Transparent display

Abstract

The application discloses a transparent display, comprising a first light-emitting panel, a second light-emitting panel and a light-adjusting structure. The first light-emitting panel comprises a first non-light-transmitting area and a first light-transmitting area. The first non-light-transmitting area comprises a plurality of first light-emitting elements. The second light-emitting panel comprises a second non-light-transmitting area and a second light-transmitting area. The second non-light-transmitting area comprises a plurality of second light-emitting elements. The light-adjusting structure comprises a first driving electrode pattern, a second driving electrode pattern and a display medium layer between the first light-emitting panel and the second light-emitting panel. The first driving electrode pattern has a mesh structure overlapping the first non-light-transmitting area and the second non-light-transmitting area.

Description

Technical Field

[0001] This invention relates to a transparent display. Background Technology

[0002] A double-sided display is a display device that can display different images on its front and back sides. For example, when using a double-sided display to play advertisements, the front side can display an image of the product, while the back side can display the product's specifications or introduction. Currently, double-sided displays with double-sided display function can be made by directly bonding two sets of liquid crystal display modules back to back. However, such double-sided displays are very thick and heavy. Another type of double-sided display uses optical elements that are shared by the two liquid crystal display modules. For example, a backlight module can emit light from both sides, allowing the two liquid crystal display modules to share a backlight module. However, the double-sided displays described above are not transparent displays; when viewing a double-sided display, it is impossible to see the environment behind it. Summary of the Invention

[0003] The present invention provides a transparent display that can prevent the images displayed by the first light-emitting panel and the second light-emitting panel from interfering with each other.

[0004] At least one embodiment of the present invention provides a transparent display. The transparent display includes a first light-emitting panel, a second light-emitting panel, and a dimming structure. The first light-emitting panel includes a first opaque area and a first transparent area. The first opaque area includes a plurality of first light-emitting elements. The second light-emitting panel includes a second opaque area and a second transparent area. The second opaque area includes a plurality of second light-emitting elements. The dimming structure includes a first driving electrode pattern, a second driving electrode pattern, and a display medium layer located between the first light-emitting panel and the second light-emitting panel. The first driving electrode pattern has a mesh structure overlapping the first opaque area and the second opaque area.

[0005] At least one embodiment of the present invention provides a transparent display. The transparent display includes a first light-emitting panel, a second light-emitting panel, and a dimming structure. The first light-emitting panel includes a first opaque area and a first transparent area. The first opaque area contains a plurality of first light-emitting elements. The second light-emitting panel includes a second opaque area and a second transparent area. The second opaque area contains a plurality of second light-emitting elements. The dimming structure includes a plurality of scan lines, a plurality of thin-film transistors, a first driving electrode pattern, and a display dielectric layer. The scan lines, the scan lines, and the display dielectric layer are located between the first light-emitting panel and the second light-emitting panel. The scan lines and data lines together form a mesh structure overlapping the first opaque area and the second opaque area. Each thin-film transistor is electrically connected to a corresponding scan line and a corresponding data line. The first driving electrode pattern includes a plurality of first transparent electrodes. The first transparent electrodes overlap the first transparent area and the second transparent area. Each first transparent electrode is electrically connected to a corresponding thin-film transistor. Attached Figure Description

[0006] Figure 1A This is a cross-sectional schematic diagram of a transparent display according to an embodiment of the present invention;

[0007] Figure 1B yes Figure 1A A top view of the first light-emitting panel;

[0008] Figure 1C yes Figure 1A A bottom-view diagram of the second light-emitting panel;

[0009] Figure 1D yes Figure 1A A top-view schematic diagram of the dimming structure;

[0010] Figure 2 This is a waveform diagram of the driving signal of a transparent display according to an embodiment of the present invention;

[0011] Figure 3 This is a waveform diagram of the driving signal of a transparent display according to an embodiment of the present invention;

[0012] Figure 4A This is a cross-sectional schematic diagram of a transparent display according to an embodiment of the present invention;

[0013] Figure 4B yes Figure 4A A top-view schematic diagram of the dimming structure;

[0014] Figure 5 This is a top view schematic diagram of a dimming structure according to an embodiment of the present invention;

[0015] Figure 6A This is a cross-sectional schematic diagram of a transparent display according to an embodiment of the present invention;

[0016] Figure 6B yes Figure 6A A top-view schematic diagram of the dimming structure;

[0017] Figure 7A This is a cross-sectional schematic diagram of a transparent display according to an embodiment of the present invention;

[0018] Figure 7B yes Figure 7A A top-view schematic diagram of the dimming structure;

[0019] Figure 8 yes Figure 7A A circuit diagram of the dimming structure.

