Transparent display device

A transparent display device includes a pixel region, a first transparent region and a second transparent region. The pixel region includes at least three sub-pixels arranged along a direction. The first transparent region and the second transparent region are disposed along the direction and the pixel region is disposed between the first transparent region and the second transparent region. The first transparent region has a first width in maximum along the direction. One of the at least three sub-pixels has a second width in maximum along the direction, and the first width is different from the second width.

BACKGROUND

1. Field of the Disclosure

The disclosure is related to display device, and particularly related to transparent display device.

2. Description of Related Art

In operation of the transparent display device, an image may be normally displayed to a user by the transparent display device. However, the transparent display device contains a transparent part and then the ambient background of the transparent display device may still be seen by the user. The transparent display device in design includes a transparent part to allow the light of background to transmit through at the same time, so that the user may see both the image and the background scene at the same time. In this situation, a portion of the background scene behind the transparent display device may not be blocked by the transparent display device.

To control the pixels, the transparent display device still needs data lines and gate lines control the pixels to display the image. The light from background would transmit through the transparent part, which is conventionally implemented in each pixel. When the pixel size is reduced, the light from background may be diffracted by the data lines and gate lines or even the black matrix. As a result, the visual image through the transparent part may get blur caused by diffraction.

Reducing the blur effect of the transparent display device is at least one of the factors to be improved as the development of the transparent display device is continuously proceed.

SUMMARY

The disclosure provides a transparent display device, in which the transparent part is implemented to reduce the diffraction effect.

In an embodiment, the disclosure provides a transparent display device including a pixel region, a first transparent region and a second transparent region. The pixel region includes at least three sub-pixels arranged along a direction. The first transparent region and the second transparent region are disposed along the direction and the pixel region is disposed between the first transparent region and the second transparent region. The first transparent region has a first width in maximum along the direction. One of the at least three sub-pixels has a second width in maximum along the direction, and the first width is different from the second width.

In an embodiment, the disclosure provides a transparent display device, including a unit region. The unit region includes at least two sub-pixels arranged along a direction. A first transparent region is adjacent to the at least two sub-pixels. The first transparent region has a first width in maximum along the direction. A second transparent region is disposed between the at least two sub-pixels. The second transparent region has a second width in minimum along the direction. The second width is smaller than the first width.

In an embodiment, the disclosure provides a transparent display device, including at least two first regions and at least two pixel regions. Each of the at least two first regions includes at least three transparent regions. Each of the at least two pixel regions includes at least three sub-pixels. The at least two first regions and the at least two pixel regions are arranged alternately along a first direction and a second direction. The first direction is different from the second direction.

DESCRIPTION OF THE EMBODIMENTS

The disclosure is related to a transparent display device, in which the transparent region is provided to at least reducing the visual effect caused by diffraction from non-transparent parts in the pixel array, such data lines or gate lines, or even the black matrix.

Several embodiments are provided as the disclosure, but the disclosure is not just limited to the embodiments. In addition, the disclosure also allows a suitable combination between the embodiments as provided. In addition, the expressions “an element overlying another element”, “an element is disposed above another element”, “an element is disposed on another element” and “an element is disposed over another element” may indicate that the element is in direct contact with the other element, or that the element is not in direct contact with the other element, there being one or more intermediate elements disposed between the element and the other element.

FIG. 1is a drawing, schematically illustrating a basic pixel structure of a transparent display device. The disclosure has firstly looked into the basic pixel structure of a transparent display device. Referring toFIG. 1, a basic pixel structure of a transparent display device in an example may include a pixel region100and a transparent region104. A pixel region100may include a sub-pixel comprising a data line50and a gate line52, a transistor56, a color filter57and a pixel electrode102. In some embodiment, the pixel region can comprise at least three sub pixels. In addition, the transparent device further comprises a black matrix54may dispose over the data line50, the gate line52, or transistor56. Generally as an example, the data line50and the gate line52may define a region, including a pixel region100and a transparent region104. In some embodiment, the transparent region is defined by the data line50, gate line and black matrix54without the pixel region100. Generally, a transparent display device may further include a backlight source. The backlight source may be light-emitting diode (LED) in an example. In some embodiments, the light-emitting diode in an example may include organic light-emitting diode (OLED), quantum dot light-emitting diode (QLED), mini light-emitting diode (mini LED) or micro light-emitting diodes (micro LED), but not just limited thereto. The transparent display device may include a plurality of the basic pixel structures1, in which a the color filters57in the basic pixel structures1may be red, green or blue. In further embodiments, the color filters57may be same color. However, the disclosure is not just limited to the embodiments.

