阅读说明：本技术 一种显示面板和显示装置 (Display panel and display device ) 是由 吴晓晓 于 2021-08-26 设计创作，主要内容包括：本发明实施例提供一种显示面板及显示装置,显示面板包括衬底；位于衬底一侧的多个发光器件；位于衬底一侧的绝缘层,绝缘层覆盖发光器件的至少部分侧出光面；位于绝缘层中且位于相邻两个发光器件之间的凹槽；至少覆盖凹槽侧壁的遮光层；位于发光器件远离衬底一侧的色转换层,发光器件出射的光线经色转换层后出射。通过在围绕发光器件四周的绝缘层中设置凹槽,进一步在凹槽设置遮光层,通过遮光层对发光器件侧出光面出射的大视角光线进行遮挡,以减少相邻发光器件之间侧面发射光线光串色问题,提高显示面板的显示对比度,提高显示面板的显示效果。(The embodiment of the invention provides a display panel and a display device, wherein the display panel comprises a substrate; a plurality of light emitting devices on one side of the substrate; the insulating layer is positioned on one side of the substrate and covers at least part of the side light emitting surface of the light emitting device; the groove is positioned in the insulating layer and positioned between two adjacent light-emitting devices; a light shielding layer at least covering the side wall of the groove; and the light rays emitted by the light emitting device are emitted after passing through the color conversion layer. Through set up the recess in the insulating layer around luminescent device all around, further set up the light shield layer at the recess, shelter from the emergent large visual angle light of luminescent device side light-emitting face through the light shield layer to reduce between the adjacent luminescent device side emission light optical crosstalk problem, improve display panel's display contrast, improve display panel's display effect.)

1. A display panel, comprising:

a substrate;

a plurality of light emitting devices on one side of the substrate;

the insulating layer is positioned on one side of the substrate and covers at least part of the side light emitting surface of the light emitting device;

the groove is positioned in the insulating layer and positioned between two adjacent light-emitting devices;

a light shielding layer at least covering the side wall of the groove;

and the color conversion layer is positioned on one side of the light-emitting device far away from the substrate, and light rays emitted by the light-emitting device are emitted after passing through the color conversion layer.

2. The display panel according to claim 1, wherein the light-emitting device comprises a first light-emitting device for emitting light of a first wavelength;

the color conversion layer comprises a color excitation layer, the first wavelength light excites the color excitation layer and then emits second wavelength light, and the wavelength of the second wavelength light is larger than or equal to that of the first wavelength light.

3. The display panel of claim 2, wherein the first light emitting device comprises a blue light emitting device;

the color conversion layer includes a red color conversion layer and a green color conversion layer.

4. The display panel according to claim 3, wherein the light shielding layer comprises a first blue light absorbing layer.

5. The display panel of claim 3, further comprising a second blue light absorbing layer on a side of the color conversion layer remote from the substrate.

6. The display panel according to claim 2, wherein the first light-emitting device comprises a violet light-emitting device and/or an ultraviolet light-emitting device;

the color conversion layer includes a red color conversion layer, a green color conversion layer, and a blue color conversion layer.

7. The display panel of claim 1, further comprising a plurality of light converging structures between the light emitting devices and the color conversion layer;

along a first direction, the light converging structure is at least partially overlapped with the light emitting device; the first direction is perpendicular to the plane of the substrate.

8. The display panel of claim 7, wherein the insulating layer covers the light converging structure, and the refractive index n1 of the light converging structure and the refractive index n2 of the insulating layer satisfy n1> n 2.

9. The display panel according to claim 1, wherein the light emitting device includes a lower light emitting surface near a side of the substrate;

the recess comprises a recess floor adjacent one side of the substrate;

along a first direction, the bottom surface of the groove is flush with the lower light-emitting surface, or the bottom surface of the groove is positioned on one side of the lower light-emitting surface close to the substrate; the first direction is perpendicular to the plane of the substrate.

10. The display panel according to claim 1, wherein the light emitting device comprises a first light emitting surface near one side of the color conversion layer;

along the light emitting direction of the light emitting device, the light shielding layer is partially overlapped with the first light emitting surface.

11. The display panel according to claim 1, wherein the insulating layer comprises an organic insulating layer.

12. The display panel according to claim 1, further comprising a driving circuit layer between the substrate and the light emitting device, wherein the driving circuit layer comprises a plurality of driving circuits electrically connected to the light emitting device for driving the light emitting device to emit light.

