CN113885240A - Double-sided display device and manufacturing method thereof - Google Patents
Double-sided display device and manufacturing method thereof Download PDFInfo
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- CN113885240A CN113885240A CN202111164583.8A CN202111164583A CN113885240A CN 113885240 A CN113885240 A CN 113885240A CN 202111164583 A CN202111164583 A CN 202111164583A CN 113885240 A CN113885240 A CN 113885240A
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 11
- 239000000758 substrate Substances 0.000 claims abstract description 172
- 230000005540 biological transmission Effects 0.000 claims abstract description 155
- 239000004973 liquid crystal related substance Substances 0.000 claims abstract description 20
- 239000010409 thin film Substances 0.000 claims description 21
- 125000006850 spacer group Chemical group 0.000 claims description 16
- 239000004020 conductor Substances 0.000 claims description 10
- 239000003086 colorant Substances 0.000 claims description 9
- 239000002184 metal Substances 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000012780 transparent material Substances 0.000 claims description 2
- 230000000694 effects Effects 0.000 description 14
- 238000010586 diagram Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 239000007769 metal material Substances 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 1
- 239000010408 film Substances 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 description 1
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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
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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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Abstract
The application discloses a double-sided display device and a manufacturing method thereof, and the double-sided display device comprises a first substrate, a second substrate, a backlight module and a liquid crystal layer, wherein the liquid crystal layer is arranged between the first substrate and the second substrate, the backlight module is arranged on one side of the second substrate, which is back to the first substrate, the first substrate comprises a reflection area and a first transmission area, the second substrate comprises a second transmission area and a third transmission area, and the backlight module comprises a backlight area and a fourth transmission area; the backlight area is arranged corresponding to the second transmission area, and the fourth transmission area is arranged corresponding to the third transmission area; this application is through above design to realize two-sided demonstration, and one side is reflective display, and the one side is the backlight formula demonstration.
Description
Technical Field
The application relates to the technical field of display, in particular to a double-sided display device and a manufacturing method thereof.
Background
In the traditional double-sided liquid crystal display, because a transmission type liquid crystal panel is adopted and needs to be applied to two liquid crystal display screens and corresponding backlight sources, the thickness is thick, the power consumption is high, particularly, when the display is displayed in bright outdoor, the display screen needs high brightness to be seen clearly, the backlight of the display needs high brightness, the power consumption of the display is high, and the energy conservation and emission reduction are not facilitated; the reflective display screen is characterized in that a reflective material is arranged below the liquid crystal display panel to replace a luminescent material of the transmissive display screen, when the ambient light is sufficient, the reflective display screen utilizes the light reflected by the mirror surface to illuminate the screen, and the reflective liquid crystal screen has stronger dependence on the ambient light. Therefore, it is an important subject to realize a double-sided display by combining a transmissive display and a reflective display.
Disclosure of Invention
The present application provides a dual-sided display device and a method for manufacturing the same, so as to realize dual-sided display with one side being reflective display and the other side being backlight display.
The application discloses a double-sided display device, which comprises a first substrate, a second substrate, a backlight module and a liquid crystal layer, wherein the first substrate and the second substrate are arranged oppositely, the liquid crystal layer is arranged between the first substrate and the second substrate, the backlight module is arranged on one side of the second substrate, which faces away from the first substrate, the first substrate comprises a reflection area and a first transmission area, the second substrate comprises a second transmission area and a third transmission area, and the backlight module comprises a backlight area and a fourth transmission area; the reflection region and the second transmission region are correspondingly arranged, the first transmission region and the third transmission region are correspondingly arranged, the backlight region and the third transmission region are correspondingly arranged, and the fourth transmission region and the second transmission region are correspondingly arranged.
Optionally, the reflective region includes a first thin film transistor and a first pixel electrode, the first pixel electrode is disposed on the first thin film transistor and connected to the first thin film transistor, and the first pixel electrode is made of reflective metal; a first common electrode is arranged on the second transmission area and made of a transparent conductive material; the third transmission area comprises a second thin film transistor and a second pixel electrode, the second pixel is arranged on the second thin film transistor and is connected with the second thin film transistor, and the second pixel electrode is made of a transparent conductive material; a second common electrode is arranged on the first transmission area and made of a transparent conductive material; the fourth transmission area is made of transparent materials; the reflection region and the first transmission region are arranged in a staggered mode, the second transmission region and the third transmission region are arranged in a staggered mode, the backlight region and the fourth transmission region are arranged in a staggered mode, the first pixel electrode and the first public electrode are arranged correspondingly, the second pixel electrode and the second public electrode are arranged correspondingly, and the backlight region and the second pixel electrode are arranged correspondingly.
Optionally, the reflection regions are arranged in a row along the scanning line direction to obtain a reflection region row, the first transmission regions are arranged in a row along the scanning line direction to obtain a first transmission region row, and the reflection region row and the first transmission region row are arranged in a staggered row; the second transmission regions are arranged in a row along the scanning line direction to obtain a second transmission region row, the third transmission regions are arranged in a row along the scanning line direction to obtain a third transmission region row, and the second transmission region row and the third transmission region row are arranged in a row staggered manner; the backlight areas are arranged in columns along the scanning line direction to obtain backlight area columns, the fourth transmission areas are arranged in columns along the scanning line direction to obtain fourth transmission area columns, and the backlight area columns and the fourth transmission area columns are arranged in a staggered column manner;
a first grid driving circuit is arranged on one side edge of the first substrate and connected to the reflecting area row; a second gate driving circuit is arranged on one side edge of the second substrate and connected to the second transmission region row; the first gate driving circuit and the second gate driving circuit are respectively arranged on two opposite sides of the display panel.