The transparent region104in the transparent display device allows the light from background to pass through. As a result, a user may see both the image as displayed and a portion of the background behind the transparent display device.

The structure of the transparent region104would determine the quality of the background scene as seen. The issue about the transparent region104should be looked into. Then, the blur effect of the background scene may be reduced by modifying the configuration of the transparent region.

In considering the performance of the transparent display device, a diffraction effect in viewing the background needs to be concerned. The diffraction effect may be large in conventional structure, causing non-negligible blur effect.

FIG. 2is a drawing, schematically illustrating the transparent region in a pixel array of a transparent display device, according to an embodiment of the disclosure. Referring toFIG. 2, as to the region150, the pixel region152with the two transparent regions154,156are arranged along the direction D1, as indicated by dashed line. The pixel region152may include three sub-pixels152a,152b,152c, which is disposed between the transparent region154and another transparent region156. The drawing inFIG. 2is a top view of the color filter substrate in which a structure part60, may include thin film transistor and other actual elements disposed on the TFT substrate, but is not shown in the present schematic diagram. As also noted, the thin film transistor and the color filter62may be at the same side or different side of the device substrate. A region150in an embodiment referring to the pixel region152and the two transparent regions154,156, as indicated by dashed line, is taken for description. A pitch A between the transparent region154and the transparent region156in an embodiment may be a minimum distance from a center point of the transparent region154to a center point of the transparent region156along the direction D1. In an embodiment, the sub-pixel152a,152b,152cmay have a first width w1along the direction D1. The transparent region154and the transparent region156may have the second width w2along the direction D1.FIG. 5would further describe the first width w1and the second width w2. Alternatively, a pitch A between the transparent region154and the transparent region156in an embodiment may be a distance from a reference point at an edge such as the upper edge of the transparent region154to a same reference point at an edge such as the upper edge of the transparent region156along the direction D1. The pitch A between the transparent region154and the transparent region156is increased in the disclosure. The black matrix54may cover the data line, the gate line, and the thin film transistor. However, in some embodiment, the implementation of black matrix54may partially cover over a portion of the device elements of gate line, data line, driving transistor, pixel electrode, and so on without specific limitation.

The black matrix54may selectively arrange or not arrange according to the requirement. The disclosure may increase the pitch A between the adjacent two transparent regions154and156to reduce the interference and improve display quality. In addition, the disclosure is not limited to the implementation of the black matrix54as described.

The forgoing disclosure of embodiments is based on the drawing as an example. However, the disclosures in the other embodiments and drawings with the features described above may also fall into the protection scope of the forgoing disclosure.

FIG. 3is a drawing, schematically illustrating the pixel structure corresponding to the pixel array inFIG. 2, according to an embodiment of the disclosure. Referring toFIG. 3, just a portion of the black matrix54is shown to optionally cover the device element, such as the gate lines52. In an embodiment, two adjacent gate lines52are covered by the thicker black matrix54. Likewise, the data line50may also be covered by another portion of the black matrix54. In addition, the region53between the two color filters62or between the transparent region154and the color filter62may be or may not be implemented with the black matrix. In other words, the black matrix54may be selectively formed at the location according to the requirement without specific limitation. In an embodiment, two adjacent data lines50, a gate line52and a black matrix may define a region as a pixel region152. In addition, the transparent region154in an embodiment may be defined by two adjacent data line50, the region53, at which the black matrix54may or may not be implemented, and a gate line (not shown in theFIG. 3). On the other hand, the black matrix describe in this embodiment is used to describe the corresponding position to the TFT side substrate. The black matrix54could be disposed on the color filter substrate or TFT substrate, but not limited thereto. The above-mentioned description of the black matrix54may also be applied to other embodiments under the similar schematic diagrams, which will not be redundantly repeated.

