Transparent display panel, display device and working method thereof

Abstract

The invention provides a transparent display panel, a display device and a working method of the display device, and belongs to the technical field of display. The transparent display panel comprises a first substrate and a second substrate which are oppositely arranged, and a cavity is formed between the first substrate and the second substrate; the multiple sub-pixels are arranged on the side, away from the second substrate, of the first substrate, and the multiple sub-pixels comprise display sub-pixels and transparent sub-pixels; the first electrode and the second electrode are arranged on the side, facing the first substrate, of the second substrate, the orthographic projection of the first electrode on the first substrate at least partially coincides with the orthographic projection of the display sub-pixel on the first substrate, and the orthographic projection of the second electrode on the first substrate at least partially coincides with the orthographic projection of the transparent sub-pixel on the first substrate; the second electrode is a light-transmitting electrode; the electrophoresis layer is located in the cavity, the charged shading particles are located in the electrophoresis layer, and the charged shading particles can move under the action of an electric field of the first electrode and / or the second electrode. According to the technical scheme, the picture contrast can be improved.

Description

Technical Field

[0001] The present invention relates to the field of display technology, and in particular to a transparent display panel, a display device and a working method thereof. Background Art

[0002] OLED (Organic Light-Emitting Diode) display devices have been listed as the next generation display technology with great development prospects due to their advantages such as thinness, lightness, wide viewing angle, active light emission, continuously adjustable light color, low cost, fast response speed, low energy consumption, low driving voltage, wide operating temperature range, simple production process, high light emission efficiency and flexible display. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a transparent display panel, a display device and a working method thereof, which can improve the picture contrast of the transparent display panel.

[0004] To solve the above technical problems, the embodiments of the present invention provide the following technical solutions:

[0005] In one aspect, a transparent display panel is provided, comprising:

[0006] A first substrate and a second substrate are arranged opposite to each other, and a cavity is formed between the first substrate and the second substrate;

[0007] A plurality of sub-pixels are arranged on a side of the first substrate away from the second substrate, the plurality of sub-pixels including display sub-pixels and transparent sub-pixels;

[0008] a first electrode and a second electrode disposed on a side of the second substrate facing the first substrate, wherein an orthographic projection of the first electrode on the first substrate at least partially overlaps with an orthographic projection of the display sub-pixel on the first substrate, and an orthographic projection of the second electrode on the first substrate at least partially overlaps with an orthographic projection of the transparent sub-pixel on the first substrate, and the second electrode is a light-transmitting electrode;

[0009] The electrophoretic layer in the cavity and the charged light-shielding particles in the electrophoretic layer can move under the action of the electric field of the first electrode and / or the second electrode.

[0010] In some embodiments, the display sub-pixel includes:

[0011] A light emitting element and a driving circuit for driving the light emitting element to emit light. The light emitting element comprises a reflective anode, a transparent cathode and an organic light emitting layer located between the reflective anode and the transparent cathode.

[0012] In some embodiments, the thickness of the reflective anode is 50nm-500nm;

[0013] The thickness of the light-transmitting cathode is 10nm-200nm.

[0014] In some embodiments, the transparent display panel further includes:

[0015] A light shielding layer is located on the first substrate, and an orthographic projection of the thin film transistor of the driving circuit on the first substrate is located within the orthographic projection of the light shielding layer on the first substrate.

[0016] In some embodiments, the diameter of the charged light-shielding particles is less than or equal to 100 microns.

[0017] In some embodiments, the first electrode is an opaque electrode, and the orthographic projection of the thin film transistor of the driving circuit on the first substrate is located within the orthographic projection of the first electrode on the first substrate.

[0018] In some embodiments, the transparent display panel further includes:

[0019] A common electrode is located on a side of the first substrate facing the second substrate, and the common electrode is a light-transmitting electrode.

[0020] In some embodiments, the transparent display panel includes a display sub-pixel column composed of a plurality of the display sub-pixels and a transparent sub-pixel column composed of a plurality of the transparent sub-pixels, and the display sub-pixel columns and the transparent sub-pixel columns are alternately arranged.

[0021] An embodiment of the present invention further provides a display device, comprising the transparent display panel as described above.

