WO2024255064A1 - 像素驱动电路、驱动方法及显示装置 - Google Patents

像素驱动电路、驱动方法及显示装置 Download PDF

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Publication number
WO2024255064A1
WO2024255064A1 PCT/CN2023/127337 CN2023127337W WO2024255064A1 WO 2024255064 A1 WO2024255064 A1 WO 2024255064A1 CN 2023127337 W CN2023127337 W CN 2023127337W WO 2024255064 A1 WO2024255064 A1 WO 2024255064A1
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WO
WIPO (PCT)
Prior art keywords
layer
phase change
driving
display panel
driving circuit
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Ceased
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PCT/CN2023/127337
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English (en)
French (fr)
Inventor
李瑶
曹中林
吴川
康报虹
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HKC Co Ltd
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HKC Co Ltd
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Publication of WO2024255064A1 publication Critical patent/WO2024255064A1/zh
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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
    • G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
    • G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
    • G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]

Definitions

  • the present application relates to the field of display technology, and in particular to a driving circuit, a display panel and a display device.
  • OLED Organic Light-Emitting Diode
  • OLED Since OLED relies on its own self-luminescence, it is hoped that the ambient light can be absorbed by OLED as much as possible to avoid its reflection causing color mixing and interference with normal colors. Therefore, OLED display devices generally need to use circular polarizers, which are an assembly of a polarizer and a 1/4 wave plate, and can absorb ambient light. However, due to the large thickness of the circular polarizer, the thickness of the display panel cannot be reduced, so a new technology needs to be selected to replace the role of the circular polarizer.
  • the present application provides a driving circuit, a display panel and a display device, which mainly solve the problem that the thickness of the display panel cannot be reduced.
  • a technical solution adopted in the present application is to provide a display panel, including a driving substrate, including a driving circuit layer;
  • an anode electrode layer disposed on one side of the driving circuit layer and electrically connected to the driving circuit layer;
  • An organic light-emitting layer arranged on a side of the anode electrode layer away from the driving circuit layer, comprising a plurality of light-emitting units;
  • a cathode electrode layer disposed on a side of the organic light emitting layer away from the driving circuit layer and electrically connected to the driving circuit layer;
  • phase change structure layer which is arranged between the anode electrode layer and the driving circuit layer;
  • the phase change structure layer includes a plurality of phase change units arranged corresponding to the plurality of light-emitting units, and the phase change units include:
  • a phase change material having a first state and a second state
  • a driving element electrically connected to the driving circuit layer, and configured to drive the phase change material to be in the first state or the second state;
  • a first light absorbing layer is disposed on a side of the phase change material close to the driving circuit layer;
  • the phase change material is light-transmissive in the first state, so that the first light-absorbing layer absorbs ambient light from the outside; the phase change material is capable of reflecting light of the same color as the emitted light of the corresponding light-emitting unit in the second state.
  • the phase change material is cholesteric liquid crystal
  • the driving element comprises a first driving electrode and a second driving electrode
  • the first driving electrode and the second driving electrode are respectively arranged on opposite sides of the cholesteric liquid crystal for applying a driving voltage to the cholesteric liquid crystal.
  • the cholesteric liquid crystal is configured to be able to change from a first state to a second state under the driving voltage, and to be able to restore from the second state to the first state after the driving voltage disappears.
  • the phase change unit also includes a packaging cavity, which has a accommodating cavity; the phase change material is arranged in the accommodating cavity; the first driving electrode is arranged on a side of the packaging cavity close to the driving circuit layer, and the second driving electrode is arranged on a side of the packaging cavity close to the anode electrode layer.
  • the multiple packaging cavities of the multiple phase change units are interconnected to form a packaging layer
  • the packaging layer has a plurality of first conductive through holes arranged at intervals from the accommodating cavities
  • the anode electrode layer is electrically connected to the driving circuit layer through the first conductive through holes.
  • the plurality of second driving electrodes of the plurality of phase change units are connected to each other and electrically connected to the cathode electrode layer; the plurality of first driving electrodes of the plurality of phase change units are connected to each other and electrically connected to the cathode electrode layer; are respectively electrically connected to the driving circuit layer; or
  • the multiple first driving electrodes of the multiple phase change units are connected to each other and electrically connected to the cathode electrode layer; the multiple second driving electrodes of the multiple phase change units are respectively electrically connected to the driving circuit layer through the second conductive through holes of the packaging layer.
  • the display panel further comprises a second light absorbing layer arranged on the phase change structure layer away from the driving circuit layer; the second light absorbing layer comprises a plurality of light absorbing units, and the light absorbing units are arranged at positions corresponding to between two adjacent phase change units.
  • the anode electrode layer is a transparent electrode layer.
  • a driving circuit for driving any of the above-mentioned display panels including:
  • a driving module used for driving the phase change unit according to the determination result of the determination module
  • the driving module drives the phase change material to be in the first state through the driving element; in response to the display panel being in a display state, the driving module drives the phase change material to be in the second state through the driving element.
  • a display device comprising:
  • a display panel comprising any of the display panels mentioned above;
  • a driving circuit comprises the driving circuit mentioned above.
  • the present application provides a driving circuit, a display panel and a display device, wherein the display panel includes a driving substrate, an anode electrode layer, an organic light-emitting layer, a cathode electrode layer and a phase change structure layer.
  • the driving substrate includes a driving circuit layer; the anode electrode layer is arranged on one side of the driving circuit layer and is electrically connected to the driving circuit layer; the organic light-emitting layer is arranged on the side of the anode electrode layer away from the driving circuit layer, and also includes a plurality of light-emitting units; the cathode electrode layer is arranged on the side of the organic light-emitting layer away from the driving circuit layer and is electrically connected to the driving circuit layer; the phase change structure layer is arranged between the anode electrode layer and the driving circuit layer; the phase change structure layer includes a plurality of phase change units arranged corresponding to the plurality of light-emitting units, and the phase change unit includes a phase change material having a first state and a
  • the driving element is used to drive the phase change material to be in the first state or the second state.
  • the display panel is provided with a phase change structure layer including a phase change material and a driving element, so that the phase change material is light-transmissive in the first state, and the first light absorption layer absorbs ambient light from the outside, and can reflect light of the same color as the emitted light of the corresponding light-emitting unit in the second state; such a setting not only reduces the influence of ambient light on the display panel, but also enhances the light emitted by the organic light-emitting layer, thereby improving the luminous efficiency and contrast of the display panel; at the same time, compared with the display panel of the prior art that absorbs ambient light from the outside through a polarizer, the display panel adopts a phase change structure layer with a smaller thickness and omits a polarizer with a larger thickness, thereby effectively reducing its own thickness.
