TWI732623B - Transparent dispay panel - Google Patents

Abstract

A transparent display panel is adapted rotate along an axis. The transparent display panel includes a transparent substrate and pixel structures disposed on the transparent substrate. Each of the pixel structures includes a pixel driving circuit and a light emitting diode element electrically connected to the pixel driving circuit. When a signal inputted to the pixel driving circuit of each of the pixel structures is substantially the same and the transparent display panel is at rest, a brightness of a middle region of the transparent display panel is less than a brightness of a peripheral region of the transparent display panel.

Description

Transparent display panel

The present invention relates to a display panel, and particularly relates to a transparent display panel.

A 3D holographic image display (3D holographic image display) includes a transparent display panel mounted on a rotating device. The rotating device can drive the transparent display panel to rotate around an axis. Using the principle of persistence of human vision, the rotating transparent display panel can provide the human eye with a three-dimensional holographic image.

The invention provides a transparent display panel with good performance.

The transparent display panel of the present invention is suitable for rotating around an axis. The transparent display panel includes a light-transmitting substrate and a plurality of pixel structures arranged on the light-transmitting substrate. The light-transmitting substrate has a middle area and a peripheral area, wherein the axis is located in the middle area, and the peripheral area is located between the middle area and the edge of the light-transmitting substrate. Each pixel structure includes a pixel driving circuit and a light emitting diode element electrically connected to the pixel driving circuit. The signal input to the pixel driving circuit of each pixel structure is substantially the same and at the transparent display panel In the static state, the brightness of the middle area of the transparent display panel is less than the brightness of the peripheral area of the transparent display panel.

10.10A: Three-dimensional holographic image display

100, 100A: transparent display panel

110: Transparent substrate

110-1: Middle area

110-2, 110-3: Surrounding area

110a: Edge

A: axis

d1, d2: direction

IM: Three-dimensional holographic image

LED, LED-1, LED-2, LED-3: light-emitting diode components

L1, L2: channel length

l1: first wire

l2: second wire

P: location

PX: Pixel structure

PC: Pixel drive circuit

R, x: distance

Tx, Tx-1, Tx-2, Tx-3: the first transistor

Txa, Tya: the first end

Txb, Tyb: second end

Txc, Tyc: control terminal

Ty, Ty-1, Ty-2, Ty-3: second transistor

W1, W2: channel width

FIG. 1 is a three-dimensional schematic diagram of a three-dimensional holographic image display 10 according to an embodiment of the present invention.

2 is a schematic top view of a three-dimensional holographic image display 10 according to an embodiment of the invention.

3 is a schematic front view of the transparent display panel 100 of the three-dimensional holographic image display 10 according to an embodiment of the present invention.

FIG. 4 shows an equivalent circuit diagram of a plurality of pixel structures PX of the transparent display panel 100 according to an embodiment of the present invention.

5A shows a schematic diagram of the layout of the first transistor Tx-1 of the pixel driving circuit PC of the first pixel structure PX according to an embodiment of the present invention.

5B shows a schematic diagram of the layout of the second transistor Ty-1 of the pixel driving circuit PC of the first pixel structure PX according to an embodiment of the present invention.

6A shows a schematic diagram of the layout of the first transistor Tx-2 of the pixel driving circuit PC of the second pixel structure PX according to an embodiment of the present invention.

6B shows a schematic diagram of the layout of the second transistor Ty-2 of the pixel driving circuit PC of the second pixel structure PX according to an embodiment of the present invention.

FIG. 7A shows the pixel driving circuit of the third pixel structure PX according to an embodiment of the present invention Schematic diagram of the layout of the first transistor Tx-3 of the PC.

FIG. 7B shows a schematic diagram of the layout of the second transistor Ty-3 of the pixel driving circuit PC of the third pixel structure PX according to an embodiment of the present invention.

FIG. 8 shows the relationship between the distance between a position P on the transparent display panel 100 and the axis A and the relative brightness of the transparent display panel 100 at the position P according to an embodiment of the present invention.

FIG. 9 shows the relationship between the distance between a position P and the axis A on the transparent display panel 100 and the relative brightness of the transparent display panel 100 at the position P according to an embodiment of the present invention.

