CN110895374A - Display panel and display device - Google Patents
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- CN110895374A CN110895374A CN201911173295.1A CN201911173295A CN110895374A CN 110895374 A CN110895374 A CN 110895374A CN 201911173295 A CN201911173295 A CN 201911173295A CN 110895374 A CN110895374 A CN 110895374A
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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
- G02F1/13306—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
- G02F1/1334—Constructional arrangements; Manufacturing methods based on polymer dispersed liquid crystals, e.g. microencapsulated liquid crystals
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1343—Electrodes
- G02F1/134309—Electrodes characterised by their geometrical arrangement
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
- H10K59/123—Connection of the pixel electrodes to the thin film transistors [TFT]
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
- H10K59/131—Interconnections, e.g. wiring lines or terminals
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/60—OLEDs integrated with inorganic light-sensitive elements, e.g. with inorganic solar cells or inorganic photodiodes
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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
- G02F1/13306—Circuit arrangements or driving methods for the control of single liquid crystal cells
- G02F1/13324—Circuits comprising solar cells
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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
- G02F1/1334—Constructional arrangements; Manufacturing methods based on polymer dispersed liquid crystals, e.g. microencapsulated liquid crystals
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- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
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Abstract
The invention discloses a display panel and a display device, which relate to the technical field of display and comprise: the liquid crystal display panel comprises a first substrate, a second substrate and liquid crystal, wherein the first substrate and the second substrate are arranged oppositely; the first substrate includes: a first substrate and a first electrode layer; the second substrate comprises a second substrate, a photoelectric conversion layer and a second electrode layer; the orthographic projection of the photoelectric conversion layer on the plane of the second substrate is positioned in the display area and at least part of the non-display area; the photoelectric conversion layer comprises a first transmission electrode layer, a photoelectric conversion film and a second transmission electrode layer; the first electric signal transmission end and the second electric signal transmission end are positioned in the non-display area, the first electric signal transmission end is electrically connected with the first transmission electrode layer, and the second electric signal transmission end is electrically connected with the second transmission electrode layer; the photoelectric conversion layer converts the optical signal into an electric signal, transmits the formed electric signal to the first electric signal transmission end and the second electric signal transmission end, and provides a working power supply for the display panel. Therefore, the solar energy is used for supplying power, so that the production cost is reduced, and the environment is protected.
Description
Technical Field
The present invention relates to the field of display technologies, and in particular, to a display panel and a display device.
Background
With the development of science and technology, the manufacture of display panels is mature, and more display panels are widely applied to the daily life and work of people, so that great convenience is brought to the daily life and work of people. Conventional Display panels mainly include Liquid Crystal Display (LCD), Organic Light Emitting Display (OLED), plasma Display panel, and the like.
Display panels have been applied to various aspects of people's life and work, and in addition to normal display devices such as mobile phones, notebook computers, televisions, etc., display panels have also been applied to small display devices such as label display devices and watches with display screens. Taking the label display device as an example, because its is small, mostly adopt button cell power supply at present, if refresh many, need change button cell about 1 year, consider that label display device's market volume is big, a large amount of battery change not only with high costs and to the influence of environment very big.
Disclosure of Invention
In view of this, the invention provides a display panel and a display device, which supply power to a product through solar energy without using a button cell, thereby reducing the production cost and being beneficial to environmental protection.
In a first aspect, the present application provides a display panel comprising: a display area and a non-display area surrounding the display area; the display panel includes:
the liquid crystal display panel comprises a first substrate, a second substrate and liquid crystal filled between the first substrate and the second substrate, wherein the first substrate and the second substrate are oppositely arranged;
the first substrate includes: the first electrode layer is arranged on one side, facing the second substrate, of the first substrate;
the second substrate includes: the photoelectric conversion layer is arranged on one side, facing the first substrate, of the second substrate, and the second electrode layer is arranged on one side, far away from the second substrate, of the photoelectric conversion layer; the orthographic projection of the photoelectric conversion layer on the plane of the second substrate is positioned in the display area and at least part of the non-display area; the photoelectric conversion layer comprises a first transmission electrode layer, a photoelectric conversion film and a second transmission electrode layer which are sequentially arranged along a direction perpendicular to the plane of the second substrate, and the first transmission electrode layer is positioned on one side of the photoelectric conversion film close to the second substrate;
a first electrical signal transmission terminal and a second electrical signal transmission terminal located in the non-display area, wherein the first electrical signal transmission terminal is electrically connected with the first transmission electrode layer, and the second electrical signal transmission terminal is electrically connected with the second transmission electrode layer; the photoelectric conversion layer converts the optical signal into an electrical signal, transmits the formed electrical signal to the first electrical signal transmission end and the second electrical signal transmission end, and provides a working power supply for the display panel.