[0022] An embodiment of the present invention further provides a working method of a display device, which is applied to the display device as described above, and the working method includes:

[0023] In the first working mode, an electric signal with a polarity opposite to that of the charged light-shielding particles is applied to the first electrode, and an electric signal with a polarity identical to that of the charged light-shielding particles is applied to the second electrode, so that the charged light-shielding particles are gathered under the display sub-pixel;

[0024] In the second working mode, an electric signal with the same polarity as the charged light-shielding particles is applied to the first electrode, and an electric signal with the opposite polarity to the charged light-shielding particles is applied to the second electrode, so that the charged light-shielding particles are gathered under the transparent sub-pixel.

[0025] The embodiments of the present invention have the following beneficial effects:

[0026] In the above scheme, under the action of the electric field of the first electrode and / or the second electrode, the charged shading particles can move. In this way, in different working modes, the charged shading particles can be controlled to gather in the display sub-pixels or transparent sub-pixels by controlling the electric signals applied to the first electrode and the second electrode. Therefore, the overall or local transparency of the transparent display panel can be changed, thereby improving the picture contrast of the transparent display panel and achieving the purpose of multi-scenario application. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a schematic plan view of a transparent display panel according to an embodiment of the present invention;

[0028] Figure 2 is a cross-sectional schematic diagram of a transparent display panel according to an embodiment of the present invention;

[0029] Figure 3 is a cross-sectional schematic diagram of a transparent display panel according to another embodiment of the present invention;

[0030] Figure 4 is a cross-sectional schematic diagram of a driving circuit according to an embodiment of the present invention;

[0031] Figure 5 A schematic diagram of charged light-shielding particles gathered in a display sub-pixel according to an embodiment of the present invention;

[0032] Figure 6 It is a schematic diagram of charged light-shielding particles gathered in a transparent sub-pixel according to an embodiment of the present invention.

[0033] Reference numerals

[0034] 100 Display sub-pixels

[0035] 200 transparent sub-pixels

[0036] 1. First substrate

[0037] 2 Planarization layer

[0038] 3 Shading layer

[0039] 4 pixel definition layers

[0040] 5 Reflective anode

[0041] 6 Organic light-emitting layer

[0042] 7 Light-transmitting cathode

[0043] 8 Electrophoresis layer

[0044] 9 Charged light-shielding particles

[0045] 10. First electrode

[0046] 11. Second electrode

[0047] 12. Second substrate

[0048] 13 Support layer

[0049] 22 Buffer layer

[0050] 23. Gate insulation layer

[0051] 24 Interlayer insulation layer

[0052] 25 Passivation layer

[0053] 26 Flat Layer

[0054] 28 Gate

[0055] 29 Active layer

[0056] 31 Drain

[0057] 32 Source

[0058] 33 Common electrode DETAILED DESCRIPTION

[0059] In order to make the technical problems, technical solutions and advantages to be solved by the embodiments of the present invention more clear, a detailed description will be given below with reference to the accompanying drawings and specific embodiments.

[0060] With the development of display technology, transparent display technology has attracted more and more attention, and transparent display panels are being used in more and more scenarios, such as billboards in shopping malls to display product information, front windshields of cars to display real-time road navigation, transparent refrigerators to display nutrition menus, and vending machines. When transparent display panels are used in certain scenarios, due to their high transmittance, more light from behind passes through the transparent display panel, affecting the contrast of the picture display, making it difficult to see the display content of the transparent display panel.

[0061] Embodiments of the present invention provide a transparent display panel, a display device and a working method thereof, which can improve the image contrast of the transparent display panel.

[0062] An embodiment of the present invention provides a transparent display panel, such as Figure 1 As shown, it includes a plurality of display sub-pixels 100 and a plurality of transparent sub-pixels 200. Figure 2 and Figure 3 As shown, the transparent display panel includes:

[0063] A first substrate 1 and a second substrate 12 are arranged opposite to each other, and a support layer 13 is arranged between the first substrate 1 and the second substrate 12. The support layer 13 can make the first substrate 1 and the second substrate 12 spaced a certain distance apart, so as to form a cavity between the first substrate 1 and the second substrate 12;

[0064] A plurality of sub-pixels are arranged on a side of the first substrate 1 away from the second substrate 12, wherein the plurality of sub-pixels include display sub-pixels 100 and transparent sub-pixels 200;

[0065] A first electrode 10 and a second electrode 11 are arranged on the side of the second substrate 12 facing the first substrate 1, wherein the orthographic projection of the first electrode 10 on the first substrate 1 at least partially overlaps with the orthographic projection of the display sub-pixel 100 on the first substrate 1, and the orthographic projection of the second electrode 11 on the first substrate 1 at least partially overlaps with the orthographic projection of the transparent sub-pixel 200 on the first substrate 1, wherein the second electrode 11 needs to be a light-transmitting electrode, so that the second electrode 11 does not affect the transmission of light from the transparent sub-pixel 200;

[0066] The electrophoretic layer 8 in the cavity and the charged light-shielding particles 9 in the electrophoretic layer 8 can move under the action of the electric field of the first electrode 10 and / or the second electrode 11 .