FIG. 10 is a schematic top view of a three-dimensional holographic image display 10A according to an embodiment of the invention.

FIG. 11 is a schematic front view of a transparent display panel 100A of a three-dimensional holographic image display 10A according to an embodiment of the present invention.

Reference will now be made in detail to the exemplary embodiments of the present invention, and examples of the exemplary embodiments are illustrated in the accompanying drawings. Whenever possible, the same component symbols are used in the drawings and descriptions to indicate the same or similar parts.

It should be understood that when an element such as a layer, film, region, or substrate is referred to as being "on" or "connected to" another element, it can be directly on or connected to the other element, or Intermediate elements can also be present. In contrast, when an element is referred to as being "directly on" or "directly connected to" another element, there are no intervening elements. Pieces. As used herein, "connected" can refer to physical and/or electrical connection. Furthermore, "electrically connected" or "coupled" may mean that there are other elements between two elements.

As used herein, "about", "approximately", or "substantially" includes the stated value and the average value within the acceptable deviation range of the specific value determined by a person of ordinary skill in the art, taking into account the measurement in question and the A certain amount of measurement-related error (ie, the limitation of the measurement system). For example, "about" can mean within one or more standard deviations of the stated value, or within ±30%, ±20%, ±10%, ±5%. Furthermore, "about", "approximately" or "substantially" as used herein can be based on optical properties, etching properties or other properties to select a more acceptable range of deviation or standard deviation, and not one standard deviation can be applied to all properties .

Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by those of ordinary skill in the art to which the present invention belongs. It will be further understood that terms such as those defined in commonly used dictionaries should be interpreted as having meanings consistent with their meanings in the context of related technologies and the present invention, and will not be interpreted as idealized or excessive The formal meaning, unless explicitly defined as such in this article.

FIG. 1 is a three-dimensional schematic diagram of a three-dimensional holographic image display 10 according to an embodiment of the present invention.

2 is a schematic top view of a three-dimensional holographic image display 10 according to an embodiment of the invention.

Please refer to FIGS. 1 and 2, the three-dimensional holographic image display 10 includes a transparent display panel 100. The transparent display panel 100 is suitable for rotating around the axis A to Display the three-dimensional holographic image IM. Specifically, the transparent display panel 100 can be installed on a rotating device (not shown), and the rotating device can drive the transparent display panel 100 to rotate around the axis A. For example, in this embodiment, the rotating device may include a motor (not shown) and a bracket (not shown). The transparent display panel 100 is fixed on the bracket, the bracket is connected to the motor, and the motor drives the transparent display panel 100 through the bracket. Rotate around the axis A. However, the present invention is not limited to this. In other embodiments, the transparent display panel 100 may also be rotated around the axis A through other methods and/or devices.

3 is a schematic front view of the transparent display panel 100 of the three-dimensional holographic image display 10 according to an embodiment of the present invention.

FIG. 4 shows an equivalent circuit diagram of a plurality of pixel structures PX of the transparent display panel 100 according to an embodiment of the present invention.

FIG. 3 schematically depicts a plurality of light emitting diode elements LED of a plurality of pixel structures PX, and a pixel driving circuit PC of a plurality of pixel structures PX of FIG. 4 is omitted.

3 and 4, the transparent display panel 100 includes a light-transmitting substrate 110. The light-transmitting substrate 110 has a middle area 110-1 and peripheral areas 110-2 and 110-3. The axis A is located in the middle zone 110-1. The peripheral areas 110-2 and 110-3 are located between the middle area 110-1 and the edge 110 a of the transparent substrate 110. The transparent substrate 110 is used to carry the pixel structure PX. For example, in this embodiment, the material of the transparent substrate 110 may be glass. However, the present invention is not limited to this. In other embodiments, the material of the light-transmitting substrate 110 may also be quartz, organic polymer, or other light-transmitting materials.

The transparent display panel 100 also includes a plurality of pixel structures PX, which are arranged on the transparent On the substrate 110. Each pixel structure PX includes a pixel driving circuit PC and a light emitting diode element LED electrically connected to the pixel driving circuit PC.

