, and the region of the first substrate corresponding to the reflective regions is in a transparent state.
Furthermore, the first common electrode and the pixel electrode are located at different layers, the first common electrode is of a whole-surface structure, and the pixel electrode is a comb-shaped electrode with a slit.
The invention also provides a display panel with switchable transmission and mirror surfaces, which comprises a first substrate, a second substrate arranged opposite to the first substrate and a liquid crystal layer positioned between the first substrate and the second substrate, wherein the second substrate is defined by a plurality of scanning lines and a plurality of data lines which are mutually insulated and crossed on one side facing the liquid crystal layer to form a plurality of pixel units, each pixel unit is internally provided with a pixel electrode and a thin film transistor, the pixel electrode is connected with the corresponding scanning line and the corresponding data line through the thin film transistor, the second substrate (20) is also provided with a first common electrode, the first substrate is also provided with a second common electrode, the first substrate is provided with a first polaroid on one side far away from the liquid crystal layer, the second substrate is provided with a second polaroid on one side far away from the liquid crystal layer, and the transmission axes of the first polaroid and the second polaroid are mutually vertical, a first quarter-wave plate is arranged between the first substrate and the first polaroid, the fast and slow axis of the first quarter-wave plate and the transmission axis of the first polaroid are 45 degrees, a second quarter-wave plate is arranged between the second substrate and the second polaroid, the fast and slow axis of the second quarter-wave plate and the transmission axis of the second polaroid are 45 degrees, each pixel unit comprises a transmission region and a reflection region, the pixel electrode corresponds to the transmission region, and the reflection region corresponding to each pixel unit on the second substrate is provided with a reflection electrode;
when a preset voltage is applied to the reflecting electrode and the second common electrode, the liquid crystal layer corresponding to the reflecting area has no phase delay, the reflecting area is closed, the pixel electrode does not apply the voltage at the moment, and the transmission area is opened; when no voltage is applied to the reflecting electrode, the liquid crystal layer corresponding to the reflecting area is equivalent to a quarter-wave plate and has a phase delay of lambda/4, the reflecting area is opened, the pixel electrode and the second common electrode apply corresponding voltage, and the transmitting area is closed.
Further, the transmissive region and the reflective region are spaced apart by a black matrix.
Furthermore, the alignment direction of one side of the first substrate is perpendicular to the alignment direction of one side of the second substrate, and the fast and slow axes of the first quarter-wave plate are perpendicular to the fast and slow axes of the second quarter-wave plate.
Furthermore, the reflective electrode penetrates through a row of the pixel units along the scanning line direction and corresponds to the plurality of reflective regions, and the region of the first substrate corresponding to the reflective regions is in a transparent state.
The invention also provides a vehicle rearview mirror which is the display panel with switchable transmission and mirror surfaces.
The invention has the beneficial effects that: the pixel structure comprises a first substrate, a second substrate, a first polarizer, a first quarter-wave plate, a second polarizer, a second quarter-wave plate, a reflection electrode and an auxiliary electrode, wherein the first polarizer and the first quarter-wave plate are arranged on the first substrate, the fast and slow axis of the first quarter-wave plate is 45 degrees to the transmission axis of the first polarizer, the second polarizer and the second quarter-wave plate are arranged on the second substrate, the fast and slow axis of the second quarter-wave plate is 45 degrees to the transmission axis of the second polarizer, the transmission axes of the first polarizer and the second polarizer are mutually vertical, each pixel unit comprises a transmission area and a reflection area, a pixel electrode corresponds to the transmission area, the reflection area corresponding to each pixel unit on the second substrate is provided with the reflection electrode, and one side of the first substrate and the second substrate is provided with the auxiliary electrode matched with the reflection electrode; when preset voltage is applied to the reflecting electrode and the auxiliary electrode, the liquid crystal layer corresponding to the reflecting area is equivalent to a quarter-wave plate and has lambda/4 phase delay, the reflecting area is opened, the pixel electrode does not apply voltage at the moment, and the transmission area is closed; when no voltage is applied to the reflecting electrode and the auxiliary electrode, the liquid crystal layer corresponding to the reflecting area has no phase delay, the reflecting area is closed, the pixel electrode and the first common electrode apply corresponding voltage, and the transmission area is opened. Through exert predetermined voltage on reflection electrode and auxiliary electrode, make the liquid crystal molecule in the liquid crystal layer that the reflecting region corresponds deflect to the angle that has lambda/4 phase delay, thereby realize the bright and dark switching of reflecting region, make display panel have the changeable function of transmission and mirror surface, thereby need not additionally install the display screen additional, change the display mode at any time according to user's demand, single box thickness design is small, can make in traditional display panel processing procedure, and the processing procedure is more simple than other transflective mode.
