CN109656059B - Array substrate, display device and driving method thereof - Google Patents
Array substrate, display device and driving method thereof Download PDFInfo
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- CN109656059B CN109656059B CN201910140780.2A CN201910140780A CN109656059B CN 109656059 B CN109656059 B CN 109656059B CN 201910140780 A CN201910140780 A CN 201910140780A CN 109656059 B CN109656059 B CN 109656059B
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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
- G02F1/1343—Electrodes
- G02F1/134309—Electrodes characterised by their geometrical arrangement
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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
- G02F1/1336—Illuminating devices
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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
- G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
- G02F1/1362—Active matrix addressed cells
- G02F1/136286—Wiring, e.g. gate line, drain line
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- 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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
- H01L27/02—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having at least one potential-jump barrier or surface barrier; including integrated passive circuit elements with at least one potential-jump barrier or surface barrier
- H01L27/12—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having at least one potential-jump barrier or surface barrier; including integrated passive circuit elements with at least one potential-jump barrier or surface barrier the substrate being other than a semiconductor body, e.g. an insulating body
- H01L27/1214—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having at least one potential-jump barrier or surface barrier; including integrated passive circuit elements with at least one potential-jump barrier or surface barrier the substrate being other than a semiconductor body, e.g. an insulating body comprising a plurality of TFTs formed on a non-semiconducting substrate, e.g. driving circuits for AMLCDs
- H01L27/1218—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having at least one potential-jump barrier or surface barrier; including integrated passive circuit elements with at least one potential-jump barrier or surface barrier the substrate being other than a semiconductor body, e.g. an insulating body comprising a plurality of TFTs formed on a non-semiconducting substrate, e.g. driving circuits for AMLCDs with a particular composition or structure of the substrate
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
- H01L27/15—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components with at least one potential-jump barrier or surface barrier specially adapted for light emission
- H01L27/153—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components with at least one potential-jump barrier or surface barrier specially adapted for light emission in a repetitive configuration, e.g. LED bars
- H01L27/156—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components with at least one potential-jump barrier or surface barrier specially adapted for light emission in a repetitive configuration, e.g. LED bars two-dimensional arrays
Abstract
The application discloses an array substrate, a display device and a driving method thereof, which are used for improving the light emitting efficiency of a display product. An array substrate provided by the embodiment of the application, the display area of the array substrate includes: a reflective layer, and a plurality of sub-pixels and a plurality of electroluminescent light sources located over the reflective layer; the electroluminescent light source is located at the gap of the sub-pixels and comprises: the organic electroluminescent device comprises a first electrode, an inorganic luminescent functional layer connected with the first electrode, and a transparent electrode which is positioned on the inorganic luminescent functional layer and connected with the inorganic luminescent functional layer.
Description
Technical Field
The present disclosure relates to the field of display technologies, and in particular, to an array substrate, a display device and a driving method thereof.
Background
Liquid Crystal Display (LCD) devices have been widely used because of their advantages such as low power consumption and good Display effect. Since the liquid crystal itself does not emit light, the liquid crystal display device also requires a light source to display an image, and the liquid crystal display device may be classified into a transmissive liquid crystal display device, a reflective liquid crystal display device, and a transflective liquid crystal display device according to the type of the light source used. Among them, the transflective liquid crystal device has advantages of both the transmissive liquid crystal display device and the reflective liquid crystal display device. In the prior art, since both the reflective layer and the backlight are opaque, the method for realizing semi-transparency and semi-reflection is to divide the pixels of the display device into two parts, wherein one half of the pixels realize transmission and the other half realize reflection. Specifically, as shown in fig. 1 and 2, the display device includes a first substrate 1, a second substrate 2, an Indium Tin Oxide (ITO) electrode 3, and a reflective layer 4, in fig. 1, a transparent region is located at the edge of a pixel, and an opaque region is located in the middle of the pixel, in fig. 2, the opaque region is located at the edge of the pixel, and the transparent region is located in the middle of the pixel, and the transparent region cannot reflect in a reflective mode, and the opaque region cannot transmit in a transmissive mode, i.e., the entire pixel cannot transmit or reflect in either the transmissive mode or the reflective mode. In summary, the conventional transflective display device has low transmittance and reflectance.