Optionally, the reflective regions are arranged in rows along the data line direction to obtain reflective region rows, the first transmissive regions are arranged in columns along the data line direction to obtain first transmissive region rows, and the reflective region columns and the first transmissive region columns are arranged in a staggered row; the second transmission regions are arranged in a line along the direction of the data line to obtain a second transmission region line, the third transmission regions are arranged in a line along the direction of the data line to obtain a third transmission region line, and the second transmission region line and the third transmission region line are arranged in a staggered line; the backlight areas are arranged in rows along the direction of the data line to obtain backlight area columns, the fourth transmission areas are arranged in rows along the direction of the data line to obtain fourth transmission area rows, and the backlight area rows and the fourth transmission area rows are arranged in a staggered manner in rows;
a first data driving chip is arranged on one side edge of the first substrate and connected to the reflecting area row; a second data driving chip is arranged on one side edge of the second substrate and connected to the second transmission region row; the first data driving chip and the second data driving chip are respectively arranged on two opposite sides of the display panel.
Optionally, a first color resistor is further disposed on the first substrate, and the second common electrode is correspondingly disposed on the first color resistor; the second substrate is further provided with a second color resistor, the first common electrode is correspondingly arranged on the second color resistor, the first color resistor at least comprises first sub-color resistors with two different colors, and the second color resistor at least comprises a second sub-color resistor with one color.
Optionally, M first pixel electrodes are disposed in each reflection region, M second sub color resistors are disposed in each second transmission region, and the first pixel electrodes are disposed corresponding to the second sub color resistors; each third transmission area is internally provided with N second pixel electrodes, each first transmission area is internally provided with N first sub-color resistors, and the second pixel electrodes are arranged corresponding to the first sub-color resistors; wherein M ═ N.
Optionally, P first pixel electrodes are arranged in each reflection region, Q second sub-color resistors are arranged in each second transmission region, and the first pixel electrodes are arranged corresponding to the second color resistors; q second pixel electrodes are arranged in each third transmission area, P first sub-color resistors are arranged in each first transmission area, and the second pixel electrodes are arranged corresponding to the first sub-color resistors; wherein, P ≠ Q.
Optionally, the first substrate includes a first double-sided display area and a first single-sided display area, and the reflective area and the first transmissive area are disposed corresponding to the first double-sided display area; the second substrate comprises a second double-sided display area and a second single-sided display area, and the second transmission area and the third transmission area are arranged corresponding to the second double-sided display area; the backlight module comprises a first backlight assembly and a second backlight assembly, and the first backlight assembly is arranged corresponding to the first double-sided display area and the second double-sided display area; the second backlight assembly is arranged corresponding to the first single-sided display area and the second single-sided display area; the areas of the first double-sided display area and the second double-sided display area are smaller than the areas of the first single-sided display area and the second single-sided display area.
Optionally, a spacer is disposed between the first substrate and the second substrate, and the spacer is a stripe black spacer and correspondingly disposed between the reflective region and the first transmissive region to completely separate the reflective region from the first transmissive region.
The application also discloses a manufacturing method of the double-sided display device, which comprises the following steps:
forming a reflective region and a first transmissive region on a first substrate to obtain a first substrate;
forming a second transmissive region and a third transmissive region on a second substrate to obtain a second substrate;
arranging the surface of the first substrate, which is provided with the reflecting area and the first transmission area, opposite to the surface of the second substrate, which is provided with the second transmission area and the third transmission area, and completing box alignment;
injecting liquid crystal between the first substrate and the second substrate to form a liquid crystal layer; and
assembling a backlight module on one surface of the second substrate, which is far away from the first substrate, so as to obtain the double-sided display device;
the assembled backlight module is provided with a fourth transmission area and a backlight area, wherein the backlight area is arranged corresponding to the third transmission area, and the fourth transmission area is arranged corresponding to the second transmission area.
The method comprises the steps that a reflecting area and a transmission area are arranged on a first substrate, two transmission areas are arranged on a second substrate, a backlight module is arranged on the other side, opposite to the transmission area, of the second substrate, the reflecting area of the first substrate is arranged corresponding to one transmission area of the second substrate, the transmission area of the first substrate is arranged corresponding to the other transmission area of the second substrate, the backlight area of the backlight module is arranged corresponding to the transmission area of the reflecting area of the second substrate, and the transmission area of the backlight module is arranged corresponding to the other transmission area of the second substrate, so that after the first substrate, the second substrate and the backlight module are assembled into a box, when the second substrate is seen from the direction of the second substrate, picture contents displayed after the reflection of the reflecting area of the first substrate are seen through the transmission area of the second substrate; on the contrary, when the display device is seen from the direction of the first substrate, the light emitted by the backlight module passes through the transmission region of the second substrate and then passes through the transmission region of the first substrate, and the picture content is displayed on the first substrate, so that double-sided display is realized, and one side of the display device is reflective display and the other side of the display device is backlight display.