Drawings
Fig. 1 is a schematic plan view illustrating a first substrate according to a first embodiment of the invention;
FIG. 2 is a schematic plan view illustrating a second substrate according to one embodiment of the present invention;
FIG. 3 is a schematic circuit diagram of a reflective electrode according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of the circuit connection of the auxiliary electrode according to one embodiment of the present invention;
FIG. 5 is a schematic structural diagram of a display panel with switchable transmission and mirror planes in an initial state according to a first embodiment of the present invention;
FIG. 6 is a schematic diagram of a display panel with switchable transmission and mirror planes in a reflective state according to a first embodiment of the present invention;
FIG. 7 is a schematic illustration of the reflective region of FIG. 6;
FIG. 8 is a schematic structural diagram of a display panel switchable between transmission and mirror in a transmission state according to a first embodiment of the present invention;
FIG. 9 is a schematic diagram of the reflective region of FIG. 8;
FIG. 10 is a schematic diagram of the transmissive region of FIG. 8;
FIG. 11 is a schematic plan view of a first substrate according to a second embodiment of the present invention;
FIG. 12 is a schematic plan view of a second substrate according to a second embodiment of the present invention;
FIG. 13 is a schematic circuit diagram of the auxiliary electrode according to the second embodiment of the present invention;
fig. 14 is a schematic structural diagram of a display panel in which the transmission and the mirror are switchable according to a second embodiment of the present invention in an initial state;
FIG. 15 is a schematic structural diagram of a display panel switchable between transmission and mirror in a reflective state according to a second embodiment of the present invention;
fig. 16 is a schematic structural diagram of a display panel in which transmission and mirror surfaces are switchable according to a second embodiment of the present invention;
FIG. 17 is a schematic structural diagram of a display panel switchable between transmission and mirror in a reflective state according to a third embodiment of the present invention;
FIG. 18 is a schematic illustration of the reflective region of FIG. 17;
FIG. 19 is a schematic structural diagram of a display panel switchable between transmission and mirror in a transmission state according to a third embodiment of the present invention;
FIG. 20 is a schematic view of the reflective region of FIG. 19;
fig. 21 is a schematic view of the transmissive region of fig. 19.
Detailed Description
To further illustrate the technical means and effects of the present invention adopted to achieve the predetermined objects, the following detailed description will be made on specific embodiments, structures, features and effects of the display panel and the vehicle rearview mirror with switchable transmission and mirror surfaces according to the present invention with reference to the accompanying drawings and preferred embodiments:
[ example one ]
Fig. 1 is a schematic structural diagram of a first substrate in the present invention, fig. 2 is a schematic partial structural diagram of a second substrate in the present invention, fig. 3 is a schematic circuit connection diagram of a reflective electrode in a first embodiment of the present invention, fig. 4 is a schematic circuit connection diagram of an auxiliary electrode in a first embodiment of the present invention, fig. 5 is a schematic structural diagram of a display panel in which transmission and mirror surfaces are switchable in an initial state in a first embodiment of the present invention, fig. 6 is a schematic structural diagram of a display panel in which transmission and mirror surfaces are switchable in a reflective state in a first embodiment of the present invention, fig. 7 is a schematic structural diagram of a reflective region in fig. 6, fig. 8 is a schematic structural diagram of a display panel in which transmission and mirror surfaces are switchable in a transmissive state in a first embodiment of the present invention, fig. 9 is a schematic structural diagram of a reflective region in fig. 8, and fig. 10 is a schematic structural diagram of a transmissive region in fig. 8.
As shown in fig. 1 to 10, a display panel switchable between transmission and mirror surfaces according to a first embodiment of the present invention includes a first substrate 10, a second substrate 20 disposed opposite to the first substrate 10, and a liquid crystal layer 30 disposed between the first substrate 10 and the second substrate 20, liquid crystal molecules in the liquid crystal layer 30 are positive liquid crystal molecules (liquid crystal molecules with positive dielectric anisotropy), as shown in fig. 5, in an initial state, the liquid crystal molecules in the liquid crystal layer 30 are positive liquid crystal molecules and are in a lying posture, an alignment direction of a side of the first substrate 10 is antiparallel to an alignment direction of a side of the second substrate 20, that is, the positive liquid crystal molecules near the first substrate 10 are antiparallel to the alignment direction of the positive liquid crystal molecules near the second substrate 20.