13. The display panel of claim 1, wherein the color conversion layer comprises a phosphor layer or a quantum dot layer.

14. A display device comprising the display panel according to any one of claims 1 to 13.

Technical Field

The embodiment of the invention relates to a display technology, in particular to a display panel and a display device.

Background

With the rapid progress of display technology, display panel technology, which is the core of display devices, has also been dramatically advanced.

For the display panel in the prior art, the problem of light crosstalk exists between two adjacent light emitting devices, and the display effect is affected.

Disclosure of Invention

The embodiment of the invention provides a display panel and a display device.

In a first aspect, an embodiment of the present invention provides a display panel and a display device, including:

a substrate;

a plurality of light emitting devices on one side of the substrate;

the insulating layer is positioned on one side of the substrate and covers at least part of the side light emitting surface of the light emitting device;

the groove is positioned in the insulating layer and positioned between two adjacent light-emitting devices;

a light shielding layer at least covering the side wall of the groove;

and the color conversion layer is positioned on one side of the light-emitting device far away from the substrate, and light rays emitted by the light-emitting device are emitted after passing through the color conversion layer.

In a second aspect, an embodiment of the present invention provides a display device, including the display panel provided in the first aspect.

According to the display panel provided by the embodiment of the invention, the groove is formed in the insulating layer surrounding the periphery of the light emitting device, the light shielding layer is further arranged in the groove, and the large-view-angle light emitted from the light emitting device side light emitting surface is shielded by the light shielding layer, so that the color cross-talk problem of the side-emitted light between the adjacent light emitting devices is reduced, the large-view-angle light emitted from the light emitting device side light emitting surface is prevented from exciting the color excitation layer corresponding to the adjacent light emitting device to cause display crosstalk, the display contrast of the display panel can be improved, and the display effect of the display panel is improved.

Drawings

FIG. 1 is a schematic diagram of a display panel in the related art;

fig. 2 is a schematic top view of a display panel according to an embodiment of the present invention;

FIG. 3 is a schematic cross-sectional view of the display panel along direction AA' in FIG. 2;

FIG. 4 is a schematic cross-sectional view of another display panel along the direction AA' in FIG. 2;

FIG. 5 is a schematic cross-sectional view of another display panel along the direction AA' in FIG. 2;

FIG. 6 is a schematic cross-sectional view of another display panel along the direction AA' in FIG. 2;

FIG. 7 is a schematic cross-sectional view of another display panel along the direction AA' in FIG. 2;

FIG. 8 is a schematic cross-sectional view of another display panel along the direction AA' in FIG. 2;

fig. 9 is a schematic structural diagram of a display device according to an embodiment of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

Fig. 1 is a schematic structural diagram of a display panel in the related art. As shown in fig. 1, a display panel 100 in the related art includes light emitting devices 101 and color conversion layers 102, the light emitting devices 101 and the color conversion layers 102 are arranged in a one-to-one correspondence, light emitted from the light emitting devices 101 excites the color conversion layers 102 and then emits light, and the light is mixed to realize color display. Because the divergence angle of the light emitting device 101 is large, the light laterally diverged by the side surfaces of the adjacent light emitting devices 101 is prone to color cross, that is, the light S diverged by the side surfaces of the light emitting devices 101 excites the color conversion layer 102 corresponding to the adjacent light emitting devices 101, so that color cross is generated, and the display contrast and the display effect of the display panel are affected.

In view of the above technical problem, an embodiment of the present invention provides a display panel, including a substrate; a plurality of light emitting devices on one side of the substrate; the insulating layer is positioned on one side of the substrate and covers at least part of the side light emitting surface of the light emitting device; the groove is positioned in the insulating layer and positioned between two adjacent light-emitting devices; a light shielding layer at least covering the side wall of the groove; and the light rays emitted by the light emitting device are emitted after passing through the color conversion layer. By adopting the technical scheme, the groove is formed in the insulating layer between the two adjacent light-emitting devices, the light shielding layer is filled in the groove and covers at least the side wall of the groove, and the light shielding layer plays a role in shielding the light-emitting devices from measuring light rays with a large light surface visual angle, so that the light-emitting devices excite the corresponding color conversion layer, the color cross-color problem of side-emitting light rays between the adjacent light-emitting devices is reduced, the display contrast of the display panel is improved, and the display effect of the display panel is improved.

