TWI555181B - Transparent display panel - Google Patents

Description

Transparent display panel

The present invention relates to a transparent display panel, and more particularly to a transparent display panel having high transmittance.

A transparent display panel refers to a display device that can provide a transparent display state so that a viewer can see a scene located behind it, which is commonly used in a window or a vending machine to display a display image before displaying a physical item. The transparent display panel generally includes two areas of a display area and a transparent area, wherein the display area can provide a display panel for viewing by a viewer, and the transparent area is transparent so that the viewer can see the perspective to view the scene behind it. The pixels in the display area are provided with pixels, and the wires for driving the pixels, such as the gate lines and the data lines, pass through the transparent area and occupy the area of the transparent area, thereby causing the transparent area to reduce the penetration area and reduce the transmittance. .

One of the objects of the present invention is to provide a transparent display panel having high transmittance.

An embodiment of the present invention provides a transparent display panel including a substrate, a pixel array, and a plurality of signal lines. The substrate has a plurality of display areas and a plurality of transparent areas. The pixel array is disposed on the substrate, wherein the pixel array includes a plurality of sub-pixels and a plurality of first openings. The secondary pixels are connected to each other in a first direction and a second direction, and each of the pixels is overlapped with a corresponding display area, and each of the first openings is surrounded by a part of the pixels, and each of the pixels The first opening overlaps with a corresponding transparent region. The signal line is disposed on the substrate and electrically connected to the sub-pixel, wherein the signal line is disposed in the display area along the display area.

The signal line of the transparent display panel of the present invention is disposed in the display area and is not disposed in the transparent area, and does not occupy the area of the transparent area, so the transparent area of the transparent area is not reduced, so the transparent area of the transparent display panel Can have high penetration.

1‧‧‧Transparent display panel

10‧‧‧Substrate

20‧‧‧ pixel array

30‧‧‧Signal line

10P‧‧‧ display area

10T‧‧‧Transparent Zone

21‧‧‧ first pixel

22‧‧‧ second pixel

23‧‧‧ Third pixel

24‧‧‧ first opening

D1‧‧‧ first direction

D2‧‧‧ second direction

Z‧‧‧Vertical projection direction

26‧‧‧second opening

301‧‧‧First signal line

302‧‧‧Second signal line

GL‧‧‧ gate line

DL‧‧‧ data line

PL‧‧‧Power cord

T1‧‧‧ switching components

T2‧‧‧ drive components

C‧‧‧capacitive components

40‧‧‧Lighting elements

G1‧‧‧ gate

S1‧‧‧ source

D1‧‧‧Bungee

G2‧‧‧ gate

S2‧‧‧ source

D2‧‧‧汲polar

OVDD‧‧‧ voltage signal

OVSS‧‧‧ voltage signal

42‧‧‧First electrode

44‧‧‧Display media layer

46‧‧‧second electrode

1'‧‧‧Transparent display panel

2‧‧‧Transparent display panel

3‧‧‧Transparent display panel

4‧‧‧Transparent display panel

4'‧‧‧Transparent display panel

FIG. 1 is a top plan view showing a transparent display panel according to a first embodiment of the present invention.

Fig. 2 is a schematic cross-sectional view taken along line A-A' of Fig. 1.

Fig. 3 is a view showing an equivalent circuit diagram of a single-pixel pixel of the transparent display panel of the first embodiment of the present invention.

4 is a cross-sectional view showing a single-pixel of a transparent display panel according to a first embodiment of the present invention.

Fig. 5 is a view showing a transparent display panel of a modified embodiment of the first embodiment of the present invention.

Figure 6 is a schematic view showing a transparent display panel of a second embodiment of the present invention.

FIG. 7 is a schematic view showing a transparent display panel of a third embodiment of the present invention.

FIG. 8 is a schematic view showing a transparent display panel of a fourth embodiment of the present invention.

Fig. 9 is a view showing a transparent display panel of a modified embodiment of the fourth embodiment of the present invention.

The present invention will be further understood by those of ordinary skill in the art of the present invention. The preferred embodiments of the present invention are set forth in the accompanying drawings.