Disclosure of Invention
The embodiment of the application provides an array substrate, a display device and a driving method thereof, which are used for improving the light emitting efficiency of a display product.
An array substrate provided by the embodiment of the application, the display area of the array substrate includes: a reflective layer, and a plurality of sub-pixels and a plurality of electroluminescent light sources located over the reflective layer; the electroluminescent light source is located at the gap of the sub-pixels and comprises: the organic electroluminescent device comprises a first electrode, an inorganic luminescent functional layer connected with the first electrode, and a transparent electrode which is positioned on the inorganic luminescent functional layer and connected with the inorganic luminescent functional layer.
According to the array substrate provided by the embodiment of the application, the sub-pixels and the electroluminescent light source are arranged on the reflecting layer, namely the reflecting layer is arranged in a whole layer. Be applied to the liquid crystal display product with the array substrate that this application embodiment provided, compare in prior art transflective display product, under reflection mode, the reflection stratum that whole layer set up among the array substrate is as the reflection zone, compares in prior art transflective display product, and reflection zone area increases to can improve reflection efficiency, and then improve the light-emitting efficiency under the reflection mode. Because the electroluminescent light source is arranged on the reflecting layer, when the electroluminescent light source works, most of light generated by the electroluminescent light source is directly emitted to the direction of human eyes, and a small part of light can be re-emitted to the direction of human eyes through reflection of the reflecting layer. In addition, the display product does not need to be additionally provided with a backlight source, so that the thickness of the display product can be reduced. The array substrate provided by the embodiment of the application is applied to the liquid crystal display product, and the array substrate comprises the electroluminescent light source, so that compared with a reflection type liquid crystal display product, the display mode of the display product is increased, the contrast of the display product can be improved, and the user experience is improved.
Optionally, the electroluminescent light source is strip-shaped; the electroluminescent light source is positioned in the area between two adjacent columns of sub-pixels or in the area between two adjacent rows of sub-pixels.
Optionally, the method further comprises: grid lines connected with the sub-pixels in each row in a one-to-one corresponding mode, and data lines connected with the sub-pixels in each column in a one-to-one corresponding mode; the electroluminescent light source is located in a region between the gate line and the unconnected row sub-pixels, or the electroluminescent light source is located in a region between the data line and the unconnected column sub-pixels.
The electroluminescent light Source is located in the area between the Gate line Gate and the row sub-pixel which is not connected, or the electroluminescent light Source is located in the area between the data line Source and the column sub-pixel which is not connected, so that the wiring difficulty can be simplified when the light Source is arranged on the array substrate, and the space utilization rate of the array substrate can be improved.
Optionally, the sub-pixel comprises: the pixel electrode and the common electrode are positioned on different film layers; when the pixel electrode is positioned on the upper layer, the first electrode and the common electrode are arranged on the same layer, and the transparent electrode and the pixel electrode are arranged on the same layer, or when the common electrode is positioned on the upper layer, the first electrode and the pixel electrode are arranged on the same layer, and the transparent electrode and the common electrode are arranged on the same layer.
Optionally, the sub-pixel comprises: each film layer of the thin film transistor, and pixel electrodes and common electrodes which are positioned on different film layers; the first electrode and the source electrode and the drain electrode of the thin film transistor are arranged on the same layer; the transparent electrode and the pixel electrode are arranged on the same layer, or the transparent electrode and the common electrode are arranged on the same layer.
Optionally, the sub-pixel comprises: each film layer of the thin film transistor, and pixel electrodes and common electrodes which are positioned on different film layers; the first electrode and the grid electrode of the thin film transistor are arranged on the same layer; the transparent electrode and the pixel electrode are arranged on the same layer, or the transparent electrode and the common electrode are arranged on the same layer.
Optionally, the inorganic luminescent functional layer comprises: an insulating layer, a semiconductor layer over the insulating layer; the first electrode is connected to the insulating layer, and the transparent electrode is connected to the semiconductor layer.
Optionally, the array substrate further includes: a substrate base plate and a buffer layer; the reflecting layer is positioned on the substrate base plate, and the buffer layer is positioned between the reflecting layer and the sub-pixels.
An embodiment of the present application provides a display device, the display device includes: the above-mentioned array substrate that this application embodiment provided, with the relative first base plate that sets up of array substrate, and be located array substrate with the liquid crystal layer between the first base plate.