Drawings
The accompanying drawings, which are included to provide an alternative understanding of embodiments of the application, 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 application, and that for a person skilled in the art, other drawings can be obtained as such without inventive exercise. In the drawings:
fig. 1 is a schematic diagram of a dual-sided display device according to a first embodiment of the present application;
fig. 2 is a schematic cross-sectional view of a first dual-sided display device according to a first embodiment of the present application;
FIG. 3 is a schematic view of a first substrate and a second substrate provided in a first embodiment of the present application;
fig. 4 is a schematic cross-sectional view of a second dual-sided display device according to the first embodiment of the present application;
FIG. 5 is a schematic view of a first substrate and a second substrate provided in a second embodiment of the present application;
fig. 6 is a schematic view of a first substrate and a second substrate provided in a third embodiment of the present application;
fig. 7 is a schematic cross-sectional view of a dual-sided display device according to a fourth embodiment of the present application;
fig. 8 is a schematic cross-sectional view of a dual-sided display device according to a fifth embodiment of the present application;
fig. 9 is a flowchart of a method for manufacturing a dual-sided display device according to the present application.
Wherein: 100. a double-sided display device; 200. a first substrate; 210. a reflective region; 211. a first thin film transistor; 212. a first pixel electrode; 220. a first transmissive region; 221. a second common electrode; 230. a first color resistance; 240. a first double-sided display area; 250. a first single-sided display area; 260. a first binding section; 300. a second substrate; 310. a second transmissive region; 311. a first common electrode; 320. a third transmissive region; 321. a second thin film transistor; 322. a second pixel electrode; 330. a second color resistance; 340. a second two-sided display area; 350. a second single-sided display area; 360. a second binding section; 400. a backlight module; 410. a backlight area; 420. a fourth transmissive region; 430. a first backlight assembly; 440. a second backlight assembly; 500. a liquid crystal layer; 600. a spacer.
Detailed Description
It is to be understood that the terminology, the specific structural and functional details disclosed herein are for the purpose of describing particular embodiments only, and are representative, but that the present 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 as implicitly indicating the number of technical features indicated. Thus, unless otherwise specified, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature; "plurality" means two or more. The terms "comprises" and "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 combinations thereof may be present or added.
Further, terms of orientation or positional relationship indicated by "center", "lateral", "upper", "lower", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, are described based on the orientation or relative positional relationship shown in the drawings, are simply for convenience of description of the present application, and do not indicate that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present application.
Furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly and may include both fixed and removable connections or integrally connected; can be mechanically or electrically connected; either directly or indirectly through intervening media, or through both elements. The specific meaning of the above terms in the present application can be understood as specific conditions by those of ordinary skill in the art.
The present application is described in detail below with reference to the figures and alternative embodiments.
The first embodiment:
fig. 1 is a schematic diagram of a dual-sided display device according to a first embodiment of the present disclosure, and as shown in fig. 1, a dual-sided display device 100 includes a first substrate 200, a second substrate 300, a backlight module 400 and a liquid crystal layer 500, the liquid crystal layer 500 is disposed between the first substrate 200 and the second substrate 300, the backlight module 400 is disposed on a side of the second substrate 300 opposite to the first substrate 200, the first substrate 200 includes a reflective region 210 and a first transmissive region 220, the second substrate 300 includes a second transmissive region 310 and a third transmissive region 320, and the backlight module 400 includes a backlight region 410 and a fourth transmissive region 420; the reflective region 210 and the second transmissive region 310 are disposed correspondingly, the first transmissive region 220 and the third transmissive region 320 are disposed correspondingly, the backlight region 410 and the third transmissive region 320 are disposed correspondingly, and the fourth transmissive region 420 and the second transmissive region 310 are disposed correspondingly. Through the above design, after the first substrate 200, the second substrate 300 and the backlight module 400 are aligned, when viewed from the direction of the second substrate 300, the screen content displayed after being reflected by the reflection region 210 of the first substrate 200 is seen through the transmission region of the second substrate 300; on the contrary, when viewed from the direction of the first substrate 200, the light emitted from the backlight module 400 passes through the transmission region of the second substrate 300 and then passes through the transmission region of the first substrate 200 to reach the first substrate 200, and the picture content is displayed on the first substrate 200, and one side of the display is reflective display and the other side of the display is backlight display, thereby realizing double-sided display.
The first substrate 200 includes a display region and a non-display region, the reflective region 210 and the first transmissive region 220 are disposed on the display region of the first substrate 200, the non-display region of the first substrate 200 is provided with a first binding portion 260, and a driving circuit for controlling the reflective region 210 is disposed in the first binding portion 260; the second substrate 300 includes a display area and a non-display area, the second reflective area 210 and the second transmissive area 310 are disposed on the display area of the second substrate 300, the non-display area of the second substrate 300 is provided with a second binding portion 360, and the second binding portion 360 is provided with a driving circuit controlling the second reflective area 210.
