CN113534520B - Double-sided display panel, display device and driving method - Google Patents
Double-sided display panel, display device and driving method Download PDFInfo
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- CN113534520B CN113534520B CN202110874118.7A CN202110874118A CN113534520B CN 113534520 B CN113534520 B CN 113534520B CN 202110874118 A CN202110874118 A CN 202110874118A CN 113534520 B CN113534520 B CN 113534520B
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- 239000004973 liquid crystal related substance Substances 0.000 claims abstract description 19
- 239000010409 thin film Substances 0.000 claims description 74
- 239000010408 film Substances 0.000 claims description 30
- 239000011521 glass Substances 0.000 claims description 18
- 239000011159 matrix material Substances 0.000 claims description 16
- 229910052751 metal Inorganic materials 0.000 description 15
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- 239000004332 silver Substances 0.000 description 1
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Classifications
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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
- G02F1/133342—Constructional arrangements; Manufacturing methods for double-sided displays
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/13306—Circuit arrangements or driving methods for the control of single liquid crystal cells
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133553—Reflecting elements
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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
-
- 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
- G02F1/134345—Subdivided pixels, e.g. for grey scale or redundancy
-
- 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
- G02F1/1368—Active matrix addressed cells in which the switching element is a three-electrode device
Abstract
The application discloses a double-sided display panel, a display device and a driving method, wherein the double-sided display panel comprises an array substrate, a color film substrate and a liquid crystal layer, the liquid crystal layer is arranged between the array substrate and the color film substrate, the array substrate comprises a plurality of pixel units, each pixel unit comprises a plurality of sub-pixels, each sub-pixel comprises a transmission area and a reflection area, and the transmission areas of the sub-pixels and the reflection areas of the sub-pixels are respectively connected and controlled through independent active switches; and a reflecting layer is arranged on the color film substrate corresponding to the reflecting area of each sub-pixel. The display device has the advantage that different pictures can be displayed on the front side and the back side of the double-sided display panel at the same time.
Description
Technical Field
The present disclosure relates to the field of display technologies, and in particular, to a dual-sided display panel, a display device, and a driving method.
Background
Currently, most of display panels on the market are mainly displayed on one side, and in many occasions, for example, in advertisement broadcasting facilities in public places such as digital signage, electronic communication equipment, cashing facilities, window inquiring facilities, exhibition halls, and the like, two people often need to watch displayed pictures from both sides of the display panel.
Although the conventional TFT-LCD panel has been capable of realizing double-sided display through a structural innovation design, no matter transmissive display, reflective display, semi-transmissive and semi-reflective display, etc., the double-sided display panel screen has not been realized to simultaneously display different front and back images by using the liquid crystal display technology.
Disclosure of Invention
The present application provides a dual-sided display panel, a display device and a driving method, and aims to solve the problem that a liquid crystal dual-sided display panel in the prior art cannot display different front and back images at the same time.
The application discloses a double-sided display panel, which comprises an array substrate, a color film substrate and a liquid crystal layer, wherein the liquid crystal layer is arranged between the array substrate and the color film substrate, the array substrate comprises a plurality of pixel units, each pixel unit comprises a plurality of sub-pixels, each sub-pixel comprises a transmission area and a reflection area, and the transmission area of the sub-pixel and the reflection area of the sub-pixel are respectively connected and controlled through independent active switches; and a reflecting layer is arranged on the color film substrate corresponding to the reflecting area of each sub-pixel.
Optionally, the array substrate includes a lower glass substrate layer, where the lower glass substrate layer is provided with a plurality of data lines arranged in parallel and a plurality of scanning lines perpendicular to the data lines, and the plurality of scanning lines are parallel to each other; the active switch is a thin film transistor, the thin film transistor comprises a first thin film transistor and a second thin film transistor, the drain electrode of the first thin film transistor is connected with the transmission area of the sub-pixel, the drain electrode of the second thin film transistor is connected with the reflection area of the sub-pixel, the source electrodes of the thin film transistors are respectively connected with different data lines, and the grid electrodes of the two thin film transistors are connected with the same scanning line.
Optionally, pixel electrodes are disposed on the array substrate corresponding to the transmission area and the reflection area of the sub-pixel, and the pixel electrodes of the transmission area of the sub-pixel are separated from the pixel electrodes of the reflection area of the sub-pixel.