The display device that this application embodiment provided is liquid crystal display device promptly, and this liquid crystal display device need not to set up the backlight, can realize display device's attenuate when improving display device luminous efficiency, promotes user experience.
A driving method of a display device according to an embodiment of the present application, the method comprising:
determining a display mode of the display device, wherein the display mode comprises a first mode and a second mode;
when the display mode of the display device is a first mode, controlling the electroluminescent light source to emit light;
and when the display mode of the display device is a second mode, controlling the electroluminescent light source not to emit light.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic diagram of a prior art LCD device;
FIG. 2 is a schematic view of another prior art LCD device;
fig. 3 is a schematic structural diagram of an array substrate according to an embodiment of the present disclosure;
fig. 4 is a schematic structural diagram of another array substrate according to an embodiment of the present disclosure;
fig. 5 is a schematic structural diagram of another array substrate according to an embodiment of the present disclosure;
FIG. 6 is a schematic diagram of a signal input port of an IC according to an embodiment of the present disclosure;
fig. 7 is a schematic structural diagram of another array substrate according to an embodiment of the present disclosure;
fig. 8 is a schematic structural diagram of another array substrate according to an embodiment of the present disclosure;
fig. 9 is a schematic structural diagram of another array substrate according to an embodiment of the present disclosure;
fig. 10 is a schematic structural diagram of another array substrate according to an embodiment of the present disclosure;
fig. 11 is a schematic structural diagram of another array substrate according to an embodiment of the present disclosure;
fig. 12 is a schematic structural diagram of another array substrate according to an embodiment of the present disclosure;
fig. 13 is a schematic structural diagram of another array substrate according to an embodiment of the present disclosure.
Detailed Description
An embodiment of the present application provides an array substrate, as shown in fig. 3, a display area of the array substrate includes: a reflective layer 4, and a plurality of sub-pixels 5 and a plurality of electroluminescent light sources 6 located above the reflective layer 4; the electroluminescent light source 6 is located at the gap 7 of the sub-pixel 5 and comprises: the organic electroluminescent device comprises a first electrode 8, an inorganic luminescent functional layer 9 connected with the first electrode 8, and a transparent electrode 10 which is positioned on the inorganic luminescent functional layer 9 and connected with the inorganic luminescent functional layer 9.
According to the array substrate provided by the embodiment of the application, the sub-pixels and the electroluminescent light source are arranged on the reflecting layer, namely the reflecting layer is arranged in a whole layer. Be applied to the liquid crystal display product with the array substrate that this application embodiment provided, compare in prior art transflective display product, under reflection mode, the reflection stratum that whole layer set up among the array substrate is as the reflection zone, compares in prior art transflective display product, and reflection zone area increases to can improve reflection efficiency, and then improve the light-emitting efficiency under the reflection mode. Because the electroluminescent light source is arranged on the reflecting layer, when the electroluminescent light source works, most of light generated by the electroluminescent light source is directly emitted to the direction of human eyes, and a small part of light can be re-emitted to the direction of human eyes through reflection of the reflecting layer. In addition, the display product does not need to be additionally provided with a backlight source, so that the thickness of the display product can be reduced. The array substrate provided by the embodiment of the application is applied to the liquid crystal display product, and the array substrate comprises the electroluminescent light source, so that compared with a reflection type liquid crystal display product, the display mode of the display product is increased, the contrast of the display product can be improved, and the user experience is improved.
Optionally, as shown in fig. 4 and 5, in the array substrate provided in the embodiment of the present application, the electroluminescent light source 6 is a strip; the electroluminescent light source 6 is located in the area between two adjacent columns of sub-pixels, as shown in figure 4, or in the area between two adjacent rows of sub-pixels, as shown in figure 5.
Optionally, the array substrate shown in fig. 4 and 5 provided in this embodiment of the present application further includes: the grid lines Gate are correspondingly connected with the sub-pixels 5 in each row one by one, and the data lines Source are correspondingly connected with the sub-pixels in each column one by one; the electroluminescent light Source 6 is located in a region between the Gate line Gate and the unconnected row subpixel 5 as shown in fig. 4, or the electroluminescent light Source 6 is located in a region between the data line Source and the unconnected column subpixel as shown in fig. 5.