In a second aspect, the present application further provides a display device including the display panel provided by the present application.
Compared with the prior art, the display panel and the display device provided by the invention at least realize the following beneficial effects:
in the display panel and the display device provided by the application, the display panel comprises a first substrate, a first substrate and liquid crystal filled between the first substrate and a second substrate. In particular, the first base plate comprises a first substrate and a first electrode layer positioned on one side of the first substrate facing the second base plate; the second substrate includes a second substrate, a second electrode layer, and a photoelectric conversion layer between the second substrate and the second electrode layer. The photoelectric conversion layer is positioned in the display area and at least part of the non-display area. When receiving light irradiation, the photoelectric conversion film converts light energy into electric energy and transmits the electric energy to the first electric signal transmission end and the second electric signal transmission end. The first electric signal transmission end and the second electric signal transmission end directly or indirectly supply electric energy to the display panel, so that voltage for driving liquid crystal to deflect is formed between the first electrode layer and the second electrode layer, and normal display functions of the display panel and the display device are achieved. The display panel and the display device utilize the electric energy of solar energy conversion to exert the display function, and button cells in the prior art are replaced, so that the production cost of the display panel and the display device is reduced, the influence of the button cells on the environment is reduced, and the environment is protected.
Of course, it is not necessary for any product in which the present invention is practiced to achieve all of the above-described technical effects simultaneously.
Other features of the present invention and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, which proceeds with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.
Fig. 1 is a top view of a display panel according to an embodiment of the present disclosure;
FIG. 2 is an AA' cross-sectional view of the display panel provided in the embodiment of FIG. 1;
fig. 3 is a diagram illustrating a relative position relationship between a photoelectric conversion layer and a display region and a non-display region in a display panel according to an embodiment of the present disclosure;
fig. 4 is a diagram illustrating a relative position relationship between a first transmission electrode and a second substrate in a display panel according to an embodiment of the present application;
FIG. 5 is another cross-sectional view AA' of the display panel provided in the embodiment of FIG. 1;
fig. 6 is a diagram illustrating a relative position relationship between the first transmission electrode layer and the second substrate corresponding to the display panel provided in the embodiment of fig. 5;
fig. 7 is a diagram illustrating another relative position relationship between the first transmission electrode layer and the second substrate corresponding to the display panel provided in the embodiment of fig. 5;
fig. 8 is a schematic layout view of a second electrode on a second electrode layer in a display panel according to an embodiment of the present disclosure;
FIG. 9 is an alternative AA' cross-sectional view of the display panel provided in the embodiment of FIG. 1;
FIG. 10 is a circuit diagram of a pixel corresponding to the embodiment of FIG. 9;
fig. 11 is a schematic structural diagram of a display device according to an embodiment of the present disclosure.
Detailed Description
Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.
The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.
Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.
In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
The following detailed description is to be read in connection with the drawings and the detailed description.