  • FIG1 is a schematic diagram of the structure of a display panel provided by an embodiment of the present application.
  • FIG2 is a schematic diagram of a display panel provided by the present application absorbing ambient light in a first state
  • FIG3 is a schematic diagram of a display panel provided by the present application reflecting ambient light in a second state
  • FIG5 is a schematic diagram of a specific structure of a phase change structure layer provided in another embodiment of the present application.
  • FIG6 is a schematic diagram of the structure of a display panel provided by another embodiment of the present application.
  • FIG7 is a schematic diagram of electrode connection provided in an embodiment of the present application.
  • FIG8 is a schematic diagram of electrode connection provided by another embodiment of the present application.
  • FIG9 is a schematic diagram of the structure of a driving circuit provided in an embodiment of the present application.
  • FIG. 10 is a schematic diagram of the structure of a display device provided in an embodiment of the present application.
  • first”, “second”, “third” in this application are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features.
  • the features defined as “first”, “second”, “third” can expressly or implicitly include at least one of the features.
  • the meaning of “multiple” is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.
  • all directional indications (such as up, down, left, right, front, back%) are only used to explain the relative position relationship, movement, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication also changes accordingly.
  • the OLED (Organic Light-Emitting Diode) display device is a self-luminous structure.
  • the OLED Organic Light-Emitting Diode
  • the external natural light will also shine on the OLED display panel. After penetrating the encapsulation layer, it will be reflected back from the metal cathode. Therefore, the reflected light from the cathode will cause great imaging interference, reduce the display contrast, and cause interference to the user when reading.
  • the dark state is not dark, so the OLED display device needs to use a circular polarizer to solve this problem.
  • the circular polarizer is an assembly composed of a linear polarizer and a 1/4 wave plate.
  • the external natural light passes through a linear polarizing film and a 1/4 phase delay film, and becomes linear polarized light and circular polarized light in turn; after being reflected by the OLED metal cathode, it becomes circularly polarized light with the opposite rotation direction; after passing through the 1/4 phase delay film, it becomes linear polarized light with a vibration direction perpendicular to the polarization direction of the linear polarizing film; the linear polarized light cannot be transmitted, thereby suppressing the reflection interference of the external ambient light.
  • the thickness of the circular polarizer is relatively large (usually about 100 um), the thickness of the display panel cannot be reduced.
  • the present application provides a driving circuit, a display panel and a display device.
  • the display panel is provided with a phase change structure layer including a phase change material, a driving element and a first light absorption layer.
  • the phase change material can transmit light in the first state, so that the first light absorption layer absorbs ambient light from the outside, reducing the influence of ambient light on the display panel; in the second state, it can reflect light of the same color as the emitted light of the corresponding light emitting unit; such a setting not only reduces the influence of ambient light on the display panel, but also enhances the light emitted by the organic light emitting layer, thereby improving the luminous efficiency and contrast of the display panel; at the same time, compared with the prior art display panel absorbing ambient light from the outside through a polarizer, the display panel adopts a phase change structure layer with a smaller thickness and omits a polarizer with a larger thickness, thereby effectively reducing the thickness of the display panel and the display device.
  • FIG1 is a schematic diagram of the structure of a display panel provided in an embodiment of the present application.
  • the present application provides a display panel 100 , which includes a drive substrate 1 , an anode electrode layer 2 , an organic light emitting layer 3 , a cathode electrode layer 4 and a phase change structure layer 5 .
  • the driving substrate 1 includes a driving circuit layer 10.
  • the anode electrode layer 2 is disposed on the driving circuit
  • the driving substrate 1 is provided on one side of the organic light-emitting layer 3 and the phase change structure layer 5, and is electrically connected to the driving circuit layer 10.
  • An anode electrode layer 2 is provided between the organic light-emitting layer 3 and the phase change structure layer 5, and the anode electrode layer 2 is electrically connected to the driving circuit layer 10 through the first conductive through hole A.
  • the driving substrate 1 also includes a substrate 11 on which the driving circuit layer 10 is provided, such as a PI flexible substrate.
  • the driving circuit layer 10 includes a thin film transistor (TFT) as well as a data line, a power line, and the like.
  • TFT thin film transistor
  • the anode electrode layer 2 is a transparent electrode layer or a semi-transparent electrode layer, so that light can at least partially pass through the anode electrode layer 2.
  • the anode electrode layer 2 is an ITO (Indium Tin Oxide) layer or other transparent conductive material layer.
  • ITO Indium Tin Oxide
  • the anode electrode layer 2 of the present application can be made of a transparent conductive material layer and does not need to have a reflective function, it is not necessary to use a conductive material containing Ag, which can effectively reduce the preparation cost.
  • the organic light-emitting layer 3 is arranged on the side of the anode electrode layer 2 away from the driving circuit layer 10, and the organic light-emitting layer 3 also includes a plurality of light-emitting units 30.
  • the plurality of light-emitting units 30 include a red light-emitting unit, a green light-emitting unit, and a blue light-emitting unit.
  • the organic light-emitting layer 3 includes a hole injection layer (HIL), a hole transport layer (H TL), a light-emitting material layer (EML), an electron transport layer (ETL), and an electron injection layer (EIL) which are stacked in sequence.
  • the cathode electrode layer 4 is disposed on a side of the organic light-emitting layer 3 away from the driving circuit layer 10 and is electrically connected to the driving circuit layer 10. Specifically, the cathode electrode layer 4 is electrically connected to the driving circuit layer 10 through the edge of the display panel 100.
  • the cathode electrode layer 4 can be a whole layer, or can be respectively disposed corresponding to a plurality of light-emitting units 30.
  • the phase change structure layer 5 is arranged between the anode electrode layer 2 and the driving circuit layer 10; the phase change structure layer 5 includes a plurality of phase change units 50 arranged corresponding to the plurality of light-emitting units 30.
  • the phase change unit 50 includes a phase change material 51 having a first state and a second state, a driving element 52 electrically connected to the driving circuit layer 10, and a first light absorption layer 6 arranged on the side of the phase change material 51 close to the driving circuit layer 10.
  • the driving element 52 is used to drive the phase change material 51 to be in the first state or the second state.