[0020] Symbol Explanation

[0021] 1,2,3,4: Transparent displays

[0022] 10: First Light-Emitting Panel

[0023] 11: First non-transparent zone

[0024] 12: First light-transmitting zone

[0025] 20: Second light-emitting panel

[0026] 21: Second non-transparent area

[0027] 22: Second light-transmitting zone

[0028] 30, 30A, 30B: Dimming Structure

[0029] 110: First transparent substrate

[0030] 120: First transparent overlay

[0031] 130: First Circuit Structure

[0032] 140: First light-emitting element

[0033] 150: Transparent encapsulation layer

[0034] 210: Second transparent substrate

[0035] 220: Second transparent overlay

[0036] 230: Second Circuit Structure

[0037] 240: Second light-emitting element

[0038] 250: Transparent encapsulation layer

[0039] 310: First transparent substrate

[0040] 320: Second transparent substrate

[0041] 330, 330A, 330B: First driving electrode patterns

[0042] 340, 340A, 340B: Second driving electrode patterns

[0043] 332: First Chief Cadre

[0044] 334: First Branch

[0045] 350, 370: Insulation layer

[0046] 360, 360A: Display media layer

[0047] 362: Dye

[0048] 364:Liquid crystal molecules

[0049] 366: Black charged particles

[0050] 402: First optical adhesive layer

[0051] 404: Second optical adhesive layer

[0052] CH: Semiconductor Channel Layer

[0053] D: Drain electrode

[0054] D1: First Direction

[0055] D2: Second Direction

[0056] DL: Data cable

[0057] E1: First sub-electrode

[0058] E2: Second sub-electrode

[0059] G: Gate

[0060] PE: First transparent electrode

[0061] S: Source

[0062] SL: Scan line

[0063] TFT: Thin Film Transistor Detailed Implementation

[0064] Figure 1A This is a cross-sectional schematic diagram of a transparent display 1 according to an embodiment of the present invention. Figure 1B yes Figure 1A A top view of the first light-emitting panel. Figure 1C yes Figure 1A A bottom-view diagram of the second light-emitting panel. Figure 1D yes Figure 1AA top-view diagram of the dimming structure. Figure 1A Corresponding Figure 1B , Figure 1C and Figure 1D The location of the midline A-A'. Please refer to... Figure 1A The transparent display 1 includes a first light-emitting panel 10, a second light-emitting panel 20, and a dimming structure 30. The dimming structure 30 is located between the first light-emitting panel 10 and the second light-emitting panel 20, and is bonded to the first light-emitting panel 10 and the second light-emitting panel 20 respectively by a first optical adhesive layer 402 and a second optical adhesive layer 404.

[0065] Please refer to Figure 1A and Figure 1B The first light-emitting panel 10 includes a first opaque area 11 and a first light-transmitting area 12. In this embodiment, the first light-emitting panel 10 includes a first transparent substrate 110, a first transparent cover layer 120, a first circuit structure 130, a plurality of first light-emitting elements 140, and a transparent encapsulation layer 150. The first transparent substrate 110 and the first transparent cover layer 120 overlap each other. The first circuit structure 130, the plurality of first light-emitting elements 140, and the transparent encapsulation layer 150 are located between the first transparent substrate 110 and the first transparent cover layer 120. The first opaque area 11 includes the first circuit structure 130 and the first light-emitting elements 140. In this embodiment, the first circuit structure 130 and the first light-emitting elements 140 are not disposed in the first light-transmitting area 12.

[0066] exist Figure 1A In this embodiment, the first circuit structure 130 is simply illustrated as a single-layer structure; however, in practice, the first circuit structure 130 may include multiple conductive layers and multiple insulating layers. In some embodiments, the first circuit structure 130 also includes a black matrix, thereby reducing the probability of light penetrating the first opaque area 11. The extent of the first opaque area 11 of the first light-emitting panel 10 is defined by the first circuit structure 130. In this embodiment, the first circuit structure 130 has a mesh structure, and the first light-transmitting area 12 corresponds to the portion of the mesh openings in the aforementioned mesh structure. In this embodiment, the first transparent substrate 110 and the first circuit structure 130 located thereon can together form an active thin-film transistor array driving backplane.

[0067] A first light-emitting element 140 is bonded to a first circuit structure 130. In some embodiments, the first light-emitting element 140 includes a miniature light-emitting diode, a micro light-emitting diode, or other suitable light-emitting element. The first light-emitting element 140 may include light-emitting diodes of different colors, for example, a red light-emitting diode, a green light-emitting diode, and a blue light-emitting diode. In some embodiments, a transparent encapsulation layer 150 is disposed on the first light-emitting element 140, and the transparent encapsulation layer 150 selectively extends from a first opaque region 11 to a first transparent region 12. A first transparent cover layer 120 is disposed on the transparent encapsulation layer 150, and the first transparent cover layer 120 may be, for example, a surface protective glass cover, a polymer cover, a polymer film, or other suitable material.