Optionally, the array substrate includes a lower glass substrate layer, where the lower glass substrate layer is provided with a plurality of data lines arranged in parallel and a plurality of scanning lines perpendicular to the data lines, and the plurality of scanning lines are parallel to each other; the active switch is a thin film transistor, the thin film transistor comprises a first thin film transistor and a second thin film transistor, the drain electrode of the first thin film transistor is connected with the transmission area of the sub-pixel, the drain electrode of the second thin film transistor is connected with the reflection area of the sub-pixel, two data lines are arranged between two adjacent sub-pixels along the direction of the scanning lines, and two scanning lines are arranged between two adjacent sub-pixels along the direction of the data lines; the source electrode of the first thin film transistor and the source electrode of the second thin film transistor are respectively connected with different data lines, and the grid electrode of the first thin film transistor and the grid electrode of the second thin film transistor are respectively connected with different scanning lines.
Optionally, the color film substrate comprises an upper transparent electrode layer, a color resistance layer and an upper glass substrate layer; the color resistance layer comprises a black matrix and color resistances, the color resistances are arranged in the color resistance layer and correspond to the sub-pixels, and the black matrix is arranged between the adjacent color resistances; the color resistance corresponding to each sub-pixel can be divided into a first color resistance block and a second color resistance block, the first color resistance block corresponding to the transmission area of the sub-pixel and the second color resistance block corresponding to the reflection area of the sub-pixel are also separated by a black matrix, and a reflection layer is arranged between the second color resistance block and the upper glass substrate layer.
Optionally, the black matrix includes a plurality of first light shielding layers, and the first thin film transistor and the second thin film transistor are disposed corresponding to the first light shielding layers; the black matrix further includes a second light shielding layer corresponding to a portion between the transmissive region and the reflective region within the sub-pixel, a width of the second light shielding layer being smaller than a width of the first light shielding layer.
Optionally, the thickness of the first color block is greater than the thickness of the second color block, the total thickness of the reflective layer and the second color block is the same as the thickness of the first color block, and the color of the first color block is the same as the color of the second color block.
The application also discloses a display device, which comprises the double-sided display panel and the backlight module, wherein the backlight module comprises a light source component, and the light source component is arranged on one side of the array substrate far away from the color film substrate; the light source component comprises a light plate and a light source, the light plate is arranged on one side of the array substrate, which is away from the color film substrate, the light source is arranged on one side of the light plate, which is towards the array substrate, and the light plate is transparent in the area corresponding to the reflection area.
Optionally, the light source is a mini-LED, and the mini-LED is distributed on the light panel in an array.
The application also discloses a driving method which can be used for driving any of the double-sided display panels, and the driving method comprises the following steps:
outputting a first data signal to a pixel electrode arranged in a transmission area corresponding to the sub-pixel;
outputting a second data signal to a pixel electrode arranged in a reflection area corresponding to the sub-pixel;
the first data signal controls the pixel electrode of the transmission area to charge so as to display a picture corresponding to the transmission area, and the second data signal controls the pixel electrode of the reflection area to charge so as to display a picture corresponding to the reflection area.
According to the double-sided display panel, one sub-pixel is divided into two areas of the transmission area and the reflection area, the transmission area and the reflection area are controlled through different active switches respectively, and the reflection layer is arranged on the color film substrate at the part corresponding to the reflection area, so that light passes through the transmission area to form a first display picture, the light reflects a light source back through the reflection area to form a second display picture, and the first display picture and the second display picture can be identical or different; when the transmission area and the reflection area are controlled to respectively transmit different data signals, a first display picture and a second display picture with different pictures can be displayed at the same time, so that the two-sided display panel utilizing the liquid crystal display principle can display different positive and negative pictures at the same time.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the principles of the application. It is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained from these drawings without inventive faculty for a person skilled in the art. In the drawings:
fig. 1 is a schematic structural view of a dual display panel according to a first embodiment of the present application;
fig. 2 is an equivalent circuit schematic diagram of a dual display panel according to a first embodiment of the present application;
fig. 3 is a schematic structural view of a thin film transistor according to a first embodiment of the present application;
fig. 4 is a schematic structural view of a dual display panel according to a second embodiment of the present application;
fig. 5 is a schematic structural view of a dual display panel according to a third embodiment of the present application;
fig. 6 is an equivalent circuit schematic diagram of a dual display panel in a fourth embodiment of the present application;
fig. 7 is an equivalent circuit schematic diagram of a dual display panel in a fifth embodiment of the present application;
fig. 8 is a schematic structural view of a display device in a sixth embodiment of the present application;
fig. 9 is a schematic structural view of a display device in a seventh embodiment of the present application;
fig. 10 is a schematic view of a display device according to a seventh embodiment of the present application;
fig. 11 is a schematic diagram of a driving method in an eighth embodiment of the present application.