The second substrate 20 is defined by a plurality of scan lines 1 and a plurality of data lines 2 crossing each other in an insulated manner on a side facing the liquid crystal layer 30 to form a plurality of pixel units P, each pixel unit P is provided with a pixel electrode 23 and a thin film transistor 3, the pixel electrode 23 is connected with the corresponding scan line 1 and data line 2 through the thin film transistor 3, and the second substrate 20 is further provided with a first common electrode 21. In this embodiment, the first common electrode 21 and the pixel electrode 23 are located at different layers and separated by the insulating layer 22, the first common electrode 21 is a whole-surface structure, and the pixel electrode 23 is a comb-shaped electrode with slits. The first common electrode 21 may be located above or below the pixel electrode 23 (the first common electrode 21 is located below the pixel electrode 23 as shown in fig. 5), and preferably, the first common electrode 21 is a planar electrode disposed over the entire surface, and the pixel electrode 23 is a block electrode disposed in one piece in each pixel region or a slit electrode having a plurality of electrode bars to form a Fringe Field Switching (FFS) mode. Of course, In other embodiments, the pixel electrode 23 and the first common electrode 21 are located on the same layer, but they are insulated and isolated from each other, and each of the pixel electrode 23 and the first common electrode 21 may include a plurality of electrode stripes, and the electrode stripes of the pixel electrode 23 and the electrode stripes of the first common electrode 21 are alternately arranged with each other to form an In-Plane Switching (IPS) mode.
The first substrate 10 is provided with a first polarizer 41 at a side far from the liquid crystal layer 30, the second substrate 20 is provided with a second polarizer 42 at a side far from the liquid crystal layer 30, transmission axes of the first polarizer 41 and the second polarizer 42 are perpendicular to each other, a first quarter-wave plate 51 is arranged between the first substrate 10 and the first polarizer 41, a fast-slow axis of the first quarter-wave plate 51 is 45 degrees to the transmission axis of the first polarizer 41, a second quarter-wave plate 52 is arranged between the second substrate 20 and the second polarizer 42, a fast-slow axis of the second quarter-wave plate 52 is 45 degrees to the transmission axis of the second polarizer 42, a fast-slow axis of the first quarter-wave plate 51 is parallel to a fast-slow axis of the second quarter-wave plate 52, each pixel unit P comprises a transmission region T and a reflection region R, the pixel electrode 23 corresponds to the transmission region T, the reflection electrode 24 is arranged on the second substrate 20 corresponding to the reflection region R of each pixel unit P, one side of the first substrate 10 and the second substrate 20 is provided with an auxiliary electrode 14 matched with the reflective electrode 24. In this embodiment, the auxiliary electrode 14 is disposed on the first substrate 10, the reflective electrode 24 and the pixel electrode 23 are disposed on the same layer and isolated from each other, and the auxiliary electrode 14 and the reflective electrode 24 have the same pattern and are aligned up and down. The reflective electrodes 24 penetrate through a row of pixel units P along the direction of the scan line 1 and correspond to the plurality of reflective regions R, as shown in fig. 3, the plurality of reflective electrodes 24 are electrically connected together in the non-display region and apply the same electrical signal, as shown in fig. 4, the plurality of auxiliary electrodes 14 are electrically connected together in the non-display region and apply the same electrical signal, for example, electrode strips are formed on both sides of the second substrate 20, the reflective electrodes 24 are electrically connected to the electrode strips through via holes, the electrode strips are further connected to a control chip to control all the reflective electrodes 24 to apply the same signal, electrode strips are formed on both sides of the first substrate 10, the auxiliary electrodes 14 are electrically connected to the electrode strips through via holes, and the electrode strips are further connected to the control chip to control all the auxiliary electrodes 14 to apply the same signal. Of course, in other embodiments, the reflective electrode 24 may further include a plurality of reflective electrode blocks, one reflective electrode block and two thin film transistors 3 are disposed in each pixel unit P, the reflective electrode block is connected to the scan line 1 and the data line 2 of the adjacent thin film transistor 3 through one of the thin film transistors 3, the pixel electrode 23 is connected to the scan line 1 and the data line 2 of the adjacent thin film transistor 3 through the other thin film transistor 3, and a voltage applied to each reflective electrode block may be independently controlled, so as to control the number of on or off reflective regions R on the display panel and the size of the reflective area, but not limited thereto. In the present embodiment, the first common electrode 21 forms both a deflection electric field with the pixel electrode 23 and a storage capacitance with the pixel electrode 23 and the reflective electrode 24.
As shown in fig. 1, the first substrate 10 is further provided with a black matrix 11 and a color resistance material layer 12, the color resistance material layer 12 includes color resistance materials of three colors of red (R), green (G), and blue (B), and correspondingly forms sub-pixels of three colors of red (R), green (G), and blue (B), the transmissive region T and the reflective region R are spaced apart by the black matrix 11, the transmissive region T is correspondingly provided with the color resistance material layer 12, the reflective region R is covered and transparent by the flat layer 13, that is, the color resistance material is not provided, and the auxiliary electrode 14 covers the flat layer 13.