Please refer to Figure 1 and Figure 2. 1 is a top plan view of a transparent display panel according to a first embodiment of the present invention, and FIG. 2 is a cross-sectional view taken along line A-A' of FIG. 1. As shown in FIG. 1 and FIG. 2, the transparent display panel 1 of the present embodiment includes a substrate 10 and a pixel. Array 20 and a plurality of signal lines 30. The substrate 10 has a plurality of display regions 10P and a plurality of transparent regions 10T. The substrate 10 can be a transparent substrate such as a glass substrate, a quartz substrate, a plastic substrate, or other suitable rigid substrate or flexible substrate. The pixel array 20 is disposed on the substrate 10, and the pixel array 20 includes a plurality of sub-pixels and a plurality of first openings 24. The secondary pixels include a plurality of first pixels 21 for displaying a first color image, a plurality of second pixels 22 for displaying a second color image, and a plurality of third pixels 23, Used to display a third color image. For example, the first pixel 21, the second pixel 22, and the third pixel 23 are red sub-pixels, green sub-pixels, and blue sub-pixels, respectively, for providing red images, Green image and blue image. In other variant embodiments, the sub-pixels may also be sub-pixels of any color such as cyan, white or yellow. Further, the first pixel 21, the second pixel 22, and the third pixel 23 are both disposed in the display region 10P of the substrate 10 and are not disposed in the transparent region 10T. In the present embodiment, the display area 10P is basically an area in which the secondary pixels are provided and can provide display, that is, viewed from the display surface of the transparent display panel 1, the viewer can observe the first in the display area 10P. The image provided by the second pixel 21, the second pixel 22, and the third pixel 23 cannot penetrate the display region 10P and the rear scene of the display region 10P is observed. It is worth noting that there may be fine gaps at the junction of adjacent sub-pixels. Although the gap may be transparent, the width of the gap is only a few micrometers and cannot be viewed by the human eye. The gap between the sub-pixels is still considered to be part of the display area 10P. In addition, in an embodiment, a light shielding layer may be disposed corresponding to the fine slit at the boundary of the adjacent sub-pixels. On the other hand, the transparent region 10T does not actively provide a display screen but has a transparent characteristic, so that the viewer can observe the rear scene of the transparent region 10T via the transparent region 10T.

The secondary pixels are connected to each other in the first direction D1 and the second direction D2, and each of the pixels is overlapped with a corresponding display region 10P in the vertical projection direction Z, and each of the first openings 24 is partially Surrounded by sub-pixels. For example, in the embodiment, each of the first openings 24 is completely surrounded by a part of the secondary pixels to form a closed type opening, but is not limited thereto. Further, each of the first openings 24 overlaps with a corresponding transparent region 10T in the vertical projection direction Z. In this implementation In the example, the first direction D1 is the horizontal direction of the first figure, and the second direction D2 is the vertical direction of the first figure, but is not limited thereto. Further, the sub-pixels and the first opening 24 are alternately arranged in the first direction D1 and the second direction D2. For example, in this embodiment, each first opening 24 is surrounded by four first-order pixels 21, four second-order pixels 22, and four third-order pixels 23, wherein each first The sub-pixel 21 and each of the third pixels 23 are substantially L-shaped sub-pixels, and each second pixel 22 is substantially a rectangular sub-pixel, and each of the first openings 24 is substantially a cross-shaped opening, but Not limited to this. In addition, the pixel array 20 may further include a plurality of second openings 26, each of which is partially surrounded by a portion of the sub-pixels to form an open-type opening, and each of the second openings 26 is transparent with a corresponding one. Zone 10T overlaps. The second opening 26 is located at an opening of the edge of the pixel array 20, and the second opening 26 of the present embodiment is substantially T-shaped.

In addition, the signal line 30 is disposed on the substrate 10 and electrically connected to the sub-pixel, and the signal line 30 is disposed in the display area 10P along the display area 10P. The signal line 30 can be any wire used to drive the pixel array 20. For example, the signal line 30 can include a plurality of first signal lines 301 extending through at least a portion of the pixels in the first direction D1, and the plurality of second signal lines 302 substantially extending through at least a portion in the second direction D2. Secondary pixels. The first signal line 301 and the second signal line 302 can be straight wires or curved wires. The first signal line 301 and the second signal line 302 may be formed by the same or different patterned conductive layers, and the first signal line 301 and the second signal line 302 may be signal signals of a single layer structure or a multi-layer stacked structure, respectively. The material of the line, and the signal line 30, is preferably an opaque conductive material such as a metal, which may have low electrical resistance and good electrical conductivity. Although the signal line 30 has a opaque characteristic, since the first signal line 301 and the second signal line 302 are completely disposed in the display area 10P and are not disposed in the transparent area 10T, the area of the transparent area 10T is not occupied. Therefore, the penetration area of the transparent region 10T is not reduced and the high transmittance can be maintained.