Specifically, fig. 2 shows a schematic cross-sectional view of a first double-sided display device provided in a first embodiment of the present disclosure, as shown in fig. 2, the reflective region 210 includes a first thin film transistor 211 and a first pixel electrode 212, the first pixel electrode 212 is at least partially disposed on the first thin film transistor 211 and connected to the first thin film transistor 211, and the first pixel electrode 212 is made of a reflective metal; a first common electrode 311 is disposed on the second transmissive region 310, and the first common electrode 311 is made of a transparent conductive material; the third transmissive region 320 includes a second thin film transistor 321 and a second pixel electrode 322, the second pixel electrode 322 is at least partially disposed on the second thin film transistor 321 and connected to the second thin film transistor 321, and the second pixel electrode 322 is made of a transparent conductive material; a second common electrode 221 is arranged on the first transmissive region 220, and the second common electrode 221 is made of a transparent conductive material; the fourth transmissive region 420 is made of a transmissive material; the reflective region 210 and the first transmissive region 220 are disposed in a staggered manner, the second transmissive region 310 and the third transmissive region 320 are disposed in a staggered manner, the backlight region 410 and the fourth transmissive region 420 are disposed in a staggered manner, the first pixel electrode 212 and the first common electrode 311 are disposed in a corresponding manner, the second pixel electrode 322 and the second common electrode 221 are disposed in a corresponding manner, and the backlight region 410 and the second pixel electrode 322 are disposed in a corresponding manner.
Thus, after the first substrate 200 and the second substrate 300 are aligned, when light irradiates the second substrate 300, the light passes through the first common electrode 311 and reaches the first pixel electrode 212, because the first pixel electrode 212 is made of a reflective metal material and cannot transmit light, but can reflect light, the light reflected by the first pixel electrode 212 is reflected back and passes through the first common electrode 311 to irradiate the second substrate 300, so as to realize the image display of the second substrate 300; since the second pixel electrode 322 and the first common electrode 311 are made of transparent conductive materials and only can transmit light, the light emitted from the backlight area 410 directly passes through the second pixel electrode 322 and then passes through the first common electrode 311 to irradiate the first substrate 200 with the light, so as to realize the image display of the first substrate 200, thereby realizing the effect of double-sided display.
Further, fig. 3 shows a schematic diagram of a first substrate and a second substrate provided in the first embodiment of the present application, as shown in fig. 3, the reflective regions 210 are arranged in a row along the scanning line direction to obtain a reflective region row, the first transmissive regions 220 are arranged in a row along the scanning line direction to obtain a first transmissive region row, and the reflective region row and the first transmissive region row are arranged in a row-offset manner; the second transmissive regions 310 are arranged in a row along the scanning line direction to obtain a second transmissive region row, the third transmissive regions 320 are arranged in a row along the scanning line direction to obtain a third transmissive region row, and the second transmissive region row and the third transmissive region row are arranged in a staggered row; the backlight regions 410 are arranged in a row along the scanning line direction to obtain a backlight region row, the fourth transmission regions 420 are arranged in a row along the scanning line direction to obtain a fourth transmission region row, and the backlight region row and the fourth transmission region row are arranged in a row-staggered manner; a first gate driving circuit is disposed on one side of the first substrate 200, and the first gate driving circuit is connected to the reflective region row; a second gate driving circuit is disposed at one side of the second substrate 300, and the second gate driving circuit is connected to the second transmission region row; the first gate driving circuit and the second gate driving circuit are respectively arranged on two opposite sides of the display panel.
In a Gate driver on array (GOA) circuit, a first Gate driving circuit is disposed on a first binding portion 260, a second Gate driving circuit is disposed on a second binding portion 360, scanning lines are arranged in a vertical direction of a display panel and are perpendicular to data lines, a reflective area column and a first transmissive area column are arranged in a staggered manner in the vertical direction, and a second transmissive area column and a third transmissive area column are arranged in a staggered manner in the vertical direction; at this time, the gate lines for connecting the reflective region row and the third transmissive region row are in the same direction as the reflective region 210 and the third transmissive region 320, and since the first gate driver chip is only connected to the reflective region 210 and the second gate driver chip is only connected to the third transmissive region 320, the two substrates can be separately controlled, and meanwhile, the first gate driver chip or the second gate driver chip can be turned off, so that only one substrate to be displayed can display a picture, and the control can be selected without displaying both sides, thereby saving electric quantity; the GOA devices and the GOA circuit traces are dense, and in this embodiment, the reflective regions 210 and the transparent regions are disposed in the scan line direction of the gate driving circuit, so that the driving circuit units corresponding to each row of the reflective regions 210 can occupy two rows of spaces, and thus the driving circuit region can be narrower, thereby implementing a narrow frame design in the vertical direction.
Further, fig. 4 is a schematic cross-sectional view of a second double-sided display device provided in the first embodiment of the present application, as shown in fig. 4, a first color resistor 230 is further disposed on the first substrate 200, and the second common electrode 221 is correspondingly disposed on the first color resistor 230; the second substrate 300 is further provided with a second color resistor 330, the first common electrode 311 is correspondingly disposed on the second color resistor 330, the first color resistor 230 at least includes first sub-color resistors of two different colors, and the second color resistor 330 at least includes a second sub-color resistor of one color. The first sub color resists may include color resists of three colors of red, green and blue, and the second sub color resists may also include color resists of three colors of red, green and blue, so that the first substrate 200 and the second substrate 300 may exhibit the same color display effect; of course, the first sub color resists may also include four color resists of red, green, blue and white, and the second sub color resists include three color resists of red, green and blue, so that the effect of the double-sided display is different.
Certainly, the first sub color resistor realizes color display by adopting a color resistor, and the second sub color resistor only sets a white color resistor or does not set a color resistor, so that a black-and-white picture can be realized; the second sub-color resistor can also only be provided with a transmission color resistor, so that the problems of ITO (Indium Tin Oxide, semiconductor transparent conductive layer) disconnection and the like caused by overlarge break difference can be avoided while black and white display is performed.
