Transparent display panel and terminal equipment

Abstract

The embodiment of the invention discloses a transparent display panel and terminal equipment, a display area of the transparent display panel is divided into a plurality of sub-display areas and a wiring area, each sub-display area is provided with a light-emitting unit, a driving unit at least comprises a first driving unit located in the wiring area and a second driving unit located in the sub-display area, the first driving units are electrically connected with the light-emitting units in the adjacent sub-display areas, and the setting density of the first driving units is smaller than that of the second driving units; the light-emitting units are only arranged in the sub-display areas, the light-emitting units are not arranged in the wiring area, the number of the driving units can be reduced, the aperture opening ratio is increased, the setting density of the first driving units is smaller than that of the second driving units, the aperture opening ratio can be smoothly transited from the sub-display areas to the wiring area, and the display effect is improved. And therefore, the overall screen is better in impression.

Description

Technical Field

[0001] This application relates to the field of display technology, specifically to a transparent display panel and a terminal device. Background Technology

[0002] Transparent display panels have attracted widespread attention as a new technological solution, and they have great application potential in many fields. However, due to the small size of the light-emitting chips, once the pixel density of the display screen increases to a certain extent, the size of the light-emitting chips and the backplane circuit design cannot be further reduced due to limitations in process capability, which makes it impossible to further increase the aperture ratio. The current aperture ratio cannot meet the needs of transparent display panels. Therefore, there is an urgent need to provide a design that can improve the aperture ratio of transparent display panels.

[0003] Therefore, existing transparent display panels suffer from the technical problem of low aperture ratio. Summary of the Invention

[0004] The embodiments of this application provide a transparent display panel and a terminal device, which can alleviate the technical problem of low aperture ratio in existing transparent display panels.

[0005] An embodiment of this application provides a transparent display panel, including a display area and a non-display area. The display area includes at least two sub-display areas and a wiring area, with the wiring area located outside the sub-display areas.

[0006] The transparent display panel includes a substrate continuously arranged across its entire surface, light-emitting units arranged in an array above the substrate, and driving units electrically connected to the light-emitting units. The light-emitting units are disposed in the sub-display area. The driving unit includes at least a first driving unit located within the wiring area. The first driving unit is electrically connected to the light-emitting units in adjacent sub-display areas. The arrangement density of the first driving unit is less than the arrangement density of the second driving unit.

[0007] Optionally, in some embodiments of this application, the at least two sub-display areas include at least a first sub-region and a second sub-region with different area sizes, wherein the pixel density of the first sub-region is different from that of the second sub-region.

[0008] Optionally, in some embodiments of this application, the area of ​​the first sub-region is larger than the area of ​​the second sub-region, the driving unit is disposed away from the second sub-region, and the driving unit further includes a second driving unit located within the first sub-region. The first sub-region includes a central region and an edge region disposed around the central region. The second driving unit is disposed in the central region and is electrically connected to the light-emitting unit in the central region.

[0009] Optionally, in some embodiments of this application, the transparent display panel further includes a GOA unit, the GOA unit being disposed between adjacent sub-display areas, and the light-emitting units in adjacent sub-display areas being electrically connected to the same GOA unit.

[0010] Optionally, in some embodiments of this application, the first driving unit and the second driving unit are pixel driving circuits, the pixel driving circuits include at least driving transistors, and the driving unit further includes a third circuit structure, the third circuit structure being a compensation circuit, the compensation circuit being used to regulate the threshold voltage of the driving transistors, wherein one of the compensation circuits is electrically connected to at least two of the driving transistors, and at least a portion of the compensation circuits are disposed in the wiring area.

[0011] Optionally, in some embodiments of this application, the transparent display panel further includes a scan line extending along a first direction and a compensation line extending along a second direction, the first direction intersecting the second direction, the compensation circuit being disposed in the wiring area outside at least one edge of the sub-display area along the second direction, and any of the compensation circuits being electrically connected to a column of light-emitting units arranged along the second direction through the compensation line.

[0012] Optionally, in some embodiments of this application, the transparent display panel further includes power lines extending along a first direction, wherein adjacent sub-display areas arranged along the first direction share the scan lines and the power lines.

[0013] Optionally, in some embodiments of this application, the outline shape of the first sub-region is circular or elliptical, and the outline shape of the second sub-region is square or rectangular.

[0014] Optionally, in some embodiments of this application, the light-emitting unit includes a first light-emitting unit located within the sub-display area and a second light-emitting unit located at least partially within the wiring area, wherein the first light-emitting unit is electrically connected to the driving unit, the second light-emitting unit is insulated from the driving unit, and adjacent light-emitting units are arranged in an array.