The electroluminescent light Source is located in the area between the Gate line Gate and the row sub-pixel which is not connected, or the electroluminescent light Source is located in the area between the data line Source and the column sub-pixel which is not connected, so that the wiring difficulty can be simplified when the light Source is arranged on the array substrate, and the space utilization rate of the array substrate can be improved.
Optionally, the electroluminescent light source is connected to a driving Integrated Circuit (IC) through an electrode lead. When the electroluminescent light Source is located in the area between the data line Source and the unconnected column sub-pixels, optionally the electroluminescent light Source is connected to the same IC as the data line. As shown in fig. 6, the IC has a plurality of signal input ports 24 (pads) connected to the leads, the signal input ports 24 providing signals to the electroluminescent light Source in a region 25 above the IC, and the signal input ports 24 providing signals to the Source in a region 26 below the IC. The electroluminescent light source is located in a region between the Gate line Gate and the row sub-pixels which are not connected, and if the Gate line is connected to a Gate drive circuit (GOA), an IC for driving the electroluminescent light source may be separately provided, and if the Gate line is connected to the IC, the electroluminescent light source is connected to the same IC as the Gate line.
Optionally, the sub-pixel comprises: the pixel electrode and the common electrode are positioned on different film layers; when the pixel electrode is positioned on the upper layer, the first electrode and the common electrode are arranged on the same layer, and the transparent electrode and the pixel electrode are arranged on the same layer, or when the common electrode is positioned on the upper layer, the first electrode and the pixel electrode are arranged on the same layer, and the transparent electrode and the common electrode are arranged on the same layer.
According to the array substrate provided by the embodiment of the application, the first electrode and the common electrode are arranged on the same layer, and the transparent electrode and the pixel electrode are arranged on the same layer, or the first electrode and the pixel electrode are arranged on the same layer, and the transparent electrode and the common electrode are arranged on the same layer, so that the wiring difficulty can be simplified when the array substrate is provided with a light source, and the process difficulty of array substrate preparation can be simplified.
When the pixel electrode is located on the upper layer, as shown in fig. 3, the sub-pixel includes: a pixel electrode 21, a common electrode 22, a gate electrode 15 of a thin film transistor, a gate insulating layer 16, an active layer 17, a drain electrode 18, a source electrode 19, and a protective layer 20; the common electrode 22 and the first electrode 8 of the electroluminescent light source 6 are located on the gate insulating layer 16, and the pixel electrode 21 and the transparent electrode 10 of the electroluminescent light source 6 are located on the protective layer 20. In a specific implementation, the first electrode 8 and the common electrode 22 may be disposed in the same layer, and the transparent electrode 10 and the pixel electrode 21 may be disposed in the same layer.
When the common electrode is located at an upper layer, as shown in fig. 7, the sub-pixel includes: a pixel electrode 21, a common electrode 22, a gate electrode 15 of a thin film transistor, a gate insulating layer 16, an active layer 17, a drain electrode 18, a source electrode 19, and a protective layer 20, wherein an insulating film layer 23 is arranged between the pixel electrode 21 and the common electrode 22; the pixel electrode 21 and the first electrode 8 of the electroluminescent light source 6 are located on the protective layer 20, and the common electrode 22 and the transparent electrode 10 of the electroluminescent light source 6 are located on the insulating film layer 23. In a specific implementation, the first electrode 8 and the pixel electrode 21 may be disposed in the same layer, and the transparent electrode 10 and the common electrode 22 may be disposed in the same layer.
It should be noted that the pixel electrode and the common electrode are generally made of a transparent material, such as ITO, and when the first electrode and the common electrode are disposed in the same layer, and the transparent electrode and the pixel electrode are disposed in the same layer, or the first electrode and the pixel electrode are disposed in the same layer, and the transparent electrode and the common electrode are disposed in the same layer, that is, the first electrode of the electroluminescent light source is also a transparent electrode.
Optionally, in the array substrate provided in this embodiment of the present application, the electroluminescent light source is a transparent electroluminescent light source. That is, the first electrode is a transparent electrode, and the inorganic light-emitting functional layer is a transparent inorganic light-emitting functional layer.
Thus, as the sub-pixels and the electroluminescent light source are arranged on the reflecting layer, namely the whole reflecting layer is arranged below the electroluminescent light source, in the reflecting mode, the electroluminescent light source is in a transparent state when not in work, the incident light and the reflected light cannot be blocked, and the reflecting layer can reflect all light incident into the display product, thereby realizing the total reflecting mode.