[0067] In this embodiment, under the action of the electric field of the first electrode and / or the second electrode, the charged shading particles can move. In this way, in different working modes, the charged shading particles can be controlled to gather in the display sub-pixels or transparent sub-pixels by controlling the electric signals applied to the first electrode and the second electrode. Therefore, the overall or local transparency of the transparent display panel can be changed, thereby improving the picture contrast of the transparent display panel and achieving the purpose of multi-scenario application.

[0068] In this embodiment, Figure 1 As shown, a plurality of the display sub-pixels 100 can be arranged into display sub-pixel columns, and a plurality of the transparent sub-pixels 200 can be arranged into transparent sub-pixel columns. The display sub-pixel columns and the transparent sub-pixel columns are arranged alternately, and the area ratio of the transparent sub-pixels to the display sub-pixels can be adjusted as needed, and the area ratio of the transparent sub-pixels to the display sub-pixels can be 1:0.8-1.2. In this embodiment, the display sub-pixels can be color sub-pixels or can be a white sub-pixel + color filter structure.

[0069] In this embodiment, the orthographic projection of the first electrode 10 on the first substrate 1 can be located within the orthographic projection of the display sub-pixel 100 on the first substrate 1 , and the orthographic projection of the second electrode 11 on the first substrate 1 can be located within the orthographic projection of the transparent sub-pixel 200 on the first substrate 1 .

[0070] In this embodiment, the first substrate 1 can be made of glass, or transparent materials such as PET, PI, etc., and the second substrate 12 can be made of glass, or transparent materials such as PET, PI, etc. A planarization layer 2 is provided on the first substrate, and the display sub-pixel 100 is formed on the planarization layer 2.

[0071] In some embodiments, the display sub-pixel 100 includes:

[0072] A light emitting element and a driving circuit for driving the light emitting element to emit light, such as Figure 2-Figure 3 As shown, the light emitting element includes a reflective anode 5, a transparent cathode 7, and an organic light emitting layer 6 located between the reflective anode 5 and the transparent cathode 7. The reflective anode 5 can be made of one metal or an alloy of multiple metals such as Ag, Al, Mo, Nd, Ni, Cu, etc., and can be prepared by evaporation or sputtering. The thickness of the reflective anode 5 can be 50nm-500nm; the transparent cathode 7 can be one or more of ITO, IZO, Ag, Al, Mo, Mg, Nd, Ti, Ni, Cu, and can be prepared by evaporation or sputtering. The thickness of the transparent cathode 7 can be 10nm-200nm.

[0073] like Figure 4 As shown, the driving circuit includes: a buffer layer 22, a gate 28, a gate insulating layer 23, an active layer 29, an interlayer insulating layer 24, a source electrode 32, a drain electrode 31, a passivation layer 25, and a planarization layer 26 arranged on a first substrate 1. The reflective anode 5 and the pixel defining layer 4 are located on the planarization layer 26, and the reflective anode 5 is connected to the drain electrode 31 through a via hole penetrating the planarization layer 26 and the passivation layer 25. The planarization layer 26 can be the same film layer as the planarization layer 2.

[0074] In this embodiment, Figure 2 As shown, the transparent display panel further includes: a light shielding layer 3 located on the first substrate 1, and the light shielding layer 3 can be located on the side of the first substrate 1 facing the second substrate 12, or, as shown in Figure 2 and Figure 4 As shown, the shading layer 3 is located on the side of the first substrate 1 away from the second substrate 12, and the orthographic projection of the thin film transistor in the driving circuit on the first substrate 1 is located within the orthographic projection of the shading layer 3 on the first substrate 1, so that the shading layer 3 can block the influence of external light on the thin film transistor device and avoid affecting the performance of the thin film transistor.