Fig. 1 is a top view of a display panel provided in an embodiment of the present application, and fig. 2 is an AA' cross-sectional view of the display panel provided in the embodiment of fig. 1, please refer to fig. 1-2, the present application provides a display panel 100, including: a display area 10 and a non-display area 11 surrounding the display area 10; the display panel 100 includes:
a first substrate 20 and a second substrate 30 disposed opposite to each other, and a liquid crystal 70 filled between the first substrate 20 and the second substrate 30;
the first substrate 20 includes: a first substrate 21 and a first electrode layer 22 provided on a side of the first substrate 21 facing the second substrate 30;
the second substrate 30 includes: a second substrate 31, a photoelectric conversion layer 40 disposed on a side of the second substrate 31 facing the first substrate 20, a second electrode layer 32 disposed on a side of the photoelectric conversion layer 40 away from the second substrate 31; the orthographic projection of the photoelectric conversion layer 40 on the plane of the second substrate 31 is positioned in the display area 10 and at least part of the non-display area 11; the photoelectric conversion layer 40 comprises a first transmission electrode layer 41, a photoelectric conversion film 42 and a second transmission electrode layer 43 which are arranged in sequence along a direction perpendicular to the plane of the second substrate 31, wherein the first transmission electrode layer 41 is positioned on one side of the photoelectric conversion film 42 close to the second substrate 31;
a first electrical signal transmission terminal 71 and a second electrical signal transmission terminal 72 located at the non-display region 11, the first electrical signal transmission terminal 71 being electrically connected to the first transmission electrode layer 41, the second electrical signal transmission terminal 72 being electrically connected to the second transmission electrode layer 43; the photoelectric conversion layer 40 converts the optical signal into an electrical signal and transmits the formed electrical signal to the first electrical signal transmission terminal 71 and the second electrical signal transmission terminal 72 to provide an operating power source for the display panel 100.
It should be noted that fig. 1 only shows a schematic top view of the display panel 100 in the present application, the structure of the display panel 100 is not limited to the square shape shown in fig. 1, and in some other embodiments of the present application, the display panel 100 may also be embodied as a circle, an oval or other shape, which is not specifically limited in this application. Fig. 2 shows a cross-sectional view of the second substrate 30, which only shows the relative position of the film layers, and does not represent actual dimensions.
Specifically, referring to fig. 1-2, a display panel 100 provided in the embodiment of the present disclosure includes a first substrate 20, and a liquid crystal 70 filled between the first substrate 20 and a second substrate 30. In particular, the first substrate 20 comprises a first substrate 21 and a first electrode layer 22 located on the side of the first substrate 21 facing the second substrate 30; the second substrate 30 includes a second substrate 31, a second electrode layer 32, and a photoelectric conversion layer 40 located between the second substrate 31 and the second electrode layer 32. The photoelectric conversion layer 40 is disposed in the display region 10 and at least a portion of the non-display region 11, and the position relationship between the photoelectric conversion layer 40 and the display region 10 and the non-display region 11 can be seen in fig. 3, and fig. 3 is a diagram illustrating a relative position relationship between the photoelectric conversion layer 40 and the display region 10 and the non-display region 11 in the display panel 100 provided in the embodiments of the present application. With continued reference to fig. 2, the photoelectric conversion layer 40 includes a first transfer electrode layer 41, a second transfer electrode layer 43, and a photoelectric conversion film 42 located between the first transfer electrode layer 41 and the second transfer electrode layer 43. Upon receiving the light irradiation, the photoelectric conversion film 42 converts light energy into electric energy, and transmits electric signals to the first and second electric signal transmission terminals 71 and 72 through the first and second transmission electrode layers 41 and 43. The first and second signal transmission terminals 71 and 72 directly or indirectly supply electrical signals to the display panel 100, so that a voltage for driving the liquid crystal 70 to deflect is formed between the first and second electrode layers 22 and 32, thereby implementing a normal display function of the display panel 100. The display panel 100 provided by the present application integrates the photoelectric conversion layer 40 in the second substrate 30, the photoelectric conversion layer 40 converts solar energy into electric energy to be provided to the display panel 100, a power supply is provided for normal display of the display panel 100, and the button cell in the prior art is replaced by the introduction of the photoelectric conversion layer 40, so that the production cost of the display panel 100 is favorably reduced, the influence of the button cell on the environment is favorably reduced, and the environmental protection is favorably realized.
In addition, the photoelectric conversion layer 40 is disposed in the display area 10 and extends to at least part of the non-display area 11, which is beneficial to increasing the illumination area of the photoelectric conversion layer 40 on the display panel 100, so that the photoelectric conversion layer 40 can absorb more solar energy, and can convert more solar energy into electric energy to provide electric energy for the display of the display panel 100, so that the electric energy converted by solar energy meets the demand of the display panel 100 on the electric energy, and thus the self-supply power supply of the display panel 100 is better realized.
