Display panel, display screen and electronic equipment

Abstract

The present disclosure is about a display panel, a display screen and an electronic device, wherein the display panel includes a substrate and a plurality of pixels arranged on the substrate, the pixels include a plurality of sub-pixels, the driving circuit is electrically connected to the plurality of sub-pixels, the driving circuit includes a driving control module and a driving line electrically connected to the driving control module; wherein the driving control module is arranged below some of the sub-pixels in the plurality of sub-pixels electrically connected to the driving circuit, and the driving line is electrically connected to the plurality of sub-pixels respectively. The display panel of the present disclosure improves the structure of the driving circuit layer, reduces the number of opaque driving control modules in the driving circuit layer, and by having a plurality of sub-pixels share a driving control module, the display effect of the display panel can be satisfied while the light transmittance of the display panel can be improved.

Description

Technical Field

[0001] The present disclosure relates to the field of display technology, and in particular to a display panel, a display screen and an electronic device. Background Art

[0002] As the concept of full screen develops in depth, screen integrity is increasingly valued, and the industry has been committed to solving the problem of screen display incompleteness caused by "bangs" and "widow's peak". Placing photosensitive devices (including cameras, light-sensing elements, etc.) under the screen is the most promising direction and research hotspot in the display panel industry in the next few years, which requires solving the light transmittance of the display area corresponding to the position of the photosensitive device.

[0003] The existing technology increases the transmittance of the local transparent area to meet the light sensitivity requirements of the screen by reducing the PPI (luminous pixel density) of the display panel. However, the transparent area will not emit light, which will increase the proportion of the non-luminous area. The human eye can easily identify the non-luminous square area, which is subjectively manifested as large pixel graininess and black frames between pixels, and the display effect is reduced. Summary of the invention

[0004] The present disclosure provides a display panel, a display screen and an electronic device with better light transmittance effect to solve part or all of the above technical problems.

[0005] In order to achieve the above objectives, the technical solution adopted by the present disclosure is:

[0006] According to a first aspect of an embodiment of the present disclosure, there is provided a display panel, comprising a substrate and a plurality of pixels arranged on the substrate, wherein the pixels comprise a plurality of sub-pixels, and the sub-pixels comprise a first electrode layer located on the substrate, a light-emitting layer located on the first electrode layer, and a second electrode layer located on the light-emitting layer;

[0007] The pixel further includes a driving circuit disposed between the substrate and the first electrode layer, the driving circuit being electrically connected to the plurality of sub-pixels, and the driving circuit including a driving control module and a driving trace electrically connected to the driving control module;

[0008] The driving control module is disposed below some of the sub-pixels among the plurality of sub-pixels electrically connected to the driving circuit, and the driving wiring is electrically connected to the plurality of sub-pixels respectively.

[0009] Optionally, the driving control module is disposed below any sub-pixel among the plurality of sub-pixels electrically connected to the driving circuit.

[0010] Optionally, the plurality of sub-pixels electrically connected to the same driving circuit are sub-pixels of the same luminous color.

[0011] Optionally, the driving circuit includes a first driving circuit, a second driving circuit and a third driving circuit, and the sub-pixels connected to the first driving circuit, the second driving circuit and the third driving circuit emit different colors of light;

[0012] Wherein, the driving control modules in the first driving circuit, the second driving circuit and the third driving circuit are respectively arranged under different pixels; or

[0013] The driving control modules in the first driving circuit, the second driving circuit and the third driving circuit are arranged under the same pixel.

[0014] Optionally, the display panel includes a plurality of pixel arrays, and the pixel arrays are composed of a plurality of pixels; wherein, in the pixel arrays, a plurality of pixels having the drive control module are arranged adjacent to each other.

[0015] Optionally, the display panel further includes a light shielding layer disposed between the substrate and the driving circuit, and the light shielding layer covers the plurality of pixels having the driving control module.