[0068] Please refer to Figure 1A and Figure 1C The second light-emitting panel 20 includes a second opaque area 21 and a second light-transmitting area 22. In this embodiment, the second light-emitting panel 20 includes a second transparent substrate 210, a second transparent cover layer 220, a second circuit structure 230, a plurality of second light-emitting elements 240, and a transparent encapsulation layer 250. The second transparent substrate 210 and the second transparent cover layer 220 overlap each other. The second circuit structure 230, the plurality of second light-emitting elements 240, and the transparent encapsulation layer 250 are located between the second transparent substrate 210 and the second transparent cover layer 220. The second opaque area 21 contains the second circuit structure 230 and the second light-emitting elements 240. In this embodiment, the second light-transmitting area 22 does not contain the second circuit structure 230 and the second light-emitting elements 240.

[0069] exist Figure 1A In this embodiment, the second circuit structure 230 is simply illustrated as a single-layer structure; however, in practice, the second circuit structure 230 may include multiple conductive layers and multiple insulating layers. In some embodiments, the second circuit structure 230 also includes a black matrix, thereby reducing the probability of light penetrating the second opaque area 21. The extent of the second opaque area 21 of the second light-emitting panel 20 is defined by the second circuit structure 230. In this embodiment, the second circuit structure 230 has a mesh structure, and the second light-transmitting area 22 corresponds to the portion of the mesh openings in the aforementioned mesh structure. In this embodiment, the second transparent substrate 210 and the second circuit structure 230 located thereon can together form an active thin-film transistor array driving backplane.

[0070] The second light-emitting element 240 is bonded to the second circuit structure 230. In some embodiments, the second light-emitting element 240 includes a miniature light-emitting diode, a micro light-emitting diode, or other suitable light-emitting element. The second light-emitting element 240 may include light-emitting diodes of different colors, for example, a red light-emitting diode, a green light-emitting diode, and a blue light-emitting diode. In some embodiments, a transparent encapsulation layer 250 is disposed on the second light-emitting element 240, and the transparent encapsulation layer 250 selectively extends from the second opaque region 21 to the second transparent region 22. A second transparent cover layer 220 is disposed on the transparent encapsulation layer 250, and the second transparent cover layer 220 may be, for example, a surface protective glass cover, a polymer cover, a polymer film, or other suitable material.

[0071] Please refer to Figure 1A and Figure 1D The dimming structure 30 includes a first transparent substrate 310, a second transparent substrate 320, a first driving electrode pattern 330, a second driving electrode pattern 340, an insulating layer 350, and a display medium layer 360. The first transparent substrate 310, the second transparent substrate 320, the first driving electrode pattern 330, the second driving electrode pattern 340, the insulating layer 350, and the display medium layer 360 are located between the first light-emitting panel 10 and the second light-emitting panel 20.

[0072] The first driving electrode pattern 330 and the second driving electrode pattern 340 are located on the first transparent substrate 310. The first driving electrode pattern 330 and the second driving electrode pattern 340 are separate from each other. Whether viewed individually or together, the first driving electrode pattern 330 and the second driving electrode pattern 340 have a mesh structure that overlaps the first opaque area 11 and the second opaque area 21.

[0073] The first driving electrode pattern 330 includes a plurality of first sub-electrodes E1. Each first sub-electrode E1 includes a first main stem 332 and a plurality of first branches 334. The first main stem 332 extends along a first direction D1. The first branches 334 connect to the first main stem 332 and extend along a second direction D2.

[0074] The second driving electrode pattern 340 includes a plurality of second sub-electrodes E2. The first sub-electrodes E1 and the second sub-electrodes E2 are arranged alternately in the second direction D2. Each second sub-electrode E2 includes a second main stem 342 and a plurality of second branches 344. The second main stem 342 extends along the first direction D1. The second branches 344 connect to the second main stem 342 and extend along the second direction D2. The second main stem 342 and the second branches 344 are parallel to the first main stem 332 and the first branches 334, respectively.

[0075] In this embodiment, the first driving electrode pattern 330 and the second driving electrode pattern 340 belong to the same conductive layer. Specifically, the first driving electrode pattern 330 and the second driving electrode pattern 340 are defined by the same patterning process. In this embodiment, the first driving electrode pattern 330 and the second driving electrode pattern 340 include an opaque conductive material, such as metal. By overlapping the first driving electrode pattern 330 and the second driving electrode pattern 340 on the first opaque area 11 and the second opaque area 21, the impact of the first driving electrode pattern 330 and the second driving electrode pattern 340 on the transmittance of the transparent display 1 can be reduced.