To see the diffraction effect is reduced by increasing the pitch of transparent region, the theoretic base is provided.FIG. 4is a drawing, schematically illustrating a diffraction effect, according to an embodiment of the disclosure. Referring toFIG. 4, the diffraction mechanism are shown, corresponding to a smaller pitch “a” and a larger pitch “A” between two transparent regions. The diffraction effect190with pitch “a” should satisfy a diffraction condition in optical theory:
a·sin θ=λ,
where θ is the diffraction angle and λ is the wavelength. The diffraction effect192with larger pitch “A” in optical theory for the right part inFIG. 4is
A·sin θ′=λ.

To the given wavelength λ, the pitch “A” is larger than the pitch a, then the diffraction angle θ′ for the pitch “A” is reduced. This implies that the diffraction angle θ′ for the 1storder diffraction pattern, causing blur effect, is more approaching to 0 degree, which is referring to the normal direction N. The blur effect causing by diffraction may be reduced.

The disclosure may increase the pitch, such as the larger pitch “A”, between the adjacent two transparent regions154,156.

FIG. 5is a drawing, schematically illustrating the transparent region in a pixel array of a transparent display device, according to an embodiment of the disclosure. Referring toFIG. 5, a further application in an embodiment that four sub-pixels152a,152b,152c,152dare arranged along the direction D1. In an embodiment, the four sub-pixels152a,152b,152c,152darranged along the direction D1may form as a pixel region152.

As to sizes or the width along the direction D1, the transparent regions154and156in sizes or shapes may be same or different. The pitch A between the transparent regions154and156is increased when four sub-pixels152a,152b,152c,152dare arranged together in an embodiment. However, the black matrix can be selectively arranged according to the actual design, without limited to the specific configuration. The disclosure is not limited to the embodiments.

As to configuration in the embodiments, one of the transparent regions154,156has a first width w1in maximum along the direction D1and one of the at least three sub-pixels152a,152b. . . has a second width w2in maximum along the direction D1. The first width w1is different from the second width w2. The second width w2in an embodiment may refer to the width of one sub-pixel152a,152b. However, the second width w2in an embodiment may refer to a width by averaging a distance between two adjacent sides of the adjacent two transparent regions154,156along the direction D1by the number of the sub-pixels152a,152b. . . disposed in this distance along the direction D1.

In an embodiment, as to the transparent display device, a ratio of the first width w1to the second width w2is greater than or equal to 0.01 and less than 1. In another embodiment, a ratio of the first width w1to the second width w2is greater than 1 and less than or equal to 200, but the disclosure is limited to this ratio.

In an embodiment, as to the transparent display device, the transparent region154and the transparent region156are same size or the transparent region156is longer than the transparent region154along the direction D1.

In an embodiment, as to the transparent display device, the pixel region152includes at least three sub-pixels, such as three sub-pixels152a,152b,152cinFIG. 2or four sub-pixels152a,152b,152c,152dinFIG. 5, or even more, without specific limitation. In some embodiment, it further comprises another transparent region (not shown in the figure) disposed between the any two of the at least three sub-pixels along the direction (D1).

In an embodiment, as to the transparent display device, the transparent regions154,156are a permanent transparent region or a transparent region under switching control. The permanent transparent region in an embodiment may be transparent material. However, some materials may have the non-transparent state but can be switched to transparent state under control by apply a bias. In other words, the disclosure may form the transparent region according to the actual design. In some embodiment, the transparent region may include or does not include the pixel electrode. If the pixel electrode is included in the transparent region, it can be applied with an operation voltage to be normally white, which is at the transparent state.