[0016] Optionally, the plurality of driving control modules in the driving circuit are evenly distributed in the display panel; or

[0017] The plurality of driving control modules in the driving circuit are arranged at the edge of the display panel; or

[0018] The plurality of driving control modules in the driving circuit are arranged below the pixel at the center of the display panel.

[0019] Optionally, the first electrode layer is made of non-transparent material, and the second electrode layer is made of transparent material; or the first electrode layer is an anode layer, and the second electrode layer is a cathode layer; wherein both the first electrode layer and the second electrode layer are made of transparent materials.

[0020] Optionally, the transparent material includes at least one of silver, magnesium, magnesium-silver alloy, indium tin oxide, and indium zinc oxide. According to a second aspect of an embodiment of the present disclosure, a display screen is provided, comprising: a main display area and a secondary display area; wherein the secondary display area is made of a display panel as described in any one of the above.

[0021] According to a third aspect of an embodiment of the present disclosure, there is provided an electronic device, comprising a device body, a photosensitive device and a display screen as described above, wherein the photosensitive device is arranged below the display screen; wherein the display screen is assembled on the device body, and the photosensitive device is correspondingly arranged below the secondary display area of ​​the display screen.

[0022] The technical solution provided by the embodiments of the present disclosure may include the following beneficial effects: the display panel of the present disclosure improves the structure of the driving circuit layer, reduces the number of opaque driving control modules in the driving circuit layer, and uses multiple sub-pixels to share one driving control module, thereby satisfying the display effect of the display panel while improving the light transmittance of the display panel.

[0023] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a structural schematic diagram of an electronic device shown in an exemplary embodiment of the present disclosure;

[0025] Figure 2 is a structural schematic diagram of a display screen shown in an exemplary embodiment of the present disclosure;

[0026] Figure 3 is a schematic diagram of the internal structure of a display screen shown in an exemplary embodiment of the present disclosure, wherein the gray part is the setting position of the drive control module;

[0027] Figure 4 is a cross-sectional view of a display panel shown in an exemplary embodiment of the present disclosure;

[0028] Figure 5 is a cross-sectional view of a display panel shown in yet another exemplary embodiment of the present disclosure;

[0029] Figure 6 is a schematic diagram of layout of a driving circuit in a plurality of pixels in a display panel shown in another exemplary embodiment of the present disclosure;

[0030] Figure 7 is a structural schematic diagram of a pixel array in a display panel shown in another exemplary embodiment of the present disclosure;

[0031] Figure 8 is a cross-sectional view of a display panel shown in yet another exemplary embodiment of the present disclosure;

[0032] Fig. 9 is a schematic diagram of the arrangement of sub-pixels in a display panel shown in an exemplary embodiment of the present disclosure, wherein the gray part is the location where the drive control module is set;

[0033] Fig.10 is a schematic diagram of the arrangement of sub-pixels in a display panel shown in another exemplary embodiment of the present disclosure, wherein the gray part is the setting position of the driving control module;

[0034] Fig.113 is a schematic diagram of the arrangement of sub-pixels in a display panel shown in another exemplary embodiment of the present disclosure, wherein the gray part is the setting position of the driving control module. DETAILED DESCRIPTION

[0035] The present disclosure will be described in detail below in conjunction with the specific embodiments shown in the accompanying drawings. However, these embodiments do not limit the present disclosure, and any structural, methodological, or functional changes made by a person skilled in the art based on these embodiments are all within the scope of protection of the present disclosure.

[0036] The terms used in this disclosure are for the purpose of describing specific embodiments only and are not intended to limit the disclosure. The singular forms of "a", "said" and "the" used in this disclosure and the appended claims are also intended to include plural forms unless the context clearly indicates otherwise. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more associated listed items.

[0037] Some embodiments of the present disclosure are described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the following embodiments and features in the embodiments may be combined with each other.