  • the specific material of the phase change material 51 is not limited, as long as it can switch between the first state and the second state, for example, it can be liquid crystal.
  • the structure of the driving element 52 is not limited, as long as it can drive the phase change material 51 to switch between the first state and the second state.
  • the way in which the driving element 52 drives the phase change material 51 to switch between the first state and the second state can be an electric field, a magnetic field, heating, illumination, etc.
  • the first light absorbing layer 6 is a light absorbing layer made of a black material.
  • FIG. 2 is a schematic diagram of the display panel provided by the present application absorbing ambient light in the first state.
  • FIG. 3 is a schematic diagram of the display panel provided by the present application reflecting ambient light in the second state.
  • the phase change material 51 can transmit light, so that the first light absorption layer 6 absorbs ambient light from the outside, so as to reduce the influence of the ambient light on the display panel 100; the phase change material 51 can reflect light of the same color as the light emitted by the corresponding light emitting unit 30 (including ambient light from the outside and light emitted by the light emitting unit 30 to one side of the phase change material 51) in the second state, so as to further enhance the light emitted by the multiple light emitting units 30 of the organic light emitting layer 3, thereby improving the luminous efficiency and contrast of the display panel 100.
  • the phase change unit 50 corresponds to a light emitting unit 30 that can emit red light
  • the phase change material 51 can reflect red light in the second state
  • the phase change unit 50 corresponds to a light emitting unit 30 that can emit green light
  • the phase change material 51 can reflect green light in the second state.
  • the plurality of phase change units 50 include a phase change unit 50 for reflecting red light, a phase change unit 50 for reflecting green light and a phase change unit 50 for reflecting blue light, which correspond to the red light emitting unit, the green light emitting unit and the blue light emitting unit respectively.
  • FIG. 4 is a schematic diagram of the specific structure of the phase change structure layer provided in an embodiment of the present application.
  • the phase change material 51 is a cholesteric liquid crystal.
  • the driving element 52 includes a first driving electrode 52a and a second driving electrode 52b; the first driving electrode 52a and the second driving electrode 52b are respectively arranged on opposite sides of the cholesteric liquid crystal, and are used to apply a driving voltage to the cholesteric liquid crystal.
  • the first driving electrode 52a is arranged on the side of the phase change material 51 close to the driving circuit layer 10
  • the second driving electrode 52b is arranged on the side of the phase change material 51 close to the anode electrode layer 2, that is, the first driving electrode 52a and the second driving electrode 52b are respectively arranged on the two sides of the phase change material 51 perpendicular to the phase change structure layer 5.
  • the material of the cholesteric liquid crystal can be a thermochromic material or a liquid crystal material. It can be understood that in other embodiments, according to the different liquid crystal materials used in the phase change material 51, the first driving electrode 52a and the second driving electrode 52b can also be respectively arranged on the two sides of the phase change material 51 parallel to the phase change structure layer 5.
  • FIG5 is a schematic diagram of the specific structure of the phase change structure layer provided in another embodiment of the present application.
  • the first drive electrode 52a and the second drive electrode 52b are arranged at intervals on the same side of the phase change material 51 away from the drive circuit layer 10, and are arranged away from the position corresponding to the phase change material 51.
  • the cholesteric liquid crystals of the same light can share the same first driving electrode 52a or the same second driving electrode 52b.
  • the driving element 52 arranged in this way does not need to use transparent materials and can still avoid blocking the light emitted by the light-emitting unit 30.
  • the cholesteric liquid crystal is configured to be able to change from the first state to the second state under the driving voltage, and to be able to recover from the second state to the first state after the driving voltage disappears. It can be understood that when the display panel 100 does not display color, the first driving electrode 52a and the second driving electrode 52b on both sides of the cholesteric liquid crystal do not provide voltage.
  • the cholesteric liquid crystal is in the first state, and the ambient light reaching the cholesteric liquid crystal through the organic light-emitting layer 3 will pass through the cholesteric liquid crystal, and the ambient light is further absorbed by the first light-absorbing layer 6, reducing the impact of the external ambient light on the display panel 100, and at the same time making the display panel 100 have a better black state when not displaying; further, the display panel 100 is generally in the non-display state for a longer time, and there is no need to apply voltage to the cholesteric liquid crystal in the non-display state, which can save energy and electricity.
  • the first driving electrode 52a and the second driving electrode 52b on both sides of the cholesteric liquid crystal provide voltage.
  • the cholesteric liquid crystal is in the second state, and the ambient light reaching the cholesteric liquid crystal through the organic light-emitting layer 3 or the light emitted by the organic light-emitting layer 3 to the side of the phase change material 51 will be reflected by the cholesteric liquid crystal, and the reflected light will pass through the organic light-emitting layer 3, thereby enhancing the light of the organic light-emitting layer 3 and improving the luminous efficiency and contrast of the display panel 100.
  • the phase change unit 50 of this embodiment further includes a packaging cavity 53.
  • the packaging cavity 53 has a receiving cavity 53a; the cholesteric liquid crystal is arranged in the receiving cavity 53a.
  • the packaging cavity 53 is a microcup, and the height of the microcup is 20um-50um; wherein the area of the receiving cavity 53a is greater than or equal to the opening area of the anode pixel (not shown), which is conducive to ensuring the pixel opening and preventing the pixel opening from being affected.
  • the first driving electrode 52a is disposed on the surface of the packaging cavity 53 on the side close to the driving circuit layer 10
  • the second driving electrode 52b is disposed on the surface of the packaging cavity 53 on the side close to the anode electrode layer 2.
  • An insulating layer (not shown) is provided between the second driving electrode 52b and the anode electrode layer 2 to ensure insulation between the second driving electrode 52b and the anode electrode layer 2.
  • the multiple packaging cavities 53 of the multiple phase change units 50 are interconnected to form a packaging layer B, and the packaging layer B has a plurality of first conductive through holes A spaced apart from the accommodating cavity 53a.
  • the anode electrode layer 2 mentioned above is electrically connected to the driving circuit layer 10 through the first conductive through hole A to achieve electrical signal transmission. It can be understood that in a specific embodiment, the specific position of the first conductive through hole A and the number of the first conductive through holes A will be designed in accordance with the design of the display panel 100 in accordance with the actual situation, and there is no limitation here, as long as the electrical connection is guaranteed.
  • FIG6 is a schematic diagram of the structure of a display panel provided in another embodiment of the present application.