In an embodiment, as to the transparent display device, it may further comprise another transparent region disposed between the sub-pixels in the at least two sub-pixels.FIG. 6is a drawing, schematically illustrating the transparent region with another transparent region in a pixel array of a transparent display device, according to an embodiment of the disclosure.

The forgoing disclosure of embodiments is based on the drawing as an example. However, the disclosures in the other embodiments and drawings with the features described above may also fall into the protection scope of the forgoing disclosure.

Referring toFIG. 6, in an embodiment, the transparent display device in an embodiment may include a unit region200. The unit region200includes a first transparent region202and at least two sub-pixels152a,152barranged along the direction D1adjacent to the first transparent region202. The unit region200may optionally further comprise a second transparent region204disposed between the at least two sub-pixels152a,152b. Thus, in an embodiment ofFIG. 6, the unit region200sequentially comprises a sub-pixel152a, a second transparent region204, a sub-pixel152band a first transparent region202along the direction D1. The first transparent region202has a third width w3in maximum along the direction D1. The second transparent region204has a fourth width w4in minimum along the direction D1. The fourth width w4of the second transparent region204is smaller than the third width w3of the first transparent region202. In an embodiment, a ratio R of the fourth width w4of the second transparent region204to the third width w3of the first transparent region202is in a range of 0<R≤0.5. In an embodiment, the unit region may refer to a minimum unit, which is repeated in the pixel array. In an embodiment, the at least two sub-pixels152a,152bhas a width w′ in a maximum along the direction D1. A ratio of the third width w3to the width w′ is greater than or equal to 0.01 and less than 1. In another embodiment, a ratio of the third width w3to the width w′ is greater than 1 and less than or equal to 200, but the disclosure is limited to this ratio. The width w′ in an embodiment may refer to a distance between two adjacent sides of the first transparent region202and the second transparent region204along the direction D1.

In an embodiment, the direction D1is substantially parallel to the extending direction of data line. In another embodiment, the direction D1is crossed to the extending direction of the gate line. Herein, the direction D1and the extending direction of the gate line are different. For example, the direction D1may be perpendicular to the extending direction of the gate line or an angle (such as 75-90 degrees or 80-90 degrees) is included between the direction D1and the extending direction of the gate line, but not just limited thereto.

The diffraction effect from the second transparent region204with narrow width may provide the additional diffraction effect, which may reduce the interference between two larger first transparent regions202. As a result, the intensity of the diffraction pattern may be reduced to further reduce the blur effect. In addition, the pitch A described as the embodiment of theFIG. 2between two adjacent first transparent region202arranged along the direction D1may increase. The diffraction effect is reduced by increasing the pitch A of transparent region.

FIG. 7is a drawing, schematically illustrating a diffraction effect, according to an embodiment of the disclosure. Referring toFIG. 7, the diffraction effect194form the first transparent regions202is shown. The diffraction effect198form the first transparent regions202with the second transparent region204is also shown. In optical behaviour, the beam passing the second transparent region204in narrow width may produce additional wave bottom in intensity to cause a subtraction effect to the wave peak. Thus, the blur effect in the diffraction effect198may be reduced in which the arrangement of the first transparent region202and the second transparent region204is shown, for example, inFIG. 6.

The forgoing disclosure of embodiments is based on the drawing as an example. However, the disclosures in the other embodiments and drawings with the features described above may also fall into the protection scope of the forgoing disclosure.

FIG. 8is a drawing, schematically illustrating the first region and the pixel region are arranged alternately along the direction D1and the direction D2in a pixel array of a transparent display device, according to an embodiment of the disclosure.