Please refer to Figures 3 and 4, and refer to Figures 1 and 2 together. FIG. 3 is a diagram showing an equivalent circuit diagram of a single-pixel pixel of the transparent display panel of the first embodiment of the present invention, No. 4 The figure shows a schematic cross-sectional view of a single-pixel of a transparent display panel according to a first embodiment of the present invention. The transparent display panel of this embodiment is exemplified by an electroluminescent display panel, but is not limited thereto. The transparent display panel may also be other self-illuminating display panels such as a field emission display panel, a plasma display panel, or the like, or a non-self-luminous display panel such as a liquid crystal display panel, an electrowetting display panel, an electrophoretic display panel, or the like. As shown in FIGS. 3 and 4, each pixel of the transparent display panel of the present embodiment includes a gate line GL, a data line DL, a power line PL, a switching element T1, a driving element T2, a capacitance element C, and a light emitting. Element 40. The gate line GL is electrically connected to the gate G1 of the switching element T1 for controlling the opening of the switching element T1. The data line DL is electrically connected to the source S1 of the switching element T1 for providing a data signal. The drain D1 of the switching element T1 is electrically connected to the gate G2 of the driving element T2 and one end of the capacitive element C. The power line PL is electrically connected to the source S2 of the driving element T2 and the other end of the capacitive element C for transmitting a voltage signal OVDD. The drain D2 of the driving element T2 is electrically connected to the light emitting element 40. The light-emitting element 40 of the present embodiment is an electroluminescent device, such as an organic diode (OLED) light-emitting element, including a first electrode 42, a second electrode 46, and a display dielectric layer 44. The first electrode 42 can be, for example, an anode that is electrically coupled to the drain D2 of the drive element D2. The second electrode 46 can be, for example, a cathode that can receive a voltage signal OVSS. The display dielectric layer 44 can be, for example, an organic light-emitting layer disposed between the first electrode 42 and the second electrode 46 and can be driven to emit light by a voltage difference between the voltage signal OVDD and the voltage signal OVSS. Light-emitting element 40 can include light-emitting elements to display images of different colors. For example, the light-emitting element 40 of the first pixel 21 may be a red light-emitting element for displaying a red image; the light-emitting element 40 of the second pixel 22 may be a green light-emitting element for displaying a green image; The light-emitting element 40 of the cubic pixel 23 can be a blue light-emitting element for displaying a blue image. In other variant embodiments, the first pixel 21, the second pixel 22, and the third pixel 23 of the light-emitting elements 40 may all be white light-emitting elements, and are respectively provided with red, green, and blue filters. The way of the light sheet shows the red image, the green image and the blue image.

In this embodiment, one of the first electrode 42 and the second electrode 46 may be reversed. The emitter electrode has a light blocking effect. For example, the transparent display panel 1 of the present embodiment may be a top-emitting transparent display panel, wherein the first electrode 42 is a reflective electrode for shielding, and the second electrode 46 is a penetrating electrode. The line 30 can be disposed under the first electrode 42, whereby the first electrode 42 can shield the signal line 30 so that the observer does not observe the signal line 30, and the observer can still penetrate the second electrode 46 to view the display. The screen of the area 10P. In addition, the first signal line 301 of the present embodiment may be the gate line GL and/or the power line PL, and the second signal line 302 may be the data line DL, but is not limited thereto. As shown in FIG. 2, the first signal line 301 and the second signal line 302 may be formed by different layers of patterned conductive layers, but viewed in the vertical projection direction Z, the first signal line 301 and the second signal line 302 are both viewed. They are all located in the display area 10P, so they do not occupy the area of the transparent area 10T, so the penetration rate of the transparent area 10T is not affected. In addition, the first signal line 301 and the second signal line 302 in the display area 10P are blocked by the first electrode 42 and therefore do not affect the display effect. In a variant embodiment, the transparent display panel 1 can be a bottom-emitting transparent display panel, wherein the second electrode 46 is a reflective electrode for shielding, and the first electrode 42 is a penetrating electrode. In this case, the signal line 30 can be disposed on the second electrode 46, whereby the second electrode 46 can shield the signal line 30 so that the observer does not observe the signal line 30, and the observer can still penetrate the first electrode 42 to view the display area. 10P picture. In another variant embodiment, the transparent display panel may further comprise a light shielding layer such as a black matrix layer or other film layer having light blocking properties, and the light shielding layer overlaps the signal line 30 in the vertical projection direction Z, thereby being shielded The signal line 30 is such that the observer does not observe the signal line 30.