Furthermore, M first pixel electrodes 212 are disposed in each reflection region 210, M second sub-color resistors are disposed in each second transmission region 310, and the first pixel electrodes 212 are disposed corresponding to the second sub-color resistors; n second pixel electrodes 322 are arranged in each third transmission region 320, N first sub-color resistors are arranged in each first transmission region 220, and the second pixel electrodes 322 are arranged corresponding to the first sub-color resistors; wherein M ═ N.
Wherein, X and Y are both one, that is, a first pixel electrode 212 is disposed in each of the reflective regions 210, a second sub color resistor is disposed in each of the second transmissive regions 310, and the first pixel electrode 212 and the second sub color resistor are disposed correspondingly; each third transmissive region 320 is provided with a second pixel electrode 322 therein, each first transmissive region 220 is provided with a first sub color resistor, and the second pixel electrode 322 is disposed corresponding to the first sub color resistor. When light rays are irradiated from the second substrate 300, the color light of the second sub-color resistor is reflected by the reflective metal material of the first pixel electrode 212, and because the color resistors contain more than two colors, a plurality of pixels with different colors are formed on the second substrate 300 to be stacked into a picture to be displayed, so that the displayed picture has three-dimensional effect; the light emitted from the backlight module 400 directly irradiates the color of the first sub-color-resistance onto the first substrate 200, and a display image with a plurality of pixel stacks of different colors can also be formed.
Since one pixel electrode corresponds to one color resistor, the resolutions of the two substrates are the same, so that the display effect of the first substrate 200 is the same as that of the second substrate 300, and the same double-sided display effect is achieved. Taking the example that the reflective area columns and the first transmissive area columns are arranged in a staggered manner, along the scanning line direction, a first pixel electrode 212 and a second sub color resistor are arranged corresponding to each row of scanning lines, of course, along the scanning line direction, 3 or 6 first pixel electrodes 212 are arranged corresponding to each row of scanning lines, and it is also possible to correspondingly arrange 3 or 6 second sub color resistors; as shown in fig. 4, the number of the first pixel electrode 212 and the first switch is only one, but this is only because it is difficult to embody a larger number, and does not represent that only one is included in an actual panel, the number of the first pixel electrode 212 and the first thin film transistor 211 needs to be equivalent to the number of the second sub-color resistors, and the number of the second pixel electrode 322 and the second thin film transistor 321 needs to be equivalent to the number of the first sub-color resistors.
For example, three first pixel electrodes 212 are disposed in each of the reflective regions 210, three first sub color resistors, i.e., a first color resistor, a second color resistor, and a third color resistor, are disposed in each of the second transmissive regions 310, and each of the first pixel electrodes 212 is disposed in one-to-one correspondence with the first color resistor, the second color resistor, and the third color resistor; each third transmissive region 320 is provided with three second pixel electrodes 322, each first transmissive region 220 is provided with three second sub color resistors, i.e., a fourth color resistor, a fifth color resistor, and a sixth color resistor, and each second pixel electrode 322 is respectively arranged in one-to-one correspondence with the fourth color resistor, the fifth color resistor, and the sixth color resistor.
Three first pixel electrodes 212 are arranged, and three color resistors corresponding to the three first pixel electrodes are arranged in the second transmissive region 310, and the colors of the color resistors are increased, so that the types of color lights reflected by the first pixel electrodes 212 are more, the stacked image effect is finer, and the visual effect after the second substrate 300 is displayed is better; similarly, the number of the second pixel electrodes 322 is three, and three color resistors corresponding to the second pixel electrodes are arranged in the first transmissive region 220, so that light emitted through the backlight region 410 penetrates through the third transmissive region 320 to be correspondingly transmitted to the three color resistors, and the color corresponding to the color resistors is irradiated to the first substrate 200, so that the types of color lights are more, the image effect of the stacked image is finer, and the visual effect of the first substrate 200 after display is better.
The pixel electrodes and the color resistors can be arranged in a one-to-one staggered manner, or in a three-to-three staggered manner (equivalent to a staggered one-to-one pixel arrangement), or in a nine-to-nine staggered manner (namely a staggered three-to-three pixel arrangement), generally, in order to ensure that the display panel does not have too large granular sensation, the staggered three-to-three pixel arrangement is better in the display panel used in daily life; of course, in the case of a billboard, etc., it is preferable to arrange at least three pixels in a staggered manner, which is also easier to be completed in terms of manufacturing process.
Second embodiment:
fig. 5 is a schematic diagram of a first substrate and a second substrate according to a second embodiment of the present disclosure, and as shown in fig. 5, this embodiment is different from the first embodiment in that the reflective regions 210 are arranged in a row along a data line direction to obtain a reflective region row, the first transmissive regions 220 are arranged in a row along a data line direction to obtain a first transmissive region row, and the reflective region row and the first transmissive region row are arranged in a staggered row; the second transmissive regions 310 are arranged in a row along the data line direction to obtain a second transmissive region row, the third transmissive regions 320 are arranged in a row along the data line direction to obtain a third transmissive region row, and the second transmissive region row and the third transmissive region row are arranged in a staggered row; the backlight regions 410 are arranged in a row along the direction of the data line to obtain a backlight region row, the fourth transmission regions 420 are arranged in a row along the direction of the data line to obtain a fourth transmission region row, and the backlight region row and the fourth transmission region row are arranged in a staggered row; a first data driving chip is arranged on one side of the first substrate 200, and the first data driving chip is connected to the reflecting area row; a second data driving chip is disposed on one side of the second substrate 300, and the second data driving chip is connected to the second transmissive region row; the first data driving chip and the second data driving chip are respectively arranged on two opposite sides of the display panel.