Referring toFIG. 8, another configuration on the transparent region and the pixel region in an embodiment is further provided. A transparent display device includes at least two first regions160and at least two pixel regions162. Each of the at least two first regions160includes at least three transparent regions, such as three transparent regions in an embodiment. Each of the at least two pixel regions162includes at least three sub-pixels such as three sub-pixels in an embodiment. The at least two first regions160and the at least two pixel regions162are arranged alternately along the direction D1and the direction D2. The direction D1is different from the direction D2. In an embodiment, the first regions160and the pixel regions162along the direction D1and the second direction D2are alternately and adjacently disposed. The first regions160along the direction D1and the second direction D2are not adjacently disposed. In an embodiment, a pixel region162is disposed between adjacent two first regions160along the direction D1and the second direction D2. Likewise, a first region160is disposed between adjacent two pixel regions162along the direction D1and the second direction D2.

In some embodiment, the width of the first regions160and the width of the pixel regions162along the direction D1are equal. The width of the regions160and the width of the pixel regions162along the direction D2are equal. The pixel region162in an embodiment forms a full pixel. The pixel region162may include other sub-pixel in other compensating color depending on the actual design. In another embodiment, the at least two pixel regions162comprises six sub-pixels, but not just limited thereto. In some embodiment, transparent display device further comprises another transparent region (not shown inFIG. 8) which is disposed between two of the at least three sub pixels along the direction D1. The arrangement can refer to theFIG. 9and theFIG. 9would further describe in the following. In addition, the pitch A described as the embodiment of theFIG. 2between two adjacent transparent regions arranged along the direction D1may increase. The diffraction effect is reduced by increasing the pitch A of transparent region.

The forgoing disclosure of embodiments is based on the drawing as an example. However, the disclosures in the other embodiments and drawings with the features described above may also fall into the protection scope of the forgoing disclosure.

FIG. 9is a drawing, schematically illustrating with another transparent region in a pixel array of a transparent display device, according to an embodiment of the disclosure. Referring toFIG. 9, as a modification from the structure inFIG. 6, in this embodiment of the disclosure may also include a unit region300which sequentially include a sub-pixel162a, a second transparent region204, a sub-pixel162band a first transparent region202along the direction D1. Another unit region300′ may also sequentially with reverse direction to the unit region300include a sub-pixel162a, a second transparent region204, a sub-pixel162band a first transparent region202. In an embodiment, the unit region300and the unit region300′ may be repeated by three to respectively form the first region160and the pixel region162, but not limited to. The embodiment in description is taking an example by using three unit regions300and the unit regions300′ to form the arrangement asFIG. 9. In addition, the pitch A described as the embodiment of theFIG. 2between two adjacent first transparent regions202arranged along the direction D1may increase. The diffraction effect is reduced by increasing the pitch A of transparent region.

The forgoing disclosure of embodiments is based on the drawing as an example. However, the disclosures in the other embodiments and drawings with the features described above may also fall into the protection scope of the forgoing disclosure.

FIG. 10is a drawing, schematically illustrating the pixel structure corresponding to the pixel array inFIG. 9, according to an embodiment of the disclosure. In fabrication, the pixel structure, taking the configuration inFIG. 9as an example, is shown with the data lines50and the gate line52. In an embodiment, the black matrix54may be additionally formed over the gate line52, thin film transistor and the data line50but not limit the disclosure.

In an embodiment, just a portion of the black matrix54is shown to optionally cover the gate lines52. To the pixel structure as fabricated, the data line50is also included. Likewise, the data line50may also be covered by another portion of the black matrix54. In other words, the black matrix54may be optionally formed at any location according to the requirement without specific limitation.

The forgoing disclosure of embodiments is based on the drawing as an example. However, the disclosures in the other embodiments and drawings with the features described above may also fall into the protection scope of the forgoing disclosure.