[0015] Embodiments of this application provide a terminal device, the terminal device including a transparent display panel as described in any of the above embodiments.

[0016] Beneficial effects: By setting light-emitting units only in the sub-display area and not in the wiring area, the number of driving units can be reduced, thereby increasing the aperture ratio. At the same time, setting the density of the first driving unit is less than that of the second driving unit, so that the aperture ratio can transition smoothly from the wiring area to the sub-display area, thus improving the overall screen appearance and alleviating the technical problem of low aperture ratio in existing transparent display panels. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a top view of the first transparent display panel provided in this application;

[0019] Figure 2 This is a second top view of the transparent display panel provided in this application;

[0020] Figure 3 This is a cross-sectional schematic diagram of the array substrate in the transparent display panel provided in this application;

[0021] Figure 4 This is a third top view of the transparent display panel provided in this application;

[0022] Figure 5 This is a top view schematic diagram of the connection relationship of the compensation circuit in the transparent display panel provided in this application;

[0023] Figure 6 This is a fourth top view of the transparent display panel provided in this application;

[0024] Figure 7 This is a cross-sectional schematic diagram of the transparent display panel provided in this application;

[0025] Figure 8 This is the fifth top view of the transparent display panel provided in this application.

[0026] Explanation of reference numerals in the attached figures:

[0027]

[0028] Detailed Implementation

[0029] The technical solutions in the embodiments of this application will now be described with reference to the accompanying drawings. The technical solutions described below are for illustrative purposes only and should not be construed as limiting the scope of protection of this application.

[0030] Furthermore, the terms "first," "second," and similar words do not indicate any order, quantity, or importance, but are merely used to distinguish different technical features. The terms "multiple" and similar words indicate two or more unless otherwise expressly specified.

[0031] Please see Figure 1 , Figure 2 The transparent display panel provided in this application includes a display area 1 and a non-display area 2 surrounding the display area 1. The display area 1 includes a plurality of sub-display areas 3 and a wiring area 4 located between adjacent sub-display areas 3. The transparent display panel includes an electric light-emitting unit 5 and a driving unit 6 electrically connected. The light-emitting unit 5 is disposed in the sub-display area 3. The driving unit 6 includes at least a first driving unit 61 located in the wiring area 4 and a second driving unit 62 located in the sub-display area 3. The first driving unit 61 is electrically connected to the light-emitting unit 5 in the adjacent sub-display area 3. The first driving unit 61 is disposed at the junction of the wiring area 4 and the sub-display area 3.

[0032] In this embodiment, by setting the light-emitting unit 5 only in the sub-display area 3 and not setting the light-emitting unit 5 in the wiring area 4, the number of driving units 6 can be reduced, thereby increasing the aperture ratio. At the same time, the setting density of the first driving unit 61 is less than the setting density of the second driving unit 62, so that the aperture ratio can transition smoothly from the wiring area 4 to the sub-display area 3, thereby improving the overall screen appearance.

[0033] The technical solution of this application will now be described in conjunction with specific embodiments.

[0034] The embodiments in this application are only illustrated by taking the light-emitting unit 5 as a micro light-emitting chip (Micro LED) as an example, but they are also applicable to OLED display panels.

[0035] Furthermore, the shape, area, etc. of the sub-display area 3 in this application are only described with reference to the best or preferred embodiment. Other embodiments that can satisfy the display function should also fall within the protection scope of this invention, and will not be described in detail here.

[0036] In one embodiment, please refer to Figure 3 The transparent display panel includes an array substrate, which includes multiple driving units 6. The array substrate includes a substrate 10, a light-shielding layer 20, a buffer layer 30, an active layer 40, a gate insulating layer 50, a gate layer 60, an interlayer insulating layer 70, a first metal layer 80, a planarization layer 90, a passivation layer 100, and a second metal layer 110, which are sequentially disposed on the substrate 10.

[0037] The first metal layer 80 can be a source / drain layer 802, which includes a source 801 and a drain 802. The second metal layer 110 includes a first electrode, and the drain 802 is connected to the first electrode through a via.

[0038] In one embodiment, please refer to Figure 1 The sub-display area 3 includes at least a first sub-area 31 and a second sub-area 32 with different area sizes. In the film thickness direction, the area of ​​the first sub-area 31 is larger than the area of ​​the second sub-area 32.

[0039] The sub-display area 3 may include multiple sub-areas, which are located at different positions in the display area 1.

[0040] The plurality of sub-regions may also include a third sub-region 33 and a fourth sub-region 34.