The first substrate 10 is a color film substrate, the second substrate 20 is an array substrate, and the first substrate 10 and the second substrate 20 may be made of glass, acrylic acid, polycarbonate, and other materials. The first common electrode 21, the pixel electrode 23 and the auxiliary electrode 14 may be made of Indium Tin Oxide (ITO) or Indium Zinc Oxide (IZO), and the reflective electrode 24 may be made of metal material with good reflectivity such as AL or Ag.
As shown in fig. 6, when the display panel is in the reflective state, the backlight source may be turned off, no voltage is applied to the first common electrode 21 and the pixel electrode 23, and the transmissive region T is in the dark state, i.e., in the off state; a predetermined voltage is applied to the reflective electrode 24 and the auxiliary electrode 14, so that a large voltage difference (e.g. 3V) is formed between the reflective electrode 24 and the auxiliary electrode 14, and the positive liquid crystal molecules between the reflective electrode 24 and the auxiliary electrode 14 are deflected to a certain extent, so that the liquid crystal layer 30 corresponding to the reflective region R is equivalent to a quarter-wave plate and has a phase retardation of λ/4, that is, the effective phase retardation of the liquid crystal layer 30 corresponding to the reflective region R is λ/4, and at this time, the reflective region R is in a bright state, that is, in an on state.
The formula of the effective phase retardation of the liquid crystal layer 30 is:
wherein theta is the included angle between the polarization light propagation direction and the liquid crystal optical axis direction, and n e Is an extraordinary refractive index, n 0 Refractive index of normal light, Δ n eff For effective birefringence, d is the cell thickness.
From the above formula, when the liquid crystal cell is thick for a certain period, the deflection angle of the positive liquid crystal molecules can be changed by applying a predetermined voltage to the reflective electrode 24 and the auxiliary electrode 14, and when the deflection angle reaches a specific value, the effective phase retardation of the liquid crystal layer 30 is λ/4.
As shown in fig. 7, ambient light passes through the first polarizer 41 to form linearly polarized light parallel to the transmission axis of the first polarizer 41, passes through the first quarter-wave plate 51 to form circularly polarized light (dextrorotation), passes through the liquid crystal layer 30 having λ/4 to form linearly polarized light parallel to the transmission axis of the first polarizer 41, passes through the reflective electrode 24 and passes through the liquid crystal layer 30 having λ/4 to form circularly polarized light (dextrorotation), passes through the first quarter-wave plate 51 to form linearly polarized light parallel to the transmission axis of the first polarizer 41 and passes through the first polarizer 41, thereby implementing reflective display, and the display panel is used as a reflective mirror.
As shown in fig. 8, when the display panel is in the transmissive state, the backlight is turned on, no voltage is applied to the reflective electrode 24 and the auxiliary electrode 14, the liquid crystal layer 30 corresponding to the reflective region R has no phase retardation, and the reflective region R is in the dark state, i.e., in the off state; the first common electrode 21 and the pixel electrode 23 are applied with corresponding voltages to form a large voltage difference (for example, 3V) between the first common electrode 21 and the pixel electrode 23, the positive liquid crystal molecules corresponding to the transmissive region T are deflected to a certain extent, the liquid crystal layer 30 corresponding to the transmissive region T is equivalent to a half-wave plate and has a phase retardation of λ/2, and at this time, the transmissive region T is in a bright state, i.e., an on state, and different gray scale voltages are applied to the pixel electrode 23 to realize different gray scale displays, so as to display normal pictures. In this embodiment, the voltage applied by the reflective electrode 24 is switched between the bright state and the dark state, i.e. the applied voltages are the dark state voltage value and the bright state voltage value, and the pixel electrode 23 applies the corresponding gray scale voltages of 0-255.
As shown in fig. 9, for the reflection region R, the external ambient light passes through the first polarizer 41 to form linearly polarized light parallel to the transmission axis of the first polarizer 41, passes through the first quarter-wave plate 51 to form circularly polarized light (dextrorotation), passes through the liquid crystal layer 30 without phase deflection, passes through the reflection electrode 24 to remain circularly polarized light (levorotation), but has opposite rotation directions, passes through the liquid crystal layer 30 and passes through the first quarter-wave plate 51 to form linearly polarized light perpendicular to the transmission axis of the first polarizer 41, and is absorbed by the first polarizer 41, and the reflection region R is in a dark state. As shown in fig. 10, in the transmission region T, light of the backlight passes through the second polarizer 42 to form linearly polarized light parallel to the transmission axis of the second polarizer 42, passes through the second quarter-wave plate 52 to form circularly polarized light (left-handed), passes through the liquid crystal layer 30 with λ/2 phase retardation to form circularly polarized light (right-handed), passes through the first quarter-wave plate 51 to form linearly polarized light parallel to the transmission axis of the first polarizer 41, and exits the first polarizer 41, so that transmission display is achieved, and a normal picture can be displayed.