Wherein, 100, two-sided display panel; 200. an array substrate; 210. a lower glass substrate layer; 220. a thin film transistor; 221. a first thin film transistor; 222. a second thin film transistor; 223. a gate metal layer; 224. a first insulating layer; 225. a semiconductor layer; 226. a source metal layer; 227. a drain metal layer; 228. a second insulating layer; 230. a pixel electrode; 300. a color film substrate; 310. a reflection region; 320. a transmissive region; 330. a first color block; 340. a second color block; 350. a reflective layer; 360. a light shielding layer; 361. a first light shielding layer; 362. a second light shielding layer; 363. a third light shielding layer; 370. an upper transparent electrode layer; 380. a glass substrate layer is arranged on the upper surface of the glass substrate layer; 400. a liquid crystal layer; 500. a display device; 510. a backlight module; 520. a light source assembly; 521. a light source; 522. a transparent region; 523. a lamp panel; 600. a scanning line; 700. a sub-pixel; 800. and a data line.
Detailed Description
It should be understood that the terminology, specific structural and functional details disclosed herein are merely representative for purposes of describing particular embodiments, but that the application may be embodied in many alternate forms and should not be construed as limited to only the embodiments set forth herein.
In the description of the present application, the terms "first", "second" are used for descriptive purposes only and are not to be construed as indicating relative importance or implicitly indicating the number of technical features indicated. Thus, unless otherwise indicated, features defining "first", "second" may include one or more such features either explicitly or implicitly; the meaning of "plurality" is two or more. The terms "comprises," "comprising," and any variations thereof, are intended to cover a non-exclusive inclusion, such that one or more other features, integers, steps, operations, elements, components, and/or groups thereof may be present or added.
In addition, terms of the azimuth or positional relationship indicated by "center", "lateral", "upper", "lower", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., are described based on the azimuth or relative positional relationship shown in the drawings, are merely for convenience of description of the present application, and do not indicate that the apparatus or element referred to must have a specific azimuth, be configured and operated in a specific azimuth, and thus should not be construed as limiting the present application.
Furthermore, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; either directly or indirectly through intermediaries, or in communication with each other. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.
The present application is described in detail below with reference to the attached drawings and alternative embodiments.
Fig. 1 is a schematic structural view of a dual display panel according to a first embodiment of the present application;
fig. 2 is an equivalent circuit schematic of a dual display panel according to a first embodiment of the present application; as shown in fig. 1 and fig. 2, as a first embodiment of the present application, a dual-sided display panel 100 is disclosed, which includes an array substrate 200, a color film substrate 300, and a liquid crystal layer 400, wherein the liquid crystal layer 400 is disposed between the array substrate 200 and the color film substrate 300, the array substrate 200 includes a plurality of pixel units, each pixel unit includes a plurality of sub-pixels 700, each sub-pixel 700 includes a transmissive region 320 and a reflective region 310, and the transmissive region 320 of each sub-pixel 700 and the reflective region 310 of the sub-pixel 700 are respectively connected and controlled by independent active switches; the reflective layer 350 is disposed on the color film substrate 300 corresponding to the reflective region 310 of each sub-pixel 700, the reflective layer 350 is configured to reflect light, the light is reflected back when passing through the reflective layer 350 of the reflective region 310, and reaches the incident side of the light, and the reflective layer 350 is formed of any one material or combination of materials of aluminum, silver, and aluminum-silver alloy.