FIG. 11AandFIG. 11Bare drawings, schematically illustrating the transparent region with another transparent region in a pixel array of a transparent display device, according to an embodiment of the disclosure. Referring toFIG. 11A, the width of the first transparent region in the direction D2may be increased by including two sub-pixels along the direction D2. Generally, in an embodiment, a transparent display device includes a unit region170including a first transparent region172, a second transparent region176, a sub-pixel174aand a sub-pixel174b. The sub-pixels174aand the sub-pixel174barranged along the direction D2. In another embodiment, the unit region170may further comprises at least two sub-pixels174a,174b. The first direction D1is crossing the direction D2. The first transparent region172is adjacent to the sub-pixels174aand the sub-pixel174balong the direction D1. The second transparent region176is extending along the direction D1between the two sub-pixels174a,174b. The first transparent region172has a fifth width w5in maximum along the direction D2, the second transparent region176has a sixth width w6in minimum along the direction D2, and the fifth width w5is greater than the sixth width w6. In an embodiment, the direction D2is substantially parallel to the extending direction of gate line. In another embodiment, the direction D2is crossed to the extending direction of the data line. Herein, the direction D2and the extending direction of the data line are different. For example, the direction D2may be perpendicular to the extending direction of the data line or an angle (such as 75-90 degrees or 80-90 degrees) is included between the direction D2and the extending direction of the data line, but not just limited thereto.

In this configuration, the pitch A described as the embodiment of theFIG. 2between adjacent two first transparent regions172along the direction D2is increased. The diffraction effect is reduced by increasing the pitch A between adjacent transparent regions.

Referring toFIG. 11B, the structure is similar to the structure inFIG. 11Abut a periphery of the color filter with respect to the sub-pixels174a,174bin actual fabrication may extend out, not formed by straight sides. The sixth width w6is then reduced. In a further situation, the color filters of the two sub-pixels174a,174bmay even contact to each other, in which the sixth width w6may be approaching or even equal to zero. In this configuration, the pitch A described as the embodiment of theFIG. 2between adjacent two first transparent regions172along the direction D2is increased.

The forgoing disclosure of embodiments is based on the drawing as an example. However, the disclosures in the other embodiments and drawings with the features described above may also fall into the protection scope of the forgoing disclosure.

FIG. 12is a drawing, schematically illustrating the pixel structure corresponding to the pixel array inFIG. 11AandFIG. 11B, according to an embodiment of the disclosure. Referring toFIG. 12, in an embodiment, the pixel structure based on the configuration inFIG. 11AandFIG. 11Bis involving two adjacent data lines50a,50b, which are disposed adjacent to each other but belonging to two unit regions170along the direction D2. In other words, the two adjacent data lines50a,50bdispose between the adjacent two of the unit region. In this situation, the adjacent two data lines50a,50bform a data line group, which occupies a relatively wider data line width, as seen inFIG. 11AandFIG. 11B.

The forgoing disclosure of embodiments is based on the drawing as an example. However, the disclosures in the other embodiments and drawings with the features described above may also fall into the protection scope of the forgoing disclosure.

In a further modification onFIG. 11A,FIG. 11BandFIG. 12, the adjacent two data lines50a,50binFIG. 12may be made by different metal layers. In some embodiments, the adjacent two data lines50a,50bmay have at least an overlapping portion.FIG. 13is a drawing, schematically illustrating the pixel structure corresponding to the pixel array inFIG. 11AandFIG. 11B, according to an embodiment of the disclosure.

Referring toFIG. 13with reference toFIG. 11A,FIG. 11BandFIG. 12, the two data lines50aand50binFIG. 12respectively belonging to the adjacent two unit regions170along the direction D2may be arranged to be overlapped as a data line group. In some embodiment, the two data lines50aand50bhave at least an overlapped portion, for example, in the top view ofFIG. 13. In another embodiment, the two data lines50aand50bhave a width about equal to a width of a single data line.

The forgoing disclosure of embodiments is based on the drawing as an example. However, the disclosures in the other embodiments and drawings with the features described above may also fall into the protection scope of the forgoing disclosure.

In an embodiment, the pixel structure in other design may include a primary pixel and a second pixel together controlled by two data lines (2D) with one gate line (1G), called 2D1G structure, or controlled by two gate lines (2G) as a master gate line and a slave gate line and one data line (1D), called 2G1D structure. The disclosure may be applied to these applications, in which the gate lines or the two data lines may be stacked up or overlapped, as the examples.