[0041] It is understood that at least one of the areas, functions, and shapes of the multiple sub-regions may be different. For example, taking the display screen used in a vehicle dashboard as an example, the first sub-region 31 can be used to display speed and tachometer, the second sub-region 32 can be used to display navigation information, the third sub-region 33 can be used to display vehicle status, and the third sub-region 34 can be used to display temperature and time.

[0042] In one embodiment, the driving unit 6 is disposed away from the second sub-region 32. The driving unit 6 further includes a second driving unit 62 located within the first sub-region 31. The first sub-region 31 includes a central region and an edge region surrounding the central region. The second driving unit 62 is disposed in the central region and is electrically connected to the light-emitting unit 5 in the central region.

[0043] The second driving unit 62 can be a pixel driving circuit.

[0044] It is understandable that since there are fewer light-emitting units 5 in the smaller second sub-region 32, the driving units 6 can all be set in the wiring area 4, and the driving units 6 can be omitted in the second sub-region 32, which further improves the aperture ratio of the sub-display area 3.

[0045] It is understandable that the first sub-region 31, which has a larger area, has more light-emitting units 5. Due to the inconvenience of process and wiring, it is difficult to set the driving units 6 of the central region in the wiring area 4, and the driving units 6 of the edge region can only be set in the wiring area 4.

[0046] In this embodiment, for the smaller second sub-region 32, all driving units 6 are disposed in the wiring region 4, so that only light-emitting units 5 are disposed in the second sub-region 32, thereby further improving the aperture ratio; at the same time, for the larger first sub-region 31, only some driving units 6 are disposed in the wiring region 4, and no driving units 6 are disposed in the edge region, so as to facilitate the electrical connection between the driving units 6 in the wiring region 4 and the light-emitting units 5 in the edge region.

[0047] In one embodiment, please refer to Figure 4 The transparent display panel also includes a GOA unit 9, which is disposed between adjacent sub-display areas 3. The light-emitting units 5 in adjacent sub-display areas 3 are electrically connected to the same GOA unit 9.

[0048] Each of the sub-display areas 3 may be electrically connected to only one GOA unit 9.

[0049] Each of the sub-display areas 3 can also be electrically connected to the two GOA units 9 located on its two sides.

[0050] It is understandable that since different sub-display areas 3 can be set up in parallel, and the parallel sub-display areas 3 can share some signal traces, including the connection traces of GOA unit 9, different sub-display areas 3 can be connected to the same GOA unit 9. That is, by sharing the same GOA unit 9 by different sub-display areas 3, the number of GOA units 9 can be reduced, thereby increasing the aperture ratio.

[0051] In one embodiment, the GOA unit 9 may also be located in the sub-display area 3 or the non-display area 2.

[0052] In one embodiment, please refer to Figure 5 The first driving unit 61 and the second driving unit 62 are pixel driving circuits. The pixel driving circuit includes at least a driving transistor. The driving unit 6 also includes a third circuit structure, which is a compensation circuit 63. The compensation circuit 63 is used to regulate the threshold voltage of the driving transistor. One of the compensation circuits 63 is electrically connected to at least two of the driving transistors. At least a portion of the compensation circuits 63 are disposed in the wiring area 4.

[0053] Please refer to Figure 5 The compensation circuit 63 can be connected to three driving transistors. Specifically, the compensation circuit 63 can be connected to the gates of three driving transistors through three switching transistors, and the gates of the three switching transistors are respectively connected to the first scan signal Scan1, the second scan signal Scan2, and the third scan signal Scan3.

[0054] The driving unit 6 may further include a fourth circuit structure, which may be an electrostatic discharge (ESD) circuit, and the ESD circuit is at least partially disposed in the wiring area 4.

[0055] It is understandable that a compensation circuit 63 can compensate for multiple driving transistors. At least the compensation circuit 63 at the edge of the sub-display area 3 can be set in the wiring area 4 to increase the aperture ratio.

[0056] It should be noted that the signal of the compensation circuit 63 is connected to the gate of the driving transistor, which can compensate for the threshold voltage of the driving transistor.

[0057] In this embodiment, the driving unit 6 further includes a compensation circuit 63 and an electrostatic discharge circuit. The compensation circuit 63 and the electrostatic discharge circuit can be at least partially disposed in the wiring space, thereby improving the aperture ratio.

[0058] In one embodiment, the electrostatic discharge circuit can be electrically connected to a row of light-emitting units 5 arranged along the second direction, and the electrostatic discharge circuit is disposed in the wiring space.

[0059] In this embodiment, the electrostatic discharge circuit is placed in the wiring area 4 on the outer side of the sub-display area 3 along the second direction, and no electrostatic discharge circuit is provided in the sub-display area 3, thereby further improving the aperture ratio.