The sub-pixel 700 is divided into the reflective area 310 and the transmissive area 320, the transmissive area 320 is capable of transmitting light, the light passing through the transmissive area 320 can make the light transmitting surface of the dual-sided display panel 100 form a first display screen, the same light is in the reflective area 310, and due to the reflective layer 350, the light can be reflected back, so that the light reflecting surface of the dual-sided display panel 100 forms a second display screen, the two display screens are respectively displayed on two sides of the dual-sided display panel 100, and for better controlling the display of the screens, the transmissive area 320 of the corresponding sub-pixel 700 and the reflective area 310 of the sub-pixel 700 are respectively controlled by independent active switches.
In each sub-pixel 700, the area of the transmissive region 320 and the area of the reflective region 310 of the sub-pixel 700 are equal; of course, the area of the transmissive area 320 may be larger than the area of the reflective area 310, and the ratio of the transmissive area 320 to the reflective area 310 may be set to 7:3 or 6:4, which may be manufactured according to the actual use situation in the market and sold in the factory, or the area of the reflective area 310 may be larger than the area of the transmissive area.
Further, the array substrate 200 further includes a lower glass substrate layer 210, a plurality of data lines 800 disposed in parallel and a plurality of scan lines 600 perpendicular to the data lines 800 are disposed on the lower glass substrate layer 210, and the plurality of scan lines 600 are parallel to each other; the active switch is a thin film transistor 220, the drain electrode of the thin film transistor 220 is connected with the sub-pixel 700, the source electrode of the thin film transistor 220 is connected with the data line 800, and the gate electrode of the thin film transistor 220 is connected with the scan line 600; the transmissive area 320 and the reflective area 310 are disposed side by side corresponding to different positions of the liquid crystal layer 400, the thin film transistor 220 includes a first thin film transistor 221 and a second thin film transistor 222, the drain electrode of the first thin film transistor 221 is connected to the transmissive area 320 of the sub-pixel 700, the drain electrode of the second thin film transistor 222 is connected to the reflective area 310 of the sub-pixel 700, the sources of the two thin film transistors 220 are respectively connected to different data lines 800, the gates of the two thin film transistors 220 are connected to the same scan line 600, i.e. the 2D1G driving architecture, and in one row of sub-pixels, adjacent transmissive areas 320 and reflective areas 310 are connected to different data lines 800 and the same scan line 600. Taking the first row of scanning lines, the first row of data lines and the second row of data lines as an example, the source electrode of the first thin film transistor is connected with the first row of data lines, the drain electrode of the first thin film transistor is connected with the transmission area, the grid electrode of the second thin film transistor is connected with the first row of scanning lines, the source electrode of the second thin film transistor is connected with the second row of data lines, the drain electrode of the second thin film transistor is connected with the reflection area, the grid electrode of the second thin film transistor is connected with the first row of scanning lines, and the two data lines 800 can transmit different data signals, so that pictures displayed on two sides can be different, of course, the two data lines 800 can transmit the same data signals, the same pictures are displayed on two sides, and the picture display on two sides can be determined by more data signals.
As a further refinement of the first embodiment, fig. 3 is a schematic structural view of a thin film transistor according to the first embodiment of the present application; as shown in fig. 3, the thin film transistor 220 includes a gate metal layer 223, a first insulating layer 224, a semiconductor layer 225, a source metal layer 226, a drain metal layer 227, and a second insulating layer 228; the gate metal layer 223 is formed on the lower glass substrate layer 210; the first insulating layer 224 covers the gate metal layer 223; the semiconductor layer 225 is disposed on the first insulating layer 224; the source metal layer 226 is disposed on the semiconductor layer 225; the drain metal layer 227 is disposed on the semiconductor layer 225 and opposite to the source metal layer 226, and the drain metal layer 227 is connected to the data line 800 shown in fig. 2; the second insulating layer 228 is disposed on the source metal layer and the drain metal layer, and a via hole is disposed on the second insulating layer corresponding to the drain electrode; the pixel electrode of the sub-pixel is connected to the drain metal layer 226 through the via hole, the pixel electrode 230 is disposed on the array substrate 200 corresponding to the transmissive region 320 and the reflective region 310 of the sub-pixel 700, and the pixel electrode 230 of the transmissive region 320 of the sub-pixel 700 and the pixel electrode 230 of the reflective region 310 of the sub-pixel 700 are separated, i.e. not communicated with each other.