According to the invention, the preset voltage is applied to the reflecting electrode and the auxiliary electrode, so that liquid crystal molecules in the liquid crystal layer corresponding to the reflecting region are deflected to an angle with lambda/4 phase delay, the bright-dark switching of the reflecting region is realized, the display panel has the function of switching between transmission and mirror surfaces, a display screen is not additionally arranged, the display mode is changed at any time according to the requirement of a user, the single box thickness design is small in size, the box thickness of the reflecting region R is not required to be set to be half of that of the transmission region T, the display panel can be manufactured in the conventional display panel manufacturing process, and the manufacturing process is simpler than other transflective modes.
[ example two ]
Fig. 11 is a schematic plan view illustrating a first substrate according to a second embodiment of the present invention, fig. 12 is a schematic plan view illustrating a second substrate according to the second embodiment of the present invention, fig. 13 is a schematic circuit diagram illustrating an auxiliary electrode according to the second embodiment of the present invention, fig. 14 is a schematic plan view illustrating a display panel in which a transmission and a mirror are switchable according to the second embodiment of the present invention in an initial state, fig. 15 is a schematic plan view illustrating a display panel in which a transmission and a mirror are switchable according to the second embodiment of the present invention in a reflective state, and fig. 16 is a schematic plan view illustrating a display panel in which a transmission and a mirror are switchable according to the second embodiment of the present invention in a transmissive state. As shown in fig. 11 to 16, a display panel switchable between transmission and mirror according to a second embodiment of the present invention is substantially the same as the display panel switchable between transmission and mirror according to the first embodiment (fig. 1 to 10), except that, in this embodiment, the auxiliary electrode 14 is located on the second substrate 20, the auxiliary electrode 14 is aligned with the reflective electrode 24 up and down, the reflective electrode 24 is a strip-shaped electrode without slits, the auxiliary electrode 14 is a comb-shaped electrode with slits, the reflective electrode 24 covers the first common electrode 21 and applies the same electrical signal as the first common electrode 21, the auxiliary electrode 14 is located on the same layer as the pixel electrode 23 and is isolated from the pixel electrode, as shown in fig. 13, electrode strips are formed on two sides of the second substrate 20, the auxiliary electrodes 14 are electrically connected to the electrode strips through via holes, and the electrode strips are further connected to a control chip to control all the auxiliary electrodes 14 to apply the same signal.
In this embodiment, compared to the first embodiment, the manufacturing process of the first substrate 10 can be reduced, and the auxiliary electrode 14 and the pixel electrode 23 on the second substrate 20 can be manufactured by the same mask process, so that the manufacturing difficulty of the display panel can be reduced and the manufacturing cost can be reduced.
It should be understood by those skilled in the art that the rest of the structure and the operation principle of the present embodiment are the same as those of the first embodiment, and are not described herein again.
[ third example ]
Fig. 17 is a schematic structural diagram of a display panel switchable between transmission and mirror in a reflective state in a third embodiment of the present invention, fig. 18 is a schematic structural diagram of a reflective region in fig. 17, fig. 19 is a schematic structural diagram of a display panel switchable between transmission and mirror in a transmissive state in a third embodiment of the present invention, fig. 20 is a schematic structural diagram of a reflective region in fig. 19, and fig. 21 is a schematic structural diagram of a transmissive region in fig. 19. As shown in fig. 17 to 21, a display panel switchable between transmission and mirror in the third embodiment of the present invention is substantially the same as the display panel switchable between transmission and mirror in the first embodiment (fig. 5 to 10), except that in this embodiment, the auxiliary electrode 14 is not required to be disposed, the second common electrode 15 is further disposed on the first substrate 10, and the pixel electrode 23 is a block electrode. As shown in fig. 17, in the initial state, the liquid crystal molecules in the first liquid crystal layer 30 are positive liquid crystal molecules and are in a lying posture, and the alignment direction of the first substrate 10 side is perpendicular to the alignment direction of the second substrate 20 side, so that the positive liquid crystal molecules in the liquid crystal layer 30 are in a twisted arrangement state to form a TN display mode, in this embodiment, the fast and slow axes of the first quarter-wave plate 51 are perpendicular to the fast and slow axes of the second quarter-wave plate 52. In the present embodiment, the first common electrode 21 forms a storage capacitance with the pixel electrode 23 and the reflective electrode 24, and the second common electrode 15 forms a deflection electric field with the pixel electrode 23 and the reflective electrode 24.