The transparent display panel of the present invention is not limited to the above embodiment. The transparent display panels of other embodiments of the present invention will be sequentially described below, and in order to facilitate the comparison of the different embodiments and simplify the description, the same symbols are used to denote the same components in the following embodiments, and are mainly directed to The differences between the embodiments will be described, and the repeated portions will not be described again.

Please refer to Figure 5. Fig. 5 is a view showing a transparent display panel of a modified embodiment of the first embodiment of the present invention. As shown in Fig. 5, in the transparent display panel 1' of the present embodiment, Each of the first openings 24 is surrounded by four first-order pixels 21, four second-order pixels 22, and four third-order pixels 23, wherein each of the first pixels 21 and each of the third pixels The prime 23 is substantially an L-shaped sub-pixel, and each second pixel 22 is substantially a polygonal sub-pixel (the second pixel 22 of the embodiment is a hexagonal sub-pixel), and each of the first openings 24 is substantially a circular opening, but is not limited thereto. In addition, the pixel array 20 may further include a plurality of second openings 26, each of which is partially surrounded by a portion of the sub-pixels to form an open-type opening, and each of the second openings 26 is transparent with a corresponding one. Zone 10T overlaps. The second opening 26 is an opening at the edge of the pixel array 20, and the second opening 26 of the present embodiment is substantially a semi-circular opening. The first signal line 301 and the second signal line 302 can be straight wires or curved wires. Since the first signal line 301 and the second signal line 302 are completely disposed in the display area 10P and are not disposed in the transparent area 10T, the area of the transparent area 10T is not occupied, so the penetration area of the transparent area 10T is not caused. Reduced to maintain high penetration.

Please refer to Figure 6. Figure 6 is a schematic view showing a transparent display panel of a second embodiment of the present invention. As shown in FIG. 6, in the transparent display panel 2 of the present embodiment, each of the first openings 24 is divided into two first-order pixels 21, four second-order pixels 22, and two third-order pixels. 23 closed openings formed by the surrounding. For example, each of the first pixel 21 and each of the third pixels 23 is substantially a trapezoidal sub-pixel, and each second pixel 22 is substantially a rectangular sub-pixel, and each of the first openings 24 is substantially It is a circular opening. In addition, the second opening 26 of the present embodiment is substantially semi-circular. In this embodiment, the signal line 30 can include a plurality of first signal lines 301 extending through at least a portion of the pixels in the first direction D1, and the plurality of second signal lines 302 substantially extending through the second direction D2. Part of the second pixel. Since the first signal line 301 and the second signal line 302 are completely disposed in the display area 10P and are not disposed in the transparent area 10T, the area of the transparent area 10T is not occupied, so the penetration area of the transparent area 10T is not caused. Reduced to maintain high penetration.

Please refer to Figure 7. FIG. 7 is a schematic view showing a transparent display panel of a third embodiment of the present invention. As shown in Fig. 7, any one of the first openings 24 is drawn by two images of the same color. Surrounded by sub-pixels of two different color images. For example, a portion of the first opening 24 is surrounded by two first sub-pixels 21, a second sub-pixel 22, and a third sub-pixel 23; a portion of the first opening 24 is two The second pixel 22, a first pixel 21 and a third pixel 23 are surrounded; a portion of the first opening 24 is composed of two third pixels 23, a second pixel 22, and a Surrounded by the first pixel 21 . In detail, in the transparent display panel 3 of the present embodiment, the first pixel 21, the second pixel 22, and the third pixel 23 are respectively located in different rows of the pixel array 20, for example, the first The sub-pixels 21 are located in the first row, the fourth row, the seventh row of the pixel array 20, and so on; the third pixel 23 is located in the second row, the fifth row, and the second of the pixel array 20. 8 lines..., and so on; the second pixel 22 is located on the 3rd, 6th, and 9th lines of the pixel array 20, and so on. In addition, at least one of the first openings 24 is surrounded by two first-order pixels 21, a second-order pixel 22, and a third-order pixel 23, at least one of which is at least one of the first openings 24. Surrounded by a first pixel 21, two second pixels 22, and a third pixel 23, and at least one of the first openings 24 is a first pixel 21, a first The second pixel 22 and the two third pixels 23 are surrounded. In this embodiment, each of the first pixels 21, each of the second pixels 22, and each of the third pixels 23 are substantially rectangular sub-pixels or cross-shaped pixels, and each of the first openings 24 is substantially The upper is a rectangular opening. For example, in the present embodiment, the first pixel 21, the second pixel 22, and the third pixel 23 located in the even rows of the pixel array 20 are cross-shaped pixels, and are located in the pixel. The first pixel 21, the second pixel 22, and the third pixel 23 of the even rows of the array 20 are rectangular sub-pixels, but are not limited thereto. Additionally, the second opening 26 is located at an opening in the edge of the pixel array 20, and the second opening 26 of the present embodiment is substantially a rectangular opening. In this embodiment, the signal line 30 can include a plurality of first signal lines 301 extending through at least a portion of the pixels in the first direction D1, and the plurality of second signal lines 302 substantially extending through the second direction D2. Part of the second pixel. Since the first signal line 301 and the second signal line 302 are completely disposed in the display area 10P and are not disposed in the transparent area 10T, the area of the transparent area 10T is not occupied, so the penetration area of the transparent area 10T is not caused. Reduced to maintain high penetration.