The above is the core idea of the present invention, and the technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the drawings in the embodiment of the present invention. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without any creative work belong to the protection scope of the present invention.

Fig. 2 is a schematic top view of a display panel according to an embodiment of the present invention; fig. 3 is a schematic cross-sectional view of the display panel along direction AA' in fig. 2. As shown in fig. 2 and fig. 3 in combination, the display panel 20 provided by the embodiment of the present invention includes a substrate 201; a plurality of light emitting devices 30 on one side of the substrate 201; an insulating layer 203 on one side of the substrate 201, the insulating layer 203 covering at least a part of a side light emitting surface of the light emitting device 30; a groove 40 in the insulating layer 203 and between two adjacent light emitting devices 30; a light-shielding layer 204 covering at least the side wall of the groove 40; and the color conversion layer 205 is positioned on one side of the light-emitting device 30 far away from the substrate 201, and light rays emitted by the light-emitting device 30 are emitted after passing through the color conversion layer 205.

Illustratively, as shown in fig. 3, a display panel 200 according to an embodiment of the present invention includes a substrate 201, and a plurality of film layers of the display panel are sequentially formed on one side of the substrate 201. The substrate 201 may be a flexible substrate, and the material of the substrate may include at least one of polyimide, polyethylene terephthalate, polycarbonate, polyarylate, and polyethersulfone; the substrate 201 may also be a rigid substrate, specifically, a glass substrate or other rigid substrates, which is not limited in the embodiment of the present invention. A plurality of Light Emitting devices 30 are disposed on one side of the substrate 201, the Light Emitting devices 30 may be Light Emitting Diodes (LEDs), Micro Light Emitting diodes (Micro LEDs), and the like, and the Light Emitting devices 30 may be prepared on the array substrate of the Display panel by multiple transfer methods. In the preparation of the display panel, an insulating layer 203 is prepared on one side of a substrate 201 in a deposition manner, so that the insulating layer 203 is ensured to cover at least part of the light emitting surfaces of the light emitting devices 30, a groove 40 is further obtained by grooving the insulating layer 203 between two adjacent light emitting devices 30, a light shielding layer 204 is filled in the groove 40, and the light shielding layer 204 at least covers the side wall of the groove 40, wherein the light shielding layer 204 can be a light absorbing structure or a reflective film structure and can absorb or reflect light emitted from the side surface of the light emitting device 30. Further, the display panel provided by the embodiment of the invention further includes a color conversion layer 205 located on one side of the light emitting device 30 far away from the substrate 201, and the light emitted from the light emitting device 30 in the side direction is absorbed or reflected by the light shielding layer 204, so that the light emitted from the light emitting device 30 can be prevented from being emitted from the adjacent color conversion layer 205, and display crosstalk is avoided. According to the invention, the grooves 40 and the light shielding layers 204 are arranged between the adjacent light-emitting devices 30, so that light emitted by the light-emitting devices 30 only excites the corresponding color conversion layers 205 or is emitted after passing through the corresponding color conversion layers 205, the problem of color cross of light emitted by the side surface between the adjacent light-emitting devices 30 is reduced, and the display contrast of the display panel and the display effect of the display panel are improved.

Further, the light emitting device 30 provided by the embodiment of the present invention may include a white light emitting device, and correspondingly, the color conversion layer 205 may be a color resistor, the white light is filtered by the color resistor of the corresponding color to form red light, green light, and blue light, respectively, and the red light, the green light, and the blue light are mixed to form a display image. Alternatively, the light emitting device 30 provided in the embodiment of the present invention emits light with a shorter wavelength, and the light with the shorter wavelength excites the color conversion layer 205 to emit red light, green light, and blue light, and the red light, the green light, and the blue light are mixed to form a display image.

It should be noted that the display panel provided in this embodiment further includes other film layers, which together function to realize the display function of the display panel, and the description is not provided here.

In summary, in the display panel provided in the embodiment of the present invention, the groove is formed in the insulating layer surrounding the periphery of the light emitting device, and the groove is filled with the light shielding layer, and the light shielding layer is used for shielding the light with the large viewing angle detected by the light emitting device, so as to reduce the color crosstalk problem of the side-emitting light between adjacent light emitting devices, and improve the display contrast of the display panel and the display effect of the display panel.

Optionally, with continued reference to fig. 3, the light emitting device 30 includes a first light emitting device 31, where the first light emitting device 31 is configured to emit light with a first wavelength; the color conversion layer 205 includes a color excitation layer, and emits a second wavelength light after the color excitation layer is excited by the first wavelength light, and the wavelength of the second wavelength light is greater than or equal to that of the first wavelength light.