[0076] An insulating layer 350 is located above and covers the first driving electrode pattern 330 and the second driving electrode pattern 340. In some embodiments, the insulating layer 350 is made of polyimide, silicon oxide, silicon nitride, or other suitable materials.

[0077] The display dielectric layer 360 is located on the insulating layer 350 and includes a dye 362 and liquid crystal molecules 364. For example, orthogonal liquid crystal molecules, monomers, dichroic dyes, and photoinitiators are provided between a first transparent substrate 310 and a second transparent substrate 320, followed by a polymerization reaction induced by ultraviolet light irradiation to form the display dielectric layer 360. In this embodiment, vertical alignment (VA) technology is used to align the liquid crystal molecules 364. For example, the liquid crystal molecules 364 are aligned using polyimide alignment films on the first transparent substrate 310 and the second transparent substrate 320.

[0078] In some embodiments, when the long axis of the liquid crystal molecule 364 is horizontal, the dimming structure 30 presents a bright state that allows light to pass through; when the long axis of the liquid crystal molecule 364 is vertical, the dimming structure 30 presents a dark state that blocks light from passing through. By including the dye 362 in the display medium layer 360, the dark state of the dimming structure 30 can be closer to black.

[0079] In this embodiment, the first driving electrode pattern 330 and the second driving electrode pattern 340 are configured to control the display medium layer 360 using in-plane switching (IPS) technology. A driving voltage (e.g., switching between 20 volts and 0 volts) is applied to one of the first driving electrode pattern 330 and the second driving electrode pattern 340, while a common voltage (e.g., maintained at 0 volts) is applied to the other. In other embodiments, the first driving electrode pattern 330 and the second driving electrode pattern 340 are configured to control the display medium layer 360 using twisted nematic (TN) technology, fringe field switching (FFS) technology, or other suitable methods.

[0080] By setting up the dimming structure 30, interference between the images displayed by the first light-emitting panel 10 and the second light-emitting panel 20 can be avoided. Specifically, the dimming structure 30 can block back light leakage from the first light-emitting panel 10 toward the second light-emitting panel 20 and back light leakage from the second light-emitting panel 20 toward the first light-emitting panel 10, thereby achieving a high-quality transparent double-sided display effect.

[0081] Figure 2 This is a waveform diagram of the driving signal for a transparent display according to an embodiment of the present invention. Figure 2 In the diagram, the topmost image is a waveform diagram of the current versus time (frame) of the first light-emitting element 140 of the first light-emitting panel 10, the middle image is a waveform diagram of the voltage (driving voltage) versus time (frame) of the first driving electrode pattern 330 (or the second driving electrode pattern 340) of the dimming structure 30, and the bottommost image is a waveform diagram of the current versus time (frame) of the second light-emitting element 240 of the second light-emitting panel 20.

[0082] Please refer to Figure 1A and Figure 2 The driving voltage of the dimming structure 30 is adjusted so that the transmittance of the dimming structure 30 is less than 30% (e.g., transmittance T = 10%) or greater than 70% (e.g., transmittance T = 90%). Within the same frame, the dimming structure 30 includes both a high transmittance state and a low transmittance state. In some embodiments, the transmittance of the dimming structure 30 is high when the driving voltage is high. In other embodiments, the transmittance of the dimming structure 30 is high when the driving voltage is low.

[0083] When the dimming structure 30 is in a low transmittance state, current is applied to the first light-emitting element 140 of the first light-emitting panel 10 and the second light-emitting element 240 of the second light-emitting panel 20, causing the first light-emitting element 140 and the second light-emitting element 240 to emit light. Because the dimming structure 30 has low transmittance at this time, the light emitted by the first light-emitting element 140 and the light emitted by the second light-emitting element 240 are less likely to interfere with each other. When the dimming structure 30 is in a high transmittance state, the user can easily see through the dimming structure 30.

[0084] exist Figure 2 In this embodiment, the brightness of the first light-emitting panel 10 and the second light-emitting panel 20 is controlled by pulse-width modulation (PWM). Specifically, in order to obtain different brightness levels W255, W128, and W64, the duration of current application to the first light-emitting element 140 or the second light-emitting element 240 is adjusted; the longer the current application time, the higher the brightness.

[0085] exist Figure 3 In this embodiment, the brightness of the first light-emitting panel 10 and the second light-emitting panel 20 is controlled by pulse-amplitude modulation (PAM). Specifically, in order to obtain different brightness levels W255, W128, and W64, the magnitude of the current applied to the first light-emitting element 140 or the second light-emitting element 240 is adjusted; the larger the applied current, the higher the brightness.