Fig. 4 is a schematic structural view of a dual display panel according to a second embodiment of the present application; as a second embodiment of the present application, this embodiment is based on further improvement and refinement of the first embodiment, as shown in fig. 4, when implementing double-sided display of the same picture or different pictures, the display picture may be made to display different colors, where the color film substrate includes an upper transparent electrode layer 370, a color resist layer, and an upper glass substrate layer 380; the color resistance layer comprises a black matrix 360 and color resistances, the black matrix comprises a shading layer 360, the color resistances are arranged in the color resistance layer at the positions corresponding to the sub-pixels, and the black matrix is arranged between the adjacent color resistances; the color resistance corresponding to each sub-pixel can be divided into a first color block 330 and a second color block 340, the first color block 330 corresponding to the transmission area of the sub-pixel 700 shown in fig. 2 and the second color block 340 corresponding to the reflection area of the sub-pixel 700 are also separated by a black matrix, and the reflection layer 350 is arranged between the second color block and the upper glass substrate layer; the color film substrate 300 is provided with a first color block 330 corresponding to the transmission region 320, the color film substrate 300 is provided with a reflective layer 350 and a second color block 340 corresponding to the reflective region 310, the reflective layer 350 and the second color block 340 are stacked, and the second color block 340 is disposed between the liquid crystal layer 400 and the reflective layer 350; the first color block 330 and the second color block 340 are disposed at intervals, and a light shielding layer 360 is disposed between any two adjacent first color blocks 330 and second color blocks 340.
Since the light of the reflective region 310 needs to pass through the second color block 340 again after passing through the reflective layer 350, the second color block 340 needs to pass through the second color block 340 twice, in order to prevent energy loss of the light, and in order to reduce brightness difference between the reflective region 310 and the transmissive region 320, the thickness of the second color block 340 corresponding to the reflective region 310 is set smaller than the thickness of the first color block 330 corresponding to the transmissive region 320, so that the transmittance of the second color block 340 is high, and the brightness difference between the image formed by the final reflection and the image of the transmissive region 320 is small; in addition, to maintain the flatness of each layer, the thickness of the first color block is greater than the thickness of the second color block, and the total thickness of the reflective layer and the second color block is the same as the thickness of the first color block; in order to better manufacture the color resistance layer of the sub-pixel, the color of the first color resistance block is the same as that of the second color resistance block; that is, the thickness of the first color block 330 is equal to the thickness of the second color block 340 plus the thickness of the reflective layer 350.
The black matrix 360 includes a plurality of first light shielding layers 361, and the first thin film transistor and the second thin film transistor are disposed corresponding to the first light shielding layers 361; the black matrix further includes a second light shielding layer disposed between the transmissive region and the reflective region within the same sub-pixel 700, the second light shielding layer having a width smaller than that of the first light shielding layer; specifically, a first light shielding layer 361 is disposed between two adjacent sub-pixels 700; the color film substrate 300 is provided with a second light shielding layer 362 between the first color block 330 and the second color block 340; the shading layer is arranged between the reflective sub-pixel and the transmissive sub-pixel in one pixel, so that the edge images of the transmissive sub-pixel and the reflective sub-pixel can be prevented from being mixed, and the mutual influence is avoided.
Fig. 5 is a schematic structural view of a dual display panel according to a third embodiment of the present application; as shown in fig. 5, as a third embodiment of the present application, based on a further refinement of the second embodiment, a third light shielding layer 363 is disposed on a surface of the reflective layer 350 away from the second color block 340, and a light shielding layer is disposed on the reflective layer, so that light rays in the reflective region can be further prevented from passing through the reflective layer to affect the display of the image in the transmissive region 320, where the sum of the thickness of the third light shielding layer 363, the thickness of the second color block 340, and the thickness of the reflective layer 350 is equal to the thickness of the first color block 330, so as to ensure the overall uniformity of the color film substrate, and prevent uneven thickness of the box.