For example, in this embodiment, the pixel driving circuit PC of each pixel structure PX may include a first transistor Tx and a second transistor Ty, wherein the first terminal Txa of the first transistor Tx is electrically connected Is electrically connected to the first electrode (not shown) of the light emitting diode element LED of the pixel structure PX, and the first terminal Tya of the second transistor Ty is electrically connected to the light emitting diode of the pixel structure PX The second electrode (not shown) of the body element LED, the control terminal Txc of the first transistor Tx is electrically connected to a first control line (not shown), and the first control line is electrically connected to the transparent display panel 100 In a driving circuit (not shown), the control terminal Tyc of the second transistor Ty is electrically connected to a second control line (not shown), and the second control line is electrically connected to all of the transparent display panel 100 In the driving circuit, the second terminal Txb of the first transistor Tx and the second terminal Tyb of the second transistor Ty are electrically connected to the first wire 11 and the second wire 12, respectively, and the first wire 11 and the The second wire 12 is electrically connected to the driving circuit of the transparent display panel 100.

The multiple light-emitting diode elements LED of the multiple pixel structure PX can be arranged in multiple rows and multiple columns, the multiple light-emitting diode elements LED in each column are arranged in the direction d1, and the multiple light-emitting diodes in each row The element LEDs are arranged in the direction d2, where the direction d1 and the direction d2 are staggered. In this embodiment, multiple light-emitting diode elements LED in the same row can share the same first transistor Tx, and multiple light-emitting diode elements LED in the same column can share the same second transistor Ty.

It should be noted that the structure of the pixel driving circuit PC described above is only for example. The present invention is illustrated and not used to limit the present invention; in other embodiments, the pixel driving circuit PC may also adopt other architectures.

3 and 4, it is worth noting that the signal input to the pixel driving circuit PC of each pixel structure PX is substantially the same, and when the transparent display panel 100 is in a static state, the middle area of the transparent display panel 100 The brightness of 110-1 is smaller than the brightness of the peripheral areas 110-2 and 110-3 of the transparent display panel 100.

That is to say, during the period when the driving circuit is to make the transparent display panel 100 display a completely white screen, when the transparent display panel 100 is stationary, it can be measured that the brightness of the middle area 110-1 of the transparent display panel 100 is greater than The brightness of the peripheral areas 110-2 and 110-3 of the transparent display panel 100. Thereby, when the transparent display panel 100 rotates around the axis A, the more integral effect of the human eyes on the middle region 110-1 and the lower brightness of the middle region 110-1 can complement each other, and the human eyes on the peripheral region 110- 2. The less integral effect of 110-3 is complementary to the higher brightness of the peripheral areas 110-2 and 110-3, so that the human eye can see a stereo holographic image with uniform brightness.

For example, in this embodiment, during the period when the driving circuit is to make the transparent display panel 100 display a full white screen, input to the second ends Txb of the first transistors Tx of the plurality of pixel structures PX The signals input to the plurality of control terminals Txc of the plurality of first transistors Tx of the plurality of pixel structures PX are substantially the same, and the signals input to the plurality of second transistors Ty of the plurality of pixel structures PX are substantially the same. The signals of the two second terminals Tyb are substantially the same, and the signals input to the control terminals Tyc of the plurality of second transistors Ty of the plurality of pixel structures PX are substantially the same; at this time, the transparent display panel 100 in a static state The brightness of the middle area 110-1 will be smaller than the surrounding area The brightness of 110-2, 110-3.

There are many design methods that can make the signal input to the pixel driving circuit PC of each pixel structure PX substantially the same, and the brightness of the middle area 110-1 of the transparent display panel 100 in a static state is smaller than that of the peripheral area 110- 2. The brightness of 110-3 is illustrated below with examples.

Please refer to FIG. 3, the peripheral areas 110-2 and 110-3 of the transparent substrate 110 include a peripheral area 110-2 and a peripheral area 110-3. The peripheral area 110-2 is located between the middle area 110-1 and the peripheral area 110-3. The peripheral area 110-3 is located between the peripheral area 110-2 and the edge 110 a of the transparent substrate 110. The peripheral area 110-3 is farther from the axis A than the peripheral area 110-2. 3 and 4, the plurality of pixel structures PX of the transparent display panel 100 includes a first pixel structure PX, a second pixel structure PX, and a third pixel structure PX. The first pixel structure PX emits two The pole element LED-1 is arranged in the middle area 110-1, the light emitting diode element LED-2 of the second pixel structure PX is arranged in the peripheral area 110-2, and the light emitting diode element of the third pixel structure PX The LED-3 is arranged in the peripheral area 110-3.