Illustratively, as shown in fig. 3, the color conversion layer 205 includes a color excitation layer, which may be understood as a film layer that emits light after being excited by light. According to the light emitting characteristics of the color conversion layer 205, the light emitting device 30 is arranged to include the first light emitting device 31, the light emitting device 30 adopts an LED or a Micro LED, different color excitation layers are selected, when the first light emitting device 31 emits the first wavelength light with the short wavelength and the second wavelength light with the longer wavelength after passing through the color excitation layers, the light of the second wavelength light includes red light, green light and blue light, and after color mixing display, color display of the display panel is realized.

Alternatively, the color conversion layer 205 may include a phosphor layer or a quantum dot layer. Referring to fig. 3, by reasonably arranging the phosphor layer or the quantum dot layer, the light emitted from the light emitting device 30 excites the phosphor layer or the quantum dot layer to emit light, and then forms any one of red light, green light and blue light, and forms a display image of the display panel after color mixing display.

Alternatively, and with continued reference to fig. 3, the first light emitting device 31 comprises a blue light emitting device; the color conversion layer 205 includes a red color conversion layer 205(1) and a green color conversion layer 205 (2).

For example, as shown in fig. 3, the first light emitting device 31 includes a blue light emitting device, which emits blue light, such as a blue LED or a blue Micro LED, and a red color conversion layer 205(1) and a green color conversion layer 205(2) are respectively disposed at positions corresponding to the blue light emitting device, and are respectively excited to obtain red light and green light, at this time, the color conversion layer 205(3) may be a transparent substrate or other color conversion layers satisfying a blue light emitting condition, the position of the color conversion layer 205(3) may also be set to be unobstructed, and the blue light is still blue light after passing through the transparent substrate or unobstructed, so as to implement the non-cross color display of the display panel.

Fig. 4 is a schematic cross-sectional view of another display panel along the direction AA' in fig. 2. Based on the above embodiments, as shown in fig. 4, optionally, the light shielding layer 204 includes a first blue light absorbing layer 2041.

Illustratively, when the first light emitting device 31 is a blue LED or a blue Micro LED, the light shielding layer 204 is a first blue light absorbing layer 2041, the first blue light absorbing layer 2041 can absorb light with a wavelength of less than or equal to 450nm, and the blue light absorbing layer is used to absorb light emitted from the side of the first light emitting device 31, so as to avoid crosstalk between side high-angle divergent lights between adjacent first light emitting devices 31.

Fig. 5 is a schematic cross-sectional view of another display panel along the direction AA' in fig. 2. On the basis of the above embodiments, as shown in fig. 5, the display panel 200 further includes a second blue light absorbing layer 2042 on the side of the color conversion layer 205 away from the substrate 201.

For example, referring to fig. 5, when the first light emitting device 31 is a blue LED or a blue Micro LED, since the transmittance of the blue light is relatively high, there is a problem that part of the blue light that does not excite the color conversion layer 205 passes through the color conversion layer 205, and blue leakage occurs, which affects the display effect on one hand, and the blue light in the other direction easily damages the eyes of the user and affects health. In view of the above, a second blue light absorbing layer 2042 is disposed on the side of the color conversion layer 205 away from the substrate 201, and specifically, the second blue light absorbing layer 2042 is disposed above the red color conversion layer 205(1) and the green color conversion layer 205(2) for absorbing and blocking blue light emitted from the blue LED or the blue Micro LED. The second blue light absorption layer 2042 can absorb light with a wavelength less than 450nm, and does not affect the light emission of normal display light, so that blue light crosstalk can be effectively reduced, and the damage of blue light to eyes can be reduced.

Optionally, the first light emitting device includes a violet light emitting device and/or an ultraviolet light emitting device; the color conversion layer includes a red color conversion layer, a green color conversion layer, and a blue color conversion layer.

For example, in order to avoid the problem that blue light leaks when the un-excited utilized blue light penetrates through the color conversion layer, the first light emitting device may also be a violet light emitting device and/or an ultraviolet light emitting device, and the violet light emitting device and/or the ultraviolet light emitting device have a shorter wavelength and higher excitation efficiency than the blue light emitting device. Correspondingly, as shown in fig. 3, the color conversion layer 205 is disposed to include a red color conversion layer 205(1), a green color conversion layer 205(2), and a blue color conversion layer 205(3), where. The first light emitting device 31 excites the red color conversion layer 205(1), the green color conversion layer 205(2) and the blue color conversion layer 205(3) to emit red light, green light and blue light, respectively, and color mixing is performed to form a display image.