[0038] like Figure 1 As shown, the electronic device 200 of the embodiment of the present disclosure includes a device body 201, a photosensitive device 202 and a display screen 100. The photosensitive device 202 includes a camera, a light sensor, a photosensitive device, etc. The photosensitive device 202 is located in the electronic device 200 and is arranged below the display screen 100. Among them, the display screen 100 is assembled in the device body 201, and the display screen 100 is combined with the optical imaging system to achieve good display and imaging functions at the same time.

[0039] Among them, the electronic device 200 disclosed in the present invention can be any device with a display screen, for example, a mobile communication terminal (such as a mobile phone), a PDA (Personal Digital Assistant), a mobile computer, a tablet computer, a wearable device, etc.

[0040] like Figures 1 to 4 As shown, the display screen 100 includes a main display area 101 and a sub-display area 102, and the sub-display area 102 is made by the display panel 10 of each embodiment described below. The main display area 101 of the present disclosure is composed of a substrate 1, a driving circuit 2, a first electrode layer 3, a light-emitting layer 4 and a second electrode layer 5 stacked in sequence. The structural layers of the main display area 101 and the sub-display area 102 are basically the same, except that the sub-display area 102 is designed to be light-transmissive.

[0041] The photosensitive device 202 is correspondingly arranged below the secondary display area 102 of the display screen 100. Under the premise of ensuring normal display, the secondary display area 102 can also allow the photosensitive device 202 to shoot through the secondary display area 102 without affecting the shooting effect of the photosensitive device 202. In this way, the setting of the photosensitive device 202 under the screen is realized, and the full-screen display of the electronic device 200 can be met. Among them, the secondary display area 102 can be set at any position of the display screen 100 according to application requirements.

[0042] In a preferred embodiment, the size of the secondary display area 102 matches the photosensitive device 202, so as to reduce the size of the secondary display area 102 as much as possible, thereby reducing the size of the area not displayed on the display screen 100 when the photosensitive device 202 is shooting, thereby improving the user's visual experience during use.

[0043] It should be noted that, in an optional embodiment, the display screen 100 may also only be provided with a secondary display area 102, and the secondary display area 102 is made by the display panel 10 of each of the following embodiments.

[0044] like Figure 3 and Figure 4 As shown, the display panel 10 of the embodiment of the present disclosure includes a substrate 1 and a plurality of pixels 11 arranged on the substrate 1. The plurality of pixels 11 can be arranged on the substrate 1 in a matrix or in any shape. Each pixel 11 includes a plurality of sub-pixels 111. The plurality of sub-pixels 111 can also be arranged in a matrix or in any shape. The light emitted by each sub-pixel 111 is one of the three primary colors of red (R), green (G), and blue (B). In this way, the plurality of sub-pixels 111 can emit light of various colors through the combination of the three primary colors. Among them, the sub-pixels 111 that emit RGB can be arranged in any color matching manner, and the arrangement of RGB in the figure is only schematically shown.

[0045] The sub-pixel 111 includes a first electrode layer 3 located on a substrate 1, a light-emitting layer 4 located on the first electrode layer 3, and a second electrode layer 5 located on the light-emitting layer 4. Further, the pixel 11 of the present disclosure also includes a driving circuit 2 disposed between the substrate 1 and the first electrode layer 3, and the driving circuit 2 is electrically connected to the plurality of sub-pixels 111. When power is supplied to an appropriate voltage, the driving circuit 2 drives the charges in the first electrode layer 3 and the second electrode layer 5 to combine in the light-emitting layer 4, so that the light-emitting layer 4 generates light.

[0046] The light-emitting layer 4 includes a plurality of light-emitting structural blocks, and the plurality of light-emitting structural blocks are correspondingly arranged on the first electrode layer 3. The light-emitting layer 4 may be an OLED (Organic Light-Emitting Diode).