Fig. 6 is an equivalent circuit schematic diagram of a dual display panel in a fourth embodiment of the present application; as a fourth embodiment of the present application, as shown in fig. 6, unlike the first embodiment, the present embodiment replaces the 2D1G in the first embodiment with the 2G1D driving architecture, and along the direction of the scan line 600, one data line is disposed between two adjacent pixels, and along the direction of the data line 800, two scan lines 600 are disposed between two adjacent reflection regions 310 and the transmission region 320; in two adjacent sub-pixels, the drain electrode of the first thin film transistor 221 of one sub-pixel and the drain electrode of the second thin film transistor 222 of the other sub-pixel are connected to the same data line, the gate electrode of the first thin film transistor 221 and the gate electrode of the second thin film transistor 222 are respectively connected to two adjacent scan lines 600, so that the same picture can be displayed simultaneously or in a time-sharing manner, if the gate electrode of the first thin film transistor 221 is connected to the first scan line, the gate electrode of the second thin film transistor 222 is connected to the second scan line, and the gate electrode of the second thin film transistor can be connected to the second scan line through the via Kong Kuaxian.
Fig. 7 is a schematic structural view of a double-sided display panel in a fifth embodiment of the present application; as shown in fig. 7, unlike the second embodiment, the 2D1G in the first embodiment is replaced by a 2G2D driving architecture, two data lines 800 are disposed between two adjacent pixels along the direction of the scanning line 600, and the drain electrode of the first thin film transistor 221 and the drain electrode of the second thin film transistor 222 are respectively connected to two adjacent data lines; two scanning lines 600 are arranged between two adjacent reflection areas 310 and transmission areas 320 along the direction of the data line 800; the sources of the first thin film transistors 221 are respectively connected to different data lines 800, and the gates of the first thin film transistors 221 and the gates of the second thin film transistors 222 are respectively connected to different scan lines 600, so that the same picture can be displayed simultaneously or in a time-sharing manner, and the same picture can be displayed on both sides or the switching can be performed in any time.
Correspondingly, for the second embodiment or the fifth embodiment, the color film substrate includes a fourth light shielding layer, the fourth light shielding layer is disposed corresponding to two data lines disposed between two adjacent pixels, and a vertical projection of the fourth light shielding layer on the array substrate completely covers the two data lines, so as to save processing time.
Fig. 8 is a schematic structural view of a display device in a sixth embodiment of the present application; as shown in fig. 8, the display device 500 includes the dual-sided display panel and the backlight module described in any of the embodiments, the backlight module 510 includes a light source assembly 520, the light source assembly 520 is disposed on a side of the array substrate 200 away from the color film substrate 300, and generally, the light source assembly 520 includes a light plate 523 and a light source 521, the light plate 523 is disposed on a side of the array substrate 200 away from the color film substrate 300, the light source 521 is disposed on the light plate 523, the light source 521 is disposed on a side of the light plate facing the array substrate 200, and the light source 521 generally adopts a white light source that emits white light; each of the light sources 521 is disposed corresponding to the first light shielding layer 361; the light emitted by the light source 521 passes through the array substrate 200 and reaches the liquid crystal layer 400, so that the light reaches the color film substrate 300 through the deflection of the liquid crystal, and the area of the light plate 523 corresponding to the reflection area 310 is transparent and is a transparent area 522; the color film substrate 300 is provided with a reflective layer 350 corresponding to the reflective region 310; the light emitted by the light source 521 passes through the transmission area 320 to form a first image a on a surface of the color film substrate 300 away from the light plate 523; the reflecting layer 350 is configured to reflect the light emitted by the light source 521 and transmit through the transparent area 522 of the light plate 523, and form a second image B on a surface of the array substrate 200 near the light plate 523.
In addition, regarding the manufacture of the light plate 523, generally, for the convenience of manufacture, a whole light plate 523 may be made transparent, or may be translucent, and may be selected according to the intensity of light reflection; the light source may be manufactured according to different areas corresponding to the light plate 523, for example, the area of the light plate 523 corresponding to the transmission area 320 may be opaque or semi-transparent, so that the other surface of the display screen in the transmission area 320 is prevented from being affected by natural light; the area of the light plate 523 corresponding to the reflective area 310 may be transparent or translucent.