  • the display panel 100 provided in this embodiment has a substantially identical structure to the display panel 100 provided in FIG1 , except that the display panel 100 in this embodiment further includes a second light absorbing layer 7 disposed on the phase change structure layer 5 away from the drive circuit layer 10.
  • the second light absorbing layer 7 includes a plurality of light absorbing units 70, and the light absorbing units 70 are disposed at positions corresponding to positions between two adjacent phase change units 50, and are used to absorb different colors of light reflected from the phase change units 50, so as to avoid color mixing between the phase change units 50.
  • the second light absorbing layer 7 may be located between the electrode layer where the second drive electrode 52b is located and the anode electrode layer 2, and may also be disposed on the same layer as the second drive electrode 52b.
  • Figure 7 is a schematic diagram of electrode connection provided in an embodiment of the present application.
  • Multiple second drive electrodes 52b of multiple phase change units 50 are interconnected.
  • the multiple second drive electrodes 52b can be connected in a mesh shape, or can be a continuous whole layer structure. As long as the multiple second drive electrodes 52b can be connected to each other, the present application does not impose any restrictions on this.
  • the multiple second drive electrodes 52b are mainly used as a continuous whole layer as an example for explanation; the multiple second drive electrodes 52b have openings corresponding to the first conductive through holes A to avoid short circuit between the second drive electrodes 52b and the anode electrode layer 2.
  • the second drive electrode 52b is electrically connected to the cathode electrode layer 4 at the edge of the display panel 100.
  • the multiple first drive electrodes 52a of the multiple phase change units 50 are each electrically connected to the drive circuit unit in the drive circuit layer 10.
  • Figure 8 is a schematic diagram of electrode connection provided in another embodiment of the present application.
  • Multiple first driving electrodes 52a of multiple phase change units 50 are interconnected.
  • the multiple first driving electrodes 52a can be connected in a mesh shape, or can be a continuous whole layer structure. As long as the multiple first driving electrodes 52a can be connected to each other, the present application does not impose any restrictions on this.
  • the first driving electrode 52a is mainly taken as a continuous whole layer as an example.
  • the first driving electrode 52a is electrically connected to the cathode electrode layer 4 at the edge of the display panel 100.
  • the encapsulation layer B also has a plurality of second conductive through holes (not marked in the figure) arranged at intervals from the accommodating cavity 53a, and the plurality of second driving electrodes 52b of the multiple phase change units 50 are each respectively connected through the encapsulation
  • the second conductive via of layer B is electrically connected to the driving circuit layer 10 .
  • FIG. 9 is a schematic diagram of the structure of a driving circuit provided in an embodiment of the present application.