[0060] In one embodiment, the transparent display panel further includes a scan line 8 extending along a first direction X and a compensation line 120 extending along a second direction, wherein the first direction X intersects the second direction, and the compensation circuit 63 is disposed in the wiring area 4 outside at least one edge of the sub-display area 3 along the second direction, and any one of the compensation circuits 63 is electrically connected to a column of light-emitting units 5 arranged along the second direction through the compensation line 120.

[0061] It is understandable that a compensation line 120 connected to the compensation circuit 63 can be provided. The compensation line 120 can replace the data line 7 and be electrically connected to a column of light-emitting units 5. Since the compensation circuit 63 is connected to a column of light-emitting units 5 arranged along the second direction through the compensation line 120, the number of compensation circuits 63 can be reduced, thereby further increasing the aperture ratio.

[0062] It is understandable that the compensation circuit 63 can be located in the wiring area 4 outside the upper or lower edge of the sub-display area 3, so that the compensation circuit 63 is not set in the sub-display area 3, but is set in the wiring area 4, thereby further increasing the aperture ratio.

[0063] It should be noted that the compensation circuit 63 can be set at the junction of the wiring area 4 and the sub-display area 3, so that the transition from the sub-display area 3 to the wiring area 4 is smoother.

[0064] In this embodiment, by electrically connecting the compensation circuit 63 to a column of light-emitting units 5 and setting it on one side of the column of light-emitting units 5 along the second direction, it is convenient to set the compensation circuit 63 in the wiring area 4 while electrically connecting the compensation circuit 63 to the column of light-emitting units 5.

[0065] In one embodiment, please refer to Figure 6 The compensation circuit 63 is electrically connected to a column of light-emitting units 5. The compensation circuit 63 can also be set in the non-display area 2.

[0066] In one embodiment, any column of light-emitting units 5 can be divided into an upper half region and a lower half region along the second direction. Two compensation circuits 63 are respectively provided on both sides of any column of light-emitting units 5. The light-emitting units 5 in the upper half region are electrically connected to the compensation circuit 63 located on one side of the upper half region, and the light-emitting units 5 in the lower half region are electrically connected to the compensation circuit 63 located on one side of the lower half region.

[0067] It is understandable that, relative to each or several light-emitting units 5 corresponding to a compensation circuit 63, setting the compensation circuit 63 in the central area would make it inconvenient to move the compensation circuit 63 to the wiring area 4. However, setting the compensation circuit 63 on both sides of a row of light-emitting units 5 along the second direction makes it easier for the compensation circuit 63 to be set in the wiring area 4.

[0068] In one embodiment, please refer to Figure 4 The transparent display panel further includes a power line extending along a first direction X, wherein adjacent sub-display areas 3 arranged along the first direction X share the scan line 8 and the power line.

[0069] The power lines include high-voltage power line VDD and low-voltage power line VSS.

[0070] It is understandable that adjacent sub-display areas 3 along the first direction X can share scan lines 8 and / or power lines, and adjacent sub-display areas 3 along the second direction can share scan lines 8 and / or compensation lines 120, thereby reducing the number of traces and increasing the aperture ratio.

[0071] In one embodiment, the outline shape of the first sub-region 31 is circular or elliptical, and the outline shape of the second sub-region 32 is square or rectangular.

[0072] In one embodiment, please refer to Figure 7 , Figure 8The light-emitting unit 5 includes a first light-emitting unit located in the sub-display area 3 and a second light-emitting unit located at least partially in the wiring area 4. The first light-emitting unit is electrically connected to the driving unit 6, and the second light-emitting unit is insulated from the driving unit 6. Adjacent light-emitting units 5 are arranged in an array.

[0073] It is understandable that since the light-emitting units 5 are arranged in an array in the sub-display area 3, and the outline of the array is square or rectangular, when the outline of the sub-display area 3 is circular, some of the light-emitting units 5 located at the edge of the sub-display area 3 may be located in the wiring area 4, making the light-emitting units 5 located in the wiring area 4 pseudo-pixels 130. Pseudo-pixels 130 do not need to be electrically connected to the driving unit 6 and do not need to emit light. By arranging the light-emitting units 5 in an array, the process can be simplified, and it is convenient to transfer and set multiple light-emitting units 5 in the sub-display area 3.