It should be noted that, even if the electroluminescent light source is not a transparent light source, in the reflective mode, even if the light entering the display product is reflected to the electroluminescent light source region by the reflective layer, because the reflective layer arranged in the entire layer in the array substrate is used as the reflective region, the light can still be reflected to the reflective layer and then emitted, compared with the transflective display product in the prior art, the reflective region still increases in area, thereby the reflective efficiency can be improved, and further the light-emitting efficiency in the reflective mode is improved.
Optionally, the sub-pixel comprises: each film layer of the thin film transistor, and pixel electrodes and common electrodes which are positioned on different film layers; the first electrode and the source electrode and the drain electrode of the thin film transistor are arranged on the same layer; the transparent electrode and the pixel electrode are arranged on the same layer, or the transparent electrode and the common electrode are arranged on the same layer.
According to the array substrate provided by the embodiment of the application, the first electrode and the source electrode and the drain electrode of the thin film transistor are arranged on the same layer, and the transparent electrode and the pixel electrode are arranged on the same layer, or the transparent electrode and the common electrode are arranged on the same layer, so that the wiring difficulty can be simplified when the array substrate is provided with a light source, and the process difficulty of array substrate preparation can be simplified.
When the pixel electrode is located on the upper layer, for the array substrate shown in fig. 3 provided in this embodiment of the present application, the first electrode 8, the source electrode 19 and the drain electrode 18 may also be disposed on the same layer, and the transparent electrode 10 and the pixel electrode 21 are disposed on the same layer.
When the common electrode is located at an upper layer, as shown in fig. 8, the sub-pixel includes: a gate electrode 15, a gate insulating layer 16, an active layer 17, a drain electrode 18, a source electrode 19, and a protective layer 20 of the thin film transistor, a pixel electrode 21, an insulating film layer 23, a common electrode 22; the first electrode 8 of the electroluminescent light source 6 is located on the gate insulating layer 16, and the pixel electrode 21 and the transparent electrode 10 of the electroluminescent light source 6 are located on the protective layer 20. In a specific implementation, the first electrode 8 may be disposed on the same layer as the source electrode 19 and the drain electrode 18, and the transparent electrode 10 may be disposed on the same layer as the pixel electrode 21. Of course, as shown in fig. 9, the first electrode 8 may be provided in the same layer as the source electrode 19 and the drain electrode 18, and the transparent electrode 10 may be provided in the same layer as the common electrode 22.
Of course, the first electrode and the transparent electrode in fig. 3, 7 and 8 may be arranged by adopting an additional process flow without considering the increase of the process difficulty.
Optionally, the sub-pixel comprises: each film layer of the thin film transistor, and pixel electrodes and common electrodes which are positioned on different film layers; the first electrode and the grid electrode of the thin film transistor are arranged on the same layer; the transparent electrode and the pixel electrode are arranged on the same layer, or the transparent electrode and the common electrode are arranged on the same layer.
When the pixel electrode is located on the upper layer, as shown in fig. 10, a buffer layer 14 is further included between the reflective layer 4 and the sub-pixel, and the sub-pixel includes: a pixel electrode 21, a common electrode 22, a gate electrode 15 of a thin film transistor, a gate insulating layer 16, an active layer 17, a drain electrode 18, a source electrode 19, and a protective layer 20; the first electrode 8 is located on the buffer layer 14, and the common electrode 22 and the transparent electrode 10 of the electroluminescent light source 6 are located on the gate insulating layer 16. In specific implementation, the first electrode 8 and the gate 15 of the thin film transistor may be disposed in the same layer; the transparent electrode and the pixel electrode are arranged on the same layer. Of course, as shown in fig. 11, the first electrode 8 may be located on the buffer layer 14, the transparent electrode 10 and the pixel electrode 21 may be located on the protective layer 20, the first electrode 8 and the gate electrode 15 of the thin film transistor may be disposed in the same layer, and the transparent electrode and the pixel electrode may be disposed in the same layer.