As shown in fig. 17, when the display panel is in a reflective state, that is, in an initial state, the backlight source may be turned off, no voltage is applied to the first common electrode 21, the second common electrode 15, the reflective electrode 24, and the pixel electrode 23, and the transmissive region T is in a dark state, that is, in an off state; the liquid crystal layer 30 corresponding to the reflective region R is equivalent to a quarter-wave plate and has a phase retardation of λ/4, and the reflective region R is in a bright state, i.e., an on state. Referring to the formula (i) in the first embodiment, it can be seen from the formula that when the effective birefringence is constant, the effective phase retardation of the liquid crystal layer 30 can be changed by changing the thickness of the liquid crystal cell, and when the thickness of the liquid crystal cell is set to a specific thickness, the effective phase retardation of the liquid crystal layer 30 is λ/4.
As shown in fig. 18, for the reflective region R, ambient light passes through the first polarizer 41 to form linearly polarized light parallel to the transmission axis of the first polarizer 41, passes through the first quarter-wave plate 51 to form circularly polarized light (dextrorotation), passes through the liquid crystal layer 30 with λ/4 phase retardation to form linearly polarized light parallel to the transmission axis of the first polarizer 41, passes through the reflective electrode 24, passes through the liquid crystal layer 30 to form circularly polarized light (dextrorotation), passes through the first quarter-wave plate 51 to form linearly polarized light parallel to the transmission axis of the first polarizer 41, and passes through the first polarizer 41, so as to implement reflective display, and the display panel is used as a reflective mirror.
As shown in fig. 19, when the display panel is in a transmissive state, at this time, the backlight source is turned on, corresponding voltages are applied to the first common electrode 21, the second common electrode 15, the reflective electrode 24 and the pixel electrode 23, a large voltage difference (for example, 3V) is formed between the second common electrode 15 and the reflective electrode 24, corresponding positive liquid crystal molecules between the second common electrode 15 and the reflective electrode 24 are greatly deflected and assume a standing posture, the liquid crystal layer 30 corresponding to the reflective region R has no phase retardation, and the reflective region R assumes a dark state, that is, an off state; when the transmissive region T displays 255 gray scales, the pixel electrode 23 applies a corresponding voltage of 255 gray scales, the positive liquid crystal molecules corresponding to the transmissive region T are not substantially deflected, the transmissive region T displays 255 gray scales, when the transmissive region T displays 0 gray scale, the pixel electrode 23 applies a corresponding voltage of 0 gray scale, a large voltage difference (for example, 3V) is formed between the pixel electrode 23 and the second common electrode 15, the positive liquid crystal molecules corresponding to the transmissive region T are greatly deflected and are in a standing posture, and the transmissive region T displays 0 gray scale. The pixel electrodes 23 are applied with different voltages and display corresponding to different gray levels, i.e., turned on, to display a normal picture.
As shown in fig. 20, for the reflection region R, the external ambient light passes through the first polarizer 41 to form linearly polarized light parallel to the transmission axis of the first polarizer 41, passes through the first quarter-wave plate 51 to form circularly polarized light (dextrorotation), passes through the liquid crystal layer 30 without phase deflection, passes through the reflection electrode 24 to remain circularly polarized light (levorotation), but the rotation direction is opposite, passes through the liquid crystal layer 30, passes through the first quarter-wave plate 51 to form linearly polarized light perpendicular to the transmission axis of the first polarizer 41, and is absorbed by the first polarizer 41, and the reflection region R is in a dark state. As shown in fig. 21, in the transmission region T, light of the backlight passes through the second polarizer 42 to form linearly polarized light parallel to the transmission axis of the second polarizer 42, passes through the second quarter-wave plate 52 to form circularly polarized light (left-handed), passes through the liquid crystal layer 30 with λ/4 phase retardation to form linearly polarized light parallel to the second polarizer 42, passes through the first quarter-wave plate 51 to form circularly polarized light (left-handed), and the circularly polarized light is not perpendicular to the transmission axis of the first polarizer 41 and exits the first polarizer 41, so that transmission display is achieved, and a normal picture can be displayed.
Compared with the first embodiment, in the present embodiment, no voltage is applied in the reflective state, and the transmissive region T is also in the normally white state, so that the power consumption of the display panel can be reduced.
It should be understood by those skilled in the art that the rest of the structure and the operation principle of the present embodiment are the same as those of the first embodiment, and are not described herein again.
The invention also provides a vehicle rearview mirror which is the display panel with switchable transmission and mirror surfaces.
In this document, the directional terms upper, lower, left, right, front, rear, etc. are used to define the structures in the drawings and the positions of the structures relative to each other, and are used for clarity and convenience of technical solutions. It is to be understood that the use of the directional terms should not be taken to limit the scope of the claims. It is also to be understood that the terms "first" and "second," etc., are used herein for descriptive purposes only and are not to be construed as limiting in number or order.