[0075] In this embodiment, the first electrode 10 can be one or more of ITO, IZO, Ag, Al, Mo, Mg, Nd, Ti, Ni, and Cu, and can be prepared by evaporation or sputtering. The first electrode 10 can be a transparent electrode or an opaque electrode, and the thickness of the first electrode 10 can be 10nm-200nm. When the first electrode 10 is an opaque electrode, the orthographic projection of the thin film transistor of the driving circuit on the first substrate 1 is located within the orthographic projection of the first electrode 10 on the first substrate 1, so that the setting of the light shielding layer 3 can be omitted, and the first electrode 10 can shield the influence of external light on the thin film transistor device.

[0076] The second electrode 11 may be one or more of ITO, IZO, Ag, Al, Mo, Mg, Nd, Ti, Ni, and Cu, and may be prepared by evaporation or sputtering. The thickness of the second electrode 11 may be 10 nm to 200 nm.

[0077] In this embodiment, the charged light-shielding particles 9 can be black particles. All of the charged light-shielding particles 9 carry the same charge, which can be positive or negative. The diameter of the charged light-shielding particles is less than or equal to 100 microns, which makes it easier for the charged light-shielding particles 9 to move in the electrophoretic layer 8. The charged light-shielding particles 9 can be microparticles or microcapsules or a combination of microparticles.

[0078] When the transparent display function of the transparent display panel needs to be realized, such as Figure 5 As shown, an electric signal with a polarity opposite to that of the charged light-shielding particles 9 can be applied to the first electrode 10, and an electric signal with a polarity identical to that of the charged light-shielding particles 9 can be applied to the second electrode 11, so that the charged light-shielding particles 9 are gathered under the display sub-pixel 100, so that the charged light-shielding particles 9 do not affect the light transmitted by the transparent sub-pixels in the transparent area; when it is necessary to improve the contrast of the display image of the transparent display panel, Figure 6 As shown, an electric signal with the same polarity as that of the charged light-shielding particles 9 can be applied to the first electrode 10, and an electric signal with an opposite polarity to that of the charged light-shielding particles 9 can be applied to the second electrode 11, so that the charged light-shielding particles 9 are gathered under the transparent sub-pixel. In this way, the charged light-shielding particles 9 can absorb the light behind the transparent display panel and improve the contrast of the display image.

[0079] In some embodiments, Figure 3As shown, a common electrode 33 may also be provided on the side of the first substrate 1 facing the second substrate 12, and the orthographic projection of the common electrode 33 on the first substrate 1 may at least partially overlap with the orthographic projections of the display sub-pixels and the transparent sub-pixels on the first substrate 1. Specifically, the orthographic projection of the common electrode 33 on the first substrate 1 may cover the orthographic projections of the display sub-pixels and the transparent sub-pixels on the first substrate 1. The common electrode 33 is a light-transmitting electrode, and the common electrode 33 may be one or more of ITO, IZO, Ag, Al, Mo, Mg, Nd, Ti, Ni, and Cu, and may be prepared by evaporation or sputtering. The thickness of the common electrode 33 may be 10nm-200nm.

[0080] In this embodiment, the shading layer 3 can be eliminated, and the first electrode 10 can be designed as a light-proof electrode. The orthographic projection of the thin-film transistor of the driving circuit on the first substrate 1 is located within the orthographic projection of the first electrode 10 on the first substrate 1. In this way, the shading layer 3 can be omitted, and the influence of external light on the thin-film transistor device can be blocked by the first electrode 10.

[0081] When it is necessary to realize the transparent display function of the transparent display panel, an electric signal can be applied to the first electrode 10 and the common electrode 33, and an electric field with a polarity opposite to that of the charged light-shielding particles 9 is formed through the voltage difference between the first electrode 10 and the common electrode 33. An electric signal is applied to the second electrode 11, and an electric field with the same polarity as that of the charged light-shielding particles 9 is formed through the voltage difference between the second electrode 11 and the common electrode 33, so that the charged light-shielding particles 9 are gathered under the display sub-pixel 100, so that the charged light-shielding particles 9 do not affect the transparent sub-pixel transmission light in the transparent area; when it is necessary to provide When the display contrast of the high-transparent display panel is increased, an electric signal can be applied to the first electrode 10 and the common electrode 33, and an electric field with the same polarity as that of the charged light-shielding particles 9 is formed through the voltage difference between the first electrode 10 and the common electrode 33. An electric signal is applied to the second electrode 11, and an electric field with a polarity opposite to that of the charged light-shielding particles 9 is formed through the voltage difference between the second electrode 11 and the common electrode 33, so that the charged light-shielding particles 9 are gathered under the transparent sub-pixels. In this way, the charged light-shielding particles 9 can absorb the light behind the transparent display panel and improve the contrast of the display.