It should be noted that, the first electrical signal transmission terminal 71 and the second electrical signal transmission terminal 72 in the display panel 100 provided by the present application may be electrically connected to an energy storage module (e.g., a battery, etc.), the electrical energy formed by the photoelectric conversion layer 40 is transmitted to the energy storage module through the first electrical signal transmission terminal 71 and the second electrical signal transmission terminal 72, and the energy storage module provides the electrical energy to the control module on the display panel 100. Of course, in some other embodiments in the present application, the first electrical signal transmission terminal 71 and the second electrical signal transmission terminal 72 may also be directly electrically connected to the driving chip on the display panel 100 to provide power to the driving chip on the display panel 100.
The second transmission electrode in the photoelectric conversion layer 40 in the present application can adopt ITO (indium tin oxide) setting, and the transmittance of ITO to external light is higher, and when light shines the display panel 100, light can be transmitted to the photoelectric conversion film 42 through this ITO to be favorable to promoting the effective utilization ratio of the photoelectric conversion film 42 to light. The first transmission electrode layer 41 and the second transmission electrode layer 43 in the photoelectric conversion layer 40 in the present application can be respectively embodied as a P-type semiconductor layer and an N-type semiconductor layer, the P-type semiconductor layer, the N-type semiconductor layer and the photoelectric conversion film 42 together form a P-N junction, under the irradiation of light, the P-N junction absorbs light energy and forms a new hole-electron pair, under the action of an electric field built in the P-N junction, a hole flows from the N region to the P region, an electron flows from the P region to the N region, a photo-generated electromotive force is formed, and when the photoelectric conversion layer is connected with an external circuit, the electric energy is output. The photoelectric conversion film 42 further includes a photoelectric conversion material capable of absorbing at least a part of the visible light wavelength band, for example, in this embodiment, the photoelectric conversion film 42 includes a photoelectric conversion material capable of absorbing red light of a partial wavelength band, a photoelectric conversion material capable of absorbing blue light of a partial wavelength band, and a photoelectric conversion material capable of absorbing green light of a partial wavelength band, of course, in other embodiments, the photoelectric conversion film 42 may further include a photoelectric conversion material capable of absorbing other wavelength bands such as violet light, yellow light, and the like, or the photoelectric conversion film 42 may further include a photoelectric conversion material capable of absorbing infrared light, ultraviolet light, and the like, which is not limited in this application.
Alternatively, with continued reference to fig. 2, in the display panel 100 provided in the embodiment of the present application, orthographic projections of the second transmission electrode layer 43 and the photoelectric conversion film 42 on the plane of the second substrate 31 are overlapped.
Specifically, when the orthographic projections of the second transmission electrode layer 43 and the photoelectric conversion film 42 on the plane of the second substrate 31 are overlapped, in the manufacturing process, the second transmission electrode layer 43 and the photoelectric conversion film 42 can be manufactured by using the same photolithography process (generally referred to as a "photolithography process"), and different processes do not need to be separately provided for the second transmission electrode layer 43 and the photoelectric conversion film 42, so that the manufacturing process of the display panel 100 is simplified, and the production efficiency of the display panel 100 is improved.
Optionally, with continued reference to fig. 2, the orthographic projection of the second transmission electrode layer 43 on the plane of the second substrate 31 is located within the range defined by the first transmission electrode layer 41; in the non-display region 11, an orthogonal projection of at least a part of the first transfer electrode layer 41 on the plane of the substrate base does not overlap an orthogonal projection of the second transfer electrode layer 43 on the plane of the second substrate 31.
Specifically, in the view angle shown in fig. 2, in the non-display area 11, the side of the first transmission electrode layer 41 away from the display area 10 exceeds the side of the second transmission electrode layer 43 and the side of the photoelectric conversion film 42 away from the display area 10, and thus, when the electrical connection between the first electrical signal transmission terminal 71 and the first transmission electrode layer 41 is realized, the first electrical signal transmission terminal 71 can be electrically connected with the portion of the first transmission electrode layer 41 exceeding the second electrode layer 32 by means of vertical punching, which is beneficial to simplifying the electrical connection process of the display panel 100, and meanwhile, the second transmission electrode layer 43 is prevented from affecting the electrical connection between the first transmission electrode layer and the second transmission electrode layer.