[0086] In some embodiments, the brightness of the first light-emitting panel 10 and the second light-emitting panel 20 can be controlled by combining pulse width modulation and pulse amplitude modulation.

[0087] Figure 4A This is a cross-sectional schematic diagram of a transparent display 2 according to an embodiment of the present invention. Figure 4B yes Figure 4A A top-view diagram of the dimming structure. It must be noted here that... Figure 4A and Figure 4B The embodiments follow Figures 1A to 1D The component reference numerals and partial contents of the embodiments are described below, wherein the same or similar reference numerals are used to represent the same or similar components, and descriptions of the same technical content are omitted. For explanations of the omitted parts, please refer to the foregoing embodiments, and will not be repeated here.

[0088] Please refer to Figure 4A and Figure 4BThe first driving electrode pattern 330 and the second driving electrode pattern 340 of the dimming structure 30 belong to different conductive layers. An insulating layer 350 is sandwiched between the first driving electrode pattern 330 and the second driving electrode pattern 340. The second driving electrode pattern 340 is located on the insulating layer 350, and the insulating layer 370 is located on the second driving electrode pattern 340 and the insulating layer 350.

[0089] In this embodiment, the first driving electrode pattern 330 and the second driving electrode pattern 340 are disposed on different conductive layers, which helps to reduce the probability of short circuit between the first driving electrode pattern 330 and the second driving electrode pattern 340.

[0090] Figure 5 This is a top view schematic diagram of a dimming structure according to an embodiment of the present invention. It must be noted here that... Figure 5 The embodiments follow Figures 1A to 1D The component reference numerals and partial contents of the embodiments are described below, wherein the same or similar reference numerals are used to represent the same or similar components, and descriptions of the same technical content are omitted. For explanations of the omitted parts, please refer to the foregoing embodiments, and will not be repeated here.

[0091] Please refer to Figure 5 The dimming structure 30 includes a first transparent substrate (see reference). Figure 1A ), second transparent substrate (please refer to) Figure 1A First driving electrode pattern 330, second driving electrode pattern 340, insulating layer (please refer to) Figure 1A ), display media layer (please refer to) Figure 1A ), the first branch transparent electrode 380 and the second branch transparent electrode 390.

[0092] Each first branch transparent electrode 380 is connected to a corresponding first sub-electrode E1 and extends from a position overlapping the first opaque region 11 and the second opaque region 21 to a position overlapping the first transparent region 12 and the second transparent region 22. Each first branch transparent electrode 380 includes a third main branch 382 and a plurality of third branches 384. The third main branch 382 extends along a first direction D1. The third branches 384 are connected to the third main branch 384 and extend along a second direction D2.

[0093] Each second branch transparent electrode 390 is connected to a corresponding second sub-electrode E2 and extends from a position overlapping the first opaque region 11 and the second opaque region 21 to a position overlapping the first transparent region 12 and the second transparent region 22. Each second branch transparent electrode 390 includes a fourth main branch 392 and a plurality of fourth branches 394. The fourth main branch 392 extends along a first direction D1. The fourth branches 394 are connected to the fourth main branch 394 and extend along a second direction D2.

[0094] In this embodiment, both the first branch transparent electrode 380 and the second branch transparent electrode 390 are comb-shaped electrodes, and they are interleaved. By adding the first branch transparent electrode 380 and the second branch transparent electrode 390 to the mesh-like first driving electrode pattern 330 and second driving electrode pattern 340, the liquid crystal molecules in the display medium layer can be controlled more uniformly.

[0095] In this embodiment, the first branch transparent electrode 380 and the second branch transparent electrode 390 include transparent conductive materials, such as indium tin oxide, indium zinc oxide, aluminum tin oxide, aluminum zinc oxide, indium gallium zinc oxide, or a stacked layer of materials.

[0096] Figure 6A This is a cross-sectional schematic diagram of a transparent display 3 according to an embodiment of the present invention. Figure 6B yes Figure 6A A top-view diagram of the dimming structure. It must be noted here that... Figure 6A and Figure 6B The embodiments follow Figures 1A to 1D The component reference numerals and partial contents of the embodiments are described below, wherein the same or similar reference numerals are used to represent the same or similar components, and descriptions of the same technical content are omitted. For explanations of the omitted parts, please refer to the foregoing embodiments, and will not be repeated here.

[0097] Please refer to Figure 6A and Figure 6B The dimming structure 30A includes a first transparent substrate 310, a second transparent substrate 320, a first driving electrode pattern 330A, a second driving electrode pattern 340A, and a display medium layer 360A. The first transparent substrate 310, the second transparent substrate 320, the first driving electrode pattern 330A, the second driving electrode pattern 340A, and the display medium layer 360A are located between the first light-emitting panel 10 and the second light-emitting panel 20.