[0074] This application further divides the display area 1 into a sub-display area 3 and a wiring area 4. The light-emitting unit 5 is only provided in the sub-display area 3, and the light-emitting unit 5 is not provided in the wiring area 4. Compared with the prior art, the light-emitting unit 5 and the connected driving unit 6 in the wiring area 4 can be eliminated, thereby improving the aperture ratio. Furthermore, the driving unit 6 is set at the junction of the wiring area 4 and the sub-display area 3 to avoid a large gradient change in the aperture ratio between the sub-display area 3 and the wiring area 4, so that the change in the aperture ratio between the wiring area 4 and the sub-display area 3 is smoother, and the overall screen viewing experience is better.

[0075] This application also proposes a display module and a terminal device, both of which include the aforementioned transparent display panel. The terminal device includes, but is not limited to, mobile phones, laptops, and tablets.

[0076] The transparent display panel provided in the embodiments of this application divides the display area into multiple sub-display areas and a wiring area. The sub-display areas are provided with light-emitting units. The driving unit includes at least a first driving unit located in the wiring area and a second driving unit located in the sub-display area. The first driving unit is electrically connected to the light-emitting units in the adjacent sub-display areas. The arrangement density of the first driving unit is less than the arrangement density of the second driving unit. By providing light-emitting units only in the sub-display areas and not providing light-emitting units in the wiring areas, the number of driving units can be reduced, the aperture ratio can be increased, and the arrangement density of the first driving unit is less than the arrangement density of the second driving unit, so that the aperture ratio can transition smoothly from the sub-display area to the wiring area, thereby improving the overall screen appearance.

[0077] The transparent display panel provided in the embodiments of this application has been described in detail above. Without departing from the spirit and essential points of this application, those skilled in the art can make various corresponding changes and modifications based on this application, but all such corresponding changes and modifications should fall within the protection scope of the appended claims.

Claims

1. A transparent display panel, comprising a display area and a non-display area, characterized in that, The display area includes at least two sub-display areas and a wiring area, with the wiring area located outside the sub-display areas. The transparent display panel includes a substrate continuously arranged across its entire surface, light-emitting units arrayed above the substrate, and driving units electrically connected to the light-emitting units. The light-emitting units are disposed in the sub-display area. The driving unit includes at least a first driving unit located in the wiring area and a second driving unit located in the sub-display area. The first driving unit is electrically connected to the light-emitting units in adjacent sub-display areas. The arrangement density of the first driving unit is less than that of the second driving unit.

2. The transparent display panel of claim 1, wherein, The at least two sub-display areas include a first sub-area and a second sub-area with different area sizes, and the pixel density of the first sub-area is different from that of the second sub-area.

3. The transparent display panel as described in claim 2, characterized in that, The area of ​​the first sub-region is larger than the area of ​​the second sub-region. The driving unit is disposed away from the second sub-region. The driving unit also includes a second driving unit located within the first sub-region. The first sub-region includes a central region and an edge region surrounding the central region. The second driving unit is disposed in the central region and is electrically connected to the light-emitting unit in the central region.

4. The transparent display panel as described in claim 3, characterized in that, The transparent display panel also includes a GOA unit, which is disposed between adjacent sub-display areas, and the light-emitting units in adjacent sub-display areas are electrically connected to the same GOA unit.

5. The transparent display panel as described in claim 4, characterized in that, The first driving unit and the second driving unit are pixel driving circuits. The pixel driving circuit includes at least a driving transistor. The driving unit also includes a third circuit structure, which is a compensation circuit. The compensation circuit is used to regulate the threshold voltage of the driving transistor. The compensation circuit is electrically connected to at least two driving transistors, and at least a portion of the compensation circuit is disposed in the wiring area.

6. The transparent display panel as described in claim 5, characterized in that, The transparent display panel further includes a scan line extending along a first direction and a compensation line extending along a second direction, the first direction intersecting the second direction. The compensation circuit is disposed in the wiring area outside at least one edge of the sub-display area along the second direction. Each of the compensation circuits is electrically connected to a column of light-emitting units arranged along the second direction through the compensation line.

7. The transparent display panel as described in claim 6, characterized in that, The transparent display panel also includes power lines extending along a first direction, wherein adjacent sub-display areas arranged along the first direction share the scan lines and the power lines.

8. The transparent display panel as described in claim 2, characterized in that, The outline shape of the first sub-region is circular or elliptical, and the outline shape of the second sub-region is square or rectangular.

9. The transparent display panel as described in claim 1, characterized in that, The light-emitting unit includes a first light-emitting unit located in the sub-display area and a second light-emitting unit located at least partially in the wiring area, wherein the first light-emitting unit is electrically connected to the driving unit, the second light-emitting unit is insulated from the driving unit, and adjacent light-emitting units are arranged in an array.

10. A terminal device, characterized in that, The terminal device includes a transparent display panel as described in any one of claims 1 to 9.

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