When the common electrode is located on the upper layer, as shown in fig. 12, a buffer layer 14 is further included between the reflective layer 4 and the sub-pixel, and the sub-pixel includes: a pixel electrode 21, a common electrode 22, a gate electrode 15 of a thin film transistor, a gate insulating layer 16, an active layer 17, a drain electrode 18, a source electrode 19, and a protective layer 20; the first electrode 8 is located on the buffer layer 14, and the common electrode 22 and the transparent electrode 10 of the electroluminescent light source 6 are located on the gate insulating layer 16. In specific implementation, the first electrode 8 and the gate 15 of the thin film transistor may be disposed in the same layer; the transparent electrode 10 and the pixel electrode 21 are disposed in the same layer. Of course, as shown in fig. 13, the first electrode 8 may be disposed on the same layer as the gate electrode 15 of the thin film transistor, and the transparent electrode 10 may be disposed on the same layer as the common electrode 22.
Of course, the first electrode and the transparent electrode in fig. 10 to 13 may be disposed by adopting an additional process flow without considering the increase of the process difficulty.
It should be noted that the array substrate shown in fig. 3 and 7-13 provided in the embodiments of the present application may be a cross-sectional view along AA 'in fig. 4, or a cross-sectional view along BB' in fig. 5.
Optionally, in the array substrate shown in fig. 3 and 7 to 13 provided in this embodiment of the present application, the inorganic luminescent functional layer 9 includes: an insulating layer 11, a semiconductor layer 12 located over the insulating layer 11; the first electrode 8 is connected to the insulating layer 11, and the transparent electrode 10 is connected to the semiconductor layer 12.
Optionally, the material of the conductor layer is silicon oxide (SiO)2) The material of the insulating layer is molybdenum selenide (MoSe)2)。
Optionally, the inorganic light emitting functional layer is in contact with the first electrode layer without overlap. In the array substrate shown in fig. 3 and 7-13 provided in the embodiment of the present application, the inorganic light emitting layer 9 and the first electrode layer 8 are located on the same film layer, so that the wiring difficulty and the array substrate preparation process difficulty can be simplified.
Optionally, the array substrate shown in fig. 3 and 7-13 provided in this embodiment of the present application, further includes: a base substrate 13, and a buffer layer 14; the reflective layer 4 is located on the substrate base plate 13, and the buffer layer 14 is located between the reflective layer 4 and the sub-pixels.
Optionally, the electroluminescent light sources correspond to the sub-pixels one to one.
This corresponds to each sub-pixel having a light source, and uniform light emission can be achieved.
An embodiment of the present application provides a display device, the display device includes: the above-mentioned array substrate that this application embodiment provided, with the relative first base plate that sets up of array substrate, and be located array substrate with the liquid crystal layer between the first base plate.
The display device that this application embodiment provided is liquid crystal display device promptly, and this liquid crystal display device need not to set up the backlight, can realize display device's attenuate when improving display device luminous efficiency, promotes user experience.
A driving method of a display device according to an embodiment of the present application, the method comprising:
determining a display mode of the display device, wherein the display mode comprises a first mode and a second mode;
when the display mode of the display device is a first mode, controlling the electroluminescent light source to emit light;
and when the display mode of the display device is a second mode, controlling the electroluminescent light source not to emit light.
The electroluminescent light source is used as a display light source in the first mode, most of light generated by the electroluminescent light source is directly emitted to the direction of human eyes, and a small part of light is reflected by the reflecting layer and then re-emitted to the direction of human eyes, so that the utilization rate of the light source in the working mode of the light source can be improved; in the second mode, the electroluminescent light source is not operated, and the whole layer of the reflective layer reflects light incident into the display device. If the electroluminescent light source is a transparent electroluminescent light source, the electroluminescent light source is in a transparent state when not in operation, and does not block incident light and reflected light, and the reflective layer can reflect all light incident into the display device, thereby realizing a total reflection mode.
Optionally, the controlling the electroluminescent light source to emit light specifically includes: providing an alternating current signal to the electroluminescent light source. Thus, in the electroluminescent light source, the positive current and the negative current are switched continuously, positive charges and negative charges are continuously generated and accumulated in the inorganic luminescent functional layer, and finally light rays are generated in the inorganic luminescent functional layer. Specifically, if the first electrode and the common electrode are disposed on the same layer, a common voltage signal may be applied to the first electrode, and an ac voltage signal may be applied to the transparent electrode.