5A shows a schematic diagram of the layout of the first transistor Tx-1 of the pixel driving circuit PC of the first pixel structure PX according to an embodiment of the present invention. 5B shows a schematic diagram of the layout of the second transistor Ty-1 of the pixel driving circuit PC of the first pixel structure PX according to an embodiment of the present invention.

6A shows a schematic diagram of the layout of the first transistor Tx-2 of the pixel driving circuit PC of the second pixel structure PX according to an embodiment of the present invention. 6B shows a schematic diagram of the layout of the second transistor Ty-2 of the pixel driving circuit PC of the second pixel structure PX according to an embodiment of the present invention.

FIG. 7A shows a schematic diagram of the layout of the first transistor Tx-3 of the pixel driving circuit PC of the third pixel structure PX according to an embodiment of the present invention. FIG. 7B shows a schematic diagram of the layout of the second transistor Ty-3 of the pixel driving circuit PC of the third pixel structure PX according to an embodiment of the present invention.

4, 5A, 6A, and 7A, the first transistor Tx of the pixel driving circuit PC of each pixel structure PX includes a channel Txd, and the two different regions of the channel Txd are respectively connected to the first transistor The first terminal Txa and the second terminal Txb of Tx are electrically connected. The first transistor Tx has a channel width-to-length ratio W1/L1, where W1 is the width of the channel Txd, and L1 is the length of the channel Txd.

Please refer to FIG. 3, FIG. 4, FIG. 5A, FIG. 6A and FIG. 7A. In this embodiment, the first transistor Tx-1 is electrically connected to the light emitting diode element LED-1 located in the middle region 110-1. The channel width-to-length ratio W1/L1 is smaller than the channel electrically connected to the first transistors Tx-2, Tx-3 of the light-emitting diode elements LED-2, LED-3 in the peripheral area 110-2, 110-3 The aspect ratio is W1/L1.

Furthermore, in this embodiment, the channel width-to-length ratio W1/L1 of the first transistor Tx-1 electrically connected to the light-emitting diode element LED-1 located in the middle region 110-1 is smaller than that of the electrical connection The channel width to length ratio of the first transistor Tx-2 to the light emitting diode element LED-2 located in the peripheral area 110-2 is W1/L1, and the channel width to length ratio of the light emitting diode element LED-2 located in the peripheral area 110-2 The channel width-to-length ratio W1/L1 of the first transistor Tx-2 is smaller than the channel width-to-length ratio W1/L1 of the first transistor Tx-3 which is electrically connected to the light emitting diode element LED-3 located in the peripheral area 110-3. L1.

In short, in this embodiment, the first transistor of each pixel structure PX The channel width-to-length ratio W1/L1 of Tx will gradually increase as the LED of the pixel structure PX moves away from the axis A.

4, 5B, 6B, and 7B, the second transistor Ty of the pixel driving circuit PC of each pixel structure PX includes a channel Tyd, and the two different regions of the channel Tyd are respectively connected to the second transistor The first end Tya and the second end Tyb of Ty are electrically connected. The second transistor Ty has a channel width-to-length ratio W2/L2, where W2 is the width of the channel Tyd, and L2 is the length of the channel Tyd.

Please refer to FIG. 3, FIG. 4, FIG. 5B, FIG. 6B and FIG. 7B. In this embodiment, the second transistor Ty-1 is electrically connected to the light emitting diode element LED-1 in the middle region 110-1. The channel width-to-length ratio W2/L2 is smaller than the channel width and length of the second transistors Ty-2, Ty-3 electrically connected to the light-emitting diode elements LED-2, LED3 in the peripheral area 110-2, 110-3 Than W2/L2.