  • the present application also provides a driving circuit 200 for driving the display panel 100 involved in the above embodiment.
  • the driving circuit 200 includes a judgment module 300 and a driving module 400.
  • the judgment module 300 is used to judge the state of the display panel 100; the driving module 400 is used to drive the phase change unit 50 of the display panel 100 according to the judgment result of the judgment module 300.
  • the driving module 400 drives the phase change material 51 to be in a first state through the driving element 52; in response to the display panel 100 being in a display state, the driving module 400 drives the phase change material 51 to be in a second state through the driving element 52.
  • the display panel 100 when the display panel 100 is in the non-display state, the ambient light reaching the phase change material 51 via the organic light-emitting layer 3 will be absorbed by the phase change material 51, so that the display panel 100 has a better black state when not displaying; further, the display panel 100 is generally in the non-display state for a longer time, and there is no need to apply voltage to the cholesteric liquid crystal in the non-display state, which can save energy and electricity.
  • the ambient light reaching the phase change material 51 via the organic light-emitting layer 3 will be reflected by the phase change material 51, and the reflected light will pass through the organic light-emitting layer 3, enhancing the light of the organic light-emitting layer 3, thereby improving the luminous efficiency and contrast of the display panel 100.
  • FIG. 10 is a schematic diagram of the structure of a display device provided in an embodiment of the present application.
  • the present application also provides a display device 500, including a display panel 100 and a driving circuit 200.
  • the specific structure and function of the display panel 100 and the driving circuit 200 can be referred to the relevant description of the display panel 100 and the driving circuit 200 provided in the above embodiment, which will not be repeated here.
  • the display device 500 can specifically be a self-luminous product, such as a laptop computer, mobile phone, TV, etc. made of OLED and Mini-LED.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Electroluminescent Light Sources (AREA)

Abstract

一种驱动电路(200)、显示面板(100)以及显示装置(500)。显示面板(100)包括驱动基板(1)，包括驱动电路层(10)；阳极电极层(2)设置于驱动电路层(10)的一侧且与驱动电路层(10)电连接；有机发光层(3)设置于阳极电极层(2)远离驱动电路层(10)的一侧，包括多个发光单元(30)；阴极电极层(4)设置于有机发光层(3)远离驱动电路层(200)的一侧且与驱动电路层(200)电连接；设置于阳极电极层(2)和驱动电路层(10)之间的相变结构层(5)包括与多个发光单元(30)对应设置的多个相变单元(50)，相变单元(50)包括相变材料(51)具有第一状态和第二状态；驱动元件(52)与驱动电路层(10)电连接，用于驱动相变材料(51)处于第一状态或第二状态；第一吸光层(6)设置于相变材料(51)靠近驱动电路层(10)的一侧。显示面板(100)能够有效地降低自身厚度、降低功耗，提高显示面板(100)的发光效率以及对比度。

Description

像素驱动电路、驱动方法及显示装置
相关申请的交叉引用
本申请要求2023年06月12日提交的中国专利申请2023106896341的优先权，其全部内容通过引用并入本文。
技术领域
本申请涉及显示技术领域，尤其涉及一种驱动电路、显示面板以及显示装置。
背景技术
OLED(Organic Light-Emitting Diode，有机发光二极管)器件具有自发光结构，同时拥有对比度高，视角宽，响应速度快，轻薄可折叠的优点，是目前显示领域的主要研究方向之一。
由于OLED是靠自身自发光，故而希望环境光可以尽可能被OLED吸收掉，避免其反射出去对正常颜色产生混色和干扰，因此OLED显示装置一般需要采用圆偏振片，圆偏振片是由一个偏振片和一个1/4波片合起来的总成，可以将环境光吸收。但是由于圆偏振片的厚度较大，故显示面板厚度无法减少，因此需要选择一种新的技术来代替圆偏振片的作用。
发明内容
本申请提供一种驱动电路、显示面板以及显示装置，主要解决显示面板厚度无法减少的问题。
为解决上述技术问题，本申请采用的一个技术方案是提供一种显示面板，包括驱动基板，包括驱动电路层；
阳极电极层，设置于所述驱动电路层的一侧且与所述驱动电路层电连接；
有机发光层，设置于所述阳极电极层远离所述驱动电路层的一侧，包括多个发光单元；
阴极电极层，设置于所述有机发光层远离所述驱动电路层的一侧且与所述驱动电路层电连接；