Generally, the light source 521, the driving circuit of the dual-sided display panel 100, and the thin film transistor 220 are disposed corresponding to the light shielding layer 360; the area of the light plate 523 corresponding to the reflective area 310 is a transparent area, after the light source 521 on the light plate 523 emits light, the light passes through the array substrate 200, reaches the liquid crystal layer 400, and passes through the transmissive area 320 and the reflective area 310 on the color film substrate 300 from the liquid crystal layer 400; the light passing through the first color block 330 of the transmissive region 320 may cause a first image a to be displayed on a surface far from the light source 521; the light reaching the reflection area 310 passes through the second color block 340 of the reflection area 310, then the reflection layer 350 returns the light to the second color block 340, and then the light passes through the array substrate 200 through the liquid crystal layer 400, so that a second picture B is displayed on one side of the light source 521, and double-sided transparent display of the display panel is realized; and the display panel is not limited by the size of the panel, double-sided transparent display can be realized by the large-size display panel, the light source is generally selected as a mini-LED, the mini LED light source comprises a plurality of mini LED light beads, one mini LED light bead corresponds to a plurality of sub-pixels, and the mini-LEDs are distributed on the light panel in an array mode.
Fig. 9 is a schematic structural view of a display device in a seventh embodiment of the present application; fig. 10 is a schematic view of a display device according to a seventh embodiment of the present application; as shown in fig. 9 to 10, the display device includes a dual-sided display panel according to the third embodiment, a third light shielding layer 363 is disposed on a surface of the reflective layer, which is far away from the second color block 340, and a third light shielding layer 363 is disposed on the reflective layer, so as to further prevent the light of the reflective region from passing through the reflective layer 350 to affect the display of the transmissive region 320, and the light source 521 is disposed between two pixel units, generally corresponding to the light shielding layer between the two pixel units.
Fig. 11 is a schematic diagram of a driving method in an eighth embodiment of the present application; as shown in fig. 11, a driving method for driving the dual-sided display panel according to any of the above embodiments is disclosed, the driving method including the steps of:
s1: outputting a first data signal to a pixel electrode arranged in a transmission area corresponding to the sub-pixel;
s2: outputting a second data signal to a pixel electrode arranged in a reflection area corresponding to the sub-pixel;
the first data signal controls the pixel electrode of the transmission area to charge so as to display a picture corresponding to the transmission area, and the second data signal controls the pixel electrode of the reflection area to charge so as to display a picture corresponding to the reflection area.
It should be noted that, in the embodiment corresponding to the above-mentioned 2G1D architecture, the first data signal and the second data signal are the same data signal, and in the other embodiments corresponding to the architecture in which the sub-pixel transmissive region and the reflective region are connected to different data lines, the first data signal and the second data signal may be different data signals or the same data signal.
It should be noted that, the inventive concept of the present application may form a very large number of embodiments, but the application documents have limited space and cannot be listed one by one, so that on the premise of no conflict, the above-described embodiments or technical features may be arbitrarily combined to form new embodiments, and after the embodiments or technical features are combined, the original technical effects will be enhanced.
The technical scheme of the application can be widely applied to various display panels, such as TN (Twisted Nematic) display panels, IPS (In-Plane Switching) display panels, VA (Vertical Alignment) display panels, MVA (Multi-Domain Vertical Alignment) display panels.
The foregoing is a further detailed description of the present application in connection with specific alternative embodiments, and it is not intended that the practice of the present application be limited to such descriptions. It should be understood that those skilled in the art to which the present application pertains may make several simple deductions or substitutions without departing from the spirit of the present application, and all such deductions or substitutions should be considered to be within the scope of the present application.