Alternatively, fig. 4 is a diagram illustrating a relative position relationship between the first transmission electrode and the second substrate 31 in the display panel 100 provided in this embodiment of the application, and in the display area 10, an orthogonal projection of the first transmission electrode layer 41 on the plane of the second substrate 31 covers the second substrate 31.
Specifically, with continued reference to fig. 4, in this embodiment, the first transmission electrode layer 41 is embodied as a planar structure, in the display area 10, the entire orthographic projection of the first transmission electrode layer 41 on the plane of the second substrate 31 covers the second substrate 31, in this case, the second transmission electrode layer 43 may also be embodied as a planar structure, and after the photoelectric conversion film 42 converts solar energy into electric energy, a voltage and a current are formed between the first transmission electrode and the second transmission electrode of the planar structure, and are directly or indirectly provided to the display panel 100 through the first electrical signal transmission terminal 71 and the second electrical signal transmission terminal 72.
Alternatively, fig. 5 is another AA' cross-sectional view of the display panel 100 provided in the embodiment shown in fig. 1, fig. 6 is a diagram showing a relative position relationship between the first transmission electrode layer and the second substrate 31 corresponding to the display panel 100 provided in the embodiment shown in fig. 5, fig. 7 is another diagram showing another relative position relationship between the first transmission electrode layer and the second substrate 31 corresponding to the display panel 100 provided in the embodiment shown in fig. 5, and in the display area 10, the first transmission electrode layer 41 includes a plurality of block electrodes or strip electrodes.
Specifically, in the embodiment shown in fig. 6, which shows a case where the first transfer electrode layer 41 includes a plurality of block electrodes 410, and in the embodiment shown in fig. 7, which shows a case where the first transfer electrode layer 41 includes a plurality of strip electrodes 411, when the first transfer electrode layer 41 includes a plurality of block electrodes 410, the second transfer electrode layer 43 may also be provided in a block electrode structure having a pattern similar to that of the first transfer electrode layer 41; when the first transfer electrode layer 41 includes a plurality of stripe electrodes 411, the second transfer electrode layer 43 may be provided in a stripe electrode structure having a shape similar to that of the first transfer electrode layer 41. When the first and second transmission electrode layers 41 and 43 include a plurality of block electrodes or a plurality of strip electrodes, the photoelectric conversion film 42 forms a plurality of voltages between the block electrodes oppositely disposed in a direction perpendicular to the plane of the second substrate 31 after converting light energy into electric energy, respectively, and the plurality of voltages form a serial structure, so that the voltages supplied to the first and second electric signal transmission terminals 71 and 72 become large. In addition, when the second transmission electrode layer 43 is configured to include the block electrodes or the strip electrodes, more light can penetrate through the gaps formed between the strip electrodes or the block electrodes to reach the photoelectric conversion film, so that the amount of light received by the photoelectric conversion film can be increased, and the effective utilization rate of light can be increased.
When the first and second transfer electrode layers 41 and 43 are provided in a block structure or a planar structure, the voltage supplied to the first and second signal transmission terminals 71 and 72 can be increased under the condition that the electric power formed by the photoelectric conversion film 42 remains unchanged. When the first and second transmission electrode layers 41 and 43 are provided as a planar structure, the current supplied to the first and second signal transmission terminals 71 and 72 can be increased under the condition that the electric power formed by the photoelectric conversion film 42 remains unchanged. Therefore, the structures of the first and second transmission electrode layers 41 and 43 can be flexibly set according to different requirements for voltage and current, so that the display panel 100 provided by the present application can meet different application requirements.
Optionally, referring to fig. 2 and fig. 8, fig. 8 is a schematic diagram illustrating an arrangement of the second electrodes 33 on the second electrode layer 32 in the display panel 100 provided in the embodiment of the present application, the second electrode layer 32 includes a plurality of second electrodes 33, the display panel 100 further includes a first metal layer 61 located between the second electrode layer 32 and the photoelectric conversion layer 40, the first metal layer 61 and the photoelectric conversion layer 40 are separated by a first insulating layer 51, and the first metal layer 61 and the second electrode layer 32 are separated by a second insulating layer 52; the first insulating layer 51 covers the surface of the second transfer electrode layer 43 away from the second substrate 31 and at least a portion of the surface of the first transfer electrode layer 41 away from the second substrate 31.