Furthermore, in this embodiment, the channel width-to-length ratio W2/L2 of the second transistor Ty-1 electrically connected to the light-emitting diode element LED-1 located in the middle region 110-1 is smaller than that of the electrical connection The channel width to length ratio of the second transistor Ty-2 to the light emitting diode element LED-2 located in the peripheral area 110-2 is W2/L2, and the channel width to length ratio of the light emitting diode element LED-2 located in the peripheral area 110-2 The channel width-to-length ratio W2/L2 of the second transistor Ty-2 is smaller than the channel width-to-length ratio W2/L2 of the second transistor Ty-3 electrically connected to the light-emitting diode element LED-3 located in the peripheral area 110-3 L2.

In short, in this embodiment, a channel width-to-length ratio W2/L2 of the second transistor Ty of each pixel structure PX gradually increases as the light-emitting diode element LED of the pixel structure PX moves away from the axis A increase.

Since the channel width-to-length ratio W1/L1 of the first transistor Tx-1 electrically connected to the light emitting diode element LED-1 located in the middle area 110-1 is smaller than that of electrically connected to the peripheral areas 110-2, 110- 3. The channel width to length ratios of the first transistors Tx-2 and Tx-3 of the light-emitting diode elements LED-2 and LED-3 are W1/L1, and/or are electrically connected to the light emitting in the middle area 110-1 The channel width-to-length ratio W2/L2 of the second transistor Ty-1 of the diode element LED-1 is smaller than that of the light-emitting diode elements LED-2 and LED- which are electrically connected to the peripheral areas 110-2 and 110-3. The channel width-to-length ratio of the second transistors Ty-2 and Ty-3 of 3 is W2/L2. Therefore, when the signal input to the pixel driving circuit PC of each pixel structure PX is substantially the same, it passes through the light emitting diode The current of the body element LED-1 will be less than the current passing through the light-emitting diode elements LED-2 and LED-3, and the light-emitting diode element LED-1 located in the middle area 110-1 will have a lower luminous brightness than the peripheral area 110- 2. The light-emitting brightness of the light-emitting diode elements LED-2 and LED3 of 110-3 is such that the brightness of the middle area 110-1 of the transparent display panel 100 is smaller than that of the peripheral areas 110-2, 110-3 of the transparent display panel 100 brightness.

FIG. 8 shows the relationship between the distance between a position P (marked in FIG. 3) and the axis A (marked in FIG. 3) on the transparent display panel 100 and the relative brightness of the transparent display panel 100 at the position P according to an embodiment of the present invention .

，其中R為軸線A與最靠近基板110邊緣110a之一發光二極體元件LED在方向d1上的距離，x為軸線A與周邊區110-2、110-3之一位置P在方向d1上的距離，且方向d1垂直於軸線A。 Please refer to FIG. 2, FIG. 3, FIG. 4, and FIG. 8. The signal input to the pixel driving circuit PC of each pixel structure PX is substantially the same, and when the transparent display panel 100 is in a stationary state, the transparent display panel 100 is The brightness on the axis A is L _A , the brightness of one position P of the peripheral area 110-2 and 110-3 of the transparent display panel 100 is L _x , and L _A and L _x satisfy the following formula:

, Where R is the distance between the axis A and the light-emitting diode element LED closest to the edge 110a of the substrate 110 in the direction d1, and x is the axis A and one of the peripheral regions 110-2, 110-3. The position P is in the direction d1 , And the direction d1 is perpendicular to the axis A.

2 and 3, in this embodiment, the transmittance of the middle area 110-1 of the transparent display panel 100 is greater than the transmittance of the peripheral areas 110-2 and 110-3 of the transparent display panel 100. The transmittance of the middle area 110-1 and the peripheral areas 110-2, 110-3 of the transparent display panel 100 mentioned above can refer to the penetration measured when the light emitting diode element LED of the transparent display panel 100 is not lit. Transmittance.

When the light-emitting diode element LED of the transparent display panel 100 is not lit, and the transparent display panel 100 rotates around the axis A, the human eye has more integral effect on the middle area 110-1 and the middle area 110-1 The higher penetration rate can complement each other, and the less integral effect of the human eye on the peripheral areas 110-2 and 110-3 and the lower penetration rate of the peripheral areas 110-2 and 110-3 can complement each other, thereby enhancing the three-dimensionality The transmittance of the holographic image display 10 is uniform.