Claims (7)
1. The display device comprises a double-sided display panel and a backlight module, wherein the double-sided display panel comprises an array substrate, a color film substrate and a liquid crystal layer, the liquid crystal layer is arranged between the array substrate and the color film substrate, the array substrate comprises a plurality of pixel units, each pixel unit comprises a plurality of sub-pixels, and the display device is characterized in that each sub-pixel comprises a transmission area and a reflection area, and the transmission area of the sub-pixel and the reflection area of the sub-pixel are respectively connected and controlled through independent active switches; a reflecting layer is arranged on the color film substrate corresponding to the reflecting area of each sub-pixel;
the backlight module comprises a light source component, wherein the light source component is arranged on one side of the array substrate, which is far away from the color film substrate; the light source component comprises a light plate and a light source, the light plate is arranged on one side of the array substrate, which is away from the color film substrate, the light source is arranged on one side of the light plate, which faces the array substrate, the area of the light plate corresponding to the reflection area is transparent, the area of the light plate corresponding to the transmission area is opaque, and the light source is a direct type light source;
the color film substrate comprises a color resistance layer, wherein the color resistance layer comprises a black matrix and color resistances, the color resistances are arranged in the color resistance layer and correspond to the sub-pixels, and the black matrix is arranged between the adjacent color resistances; the color resistance corresponding to each sub-pixel can be divided into a first color resistance block and a second color resistance block, and the first color resistance block corresponding to the transmission area of the sub-pixel and the second color resistance block corresponding to the reflection area of the sub-pixel are also separated by the black matrix; the light sources are arranged corresponding to the black matrixes;
the reflecting layer is arranged on one side, far away from the array substrate, of the second color block, and the thickness of the first color block is larger than that of the second color block;
a third shading layer is arranged on one surface of the reflecting layer, which is far away from the second color block, and the sum of the thickness of the third shading layer, the thickness of the second color block and the thickness of the reflecting layer is equal to the thickness of the first color block;
the array substrate comprises a lower glass substrate layer, wherein the lower glass substrate layer is provided with a plurality of data lines which are arranged in parallel and a plurality of scanning lines which are perpendicular to the data lines, and the scanning lines are mutually parallel; the active switch is a thin film transistor, the thin film transistor comprises a first thin film transistor and a second thin film transistor, the drain electrode of the first thin film transistor is connected with the transmission area of the sub-pixel, the drain electrode of the second thin film transistor is connected with the reflection area of the sub-pixel, two data lines are arranged between two adjacent sub-pixels along the direction of the scanning lines, and two scanning lines are arranged between two adjacent sub-pixels along the direction of the data lines; the two scanning lines are a first scanning line and a second scanning line respectively;
the source electrode of the first thin film transistor and the source electrode of the second thin film transistor are respectively connected with different data lines, and the grid electrode of the first thin film transistor and the grid electrode of the second thin film transistor are respectively connected with different scanning lines; the grid electrode of the first thin film transistor is connected with the first scanning line, and the grid electrode of the second thin film transistor is connected to the second scanning line through a Kong Kuaxian;
the first thin film transistor and the second thin film transistor corresponding to the transmission area and the reflection area receive the same data signal and/or scanning signal or receive different data signals and/or scanning signals so as to realize the simultaneous or time-sharing display of the same picture or realize the simultaneous or time-sharing display of different pictures.
2. The display device according to claim 1, wherein pixel electrodes are disposed on the array substrate corresponding to the transmissive region and the reflective region of the sub-pixel, and the pixel electrodes of the transmissive region of the sub-pixel are separated from the pixel electrodes of the reflective region of the sub-pixel.
3. The display device of claim 1, wherein the color film substrate comprises an upper transparent electrode layer and an upper glass substrate layer; the upper transparent electrode layer is arranged on one side of the color resistance layer, which is close to the array substrate, and the reflecting layer is arranged between the second color resistance block and the upper glass substrate layer.
4. The display device according to claim 1, wherein the black matrix includes a plurality of first light-shielding layers, and wherein the first thin film transistor and the second thin film transistor are provided corresponding to the first light-shielding layers;
the black matrix further includes a second light shielding layer corresponding to a portion between the transmissive region and the reflective region, the second light shielding layer having a width smaller than that of the first light shielding layer.
5. The display device of claim 4, wherein the first color block and the second color block are the same color.
6. The display device of claim 1, wherein the light source is a mini-LED, and the mini-LEDs are distributed in an array on the light panel.
7. A driving method for driving the display device according to any one of claims 1 to 6, comprising the steps of:
outputting a first data signal to a pixel electrode arranged in a transmission area corresponding to the sub-pixel;
outputting a second data signal to a pixel electrode arranged in a reflection area corresponding to the sub-pixel;
the first data signal controls the pixel electrode of the transmission area to charge so as to display a picture corresponding to the transmission area, and the second data signal controls the pixel electrode of the reflection area to charge so as to display a picture corresponding to the reflection area; the first data signal and the second data signal are the same data signal or the first data signal and the second data signal are different data signals.
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| WO2024020873A1 (en) * | 2022-07-27 | 2024-02-01 | 京东方科技集团股份有限公司 | Display panel and preparing method therefor, and display device |
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