还包括相变结构层，设置于所述阳极电极层和所述驱动电路层之间；所述相变结构层包括与多个所述发光单元对应设置的多个相变单元，所述相变单元包括：
相变材料，具有第一状态和第二状态；
驱动元件，与所述驱动电路层电连接，用于驱动所述相变材料处于所述第一状态或所述第二状态；
第一吸光层，设置于所述相变材料靠近所述驱动电路层的一侧；
其中，所述相变材料在第一状态下能够透光，使得所述第一吸光层吸收来自外界的环境光；所述相变材料在第二状态下能够反射与对应的发光单元的发射光相同颜色的光。
其中，所述相变材料为胆甾液晶；所述驱动元件包括第一驱动电极和第二驱动电极；所述第一驱动电极和所述第二驱动电极分别设置于所述胆甾液晶的相对两侧，用于向所述胆甾液晶施加驱动电压。
其中，所述胆甾液晶被配置为能够在所述驱动电压下从第一状态转变为第二状态，且在所述驱动电压消失后能够从所述第二状态恢复至所述第一状态。
其中，所述相变单元还包括封装腔体，所述封装腔体具有容纳腔；所述相变材料设置于所述容纳腔内；所述第一驱动电极设置于所述封装腔体靠近所述驱动电路层的一侧，所述第二驱动电极设置于所述封装腔体靠近所述阳极电极层的一侧。
其中，多个所述相变单元的多个所述封装腔体相互连接形成封装层，所述封装层具有与所述容纳腔间隔设置的多个第一导电通孔，所述阳极电极层通过所述第一导电通孔与所述驱动电路层电连接。
其中，多个所述相变单元的多个所述第二驱动电极相互连接，且与所述阴极电极层电连接；多个所述相变单元的多个所述第一驱动电极分 别各自与所述驱动电路层电连接；或
多个所述相变单元的多个所述第一驱动电极相互连接，且与所述阴极电极层电连接；多个所述相变单元的多个所述第二驱动电极分别各自通过所述封装层的第二导电通孔与所述驱动电路层电连接。
其中，所述显示面板还包括设置于所述相变结构层背离所述驱动电路层的第二吸光层；所述第二吸光层包括多个吸光单元，所述吸光单元对应相邻两个所述相变单元之间的位置设置。
其中，所述阳极电极层为透明电极层。
为解决上述技术问题，本申请采用的另一个技术方案是提供一种驱动电路，用于驱动上述所涉及的任一所述显示面板，包括：
判断模块，用于判断所述显示面板的状态；
驱动模块，用于根据所述判断模块的判断结果驱动所述相变单元；
其中，响应于所述显示面板为非显示状态，所述驱动模块通过所述驱动元件驱动所述相变材料处于所述第一状态；响应于所述显示面板为显示状态，所述驱动模块通过所述驱动元件驱动所述相变材料处于所述第二状态。
为解决上述技术问题，本申请采用的又一个技术方案是提供一种显示装置，包括：
显示面板，包括上述所涉及的任一所述的显示面板；
驱动电路，包括上述所涉及的所述驱动电路。
本申请提供一种驱动电路、显示面板以及显示装置，显示面板包括驱动基板、阳极电极层、有机发光层、阴极电极层以及相变结构层。其中，驱动基板包括驱动电路层；阳极电极层设置于驱动电路层的一侧且与驱动电路层电连接；有机发光层设置于阳极电极层远离驱动电路层的一侧，还包括多个发光单元；阴极电极层设置于有机发光层远离驱动电路层的一侧且与驱动电路层电连接；相变结构层设置于阳极电极层和驱动电路层之间；相变结构层包括与多个发光单元对应设置的多个相变单元，相变单元包括具有第一状态和第二状态的相变材料、设置于相变材料靠近驱动电路层的一侧的第一吸光层以及与驱动电路层电连接的驱 动元件；驱动元件用于驱动相变材料处于第一状态或第二状态。该显示面板通过设置包括相变材料和驱动元件的相变结构层，使得相变材料在第一状态下透光，使得第一吸光层吸收来自外界的环境光，在第二状态下能够反射与对应的发光单元的发射光相同颜色的光；如此设置既减少了环境光对显示面板的影响，又对有机发光层发出的光进行增强，提高了显示面板的发光效率和对比度；同时，相对于现有技术显示面板通过偏振片吸收外界的环境光，该显示面板采用厚度较小的相变结构层而省去了厚度较大的偏振片，进而能够有效地降低自身的厚度。
附图说明
为了更清楚地说明本申请实施例中的技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图是本申请的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为本申请一实施例提供的显示面板的结构示意图；
图2为本申请提供的显示面板在第一状态下吸收环境光的示意简图；
图3为本申请提供的显示面板在第二状态下反射环境光的示意简图；
图4为本申请一实施例提供的相变结构层的具体结构示意图；
图5为本申请另一实施例提供的相变结构层的具体结构示意图；
图6为本申请另一实施例提供的显示面板的结构示意图；
图7为本申请一实施例提供的电极连接示意图；
图8为本申请另一实施例提供的电极连接示意图；
图9为本申请一实施例提供的驱动电路的结构示意图；
图10为本申请一实施例提供的显示装置的结构示意图。
附图标号说明：
1-驱动基板；10-驱动电路层；11-衬底；2-阳极电极层；3-有机发光
层；30-发光单元；4-阴极电极层；5-相变结构层；50-相变单元；51-相 变材料；52-驱动元件；52a-第一驱动电极；52b-第二驱动电极；53-封装腔体；53a-容纳腔；6-第一吸光层；7-第二吸光层；70-吸光单元；100-显示面板；200-驱动电路；300-判断模块；400-驱动模块；500-显示装置；A-第一导电通孔；B-封装层。
具体实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅是本申请的一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
以下描述中，为了说明而不是为了限定，提出了诸如特定系统结构、接口、技术之类的具体细节，以便透彻理解本申请。
本申请中的术语“第一”、“第二”、“第三”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”、“第三”的特征可以明示或者隐含地包括至少一个该特征。本申请的描述中，“多个”的含义是至少两个，例如两个，三个等，除非另有明确具体的限定。本申请实施例中所有方向性指示(诸如上、下、左、右、前、后……)仅用于解释在某一特定姿态(如附图所示)下各部件之间的相对位置关系、运动情况等，如果该特定姿态发生改变时，则该方向性指示也相应地随之改变。此外，术语“包括”和“具有”以及它们任何变形，意图在于覆盖不排他的包含。例如包含了一系列步骤或单元的过程、方法、系统、产品或设备没有限定于已列出的步骤或单元，而是可选地还包括没有列出的步骤或单元，或可选地还包括对于这些过程、方法、产品或设备固有的其它步骤或单元。
在本文中提及“实施例”意味着，结合实施例描述的特定特征、结构或特性可以包含在本申请的至少一个实施例中。在说明书中的各个位置出现该短语并不一定均是指相同的实施例，也不是与其它实施例互斥 的独立的或备选的实施例。本领域技术人员显式地和隐式地理解的是，本文所描述的实施例可以与其它实施例相结合。
现有技术中OLED(Organic Light-Emitting Diode，有机发光二极管)显示装置是一种自发光结构。当OLED自发光时，外界自然光也会照射到OLED显示面板上，当穿透过封装层之后就会从金属阴极反射回来，因此从阴极出来的反射光会造成很大的成像干扰，降低显示对比度，造成用户在阅读时的干扰，暗态不暗，因此OLED显示装置需要采用圆偏振片来解决这一问题。圆偏振片是由一个线偏振片和一个1/4波片合起来的总成，外界自然光经过线偏光膜、1/4相位延迟片，依次变成线偏振光、圆偏振光；经过OLED金属阴极反射后，变成旋向相反的圆偏振光；再经过1/4相位延迟膜，变成振动方向与线偏光膜偏振方向垂直的线偏振光；线偏振光不能透过，从而抑制了外界环境光的反射干扰。
但是由于圆偏振片的厚度较大(通常在100um左右)，故显示面板的厚度无法减少。