Fig. 6 is a schematic cross-sectional view of another display panel along the direction AA' in fig. 2. On the basis of the above implementation, referring to fig. 6, optionally, the display panel 200 further includes a plurality of light converging structures 206 located between the light emitting devices 30 and the color conversion layer 205; in a first direction, the light converging structure 206 at least partially overlaps the light emitting device 30; the first direction is perpendicular to the plane of the substrate 201 (as shown in the figure by the Y direction).

For example, as shown in fig. 6, the display panel 200 further includes a plurality of light converging structures 206 located between the light emitting devices 30 and the color conversion layer 205, the light converging structures 206 are disposed in one-to-one correspondence with the light emitting devices 30, and the light converging structures 206 may be transparent convex lens structures, which have a function of focusing light. The light converging structure 206 is arranged to at least partially overlap the light emitting device 30, as seen in the direction Y in the figure, and preferably the light converging structure 206 is arranged to completely cover the light emitting device 30. The light emitted by the light emitting device 30 is converged by the light converging structure 206 to excite the color conversion layer 205, so that the divergence angle of the light S is reduced, the divergence loss of the excitation light is reduced, the energy utilization rate of the laser light is improved, and the light emitting efficiency of the display panel is improved.

It should be noted that fig. 6 only shows a structure diagram of a display panel in which a plurality of light converging structures 206 are disposed between the light emitting device 30 and the color conversion layer 205, on the basis of fig. 4 and 5, a plurality of light converging structures 206 are disposed between the light emitting device 30 and the color conversion layer 205 for converging the emitted light of the light emitting device 30, and fig. 7 is a schematic cross-sectional structure diagram of another display panel along direction AA' in fig. 2; fig. 8 is a schematic cross-sectional view of another display panel along the direction AA' in fig. 2. Also provided by the embodiment of the present invention is a display panel, the effective effect of the light converging structure 206 in fig. 7 and 8 is the same as the effect of the light converging structure 206 in fig. 6, and the detailed description thereof is omitted here.

On the basis of the foregoing embodiment, with continuing reference to fig. 6, optionally, the insulating layer 203 covers the light converging structure 206, and the refractive index n1 of the light converging structure 206 and the refractive index n2 of the insulating layer 203 satisfy n1> n 2.

Illustratively, with continued reference to FIG. 6, by providing light converging structure 206 with a refractive index n1 that is greater than the refractive index n2 of insulating layer 203, light rays converging through light converging structure 206 are refracted at the interface of light converging structure 206 and insulating layer 203, further reducing the divergence angle of the light rays emitted by light emitting device 30. The light converging structure 206 increases the problem of crosstalk of light rays with large viewing angles in the side direction of adjacent light emitting devices, and improves the light utilization rate of the light emitting devices.

Optionally, the light emitting device 30 includes a lower light emitting surface 301 close to one side of the substrate 201; the recess 40 includes a recess floor 401 adjacent one side of the substrate 201; in the first direction, the groove bottom 401 is flush with the lower light-emitting surface 301 (not shown), or the groove bottom 401 is located on a side of the lower light-emitting surface 301 close to the substrate 201 (see fig. 3-6); the first direction (shown as the Y direction in the figure) is perpendicular to the plane of the substrate 201.

Illustratively, when the light emitting device 30 emits light in multiple directions, the depth of the groove 40 can be flexibly adjusted, and the crosstalk of the light emitted from the light emitting device 30 in the side direction at a large angle can be reduced. Specifically, as shown in the direction Y in the figure, the bottom surface 401 of the groove may be flush with the lower light-emitting surface 301 of the light-emitting device 30 on the side close to the substrate 201 (not shown in the figure), so as to ensure that the large-angle light emitted from the light-emitting device 30 in the side direction is blocked; alternatively, the bottom surface 401 of the groove may be disposed on a side closer to the substrate 201 than the lower light emitting surface 301 of the light emitting device 30, that is, the depth of the groove 40 is lower than the light emitting device 30, so as to ensure that the groove 40 completely blocks the side light emitted from the light emitting device 30.