[0082] An embodiment of the present invention further provides a display device, comprising the transparent display panel as described above.

[0083] The display device includes but is not limited to: a radio frequency unit, a network module, an audio output unit, an input unit, a sensor, a display unit, a user input unit, an interface unit, a memory, a processor, and a power supply. Those skilled in the art will appreciate that the structure of the above-mentioned display device does not constitute a limitation on the display device, and the display device may include more or less of the above-mentioned components, or a combination of certain components, or different component arrangements. In an embodiment of the present invention, the display device includes but is not limited to a display, a mobile phone, a tablet computer, a television, a wearable electronic device, a navigation display device, and the like.

[0084] The display device may be any product or component with a display function, such as a liquid crystal television, a liquid crystal display, a digital photo frame, a mobile phone, a tablet computer, etc., wherein the display device further includes a flexible circuit board, a printed circuit board and a backplane.

[0085] This embodiment allows the charged light-shielding particles 9 to move between the transparent sub-pixel 200 and the display sub-pixel 100, thereby adjusting the partial or entire transparency of the transparent display device and meeting display requirements in various usage scenarios.

[0086] An embodiment of the present invention further provides a working method of a display device, which is applied to the display device as described above, and the working method includes:

[0087] In the first working mode, an electric signal with a polarity opposite to that of the charged light-shielding particles is applied to the first electrode, and an electric signal with a polarity identical to that of the charged light-shielding particles is applied to the second electrode, so that the charged light-shielding particles are gathered under the display sub-pixel;

[0088] In the second working mode, an electric signal with the same polarity as the charged light-shielding particles is applied to the first electrode, and an electric signal with the opposite polarity to the charged light-shielding particles is applied to the second electrode, so that the charged light-shielding particles are gathered under the transparent sub-pixel.

[0089] In this embodiment, the display device includes Figure 2 When the transparent display panel shown in FIG. 1 is used, when the transparent display function of the transparent display panel needs to be realized, such as Figure 5 As shown, an electric signal with a polarity opposite to that of the charged light-shielding particles 9 can be applied to the first electrode 10, and an electric signal with a polarity identical to that of the charged light-shielding particles 9 can be applied to the second electrode 11, so that the charged light-shielding particles 9 are gathered under the display sub-pixel 100, so that the charged light-shielding particles 9 do not affect the light transmitted by the transparent sub-pixels in the transparent area; when it is necessary to improve the contrast of the display image of the transparent display panel, Figure 6As shown, an electric signal with the same polarity as that of the charged light-shielding particles 9 can be applied to the first electrode 10, and an electric signal with an opposite polarity to that of the charged light-shielding particles 9 can be applied to the second electrode 11, so that the charged light-shielding particles 9 are gathered under the transparent sub-pixel. In this way, the charged light-shielding particles 9 can absorb the light behind the transparent display panel and improve the contrast of the display image.

[0090] In this embodiment, the display device includes Figure 3 When the transparent display panel shown in the figure is used, when it is necessary to realize the transparent display function of the transparent display panel, an electric signal can be applied to the first electrode 10 and the common electrode 33, and an electric field with a polarity opposite to that of the charged light-shielding particles 9 is formed through the voltage difference between the first electrode 10 and the common electrode 33. An electric signal is applied to the second electrode 11, and an electric field with the same polarity as that of the charged light-shielding particles 9 is formed through the voltage difference between the second electrode 11 and the common electrode 33, so that the charged light-shielding particles 9 are gathered under the display sub-pixel 100, so that the charged light-shielding particles 9 do not affect the transparent sub-pixel transmission light in the transparent area. line; when it is necessary to improve the contrast of the display image of the transparent display panel, an electric signal can be applied to the first electrode 10 and the common electrode 33, and an electric field with the same polarity as that of the charged light-shielding particles 9 is formed through the voltage difference between the first electrode 10 and the common electrode 33. An electric signal is applied to the second electrode 11, and an electric field with a polarity opposite to that of the charged light-shielding particles 9 is formed through the voltage difference between the second electrode 11 and the common electrode 33, so that the charged light-shielding particles 9 are gathered under the transparent sub-pixel, so that the charged light-shielding particles 9 can absorb the light behind the transparent display panel and improve the contrast of the display image.