本申请提供一种驱动电路、显示面板以及显示装置。该显示面板通过设置包括相变材料、驱动元件以及第一吸光层的相变结构层，相变材料在第一状态下能够透光，使得第一吸光层吸收来自外界的环境光，减少了环境光对显示面板的影响；在第二状态下能够反射与对应的发光单元的发射光相同颜色的光；如此设置既减少了环境光对显示面板的影响，又对有机发光层发出的光进行增强，提高了显示面板的发光效率和对比度；同时，相对于现有技术显示面板通过偏振片吸收外界的环境光，该显示面板采用厚度较小的相变结构层而省去了厚度较大的偏振片，进而能够有效地降低显示面板以及显示装置的厚度。
下面结合附图和实施例对本申请进行详细的说明。
请参阅图1，图1为本申请一实施例提供的显示面板的结构示意图。在本实施例中，本申请提供一种显示面板100，该显示面板100包括驱动基板1、阳极电极层2、有机发光层3、阴极电极层4以及相变结构层5。
其中，驱动基板1包括驱动电路层10。阳极电极层2设置于驱动电 路层10的一侧，且与驱动电路层10电连接。在有机发光层3和相变结构层5之间设置阳极电极层2，且阳极电极层2通过第一导电通孔A和驱动电路层10电连接。驱动基板1还包括设置驱动电路层10的衬底11，例如PI柔性衬底。驱动电路层10包括薄膜晶体管(TFT)以及数据线、电源线等。
具体的，阳极电极层2为透明电极层或半透明电极层，使光至少部分可以透过阳极电极层2。优选地，在具体的实施例中，阳极电极层2为ITO(Indium Tin Oxide)层或者其他透明导电材料层。且由于本申请的阳极电极层2可以采用透明导电材料层，而不需要再具备反射功能，因此可以不用含有Ag的导电材料，可有效降低制备的成本。
有机发光层3设置于阳极电极层2远离驱动电路层10的一侧，有机发光层3还包括多个发光单元30。在具体的实施例中，多个发光单元30包括红色发光单元、绿色发光单元以及蓝色发光单元。本实施例中，有机发光层3包括依次层叠设置的空穴注入层(HIL)、空穴传输层(H TL)、发光材料层(EML)、电子传输层(ETL)、电子注入层(EIL)。
阴极电极层4设置于有机发光层3远离驱动电路层10的一侧且与驱动电路层10电连接。具体的，阴极电极层4通过显示面板100的边缘和驱动电路层10进行电连接。阴极电极层4可以为一整层，也可以对应多个发光单元30分别设置。
继续参阅图1，相变结构层5设置于阳极电极层2和驱动电路层10之间；相变结构层5包括与多个发光单元30对应设置的多个相变单元50。相变单元50包括具有第一状态和第二状态的相变材料51、与驱动电路层10电连接的驱动元件52以及设置于相变材料51靠近驱动电路层10一侧的第一吸光层6。在具体实施过程中，驱动元件52用于驱动相变材料51处于第一状态或第二状态。相变材料51的具体材料不限，只要能够在第一状态和第二状态之间切换即可，例如可以为液晶。驱动元件52的结构不限，只要能够驱动相变材料51在第一状态和第二状态之间切换即可。驱动元件52驱动相变材料51在第一状态和第二状态之间切换的方式可以为电场、磁场、加热、光照等。在具体的实施例中， 第一吸光层6为黑色材料吸光层。
参阅图1、图2和图3，图2为本申请提供的显示面板在第一状态下吸收环境光的示意简图。图3为本申请提供的显示面板在第二状态下反射环境光的示意简图。其中，相变材料51在第一状态下能够透光，使得第一吸光层6吸收来自外界的环境光，以用于减少外界环境光对显示面板100产生的影响；相变材料51在第二状态下能够反射与对应的发光单元30的发射光相同颜色的光(包括来自外界的环境光和发光单元30向相变材料51一侧发射的光)，以对有机发光层3的多个发光单元30发出的光进一步增强，提高了显示面板100的发光效率和对比度。例如，相变单元50对应的是可以发出红光的发光单元30，那么相变材料51在第二状态下就可以反射出红色的光；相变单元50对应的是可以发出绿光的发光单元30，那么相变材料51在第二状态下就可以反射出绿色的光。具体的，多个相变单元50包括用于反射红光的相变单元50，用于反射绿光的相变单元50以及用于反射蓝光的相变单元50，分别对应于红色发光单元、绿色发光单元以及蓝色发光单元。
请参阅图4，图4为本申请一实施例提供的相变结构层的具体结构示意图。本实施例中相变材料51为胆甾液晶。驱动元件52包括第一驱动电极52a和第二驱动电极52b；第一驱动电极52a和第二驱动电极52b分别设置于胆甾液晶的相对两侧，用于向胆甾液晶施加驱动电压。第一驱动电极52a设置于相变材料51靠近驱动电路层10的一侧，第二驱动电极52b设置于相变材料51靠近阳极电极层2的一侧，即，第一驱动电极52a和第二驱动电极52b分别设置于相变材料51的垂直于相变结构层5的两侧。在具体实施例中，胆甾液晶的材质可以为热致变色材料，也可以为液晶材料。可以理解，在其它实施例中，根据相变材料51采用的液晶材料的不同，也可以将第一驱动电极52a和第二驱动电极52b分别设置于相变材料51的平行于相变结构层5的两侧。如图5，图5为本申请另一实施例提供的相变结构层的具体结构示意图。本实施例中将第一驱动电极52a和第二驱动电极52b间隔设置于相变材料51远离驱动电路层10的同一侧，且避开相变材料51对应的位置设置。这样发出不 同光的胆甾液晶可以共用同一个第一驱动电极52a或者共用同一个第二驱动电极52b，如此设置使得相变结构层5的结构更加简单，除此以外，如此设置的驱动元件52也不用使用透明材料，依然可以避免遮挡住发光单元30发出的光。
继续参阅图4，胆甾液晶被配置为能够在驱动电压下从第一状态转变为第二状态，且在驱动电压消失后能够从第二状态恢复至第一状态。可以理解为，在显示面板100不显色的时候，胆甾液晶两侧的第一驱动电极52a和第二驱动电极52b不提供电压，此时胆甾液晶在第一状态，经由有机发光层3到达胆甾液晶的环境光会透过胆甾液晶，进一步环境光被第一吸光层6吸收，减少外界环境光对显示面板100产生的影响，同时使得显示面板100在不显示的时候具有更好的黑态；进一步，显示面板100一般处于非显示状态的时间更长，在非显示状态的时候也不用向胆甾液晶施加电压，可以节能省电。当显示面板100使用过程中需要显色时，胆甾液晶两侧的第一驱动电极52a和第二驱动电极52b提供电压，此时胆甾液晶在第二状态，经由有机发光层3到达胆甾液晶的环境光或有机发光层3向相变材料51一侧发射的光会被胆甾液晶反射，反射光会穿过有机发光层3，对有机发光层3的光进行一个增强作用，提高显示面板100的发光效率和对比度。
请进一步参阅图4，本实施例的相变单元50还包括封装腔体53。封装腔体53具有容纳腔53a；胆甾液晶设置于容纳腔53a内。具体的，封装腔体53为微杯，微杯的高度为20um-50um；其中，容纳腔53a的面积大于等于阳极像素(图未示)开口面积，有利于保证像素开口，使像素开口不受影响。
进一步参阅图1和图4，其中，第一驱动电极52a设置于封装腔体53靠近驱动电路层10的一侧的表面，第二驱动电极52b设置于封装腔体53靠近阳极电极层2的一侧的表面，第二驱动电极52b与阳极电极层2之间具有绝缘层(图未示)，以保证第二驱动电极52b和阳极电极层2之间绝缘。多个相变单元50的多个封装腔体53相互连接形成封装层B，封装层B具有与容纳腔53a间隔设置的多个第一导电通孔A，上 述涉及到的阳极电极层2即通过第一导电通孔A与驱动电路层10进行电连接，以实现电信号传输。可以理解的是，在具体的实施例中，具体第一导电通孔A位置和第一导电通孔A个数会根据显示面板100的设计进行符合实际的设计，在此没有限制，只要保证电连接即可。
参阅图6，图6为本申请另一实施例提供的显示面板的结构示意图。本实施例提供的显示面板100和图1中提供的显示面板100的结构基本相同，不同之处在于本实施例的显示面板100还包括设置于相变结构层5背离驱动电路层10的第二吸光层7。其中，第二吸光层7包括多个吸光单元70，吸光单元70对应相邻两个相变单元50之间的位置设置，用于吸收相变单元50处反射出的不同颜色光，避免相变单元50之间产生混色现象。具体地，第二吸光层7可以位于第二驱动电极52b所在的电极层与阳极电极层2之间，还可以与第二驱动电极52b同层设置。