Please refer to Figure 8. FIG. 8 is a schematic view showing a transparent display panel of a fourth embodiment of the present invention. As shown in FIG. 8, in the transparent display panel 4 of the present embodiment, the first pixel 21 and the third pixel 23 are arranged in an odd-numbered column of the pixel array 20 in an interlaced manner, and the second drawing is performed. The prime 22 is disposed in the even columns of the pixel array 20. Further, each of the first openings 24 is surrounded by two first-order pixels 21, two second-order pixels 22, and two third-order pixels 23. In this embodiment, each of the first pixel 21, each of the second pixels 22 and each of the third pixels 23 is substantially a rectangular sub-pixel, and each of the first openings 24 is substantially a rectangular opening. Additionally, the second opening 26 is located at an opening in the edge of the pixel array 20, and the second opening 26 of the present embodiment is substantially a rectangular opening. The signal line 30 can include a plurality of first signal lines 301 extending through at least a portion of the pixels in the first direction D1, and a plurality of second signal lines 302 extending through at least a portion of the pixels in the second direction D2. Since the first signal line 301 and the second signal line 302 are completely disposed in the display area 10P and are not disposed in the transparent area 10T, the area of the transparent area 10T is not occupied, so the penetration area of the transparent area 10T is not caused. Reduced to maintain high penetration.

Please refer to Figure 9. Fig. 9 is a view showing a transparent display panel of a modified embodiment of the fourth embodiment of the present invention. As shown in FIG. 9, in the transparent display panel 4' of the modified embodiment, the sub-pixels are arranged in the same manner as the fourth embodiment, except that the first opening 24 is substantially a circular opening. Each of the first pixels 21, each of the second pixels 22, and each of the third pixels 23 is substantially a polygonal sub-pixel, for example, a rectangular rectangle. In addition, if the area of the first opening 24 is large, the edges or corners of the first pixel 21, the second pixel 22, and the third pixel 23 may be occupied by the first opening 24 to make the first The sub-pixel 21, the second pixel 22, and at least one side of the third pixel 23 contain a curve such that the shape is not a perfect rectangle. Additionally, the second opening 26 is located at an opening in the edge of the pixel array 20, and the second opening 26 of the present embodiment is substantially a semi-circular opening. The signal line 30 can include a plurality of first signal lines 301 extending substantially at least a portion of the pixels in the first direction D1, and the plurality of second signal lines 302 substantially along the second direction D2 Through at least a portion of the secondary pixels. Since the first signal line 301 and the second signal line 302 are completely disposed in the display area 10P and are not disposed in the transparent area 10T, the area of the transparent area 10T is not occupied, so the penetration area of the transparent area 10T is not caused. Reduced to maintain high penetration.

The sub-pixels of the pixel array of the transparent display panel of the present invention are not limited to the arrangement and configuration disclosed in the above embodiments, and can be appropriately changed and adjusted as long as the sub-pixels are in the first direction and the second direction. The upper lines are connected to each other, and the signal lines are disposed in the display area and covered by the light shielding layer of the display area without affecting the transmittance of the transparent area.

In summary, the signal line of the transparent display panel of the present invention is disposed in the display area and is not disposed in the transparent area, and does not occupy the area of the transparent area, so the transparent area is not reduced, so it is transparent. The transparent area of the display panel can have a high transmittance. In addition, since the light shielding layer is disposed in the display area, the signal line can be shielded without affecting the display function of the display area.