[0091] It should be noted that each embodiment in this specification is described in a progressive manner, and the same or similar parts between the embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the embodiments, since they are basically similar to the product embodiments, the description is relatively simple, and the relevant parts can be referred to the partial description of the product embodiments.

[0092] Unless otherwise defined, the technical terms or scientific terms used in the present disclosure should be understood by people with ordinary skills in the field to which the present disclosure belongs. The "first", "second" and similar words used in the present disclosure do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0093] It will be understood that when an element such as a layer, film, region, or substrate is referred to as being “on” or “under” another element, it can be “directly on” or “under” the other element or intervening elements may be present.

[0094] In the description of the above embodiments, specific features, structures, materials or characteristics may be combined in a suitable manner in any one or more embodiments or examples.

[0095] The above is only a specific embodiment of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any person skilled in the art who is familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present disclosure, which should be included in the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be based on the protection scope of the claims.

Claims

1. A transparent display panel, characterized in that: include: A first substrate and a second substrate are arranged opposite to each other, and a cavity is formed between the first substrate and the second substrate; A plurality of sub-pixels are arranged on a side of the first substrate away from the second substrate, the plurality of sub-pixels including display sub-pixels and transparent sub-pixels; a first electrode and a second electrode disposed on a side of the second substrate facing the first substrate, wherein an orthographic projection of the first electrode on the first substrate at least partially overlaps with an orthographic projection of the display sub-pixel on the first substrate, and an orthographic projection of the second electrode on the first substrate at least partially overlaps with an orthographic projection of the transparent sub-pixel on the first substrate, and the second electrode is a light-transmitting electrode; The electrophoretic layer in the cavity and the charged light-shielding particles in the electrophoretic layer can move under the action of the electric field of the first electrode and / or the second electrode.

2. The transparent display panel according to claim 1, characterized in that: The display sub-pixel comprises: A light emitting element and a driving circuit for driving the light emitting element to emit light. The light emitting element comprises a reflective anode, a transparent cathode and an organic light emitting layer located between the reflective anode and the transparent cathode.

3. The transparent display panel according to claim 2, characterized in that: The thickness of the reflective anode is 50nm-500nm; The thickness of the light-transmitting cathode is 10nm-200nm.

4. The transparent display panel according to claim 2, characterized in that: The transparent display panel further includes: A light shielding layer is located on the first substrate, and an orthographic projection of the thin film transistor of the driving circuit on the first substrate is located within the orthographic projection of the light shielding layer on the first substrate.

5. The transparent display panel according to claim 1, characterized in that: The diameter of the charged light-shielding particles is less than or equal to 100 microns.

6. The transparent display panel according to claim 2, characterized in that: The first electrode is a light-proof electrode, and the orthographic projection of the thin film transistor of the driving circuit on the first substrate is located within the orthographic projection of the first electrode on the first substrate.

7. The transparent display panel according to claim 6, characterized in that: The transparent display panel further includes: A common electrode is located on a side of the first substrate facing the second substrate, and the common electrode is a light-transmitting electrode.

8. The transparent display panel according to claim 1, characterized in that: The transparent display panel includes a display sub-pixel column composed of a plurality of the display sub-pixels and a transparent sub-pixel column composed of a plurality of the transparent sub-pixels, and the display sub-pixel column and the transparent sub-pixel column are alternately arranged.

9. A display device, characterized in that: Comprising the transparent display panel as described in any one of claims 1-8.

10. A method for operating a display device, characterized in that: Applied to the display device as claimed in claim 9, the working method comprises: In the first working mode, an electric signal with a polarity opposite to that of the charged light-shielding particles is applied to the first electrode, and an electric signal with a polarity identical to that of the charged light-shielding particles is applied to the second electrode, so that the charged light-shielding particles are gathered under the display sub-pixel; In the second working mode, an electric signal with the same polarity as the charged light-shielding particles is applied to the first electrode, and an electric signal with the opposite polarity to the charged light-shielding particles is applied to the second electrode, so that the charged light-shielding particles are gathered under the transparent sub-pixel.

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