The first data driving chip is disposed on the first binding portion 260, and the second data driving chip is disposed on the second binding portion 360, wherein the data lines are arranged along a horizontal direction of the display panel, so that the reflective area line and the first transmissive area line are disposed in a staggered manner along the horizontal direction, and the second transmissive area line and the third transmissive area line are disposed in a staggered manner along the vertical direction; at this time, the data lines for connecting the reflective region line and the third transmissive region line are in the same direction as the reflective region 210 and the third transmissive region 320, and when the display operates, the data driving chip transmits signals to the display region of the display panel through the data lines, and after the first substrate 200 and the second substrate 300 are aligned, since the first data driving chip is only connected to the reflective region and the second data driving chip is only connected to the third transmissive region, the two substrates can be respectively controlled to display different picture contents; moreover, each data driving chip only needs to control signal line routing with a part of the resolution (for example, half of the resolution respectively), so that the space of the non-display area for setting the signal lines can be designed to be narrower, and the narrow frame design in the horizontal direction can be realized.
Of course, the reflective region 210 and the first transmissive region 220 may be arranged in a dot offset manner along both the data line direction and the scan line direction; the second transmissive region 310 and the third transmissive region 320 are arranged in a point-staggered manner in both the data line direction and the scan line direction; the backlight regions 410 and the fourth transmission regions 420 are also arranged in a point-staggered manner in the data line direction and the scanning line direction, so that each formed reflection region 210 corresponds to each second transmission region 310 one by one, each first transmission region 220 corresponds to each third transmission region 320 one by one, each backlight region 410 corresponds to each third transmission region 320 one by one, and each fourth transmission region 420 corresponds to each second transmission region 310 one by one, therefore, the point-to-point manner between the reflection regions 210 and the transparent regions is correspondingly arranged, the accuracy of the two corresponding regions is higher, and the deviation is smaller.
The third embodiment:
fig. 6 is a schematic diagram of a first substrate and a second substrate according to a third embodiment of the present disclosure, and as shown in fig. 6, unlike the first and second embodiments, P first pixel electrodes 212 are disposed in each of the reflective regions 210, Q second sub-color resistors are disposed in each of the second transmissive regions 310, and the first pixel electrodes 212 are disposed corresponding to the second sub-color resistors; each third transmissive region 320 is provided with Q second pixel electrodes 322, each first transmissive region 220 is provided with P first sub-color resistors, and the second pixel electrodes 322 are arranged corresponding to the first sub-color resistors; wherein, P ≠ Q.
Thus, in the direction along the data line, the resolution of the area where the number of the pixel electrodes is larger than that of the color resistors is higher than that of the area where the number of the pixel electrodes is smaller than that of the color resistors, and different display effects of the two substrates are achieved. Of course, different numbers of pixel electrodes and color numbers may be arranged along the scanning line to achieve different resolutions between the two substrates.
The fourth embodiment:
fig. 7 is a schematic cross-sectional view of a dual-sided display device according to a fourth embodiment of the present disclosure, and as shown in fig. 7, this embodiment is different from the first, second, and third embodiments in that the first substrate 200 includes a first dual-sided display area 240 and a first single-sided display area 250, and the reflective area 210 and the first transmissive area 220 are disposed corresponding to the first dual-sided display area 240; the second substrate 300 includes a second double-sided display region 340 and a second single-sided display region 350, and the second transmissive region 310 and the third transmissive region 320 are disposed corresponding to the second double-sided display region 340; the backlight module 400 includes a first backlight assembly 430 and a second backlight assembly 440, wherein the first backlight assembly 430 is disposed corresponding to the first dual-sided display area 240 and the second dual-sided display area 340; the second backlight assembly 440 is disposed corresponding to the first single-sided display area 250 and the second single-sided display area 350; the areas of the first dual-sided display area 240 and the second dual-sided display area 340 are smaller than the areas of the first single-sided display area 250 and the second single-sided display area 350.
Therefore, only the partial double-sided display effect is achieved, and the method can be particularly applied to some special cases, for example, only date or time needs to be displayed in a double-sided display area, and because the date and time does not need too large display space, too large display pictures are not needed, so that the double-sided display area can be made small, and the single-sided display area is relatively large, so that different display requirements can be achieved.
In addition, the backlight of the single-sided display area and the backlight of the double-sided display area can be controlled independently, and the brightness is possibly slightly lower due to the structures such as the reflection area 210 and the like in the double-sided display area, so that the brightness of the backlight at the position can be locally increased to reduce the brightness difference; in addition, the double-sided display area is preferably arranged at the upper left corner or the upper right corner of the screen so as to weaken the influence on the display effect; the design of this embodiment, taking a mobile phone screen as an example, if charging is temporarily impossible, only the double-sided display area may be controlled to work, or even only the reflective back-side display area in the double-sided display area is controlled to work, and the area is sufficient to display information such as time or mobile phone number, and under the situation that charging is impossible, the most basic functions of the mobile phone are ensured to deal with special situations; of course, in daily life, the double-sided display area can also display information such as time and the like on the back surface so as to be distinguished from other mobile phones and embody individuation and the like. The structures of the first single-sided display area 250 and the second single-sided display area 350 may be manufactured by referring to the existing LCD panel, and are not described herein again.