For example, in this embodiment, the layout of the pixel structure PX provided in the middle area 110-1 can be designed to be different from the layout of the pixel structure PX in the peripheral areas 110-2 and 110-3 ( For example: the area of the shading member of the pixel structure PX located in the middle area 110-1 can be designed to be smaller), so that the transmittance of the middle area 110-1 of the transparent display panel 100 is greater than that of the peripheral area of the transparent display panel 100 The penetration rate of 110-2 and 110-3, but the present invention is not limited to this.

In this embodiment, the transmittance of the middle area 110-1 of the transparent display panel 100 is greater than the transmittance of the peripheral area 110-2 of the transparent display panel 100, and the transmittance of the peripheral area 110-2 of the transparent display panel 100 The transmittance rate is greater than the transmittance rate of the peripheral area 110-3 of the transparent display panel 100. In short, in this embodiment, the transmittance of a position P of the transparent display panel 100 will gradually decrease as the position P moves away from the axis A.

9 shows the relationship between the distance between a position P (marked in FIG. 3) and the axis A (marked in FIG. 3) on the transparent display panel 100 and the relative brightness of the transparent display panel 100 at the position P according to an embodiment of the present invention .

2, 3 and 9, when the light-emitting diode element LED of the transparent display panel 100 is not lit, the transmittance of the transparent display panel 100 on the axis A is T _A , which is higher than that of the transparent display panel 100 The penetration rate of P at one of the peripheral regions 110-2 and 110-3 is T _x , and T _A and T _x satisfy the following formula: T _x = T _A. cos ² ( x / R ), where R is the distance between the axis A and the light-emitting diode element LED closest to the edge 110a of the substrate 110 in the direction d1, and x is the distance between the axis A and the peripheral regions 110-2, 110-3 The distance of a position P in the direction d1, and the direction d1 is perpendicular to the axis A.

It must be noted here that the following embodiments use the element numbers and part of the content of the foregoing embodiments, wherein the same numbers are used to represent the same or similar elements, and the description of the same technical content is omitted. For the description of the omitted parts, reference may be made to the foregoing embodiments, and the following embodiments will not be repeated.

FIG. 10 is a schematic top view of a three-dimensional holographic image display 10A according to an embodiment of the invention.

FIG. 11 is a schematic front view of a transparent display panel 100A of a three-dimensional holographic image display 10A according to an embodiment of the invention.

The three-dimensional holographic image display 10A of this embodiment is similar to the above-mentioned three-dimensional holographic image display 10. The main difference between the two is: the arrangement of multiple light-emitting diode elements LEDs of the transparent display panel 100A and the multiple of the transparent display panel 100 The arrangement of the light-emitting diode element LED is different.

10 and 11, in this embodiment, the arrangement density of the multiple light-emitting diode elements LED in the middle area 110-1 is lower than that of the multiple light-emitting diode elements LED in the peripheral areas 110-2, 110-3 The setting density. Therefore, even if the channel width-to-length ratio W1/L1 of the plurality of first transistors Tx of the pixel driving circuit PC of the plurality of light-emitting diode elements LED is the same (refer to FIG. 4, FIG. 5A), and the plurality of light-emitting diodes The channel width-to-length ratio W2/L2 of the multiple second transistors Ty of the pixel drive circuit PC of the polar element LED is the same (refer to Figure 4 and Figure 5B), when input to the pixel drive of each pixel structure PX When the signals of the circuit PC (refer to FIG. 4) are substantially the same, the brightness of the middle area 110-1 of the transparent display panel 100A in the static state can also be smaller than the brightness of the peripheral areas 110-2 and 110-3.

In this embodiment, the arrangement density of the multiple light-emitting diode elements LED in the middle area 110-1 is less than the arrangement density of the multiple light-emitting diode elements LED in the peripheral area 110-2, and the multiple light-emitting diode elements The arrangement density of the LEDs in the peripheral area 110-2 is lower than the arrangement density of the plurality of light-emitting diode elements LEDs in the peripheral area 110-3. In short, in this embodiment, the arrangement density of the multiple light-emitting diode elements LED gradually increases as it moves away from the axis A.