Although the present invention has been described with reference to the preferred embodiments, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. A display panel capable of switching transmission and mirror surfaces comprises a first substrate (10), a second substrate (20) and a liquid crystal layer (30), wherein the second substrate (20) is arranged opposite to the first substrate (10), the liquid crystal layer (30) is arranged between the first substrate (10) and the second substrate (20), the second substrate (20) is defined by a plurality of scanning lines (1) and a plurality of data lines (2) which are mutually insulated and crossed on one side facing the liquid crystal layer (30) to form a plurality of pixel units (P), each pixel unit (P) is internally provided with a pixel electrode (23) and a thin film transistor (3), the pixel electrode (23) is connected with the corresponding scanning line (1) and data line (2) through the thin film transistor (3), the second substrate (20) is also provided with a first common electrode (21), the first substrate (10) is provided with a first polarizer (41) on one side far away from the liquid crystal layer (30), the second substrate (20) is provided with a second polaroid (42) at the side far away from the liquid crystal layer (30), the transmission axes of the first polaroid (41) and the second polaroid (42) are mutually vertical, the liquid crystal display is characterized in that a first quarter-wave plate (51) is arranged between the first substrate (10) and the first polaroid (41), the fast and slow axes of the first quarter-wave plate (51) and the transmission axis of the first polaroid (41) form 45 degrees, a second quarter-wave plate (52) is arranged between the second substrate (20) and the second polaroid (42), the fast and slow axes of the second quarter-wave plate (52) and the transmission axis of the second polaroid (42) form 45 degrees, each pixel unit (P) comprises a transmission region (T) and a reflection region (R), the pixel electrode (23) corresponds to the transmission region (T), and a reflection electrode (24) is arranged on the second substrate (20) corresponding to the reflection region (R) of each pixel unit (P), the reflecting electrode (24) penetrates through a row of the pixel units (P) along the direction of the scanning line (1) and corresponds to the plurality of reflecting regions (R), and one side of the first substrate (10) and one side of the second substrate (20) are provided with auxiliary electrodes (14) matched with the reflecting electrode (24); the reflection electrode (24) is positioned above the first common electrode (21), the first common electrode (21) arranged on the whole surface forms a storage capacitor with the pixel electrode (23) and the reflection electrode (24), a deflection electric field is formed with the pixel electrode (23), and the auxiliary electrode (14) and the reflection electrode (24) form a deflection electric field;
the reflecting electrode (24) and the pixel electrode (23) are positioned on the same layer and are insulated and isolated, the reflecting electrode (24) is also electrically connected with the electrode strips on two sides of the second substrate (20) in a non-display area through a through hole, and the auxiliary electrode (14) is positioned on the first substrate (10); or, the reflecting electrode (24) directly covers the first common electrode (21) and applies the same electric signal with the first common electrode (21), and the auxiliary electrode (14) and the pixel electrode (23) are positioned at the same layer and insulated and separated;
when a preset voltage is applied to the reflecting electrode (24) and the auxiliary electrode (14), the liquid crystal layer (30) corresponding to the reflecting region (R) is equivalent to a quarter-wave plate and has a phase delay of lambda/4, the reflecting region (R) is opened, the pixel electrode (23) does not apply the voltage at the moment, and the transmitting region (T) is closed; when no voltage is applied to the reflective electrode (24) and the auxiliary electrode (14), the liquid crystal layer (30) corresponding to the reflective region (R) has no phase retardation, the reflective region (R) is closed, and when a corresponding voltage is applied to the pixel electrode (23) and the first common electrode (21), the transmissive region (T) is opened.
2. The transmissive and mirror switchable display panel according to claim 1, characterized in that the transmissive region (T) and the reflective region (R) are spaced apart by a black matrix (11).
3. The transmissive and mirror switchable display panel according to claim 1, wherein the alignment direction of the first substrate (10) side is anti-parallel to the alignment direction of the second substrate (20) side, and the fast and slow axes of the first quarter-wave plate (51) and the fast and slow axes of the second quarter-wave plate (52) are parallel to each other.
4. The switchable display panel between transmission and mirror according to claim 1, characterized in that the area of the first substrate (10) corresponding to the reflective region (R) is in a transparent state.
5. The display panel switchable between transmission and mirror according to claim 1, wherein the first common electrode (21) and the pixel electrode (23) are located at different layers, the first common electrode (21) is a full-face structure, and the pixel electrode (23) is a comb-shaped electrode having slits.