Fifth embodiment:
fig. 8 is a schematic cross-sectional view of a dual-sided display device according to a fifth embodiment of the present invention, and as shown in fig. 8, this embodiment is different from the first, second, third and fourth embodiments in that a spacer 600 is disposed between the first substrate 200 and the second substrate 300, and the spacer 600 is a stripe-shaped black spacer 600 correspondingly disposed between the reflective region 210 and the first transmissive region 220 to completely separate the reflective region 210 and the first transmissive region 220. That is, in the case of the column arrangement, the length of the spacer 600 is the same as the width of the display panel in the column direction, and in the case of the row arrangement, the length of the spacer 600 is the same as the width of the display panel in the lateral direction. Spacer 600 can play the effect of supporting to two base plates on the one hand like this, and on the other hand spacer 600 adopts the setting of black bar form and interval completely, and black material can play better shading effect to two adjacent light sources, completely cuts off light interference.
Of course, when the spacer 600 is provided in the embodiment of the dot offset arrangement, the length of the spacer 600 matches the size of each pixel.
Fig. 9 is a flowchart of a method for manufacturing a dual-sided display device provided in the present application, including the steps of:
s1: forming a reflective region and a first transmissive region on a first substrate to obtain a first substrate;
s2: forming a second transmissive region and a third transmissive region on a second substrate to obtain a second substrate;
s3: arranging the surface of the first substrate, which is provided with the reflecting area and the first transmission area, opposite to the surface of the second substrate, which is provided with the second transmission area and the third transmission area, and completing box alignment;
s4: injecting liquid crystal between the first substrate and the second substrate to form a liquid crystal layer;
s5: assembling a backlight module on one side of a second substrate, which is far away from the first substrate, to obtain the double-sided display device:
s6: assembling a backlight module on one surface of the second substrate, which is far away from the first substrate, so as to obtain the double-sided display device;
the assembled backlight module is provided with a fourth transmission area and a backlight area, the backlight area is arranged corresponding to the third transmission area, and the fourth transmission area is arranged corresponding to the second transmission area.
In addition, the step S1 or the step S2 further includes a film structure such as a step of forming black strip-shaped dislocations, which is specifically shown in fig. 1 to 8.
It should be noted that, the limitations of each step in the present disclosure are not considered to limit the order of the steps without affecting the implementation of the specific embodiments, and the steps written in the foregoing may be executed first, or executed later, or even executed simultaneously, and as long as the present disclosure can be implemented, all the steps should be considered as belonging to the protection scope of the present application.
It should be noted that the inventive concept of the present application can form many embodiments, but the present application has a limited space and cannot be listed one by one, so that, on the premise of no conflict, any combination between the above-described embodiments or technical features can form a new embodiment, and after the embodiments or technical features are combined, the original technical effect will be enhanced.
The technical solution of the present application can be widely applied to various display panels, such as TN (Twisted Nematic) display panel, IPS (In-Plane Switching) display panel, VA (Vertical Alignment) display panel, MVA (Multi-Domain Vertical Alignment) display panel, and of course, other types of display panels may be used, and the above solution can be applied.
The foregoing is a more detailed description of the present application in connection with specific alternative embodiments, and the specific implementations of the present application are not to be considered limited to these descriptions. For those skilled in the art to which the present application pertains, several simple deductions or substitutions may be made without departing from the concept of the present application, and all should be considered as belonging to the protection scope of the present application.
Claims (10)
1. A double-sided display device comprises a first substrate, a second substrate, a backlight module and a liquid crystal layer, wherein the first substrate and the second substrate are arranged oppositely, the liquid crystal layer is arranged between the first substrate and the second substrate, the backlight module is arranged on one side of the second substrate, which is opposite to the first substrate,
the first substrate comprises a reflection area and a first transmission area, the second substrate comprises a second transmission area and a third transmission area, and the backlight module comprises a backlight area and a fourth transmission area;
the reflection region and the second transmission region are correspondingly arranged, the first transmission region and the third transmission region are correspondingly arranged, the backlight region and the third transmission region are correspondingly arranged, and the fourth transmission region and the second transmission region are correspondingly arranged.
2. The dual-sided display device of claim 1, wherein the reflective region includes a first thin film transistor and a first pixel electrode, the first pixel electrode is disposed on and connected to the first thin film transistor, and the first pixel electrode is made of a light-reflecting metal; a first common electrode is arranged on the second transmission area and made of a transparent conductive material;
the third transmission area comprises a second thin film transistor and a second pixel electrode, the second pixel is arranged on the second thin film transistor and is connected with the second thin film transistor, and the second pixel electrode is made of a transparent conductive material; a second common electrode is arranged on the first transmission area and made of a transparent conductive material;
the fourth transmission area is made of transparent materials;
the reflection region and the first transmission region are arranged in a staggered mode, the second transmission region and the third transmission region are arranged in a staggered mode, the backlight region and the fourth transmission region are arranged in a staggered mode, the first pixel electrode and the first public electrode are arranged correspondingly, the second pixel electrode and the second public electrode are arranged correspondingly, and the backlight region and the second pixel electrode are arranged correspondingly.