The three-dimensional holographic image display 10A has similar functions and advantages to the above-mentioned three-dimensional holographic image display 10, which will not be repeated here.

10: Three-dimensional holographic image display

100: Transparent display panel

A: axis

IM: Three-dimensional holographic image

Claims (9)

A transparent display panel suitable for rotating around an axis, the transparent display panel comprising: a light-transmitting substrate, having a middle area and a peripheral area, wherein the axis is located in the middle area, and the peripheral area is located in the middle area and Between the edges of the light-transmitting substrate; and a plurality of pixel structures are disposed on the light-transmitting substrate, wherein each of the pixel structures includes a pixel driving circuit and a light emitting device electrically connected to the pixel driving circuit A diode element; the signal input to the pixel driving circuit of each pixel structure is substantially the same, and when the transparent display panel is in a static state, the brightness of the middle area of the transparent display panel is less than that of the transparent display The brightness of the peripheral area of the panel; the brightness of the transparent display panel on the axis is L _A , the brightness of a position of the peripheral area of the transparent display panel is L _x , and L _A and L _x satisfy the following formula:

, Where R is the distance between the axis and the light-emitting diode element closest to the edge of the substrate in a direction, and x is the distance between the axis and the position of the peripheral area in the direction, and the direction is perpendicular On the axis. The transparent display panel according to claim 1, wherein the pixel driving circuit of each pixel structure includes a first transistor; the pixel structures include a first pixel structure and a second pixel structure , The light-emitting diode of the first pixel structure The body element is arranged in the middle area, the light emitting diode element of the second pixel structure is arranged in the peripheral area; the width and length of a channel of the first transistor of the pixel driving circuit of the first pixel structure The ratio is smaller than a channel width to length ratio of the first transistor of the pixel driving circuit of the second pixel structure. The transparent display panel according to claim 1, wherein the pixel driving circuit of each pixel structure includes a first transistor, and a channel aspect ratio of the first transistor of the pixel structure increases with The light-emitting diode elements of the pixel structure gradually increase away from the axis. The transparent display panel according to claim 1, wherein the arrangement density of the light-emitting diode elements of the pixel structures in the middle area is less than that of the light-emitting diode elements of the pixel structures in the peripheral area The setting density. The transparent display panel according to claim 1, wherein the arrangement density of the light-emitting diode elements of the pixel structures gradually increases as they move away from the axis. The transparent display panel according to claim 1, wherein the transmittance of the middle area of the transparent display panel is greater than the transmittance of the peripheral area of the transparent display panel. The transparent display panel according to claim 1, wherein the transmittance of a position of the transparent display panel gradually decreases as the position moves away from the axis. The transparent display panel according to claim 1, wherein the transmittance of the transparent display panel on the axis is T _A , and the transmittance of a position of the peripheral area of the transparent display panel is T _x , T _A And T _x satisfies the following formula: T _x = T _A. cos ² ( x / R ), where R is the distance between the axis and the light-emitting diode element closest to the edge of the substrate in a direction, and x is the axis and the position of the peripheral area in the direction , And the direction is perpendicular to the axis. A transparent display panel suitable for rotating around an axis. The transparent display panel includes: a light-transmitting substrate with a middle area and a peripheral area, wherein the axis is located in the middle area, and the peripheral area is located in the middle area and the peripheral area. Between the edges of the light-transmitting substrate; and a plurality of pixel structures are disposed on the light-transmitting substrate, wherein each of the pixel structures includes a pixel driving circuit and a light emitting circuit electrically connected to the pixel driving circuit Diode elements, and a plurality of light-emitting diode elements of the pixel structures are arranged on the middle area and the peripheral area of the light-transmitting substrate; input to the pixel driving circuit of each pixel structure The signal is substantially the same, and when the transparent display panel is in a static state, the brightness of the middle area of the transparent display panel is less than the brightness of the peripheral area of the transparent display panel; wherein the penetration of the middle area of the transparent display panel The rate is greater than the transmittance of the peripheral area of the transparent display panel.

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