The first electrical signal transmission terminal 71 and the second electrical signal transmission terminal 72 are both located on the first metal layer 61, and the first electrical signal transmission terminal 71 is electrically connected to the first transmission electrode layer 41 through a via hole penetrating through the first insulating layer 51, and the second electrical signal transmission terminal 72 is electrically connected to the second transmission electrode layer 43 through a via hole penetrating through the first insulating layer 51.
Specifically, with continuing reference to fig. 2 and 8, each second electrode 33 corresponds to a pixel region, and the present application implements the display function of the display panel 100 by controlling the deflection of the corresponding liquid crystal 70 in each pixel region. For example, when some pixel regions in the display panel 100 are required to perform the display function, the liquid crystal 70 in the corresponding pixel region can be driven by adjusting the driving voltage between the corresponding second electrode 33 and the first electrode layer 22, and the display is realized by reflecting light, in which case the pixel region may be in a fog state. When some pixel regions do not display images, no driving voltage is formed between the second electrode 33 and the first electrode layer 22 in the corresponding pixel region, and the corresponding pixel region is in a transparent state. Therefore, during the display phase, light can also be irradiated to the photoelectric conversion layer 40 through the pixel region in the transparent state, so that conversion between light energy and electric energy can be achieved during the display phase as well.
Optionally, with continued reference to fig. 2 and fig. 8, the first metal layer 61 further includes a plurality of signal transmission traces 60, and the second electrode 33 is electrically connected to the signal transmission traces 60 through a via penetrating through the second insulating layer 52.
Specifically, in the embodiment shown in fig. 2 and 8, the second electrode 33 is directly electrically connected to the signal transmission traces 60 through the via holes penetrating through the second insulating layer 52, and usually, each signal transmission trace 60 is also electrically connected to the driving chip 200, and at this time, the driving chip 200 directly sends a control signal to the second electrode 33 through the signal transmission trace 60, so as to control the driving voltage between the second electrode 33 and the first electrode layer 22, and control the display function of each pixel region. This structure is particularly suitable for the display panel 100 with a small number of Pixels, for example, the display panel 100 has a PPI (Pixels Per inc, for pixel density) less than 350. This design is beneficial to simplifying the film structure and the wiring structure of the display panel 100 while the display panel 100 normally performs the display function, thereby being beneficial to improving the generation efficiency of the display panel 100.
Alternatively, fig. 9 is another AA' cross-sectional view of the display panel 100 provided in the embodiment shown in fig. 1, fig. 10 is a pixel circuit diagram corresponding to the embodiment shown in fig. 9, the display panel 100 further includes an array layer on the second insulating layer 52 away from the second substrate 31, and the array layer and the second electrode layer 32 are separated by a third insulating layer 53; the array layer is provided with a plurality of transistors 80, the array layer comprises an active layer 84 and a second metal layer 62, and a first pole 82 and a second pole 83 of the transistors 80 are positioned on the second metal layer 62; the second electrode 33 is electrically connected to the first pole 82 or the second pole 83 of the transistor 80 through a via hole penetrating the third insulating layer 53, and alternatively, this embodiment shows a case where the second electrode 33 is electrically connected to the second pole 83 of the transistor 80.
Specifically, with continued reference to fig. 9 and 10, this embodiment shows a scheme in which the display region 10 of the display panel 100 includes the transistor 80. In this embodiment, an array layer is introduced on the second substrate 30, a plurality of transistors 80 are disposed on the array layer, a gate 81 of the transistor 80 is located on the first metal layer 61, and a first pole 82 and a second pole 83 are located on the second metal layer 62. The first pole 82 or the second pole 83 of each transistor 80 is electrically connected to the second electrode 33 in a one-to-one correspondence. In general, when the second electrode 83 of the transistor 80 is electrically connected to the second electrode 33, the first electrode 82 thereof is connected to the driving chip 200 through a signal line. In the display process, the gate 81 of the transistor 80 receives a control signal, the transistor 80 is turned on under the control of the control signal, and at this time, the data signal is transmitted to the second electrode 33 through the signal line, so that a voltage for driving the liquid crystal 70 to deflect is generated between the second electrode 33 and the first electrode layer 22, and the display panel 100 has a display function.