[0098] The first driving electrode pattern 330A and the second driving electrode pattern 340A are respectively located on the first transparent substrate 310 and the second transparent substrate 320. The first driving electrode pattern 330A and the second driving electrode pattern 340A are separate from each other. The first driving electrode pattern 330A has a mesh structure overlapping the first opaque region 11 and the second opaque region 21. The second driving electrode pattern 340A has a planar structure overlapping the first transparent region 12, the second transparent region 22, the first opaque region 11, and the second opaque region 21.

[0099] In this embodiment, the first driving electrode pattern 330A is made of an opaque conductive material, such as metal. By overlapping the first driving electrode pattern 330A with the first opaque area 11 and the second opaque area 21, the impact of the first driving electrode pattern 330A on the transmittance of the transparent display 3 can be reduced.

[0100] In this embodiment, the second driving electrode pattern 340A includes a transparent conductive material, such as indium tin oxide, indium zinc oxide, aluminum tin oxide, aluminum zinc oxide, indium gallium zinc oxide, or a stacked layer of materials.

[0101] The display dielectric layer 360A is located between the first driving electrode pattern 330A and the second driving electrode pattern 340A, and includes black charged particles 366.

[0102] In this embodiment, the first driving electrode pattern 330A and the second driving electrode pattern 340A are configured to control the display dielectric layer 360A using electrophoresis technology. A positive voltage is applied to one of the first driving electrode pattern 330A and the second driving electrode pattern 340A, while a negative voltage is applied to the other. When black charged particles 366 are attracted to the first driving electrode pattern 330A, light can pass through the mesh-like first driving electrode pattern 330A, causing the dimming structure 30A to appear bright. When black charged particles 366 are attracted to the second driving electrode pattern 340A, the black charged particles 366 cover the entire second driving electrode pattern 340A, causing the dimming structure 30A to appear dark.

[0103] By setting up the dimming structure 30A, interference between the images displayed by the first light-emitting panel 10 and the second light-emitting panel 20 can be avoided. Specifically, the dimming structure 30A can block back light leakage from the first light-emitting panel 10 toward the second light-emitting panel 20 and back light leakage from the second light-emitting panel 20 toward the first light-emitting panel 10, thereby obtaining a high-quality transparent double-sided display effect.

[0104] Figure 7A This is a cross-sectional schematic diagram of a transparent display 4 according to an embodiment of the present invention. Figure 7B yes Figure 7A A top-view diagram of the dimming structure. Figure 8 yes Figure 7A The circuit diagram of the dimming structure is shown below. It must be noted here that... Figures 7A to 8 The embodiments follow Figures 1A to 1D The component reference numerals and partial contents of the embodiments are described below, wherein the same or similar reference numerals are used to represent the same or similar components, and descriptions of the same technical content are omitted. For explanations of the omitted parts, please refer to the foregoing embodiments, and will not be repeated here.

[0105] Please refer to Figures 7A to 8 The dimming structure 30B includes a first transparent substrate 310, a second transparent substrate 320, scan lines SL, data lines DL, thin-film transistors (TFTs), a first driving electrode pattern 330B, a second driving electrode pattern 340B, an insulating layer 350, an insulating layer 370, and a display medium layer 360. The first transparent substrate 310, the second transparent substrate 320, the first driving electrode pattern 330B, the second driving electrode pattern 340B, the insulating layer 350, the insulating layer 370, and the display medium layer 360 are located between the first light-emitting panel 10 and the second light-emitting panel 20.

[0106] A thin-film transistor (TFT) is located on the first transparent substrate 310 and electrically connected to the corresponding scan line SL and the corresponding data line DL. The TFT includes a gate G, a semiconductor channel layer CH, a source S, and a drain D. The gate G is connected to the corresponding scan line SL. An insulating layer 350 covers the gate G, the semiconductor channel layer CH, and the scan line SL. The semiconductor channel layer CH is located on the insulating layer 350 and overlaps the gate G. In this embodiment, the insulating layer 350 can serve as a gate insulating layer. The source S and the drain D are connected to the semiconductor channel layer CH. The source S is connected to the corresponding data line DL. An insulating layer 370 is located on the data line DL, the source S, and the drain D.

[0107] In this embodiment, the scan line SL extends along the second direction D2, and the data line DL extends along the first direction D1. The scan line SL and the data line DL together form a mesh structure overlapping the first opaque region 11 and the second opaque region 21. In this embodiment, the scan line SL, the data line DL, and the thin-film transistor (TFT) all overlap the first opaque region 11 and the second opaque region 21, thereby reducing the impact of the scan line SL, the data line DL, and the TFT on the transmittance of the transparent display 4.