The above are only the preferred embodiments of the present invention, and all changes and modifications made to the scope of the present invention should be within the scope of the present invention.

1‧‧‧Transparent display panel

10‧‧‧Substrate

20‧‧‧ pixel array

30‧‧‧Signal line

10P‧‧‧ display area

10T‧‧‧Transparent Zone

21‧‧‧ first pixel

22‧‧‧ second pixel

23‧‧‧ Third pixel

24‧‧‧ first opening

D1‧‧‧ first direction

D2‧‧‧ second direction

Z‧‧‧Vertical projection direction

26‧‧‧second opening

301‧‧‧First signal line

302‧‧‧Second signal line

Claims (19)

A transparent display panel comprising: a substrate having a plurality of display areas and a plurality of transparent areas; a pixel array disposed on the substrate, the pixel array comprising a plurality of sub-pixels and a plurality of first openings, wherein The sub-pixels are connected to each other in a first direction and a second direction, and each of the sub-pixels overlaps with a corresponding display area, and each of the first openings is partially replaced. Surrounding the pixels, each of the first openings overlaps with a corresponding one of the transparent regions, and the second pixels are alternately arranged with the first openings; and a plurality of signal lines are disposed on the substrate and An equal-order pixel electrical connection, wherein the signal lines are disposed in the display areas along the display areas. The transparent display panel of claim 1, wherein the signal lines are disposed only in the display areas and are not disposed in the transparent areas. The transparent display panel of claim 1, wherein each of the first openings is completely surrounded by a portion of the sub-pixels to form a closed-type opening. The transparent display panel of claim 1, wherein each of the sub-pixels comprises: a driving component disposed on the substrate; and a light-emitting component disposed on the substrate and electrically connected to the driving component, wherein The light emitting element includes: a first electrode electrically connected to the driving element; a second electrode; and a display medium layer. The transparent display panel of claim 4, wherein the display medium layer comprises an organic light emitting layer. The transparent display panel of claim 4, wherein one of the first electrode and the second electrode is a reflective electrode. The transparent display panel of claim 1, wherein each of the sub-pixels comprises a light-shielding layer, and the signal lines are covered by the light-shielding layers of the sub-pixels. The transparent display panel of claim 1, wherein the pixel array further comprises a plurality of second openings, each of the second openings being partially surrounded by the sub-pixels to form an open-type opening, and each The second opening overlaps with a corresponding one of the transparent regions. The transparent display panel of claim 1, wherein the signal lines comprise a plurality of first signal lines substantially extending through at least a portion of the sub-pixels in the first direction, and the plurality of second signal lines substantially along The second direction extends through at least a portion of the sub-pixels. The transparent display panel of claim 1, wherein the sub-pixels comprise: a plurality of first pixels for displaying a first color image; and a plurality of second pixels for displaying a second color a color image; and a plurality of third pixels for displaying a third color image. The transparent display panel of claim 10, wherein each of the first openings is surrounded by four first-order pixels, four second-order pixels, and four third-order pixels. The transparent display panel of claim 11, wherein each of the first pixel and each of the third pixels is substantially an L-shaped sub-pixel, and each of the second pixels is substantially a rectangular sub-picture. And each of the first openings is substantially a cross-shaped opening. The transparent display panel of claim 11, wherein each of the first pixel and each of the third pixels is substantially an L-shaped sub-pixel, and each of the second pixels is substantially a polygon. And each of the first openings is substantially a circular opening. The transparent display panel of claim 10, wherein each of the first openings is surrounded by two first-order pixels, four second-order pixels, and two third-order pixels. The transparent display panel of claim 14, wherein each of the first pixel and each of the third pixels is substantially a trapezoidal sub-pixel, and each of the second pixels is substantially a rectangular sub-picture. And each of the first openings is substantially a circular opening. The transparent display panel of claim 10, wherein at least one of the first openings is surrounded by two first-order pixels, a second-order pixel, and a third-order pixel. The transparent display panel of claim 10, wherein each of the first openings is surrounded by two first-order pixels, two second-order pixels, and two third-order pixels. The transparent display panel of claim 17, wherein each of the first openings is substantially a circular opening. The transparent display panel of claim 17, wherein each of the first pixels, each of the second pixels, and each of the third pixels are substantially a polygon sub-pixel, and each of the first openings It is essentially a rectangular opening.