On the basis of the above embodiment, optionally, the light emitting device 30 includes a first light emitting surface 302 near the color conversion layer 205; the light shielding layer 204 partially overlaps the first light emitting surface 302 along the light emitting direction of the light emitting device 30.

Exemplarily, referring to fig. 3, when the light emitting device 30 emits light in multiple directions, the light emitting device 30 includes a first light emitting surface 302 near one side of the color conversion layer 205, and the first light emitting surface 302 is a main light emitting surface of the light emitting device and is used for exciting the color conversion layer 205. The light shielding layer 204 partially overlaps the first light emitting surface 302 along the light emitting direction of the light emitting device 30, i.e. the light shielding layer 204 may partially cover the first light emitting surface 302 under the condition of ensuring the light efficiency of the light emitting device 30, as shown in block a in fig. 3. Through the structure, the shading effect of the shading layer 204 on the light emitting device 30 side direction large-angle divergent light can be further improved, and the crosstalk problem of the side light of the adjacent light emitting device 30 is reduced.

It should be noted that fig. 3 only shows an example that the light shielding layer 204 partially overlaps with the first light emitting surface 302 of one light emitting device 30, and further examples are not shown in their entirety here.

Alternatively, as shown in fig. 3 to 6, the insulating layer 203 includes an organic insulating layer.

For example, as shown in fig. 3 to fig. 6, after the light emitting device 30 is prepared by transferring, the light emitting device 30 is filled with an organic insulating layer, which is easy to obtain a thicker film structure during the preparation process, and can meet the trench digging depth of the groove 40. Illustratively, the insulating layer 203 may have a single-layer structure, or may have a multilayer structure prepared by stacking a plurality of times.

Optionally, the display panel further includes a driving circuit layer located between the substrate and the light emitting device, where the driving circuit layer includes a plurality of driving circuits, and the driving circuits are electrically connected to the light emitting device and used for driving the light emitting device to emit light.

Illustratively, the display panel further includes a driving circuit layer between the substrate and the light emitting device, the driving circuit layer including a plurality of driving circuits electrically connected to the light emitting device for driving the light emitting device of the display panel to emit light. Referring to fig. 3 to 8, the driving circuit includes a plurality of switching elements 50, the switching elements 50 may be Thin Film Transistors (TFTs), the TFTs include a gate electrode 501, an active layer 502, a first electrode 503 and a second electrode 504, and the gate electrode 501 is electrically connected to a gate line (not shown). The active layer 502 may be formed using polycrystalline silicon or a transparent oxide semiconductor, for example, the transparent oxide semiconductor may include zinc oxide, tin oxide, gallium indium zinc oxide, and/or indium tin oxide, but is not limited thereto. The first electrode 503 may be a source electrode, and the second electrode 504 may be a drain electrode; the gate 501 and the gate line can be made of the same material in the same layer; the thin film transistor may implement transmission of a data signal in a data line (not shown in the drawing) to an anode of the light emitting device 30, driving the light emitting device 30 of the display panel to emit light.

Further, the thin film transistor and the light emitting device 30 may be electrically connected through the connection electrode 311, as shown in fig. 3. The anode and the cathode of the light emitting device 30 and the connection electrode 311 may be transparent conductive materials, such as at least one of indium tin oxide and indium zinc oxide, so as to avoid light blocking and influence on the display effect while satisfying signal transmission. It should be noted that the thin film transistors in fig. 3-8 are only illustrated as top gate structures, and may also be bottom gate structures, which is not limited herein.

Based on the same inventive concept, an embodiment of the present invention further provides a display device, and fig. 9 is a schematic structural diagram of the display device according to the embodiment of the present invention. As shown in fig. 9, the display device 300 includes the display panel 200 according to any embodiment of the present invention, and therefore, the display device 300 according to the embodiment of the present invention has the technical effects of the technical solutions in any of the embodiments, and the structures and the explanations of the terms that are the same as or corresponding to the embodiments are not repeated herein. The display device 300 provided in the embodiment of the present invention may be a mobile phone as shown in fig. 9, and may also be any electronic product with a display function, including but not limited to the following categories: the touch screen display system comprises a television, a notebook computer, a desktop display, a tablet computer, a digital camera, an intelligent bracelet, intelligent glasses, a vehicle-mounted display, medical equipment, industrial control equipment, a touch interaction terminal and the like, and the embodiment of the invention is not particularly limited in this respect.

It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious modifications, rearrangements, combinations and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.