[0108] In this embodiment, the thin-film transistor (TFT) is a bottom-gate thin-film transistor, but the invention is not limited thereto. According to other embodiments, the aforementioned thin-film transistor (TFT) may also be a top-gate thin-film transistor, a dual-gate thin-film transistor, or other types of thin-film transistors.

[0109] The first driving electrode pattern 330B is located on the first transparent substrate 310. In this embodiment, the first driving electrode pattern 330B is located on the insulating layer 370 and is electrically connected to the drain D. In this embodiment, the first driving electrode pattern 330B includes a plurality of first transparent electrodes PE, each of which is electrically connected to the drain D of the corresponding thin-film transistor TFT. The first transparent electrodes PE overlap the first light-transmitting region 12 and the second light-transmitting region 22.

[0110] The second driving electrode pattern 340B is located on the second transparent substrate 320. The second driving electrode pattern 340B has a planar structure that overlaps the first light-transmitting area 12, the second light-transmitting area 22, the first light-blocking area 11, and the second light-blocking area 21.

[0111] In this embodiment, the first driving electrode pattern 330B and the second driving electrode pattern 340B include transparent conductive materials, such as indium tin oxide, indium zinc oxide, aluminum tin oxide, aluminum zinc oxide, indium gallium zinc oxide, or a stacked layer of materials.

[0112] The display dielectric layer 360 is located on the insulating layer 370 and between the first driving electrode patterns 330B and the second driving electrode patterns 340B. The display dielectric layer 360 includes a dye 362 and liquid crystal molecules 364. For example, positive liquid crystal molecules, monomers, dichroic dyes, and photoinitiators are provided between the first transparent substrate 310 and the second transparent substrate 320, and then a polymerization reaction is induced by ultraviolet light irradiation to form the display dielectric layer 360.

[0113] In this embodiment, the first driving electrode pattern 330B and the second driving electrode pattern 340B are configured to control the display medium layer 360 using twisted nematic (TN) technology. A liquid crystal capacitor Cls is located between the first driving electrode pattern 330B and the second driving electrode pattern 340B. The first driving electrode pattern 330B and the capacitor electrode ( Figure 7A and Figure 7B (Illustrated) Between them is a storage capacitor Cs, wherein the capacitor electrodes, for example, belong to the same conductive layer as the scan line SL.

[0114] By setting up the dimming structure 30B, interference between the images displayed by the first light-emitting panel 10 and the second light-emitting panel 20 can be avoided. Specifically, the dimming structure 30B can block back light leakage from the first light-emitting panel 10 toward the second light-emitting panel 20 and back light leakage from the second light-emitting panel 20 toward the first light-emitting panel 10, thereby achieving a high-quality transparent double-sided display effect.

Claims

1. A transparent display, comprising: The first light-emitting panel includes a first opaque area and a first light-transmitting area, wherein the first opaque area contains a plurality of first circuit structures and a plurality of first light-emitting elements, and the first light-transmitting area does not contain the first circuit structures and the first light-emitting elements. The first circuit structure has a first mesh structure, and the first light-transmitting area corresponds to the portion of the mesh of the first mesh structure. The second light-emitting panel includes a second opaque area and a second light-transmitting area, wherein the second opaque area contains a plurality of second circuit structures and a plurality of second light-emitting elements, and the second light-transmitting area does not contain the second circuit structures and the second light-emitting elements. The second circuit structure has a second mesh structure, and the second light-transmitting area corresponds to the portion of the mesh of the second mesh structure. as well as The dimming structure is located between the first light-emitting panel and the second light-emitting panel, and includes: A first driving electrode pattern and a second driving electrode pattern are located between the first light-emitting panel and the second light-emitting panel, wherein the first driving electrode pattern has a mesh structure overlapping the first opaque area and the second opaque area; as well as The display medium layer is located between the first light-emitting panel and the second light-emitting panel, so that the dimming structure presents a bright state in which light can pass through and a dark state in which light can be blocked. The dark state blocks the back-side light leakage of the first light-emitting panel toward the second light-emitting panel and the back-side light leakage of the second light-emitting panel toward the first light-emitting panel.

2. The transparent display as claimed in claim 1, wherein the display medium layer comprises black charged particles or the display medium layer comprises dye and liquid crystal molecules, the first light-emitting panel further comprises a first transparent substrate, the first transparent substrate and the first circuit structures thereon form an active thin-film transistor array driving backplane, each of the first light-emitting elements is a red light-emitting diode, a green light-emitting diode or a blue light-emitting diode, and the first light-emitting elements are respectively bonded to the first circuit structures, the second light-emitting panel further comprises a second transparent substrate, the second transparent substrate and the second circuit structures thereon form an active thin-film transistor array driving backplane, each of the second light-emitting elements is a red light-emitting diode, a green light-emitting diode or a blue light-emitting diode, and the second light-emitting elements are respectively bonded to the second circuit structures.