In summary, according to the array substrate, the display device and the driving method thereof provided by the embodiment of the present application, the sub-pixels and the electroluminescent light source are disposed on the reflective layer, that is, the reflective layer is disposed in a whole layer. Be applied to the liquid crystal display product with the array substrate that this application embodiment provided, compare in prior art transflective display product, under reflection mode, the reflection stratum that whole layer set up among the array substrate is as the reflection zone, compares in prior art transflective display product, and reflection zone area increases to can improve reflection efficiency, and then improve the light-emitting efficiency under the reflection mode. Because the electroluminescent light source is arranged on the reflecting layer, when the electroluminescent light source works, most of light generated by the electroluminescent light source is directly emitted to the direction of human eyes, and a small part of light can be re-emitted to the direction of human eyes through reflection of the reflecting layer. In addition, the display product does not need to be additionally provided with a backlight source, so that the thickness of the display product can be reduced. The array substrate provided by the embodiment of the application is applied to the liquid crystal display product, and the array substrate comprises the electroluminescent light source, so that compared with a reflection type liquid crystal display product, the display mode of the display product is increased, the contrast of the display product can be improved, and the user experience is improved.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.
Claims (10)
1. An array substrate, wherein a display area of the array substrate comprises: a reflective layer, and a plurality of sub-pixels and a plurality of electroluminescent light sources located over the reflective layer; the electroluminescent light source is located at the gap of the sub-pixels and comprises: the first electrode, the inorganic luminescent functional layer connected with the first electrode, the transparent electrode located on the inorganic luminescent functional layer and connected with the inorganic luminescent functional layer; the reflecting layer is arranged in a whole layer.
2. The array substrate of claim 1, wherein the electroluminescent light source is a stripe; the electroluminescent light source is positioned in the area between two adjacent columns of sub-pixels or in the area between two adjacent rows of sub-pixels.
3. The array substrate of claim 2, further comprising: grid lines connected with the sub-pixels in each row in a one-to-one corresponding mode, and data lines connected with the sub-pixels in each column in a one-to-one corresponding mode; the electroluminescent light source is located in a region between the gate line and the unconnected row sub-pixels, or the electroluminescent light source is located in a region between the data line and the unconnected column sub-pixels.
4. The array substrate of claim 1, wherein the sub-pixels comprise: the pixel electrode and the common electrode are positioned on different film layers; when the pixel electrode is positioned on the upper layer, the first electrode and the common electrode are arranged on the same layer, and the transparent electrode and the pixel electrode are arranged on the same layer, or when the common electrode is positioned on the upper layer, the first electrode and the pixel electrode are arranged on the same layer, and the transparent electrode and the common electrode are arranged on the same layer.
5. The array substrate of claim 1, wherein the sub-pixels comprise: each film layer of the thin film transistor, and pixel electrodes and common electrodes which are positioned on different film layers; the first electrode and the source electrode and the drain electrode of the thin film transistor are arranged on the same layer; the transparent electrode and the pixel electrode are arranged on the same layer, or the transparent electrode and the common electrode are arranged on the same layer.
6. The array substrate of claim 1, wherein the sub-pixels comprise: each film layer of the thin film transistor, and pixel electrodes and common electrodes which are positioned on different film layers; the first electrode and the grid electrode of the thin film transistor are arranged on the same layer; the transparent electrode and the pixel electrode are arranged on the same layer, or the transparent electrode and the common electrode are arranged on the same layer.
7. The array substrate of claim 1, wherein the inorganic luminescent functional layer comprises: an insulating layer, a semiconductor layer over the insulating layer; the first electrode is connected to the insulating layer, and the transparent electrode is connected to the semiconductor layer.
8. The array substrate of claim 1, further comprising: a substrate base plate and a buffer layer; the reflecting layer is positioned on the substrate base plate, and the buffer layer is positioned between the reflecting layer and the sub-pixels.
9. A display device, characterized in that the display device comprises: an array substrate according to any one of claims 1 to 8, a first substrate disposed opposite to the array substrate, and a liquid crystal layer between the array substrate and the first substrate.
10. A method for driving a display device according to claim 9, wherein the method comprises:
determining a display mode of the display device, wherein the display mode comprises a first mode and a second mode;
when the display mode of the display device is a first mode, controlling the electroluminescent light source to emit light;
and when the display mode of the display device is a second mode, controlling the electroluminescent light source not to emit light.
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