In an embodiment, taking the 2G1D structure for example, two adjacent gate line (not shown), which are disposed adjacent to each other but belonging to two unit regions along the direction D1(for example, the extending direction of data line). In other words, the two adjacent gate lines dispose between the adjacent two of the unit region.

The forgoing disclosure of embodiments is based on the drawing as an example.

However, the disclosures in the other embodiments and drawings with the features described above may also fall into the protection scope of the forgoing disclosure.

FIG. 14is a drawing, schematically illustrating the transparent region with another transparent region in a pixel array of a transparent display device, according to an embodiment of the disclosure. Referring toFIG. 14, the configuration for a unit region180has included mechanism inFIG. 2to increase the pitch A of the two of first transparent regions182in the direction D1and the features inFIG. 11AandFIG. 11Bto increase the pitch A of the two of first transparent regions182in the direction D2. The unit region180includes a first transparent region182, a second transparent region184serving as another transparent region and at least two sub-pixels (for example, four sub-pixels), but the disclosure is not limited to four sub-pixels. In this embodiment, referring to theFIG. 14, a portion of the at least two sub-pixels is arranged along the direction D1, and a portion of the at least two sub-pixels is arranged along another direction D2. A portion of the second transparent region184is disposed between two of the portion of the at least two sub-pixels arranged along another direction D2. In other words, the second transparent region184is among the four sub-pixels shown asFIG. 14. In embodiments, several widths as indicated by w3, w4, w5and w6are further described. The width w3is referring to the width of the first transparent regions182along the direction D1. The width w4is referring to the width of a portion of the second transparent region184along the direction D1and between adjacent two sub-pixels along the direction D1, in which the portion of the second transparent region184is extending along the direction D2. The width w4is smaller the width w3. Further, the width w5is referring to the width of the first transparent regions182along the direction D2. The width w6is referring to the width of a portion of the second transparent region184along the direction D2and between adjacent two sub-pixels along the direction D2, in which the portion of the second transparent region184is extending along the direction D1. The width w6is smaller the width w5.

The diffraction effect of the first transparent region182is relating to the mechanism as described inFIG. 4, in which the pitches of two of the first transparent regions184in the direction D1and the direction D2are all increased. The diffraction effect of the second transparent region184is relating to the mechanism as described inFIG. 7. A black matrix188in an embodiment may be additionally implemented between the sub-pixels along the direction D2. However, the use of the black matrix188is an option without limiting the disclosure.

The forgoing disclosure of embodiments is based on the drawing as an example. However, the disclosures in the other embodiments and drawings with the features described above may also fall into the protection scope of the forgoing disclosure.

In a further embodiment, a unit region180′ may also be configured, including a first transparent region182′, a second transparent region184′ and two sub-pixels.

FIG. 15is a drawing, schematically illustrating the transparent region with another transparent region in a pixel array of a transparent display device, according to a variant embodiment of theFIG. 14of the disclosure. Referring toFIG. 15, the transparent display is configured to also have the unit region180and the unit region180′ as described inFIG. 14. The size relations for the widths w3, w4, w4, w5are not repeatedly described here. However, the first transparent region182is alternately disposed with four sub-pixels along the direction D1and the direction D2.

As also noted, the black matrix188inFIG. 14andFIG. 15may be optionally implemented to cover the region as intended without specific limitation.

The forgoing disclosure of embodiments is based on the drawing as an example. However, the disclosures in the other embodiments and drawings with the features described above may also fall into the protection scope of the forgoing disclosure.

The disclosure provides the transparent display device based on at least one of the factors including the pitch A of the two of the first transparent regions182in direction D1, the pitch A of the two of the first transparent regions182in direction D2, the second transparent region184in direction D1, the second transparent region184in direction D2, and overlapping of the data lines, the diffraction effect of the background scene behind the transparent display device may be reduced.

The pitch described in the disclosure may include a sum of widths of at least two sub-pixels along the sub-pixels arrangement direction.