3. The dual-sided display device of claim 2, wherein the reflective regions are arranged in columns along a scanning line direction to obtain a column of reflective regions, the first transmissive regions are arranged in columns along the scanning line direction to obtain a column of first transmissive regions, and the column of reflective regions and the column of first transmissive regions are arranged in a staggered column arrangement;
the second transmission regions are arranged in a row along the scanning line direction to obtain a second transmission region row, the third transmission regions are arranged in a row along the scanning line direction to obtain a third transmission region row, and the second transmission region row and the third transmission region row are arranged in a row staggered manner;
the backlight areas are arranged in columns along the scanning line direction to obtain backlight area columns, the fourth transmission areas are arranged in columns along the scanning line direction to obtain fourth transmission area columns, and the backlight area columns and the fourth transmission area columns are arranged in a staggered column manner;
a first grid driving circuit is arranged on one side edge of the first substrate and connected to the reflecting area row; a second gate driving circuit is arranged on one side edge of the second substrate and connected to the second transmission region row;
the first gate driving circuit and the second gate driving circuit are respectively arranged on two opposite sides of the display panel.
4. The dual-sided display device of claim 2, wherein the reflective regions are arranged in rows along a data line direction to obtain rows of reflective regions, the first transmissive regions are arranged in columns along the data line direction to obtain rows of first transmissive regions, and the columns of reflective regions and the columns of first transmissive regions are arranged in a staggered row;
the second transmission regions are arranged in a line along the direction of the data line to obtain a second transmission region line, the third transmission regions are arranged in a line along the direction of the data line to obtain a third transmission region line, and the second transmission region line and the third transmission region line are arranged in a staggered line;
the backlight areas are arranged in rows along the direction of the data line to obtain backlight area columns, the fourth transmission areas are arranged in rows along the direction of the data line to obtain fourth transmission area rows, and the backlight area rows and the fourth transmission area rows are arranged in a staggered manner in rows;
a first data driving chip is arranged on one side edge of the first substrate and connected to the reflecting area row; a second data driving chip is arranged on one side edge of the second substrate and connected to the second transmission region row;
the first data driving chip and the second data driving chip are respectively arranged on two opposite sides of the display panel.
5. The dual-sided display device of claim 2, wherein the first substrate further has a first color resistor disposed thereon, and the second common electrode is disposed on the first color resistor; the second substrate is further provided with a second color resistor, the first common electrode is correspondingly arranged on the second color resistor, the first color resistor at least comprises first sub-color resistors with two different colors, and the second color resistor at least comprises a second sub-color resistor with one color.
6. The dual-sided display device of claim 5, wherein M first pixel electrodes are disposed in each of the reflective regions, M second sub-color resistors are disposed in each of the second transmissive regions, and the first pixel electrodes are disposed corresponding to the second sub-color resistors;
each third transmission area is internally provided with N second pixel electrodes, each first transmission area is internally provided with N first sub-color resistors, and the second pixel electrodes are arranged corresponding to the first sub-color resistors;
wherein M ═ N.
7. The dual-sided display device of claim 5, wherein P first pixel electrodes are disposed in each of the reflective regions, Q second sub-color resistors are disposed in each of the second transmissive regions, and the first pixel electrodes are disposed corresponding to the second sub-color resistors;
q second pixel electrodes are arranged in each third transmission area, P first sub color resistors are arranged in each first transmission area, and the second common electrode is arranged corresponding to the first sub color resistors;
wherein, P ≠ Q.
8. The dual-sided display device of claim 1, wherein the first substrate includes a first dual-sided display region and a first single-sided display region, the reflective region and the first transmissive region being disposed corresponding to the first dual-sided display region; the second substrate comprises a second double-sided display area and a second single-sided display area, and the second transmission area and the third transmission area are arranged corresponding to the second double-sided display area;
the backlight module comprises a first backlight assembly and a second backlight assembly, and the first backlight assembly is arranged corresponding to the first double-sided display area and the second double-sided display area; the second backlight assembly is arranged corresponding to the first single-sided display area and the second single-sided display area;
the areas of the first double-sided display area and the second double-sided display area are smaller than the areas of the first single-sided display area and the second single-sided display area.
9. The dual-sided display device of claim 1, wherein a spacer is disposed between the first substrate and the second substrate, the spacer being a stripe-shaped black spacer correspondingly disposed between the reflective region and the first transmissive region to completely separate the reflective region and the first transmissive region.
10. A method of manufacturing a double-sided display device, for manufacturing a double-sided display device according to any one of claims 1 to 9, comprising the steps of:
forming a reflective region and a first transmissive region on a first substrate to obtain a first substrate;
forming a second transmissive region and a third transmissive region on a second substrate to obtain a second substrate;
arranging the surface of the first substrate, which is provided with the reflecting area and the first transmission area, opposite to the surface of the second substrate, which is provided with the second transmission area and the third transmission area, and completing box alignment;
injecting liquid crystal between the first substrate and the second substrate to form a liquid crystal layer; and
assembling a backlight module on one surface of the second substrate, which is far away from the first substrate, so as to obtain the double-sided display device;
the assembled backlight module is provided with a fourth transmission area and a backlight area, wherein the backlight area is arranged corresponding to the third transmission area, and the fourth transmission area is arranged corresponding to the second transmission area.
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Application publication date: 20220104 |