6. A display panel capable of switching transmission and mirror surfaces comprises a first substrate (10), a second substrate (20) and a liquid crystal layer (30), wherein the second substrate (20) is arranged opposite to the first substrate (10), the liquid crystal layer (30) is arranged between the first substrate (10) and the second substrate (20), the second substrate (20) is defined by a plurality of scanning lines (1) and a plurality of data lines (2) which are mutually insulated and crossed on one side facing the liquid crystal layer (30) to form a plurality of pixel units (P), a pixel electrode (23) and a thin film transistor (3) are arranged in each pixel unit (P), the pixel electrode (23) is connected with the corresponding scanning line (1) and data line (2) through the thin film transistor (3), a first common electrode (21) is further arranged on the second substrate (20), a second common electrode (15) is further arranged on the first substrate (10), a first polaroid (41) is arranged on one side, far away from the liquid crystal layer (30), of the first substrate (10), the second substrate (20) is provided with a second polaroid (42) at the side far away from the liquid crystal layer (30), the transmission axes of the first polaroid (41) and the second polaroid (42) are mutually vertical, the liquid crystal display is characterized in that a first quarter-wave plate (51) is arranged between the first substrate (10) and the first polaroid (41), the fast and slow axes of the first quarter-wave plate (51) and the transmission axis of the first polaroid (41) form 45 degrees, a second quarter-wave plate (52) is arranged between the second substrate (20) and the second polaroid (42), the fast and slow axes of the second quarter-wave plate (52) and the transmission axis of the second polaroid (42) form 45 degrees, each pixel unit (P) comprises a transmission region (T) and a reflection region (R), the pixel electrode (23) corresponds to the transmission region (T), and a reflection electrode (24) is arranged on the second substrate (20) corresponding to the reflection region (R) of each pixel unit (P), the reflective electrode (24) penetrates a row of the pixel units (P) along the direction of the scanning line (1) and corresponds to the plurality of reflective regions (R); the reflection electrode (24) is positioned above the first common electrode (21), the reflection electrode (24) and the pixel electrode (23) are positioned on the same layer and isolated in an insulating way, and the reflection electrode (24) is also electrically connected with the electrode strips on two sides of the second substrate (20) in a non-display area through a via hole; the first common electrode (21) arranged on the whole surface forms a storage capacitor with the pixel electrode (23) and the reflection electrode (24), and the second common electrode (15) arranged on the whole surface forms a deflection electric field with the pixel electrode (23) and the reflection electrode (24);
when a preset voltage is applied to the reflective electrode (24) and the second common electrode (15), the liquid crystal layer (30) corresponding to the reflective region (R) has no phase delay, the reflective region (R) is closed, the pixel electrode (23) does not apply a voltage at the moment, and the transmissive region (T) is opened; when no voltage is applied to the reflective electrode (24), the liquid crystal layer (30) corresponding to the reflective region (R) is equivalent to a quarter-wave plate and has a phase retardation of lambda/4, the reflective region (R) is turned on, and when a corresponding voltage is applied to the pixel electrode (23) and the second common electrode (15), the transmissive region (T) is turned off.
7. The transmissive and mirror switchable display panel according to claim 6, characterized in that the transmissive region (T) and the reflective region (R) are separated by a black matrix (11) therebetween.
8. The switchable display panel between transmission and mirror according to claim 6, wherein the alignment direction of the first substrate (10) side and the alignment direction of the second substrate (20) side are perpendicular to each other, and the fast and slow axes of the first quarter-wave plate (51) and the fast and slow axes of the second quarter-wave plate (52) are perpendicular to each other.
9. The switchable display panel between transmission and mirror according to claim 6, characterized in that the area of the first substrate (10) corresponding to the reflective region (R) is in a transparent state.
10. A vehicle rear view mirror characterized by being the display panel as claimed in any one of claims 1 to 9, which is switchable between transmissive and specular surfaces.
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| CN112068340B (en) * | 2020-09-09 | 2023-04-25 | 昆山龙腾光电股份有限公司 | Display panel with switchable viewing angle, display device and driving method |
| 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 |
| CN112731664A (en) * | 2020-12-28 | 2021-04-30 | 北京经纬恒润科技股份有限公司 | Vehicle-mounted augmented reality head-up display system and display method |
| CN114460774B (en) * | 2021-12-10 | 2024-01-09 | 中国科学院重庆绿色智能技术研究院 | Reflective geometric phase liquid crystal spatial light modulation method, system and storage medium |
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| CN103278975B (en) * | 2013-05-27 | 2016-04-06 | 京东方科技集团股份有限公司 | Transflective liquid crystal panel, array base palte, color membrane substrates and method for making |
| CN103838043B (en) * | 2014-02-18 | 2016-08-31 | 京东方科技集团股份有限公司 | A kind of array base palte and preparation method thereof, display panels |
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