Alternatively, referring to fig. 9, the first and second poles 82, 83 of the transistor 80 are in direct contact with the active layer 84. In this case, the transistor 80 is formed of amorphous silicon, and the first pole 82 and the second pole 83 can be in direct contact with the active layer 84 without providing an insulating layer between the active layer 84 and the first pole 82 and the second pole 83, and the first pole 82 and the second pole 83 are electrically connected to the active layer 84 through a via. Therefore, the transistor 80 with the amorphous silicon structure is beneficial to simplifying the manufacturing process of the display panel 100 and reducing the thickness of the display panel 100, so that the display panel 100 meets the requirement of thinning.
Optionally, the material of the liquid crystal is a polymer dispersed liquid crystal or a polymer network liquid crystal. Specifically, there are many methods for realizing transparent display, and the application adopts Polymer Dispersed Liquid Crystal (PDLC) or Polymer Network Liquid Crystal (PNLC) as the Liquid Crystal layer in the transparent display panel, where the PDLC and PNLC include high molecular Polymer, and if a low frequency voltage is applied, the Liquid Crystal molecules are in a scattering state due to the action of an electric field, and after the low frequency voltage is removed, the scattering state remains unchanged, and if a high frequency voltage is applied, the Liquid Crystal molecules are driven by the electric field to be in parallel arrangement, so that the Liquid Crystal layer displays a transparent state, and also can remain the transparent state after the high frequency voltage is removed, and because the Liquid Crystal layer is maintained in one state without continuously applying voltage, the energy consumption of the display panel is significantly reduced, and in addition, the PDLC and PNLC can make the light directly be linearly polarized light after passing through, and therefore, no polarizer is required to be arranged by using PDLC or PNLC as the material of the Liquid Crystal layer, therefore, the influence of the polaroid absorption on the transparency of the display panel can be avoided.
Based on the same inventive concept, the present application further provides a display device, please refer to fig. 11, fig. 11 is a schematic structural diagram of a display device 300 provided in the embodiments of the present application, the display device 300 includes a display panel 100, and the display panel 100 is any one of the display panels provided in the embodiments of the present application. For the embodiments of the display device 300 provided in the embodiments of the present application, reference may be made to the above embodiments of the display panel, and repeated descriptions are omitted.
The display device provided by the application can be a watch or an electronic label display, for example. The watch or the electronic label display has the advantages that the size is small, the power consumption is low, after the photoelectric conversion layer is introduced, the display requirement of the watch or the electronic label display can be met through electric energy converted from light energy, power supply parts such as a button cell do not need to be added additionally, and therefore the watch or the electronic label display is beneficial to reducing the production cost and has good environmental protection performance.
The display panel and the display device provided by the invention at least realize the following beneficial effects:
in the display panel and the display device provided by the application, the display panel comprises a first substrate, a first substrate and liquid crystal filled between the first substrate and a second substrate. In particular, the first base plate comprises a first substrate and a first electrode layer positioned on one side of the first substrate facing the second base plate; the second substrate includes a second substrate, a second electrode layer, and a photoelectric conversion layer between the second substrate and the second electrode layer. The photoelectric conversion layer is positioned in the display area and at least part of the non-display area. When receiving light irradiation, the photoelectric conversion film converts light energy into electric energy and transmits the electric energy to the first electric signal transmission end and the second electric signal transmission end. The first electric signal transmission end and the second electric signal transmission end directly or indirectly supply electric energy to the display panel, so that voltage for driving liquid crystal to deflect is formed between the first electrode layer and the second electrode layer, and normal display functions of the display panel and the display device are achieved. The display panel and the display device utilize the electric energy of solar energy conversion to exert the display function, and button cells in the prior art are replaced, so that the production cost of the display panel and the display device is reduced, the influence of the button cells on the environment is reduced, and the environment is protected.
Although some specific embodiments of the present invention have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.