3. The transparent display of claim 1, wherein the second driving electrode pattern has another mesh structure overlapping the first opaque area and the second opaque area, and wherein the first driving electrode pattern and the second driving electrode pattern respectively include a plurality of first sub-electrodes and a plurality of second sub-electrodes, the first sub-electrodes and the second sub-electrodes being arranged alternately, and each first sub-electrode includes: The first main trunk extends along the first direction; as well as Multiple first branches connect to the first main branch and extend along a second direction, and each of the second sub-electrodes includes: The second main branch extends along the first direction; as well as Multiple second branches connect to the second main branch and extend along the second direction.

4. The transparent display as claimed in claim 3, wherein the first driving electrode pattern and the second driving electrode pattern comprise an opaque conductive material, and the dimming structure further comprises: Multiple first-branch transparent electrodes, each of which is connected to a corresponding first sub-electrode; as well as Multiple second-branch transparent electrodes, each of which is connected to the corresponding second sub-electrode.

5. The transparent display of claim 4, wherein each of the first branch transparent electrodes comprises: The third main branch extends along this first direction; as well as Multiple third branches connect to the third main branch and extend along the second direction, and each of the second branch transparent electrodes includes: The fourth main branch extends along this first direction; as well as Multiple fourth branches connect to the fourth main branch and extend along the second direction.

6. The transparent display of claim 1, wherein the first driving electrode pattern and the second driving electrode pattern belong to the same conductive layer.

7. The transparent display of claim 1, wherein an insulating layer is sandwiched between the first driving electrode pattern and the second driving electrode pattern.

8. The transparent display as claimed in claim 1, wherein the second driving electrode pattern has a planar structure overlapping the first light-transmitting area, the second light-transmitting area, the first light-blocking area, and the second light-blocking area, wherein the display medium layer is located between the first driving electrode pattern and the second driving electrode pattern, wherein the dimming structure further includes a first transparent substrate and a second transparent substrate, the display medium layer is located between the first transparent substrate and the second transparent substrate, and the first transparent substrate and the second transparent substrate are located between the first light-emitting panel and the second light-emitting panel.

9. A transparent display, comprising: The first light-emitting panel includes a first opaque area and a first light-transmitting area, wherein the first opaque area contains a plurality of first circuit structures and a plurality of first light-emitting elements, and the first light-transmitting area does not contain the first circuit structures and the first light-emitting elements. The first circuit structure has a first mesh structure, and the first light-transmitting area corresponds to the portion of the mesh of the first mesh structure. The second light-emitting panel includes a second opaque area and a second light-transmitting area, wherein the second opaque area contains a plurality of second circuit structures and a plurality of second light-emitting elements, and the second light-transmitting area does not contain the second circuit structures and the second light-emitting elements. The second circuit structure has a second mesh structure, and the second light-transmitting area corresponds to the portion of the mesh of the second mesh structure. as well as The dimming structure is located between the first light-emitting panel and the second light-emitting panel, and includes: A first transparent substrate and a second transparent substrate; Multiple scan lines and multiple data lines are located between the first light-emitting panel and the second light-emitting panel, wherein these scan lines and data lines together form a mesh structure overlapping the first opaque area and the second opaque area; and Multiple thin-film transistors are located on the first transparent substrate, and each thin-film transistor is electrically connected to a corresponding scan line and a corresponding data line; A first driving electrode pattern includes a plurality of first transparent electrodes, which overlap the first light-transmitting region and the second light-transmitting region, wherein each of the first transparent electrodes is electrically connected to a corresponding thin-film transistor; and The display medium layer is located between the first light-emitting panel and the second light-emitting panel and between the first transparent substrate and the second transparent substrate, so that the dimming structure presents a bright state in which light can pass through and a dark state in which light can be blocked. The dark state blocks the back-side light leakage of the first light-emitting panel toward the second light-emitting panel and the back-side light leakage of the second light-emitting panel toward the first light-emitting panel.

10. The transparent display of claim 9, further comprising: The second driving electrode pattern overlaps the first light-transmitting area, the second light-transmitting area, the first light-blocking area, and the second light-blocking area, wherein the display dielectric layer is located between the first driving electrode pattern and the second driving electrode pattern, and any one of the first circuit structures and the second circuit structures includes multiple conductive layers, multiple insulating layers, and a black matrix.

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