请参阅图6和图7，图7为本申请一实施例提供的电极连接示意图。多个相变单元50的多个第二驱动电极52b相互连接。具体的，多个第二驱动电极52b可以呈网状进行连接，也可以是连续的一整层结构，只要多个第二驱动电极52b可以互相进行连接即可，本申请对此并不做限制。在本实施例中，主要以多个第二驱动电极52b为连续的一整层为例进行说明；多个第二驱动电极52b对应第一导电通孔A具有开口，以避免第二驱动电极52b与阳极电极层2短路。第二驱动电极52b与阴极电极层4在显示面板100的边缘进行电连接。多个相变单元50的多个第一驱动电极52a分别各自与驱动电路层10中的驱动电路单元电连接。
请参阅图6和图8，图8为本申请另一实施例提供的电极连接示意图。多个相变单元50的多个第一驱动电极52a相互连接。具体的，多个第一驱动电极52a可以呈网状进行连接，也可以是连续的一整层结构，只要多个第一驱动电极52a可以互相进行连接即可，本申请对此并不做限制。在本实施例中，主要以第一驱动电极52a为连续的一整层为例。第一驱动电极52a与阴极电极层4在显示面板100的边缘进行电连接。其中，封装层B还具有与容纳腔53a间隔设置的多个第二导电通孔(图未标)，多个相变单元50的多个第二驱动电极52b分别各自通过封装 层B的第二导电通孔与驱动电路层10电连接。
参阅图9，图9为本申请一实施例提供的驱动电路的结构示意图。本申请还提供一种驱动电路200，用于驱动上述实施例中涉及的显示面板100。驱动电路200包括判断模块300和驱动模块400。结合图9和图6，判断模块300用于判断显示面板100的状态；驱动模块400用于根据判断模块300的判断结果驱动显示面板100的相变单元50。其中，响应于显示面板100为非显示状态，驱动模块400通过驱动元件52驱动相变材料51处于第一状态；响应于显示面板100为显示状态，驱动模块400通过驱动元件52驱动相变材料51处于第二状态。即显示面板100非显示状态下，经由有机发光层3到达相变材料51的环境光会被相变材料51吸收，使得显示面板100在不显示的时候具有更好的黑态；进一步，显示面板100一般处于非显示状态的时间更长，在非显示状态的时候也不用向胆甾液晶施加电压，可以节能省电。在显示面板100为显示状态下，经由有机发光层3到达相变材料51的环境光会被相变材料51反射，反射光会穿过有机发光层3，对有机发光层3的光进行一个增强作用，提高显示面板100的发光效率和对比度。
参阅图10，图10为本申请一实施例提供的显示装置的结构示意图。本申请还提供一种显示装置500，包括显示面板100和驱动电路200。显示面板100和驱动电路200的具体结构与功能可参见上述实施例提供的对显示面板100和驱动电路200的相关描述，在此不再赘述。显示装置500具体可以为自发光产品，如OLED及Mini-LED制作的笔记本电脑、手机、电视等。
对于本领域技术人员而言，显然本申请不限于上述示范性实施例的细节，而且在不背离本申请的精神或基本特征的情况下，能够以其他的具体形式实现本申请。因此，无论从哪一点来看，均应将实施例看作是示范性的，而且是非限制性的，本申请的范围由所附权利要求而不是上述说明限定，因此旨在将落在权利要求的得同要件的含义和范围内的所有变化囊括在本申请内。不应将权利要求中的任何附图标记视为限制所涉及的权利要求。
以上所述仅为本申请的实施方式，并非因此限制本申请的专利范围，凡是利用本申请说明书及附图内容所作的等效结构或等效流程变换，或直接或间接运用在其他相关的技术领域，均同理包括在本申请的专利保护范围内。

Claims (16)

  1. 一种显示面板，包括：
    驱动基板，包括驱动电路层；
    阳极电极层，设置于所述驱动电路层的一侧且与所述驱动电路层电连接；
    有机发光层，设置于所述阳极电极层远离所述驱动电路层的一侧，包括多个发光单元；
    阴极电极层，设置于所述有机发光层远离所述驱动电路层的一侧且与所述驱动电路层电连接；
    其特征在于，还包括相变结构层，设置于所述阳极电极层和所述驱动电路层之间；所述相变结构层包括与多个所述发光单元对应设置的多个相变单元，所述相变单元包括：
    相变材料，具有第一状态和第二状态；
    驱动元件，与所述驱动电路层电连接，用于驱动所述相变材料处于所述第一状态或所述第二状态；
    第一吸光层，设置于所述相变材料靠近所述驱动电路层的一侧；
    其中，所述相变材料在第一状态下能够透光，使得所述第一吸光层吸收来自外界的环境光；所述相变材料在第二状态下能够反射与对应的发光单元的发射光相同颜色的光。
  2. 根据权利要求1所述的显示面板，其特征在于，所述相变材料为胆甾液晶。
  3. 根据权利要求2所述的显示面板，其特征在于，所述驱动元件包括第一驱动电极和第二驱动电极。
  4. 根据权利要求3所述的显示面板，其特征在于，所述第一驱动电极和所述第二驱动电极分别设置于所述胆甾液晶的相对两侧，用于向所述胆甾液晶施加驱动电压。
  5. 根据权利要求4所述的显示面板，其特征在于，所述胆甾液晶被配置为能够在所述驱动电压下从第一状态转变为第二状态，且在所述驱动电压消失后能够从所述第二状态恢复至所述第一状态。
  6. 根据权利要求4所述的显示面板，其特征在于，所述相变单元还包括封 装腔体。
  7. 根据权利要求6所述的显示面板，其特征在于，所述封装腔体具有容纳腔；所述相变材料设置于所述容纳腔内。
  8. 根据权利要求7所述的显示面板，其特征在于，所述第一驱动电极设置于所述封装腔体靠近所述驱动电路层的一侧，所述第二驱动电极设置于所述封装腔体靠近所述阳极电极层的一侧。
  9. 根据权利要求8所述的显示面板，其特征在于，多个所述相变单元的多个所述封装腔体相互连接形成封装层，所述封装层具有与所述容纳腔间隔设置的多个第一导电通孔。
  10. 根据权利要求9所述的显示面板，其特征在于，所述阳极电极层通过所述第一导电通孔与所述驱动电路层电连接。
  11. 根据权利要求10所述的显示面板，其特征在于，多个所述相变单元的多个所述第二驱动电极相互连接，且与所述阴极电极层电连接；多个所述相变单元的多个所述第一驱动电极分别各自与所述驱动电路层电连接；或
    多个所述相变单元的多个所述第一驱动电极相互连接，且与所述阴极电极层电连接；多个所述相变单元的多个所述第二驱动电极分别各自通过所述封装层的第二导电通孔与所述驱动电路层电连接。
  12. 根据权利要求10所述的显示面板，其特征在于，所述显示面板还包括设置于所述相变结构层背离所述驱动电路层的第二吸光层。
  13. 根据权利要求12所述的显示面板，其特征在于，所述第二吸光层包括多个吸光单元，所述吸光单元对应相邻两个所述相变单元之间的位置设置。
  14. 根据权利要求1所述的显示面板，其特征在于，所述阳极电极层为透明电极层。
  15. 一种驱动电路，用于驱动权利要求1所述的显示面板，包括：
    判断模块，用于判断所述显示面板的状态；
    驱动模块，用于根据所述判断模块的判断结果驱动所述相变单元；
    其中，响应于所述显示面板为非显示状态，所述驱动模块通过所述驱动元件驱动所述相变材料处于所述第一状态；响应于所述显示面板为显示状态，所述驱动模块通过所述驱动元件驱动所述相变材料处于所述第二状态。
  16. 一种显示装置，其特征在于，包括：
    显示面板，包括权利要求1所述的显示面板；
    驱动电路，包括权利要求15所述的驱动电路。
PCT/CN2023/127337 2023-06-12 2023-10-27 像素驱动电路、驱动方法及显示装置 Ceased WO2024255064A1 (zh)

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