Claims (12)
1. A display panel, comprising: a display area and a non-display area surrounding the display area; the display panel includes:
the liquid crystal display panel comprises a first substrate, a second substrate and liquid crystal filled between the first substrate and the second substrate, wherein the first substrate and the second substrate are oppositely arranged;
the first substrate includes: the first electrode layer is arranged on one side, facing the second substrate, of the first substrate;
the second substrate includes: the photoelectric conversion layer is arranged on one side, facing the first substrate, of the second substrate, and the second electrode layer is arranged on one side, far away from the second substrate, of the photoelectric conversion layer; the orthographic projection of the photoelectric conversion layer on the plane of the second substrate is positioned in the display area and at least part of the non-display area; the photoelectric conversion layer comprises a first transmission electrode layer, a photoelectric conversion film and a second transmission electrode layer which are sequentially arranged along a direction perpendicular to the plane of the second substrate, and the first transmission electrode layer is positioned on one side of the photoelectric conversion film close to the second substrate;
a first electrical signal transmission terminal and a second electrical signal transmission terminal located in the non-display area, wherein the first electrical signal transmission terminal is electrically connected with the first transmission electrode layer, and the second electrical signal transmission terminal is electrically connected with the second transmission electrode layer; the photoelectric conversion layer converts the optical signal into an electrical signal, transmits the formed electrical signal to the first electrical signal transmission end and the second electrical signal transmission end, and provides a working power supply for the display panel.
2. The display panel according to claim 1, wherein an orthogonal projection of the second transfer electrode layer and the photoelectric conversion film on a plane in which the second substrate is located coincides.
3. The display panel according to claim 2, wherein an orthogonal projection of the second transfer electrode layer on a plane of the second substrate is within a range defined by the first transfer electrode layer; in the non-display area, at least part of the orthographic projection of the first transmission electrode layer on the plane of the substrate base plate is not overlapped with the orthographic projection of the second transmission electrode layer on the plane of the second substrate.
4. The display panel according to claim 1, wherein in the display region, an orthogonal projection of the first transmission electrode layer on a plane in which the second substrate is located covers the second substrate.
5. The display panel according to claim 1, wherein the first transmission electrode layer includes a plurality of block electrodes or strip electrodes in the display region.
6. The display panel according to claim 1, wherein the second electrode layer comprises a plurality of second electrodes, the display panel further comprising a first metal layer between the second electrode layer and the photoelectric conversion layer, the first metal layer and the photoelectric conversion layer being separated by a first insulating layer, the first metal layer and the second electrode layer being separated by a second insulating layer; the first insulating layer covers the surface of the second transmission electrode layer far away from the second substrate and at least part of the surface of the first transmission electrode layer far away from the second substrate;
the first electrical signal transmission end and the second electrical signal transmission end are both located on the first metal layer, the first electrical signal transmission end is electrically connected with the first transmission electrode layer through a via hole penetrating through the first insulating layer, and the second electrical signal transmission end is electrically connected with the second transmission electrode layer through a via hole penetrating through the first insulating layer.
7. The display panel according to claim 6, wherein the first metal layer further comprises a plurality of signal transmission traces, and the second electrode is electrically connected to the signal transmission traces through vias penetrating the second insulating layer.
8. The display panel according to claim 6, further comprising an array layer on a side of the second insulating layer remote from the second substrate, the array layer and the second electrode layer being separated by a third insulating layer; the array layer is provided with a plurality of transistors, the array layer comprises an active layer and a second metal layer, and the first poles and the second poles of the transistors are located on the second metal layer;
the second electrode is electrically connected to the first or second pole of the transistor through a via hole penetrating the third insulating layer.
9. The display panel according to claim 8, wherein a first pole and a second pole of the transistor are in direct contact with the active layer.
10. The display panel according to claim 1, wherein the material of the liquid crystal is polymer dispersed liquid crystal or polymer network liquid crystal.
11. A display device comprising the display panel according to any one of claims 1 to 10.
12. A display device according to claim 11, wherein the display device is a watch or an electronic label display.
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| CN201911173295.1A CN110895374A (en) | 2019-11-26 | 2019-11-26 | Display panel and display device |
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| CN201911173295.1A CN110895374A (en) | 2019-11-26 | 2019-11-26 | Display panel and display device |
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