[0047] In the embodiment of the present disclosure, the substrate 1 may be a rigid substrate, such as a transparent substrate such as a glass substrate, a quartz substrate or a plastic substrate. The substrate 1 may also be a flexible transparent substrate, such as a polyimide (PI) film, to improve the transparency of the device.

[0048] The first electrode layer 3 is an anode layer, and the second electrode layer 5 is a cathode layer. Of course, in other embodiments, the first electrode layer 3 may also be a cathode layer, and the second electrode layer 5 may be an anode layer. In one embodiment, the first electrode layer 3 is made of a non-transparent material, and the second electrode layer 5 is made of a transparent material; in another embodiment, the first electrode layer 3 and the second electrode layer 5 are both made of transparent materials, so that the auxiliary display panel 10 can meet the needs of normal display and can also control light transmission according to the use requirements.

[0049] In the present disclosure, the transparent material may be any transparent conductive material. Specifically, it may include at least one of silver, magnesium, magnesium-silver alloy, indium tin oxide, indium zinc oxide, etc. For example, it may be silver-doped indium tin oxide or silver-doped indium zinc oxide. Preferably, the transparent material for preparing the first electrode layer 3 and the second electrode layer 5 is silver-doped indium tin oxide or silver-doped indium zinc oxide, so as to reduce the resistance of the first electrode layer 3 and the second electrode layer 5 while ensuring the high light transmittance of the display panel 10.

[0050] The driving circuit 2 of the present disclosure includes a driving control module 21 and a driving wire 22 electrically connected to the driving control module 21. The driving control module 21 transmits a driving signal through the driving wire 22, and the driving control module 21 is used to drive the charges in the first electrode layer 3 and the second electrode layer 5 to combine in the light-emitting layer 4, so that the light-emitting layer 4 generates light.

[0051] Specifically, the driving control module 21 includes one or more control switches, resistors, capacitors and other components. The driving control module 21 connects multiple control switches in series or in parallel as needed. Wherein, the driving circuit 2 is a pixel 11 circuit such as a 2T1C circuit, a 3T1C circuit, a 3T2C circuit, a 7T1C circuit, or a 7T2C circuit.

[0052] The control switch may be a thin film transistor TFT, which may be an oxide thin film transistor or a low temperature polysilicon thin film transistor (LTPS TFT), and the thin film transistor is preferably an indium gallium zinc oxide thin film transistor (IGZO TFT). Alternatively, the control switch may also be a metal oxide semiconductor field effect transistor (Metal-Oxide-SemiconductorField-Effect Transistor, abbreviated as MOSFET), or other elements with switching characteristics in the prior art, such as an insulated gate bipolar transistor (IGBT), etc. As long as the electronic elements can realize the switching function in the present embodiment and can be integrated into the display panel 10, they all fall within the protection scope of the present application.

[0053] The driving control module 21 is disposed below some of the sub-pixels 111 among the multiple sub-pixels 111 electrically connected to the driving circuit 2, and the driving wiring 22 is electrically connected to the multiple sub-pixels 111 respectively to drive the multiple sub-pixels 111 to emit light. In this embodiment, since the driving module is not light-transmissive, the multiple sub-pixels 111 share one driving circuit 2, so as to minimize the non-light-transmissive area in the display panel 10. The present disclosure reduces the number and occupied area of ​​the driving circuit 2 by sharing one driving circuit 2 by multiple sub-pixels 111, thereby further enhancing the light-transmitting effect of the display panel 10.

[0054] Furthermore, in order to reduce the size of the driving circuit 2, the driving control module 21 of the present disclosure is disposed below any sub-pixel 111 of the plurality of sub-pixels 111 electrically connected to the driving circuit 2. Furthermore, in the embodiment of the present disclosure, the plurality of sub-pixels 111 electrically connected to the same driving circuit 2 are sub-pixels 111 of the same luminous color, and such a configuration is conducive to the control of the driving circuit 2 and the regulation of the display of the display panel 10.

[0055] like Figure 4 and Figure 5 As shown, the driving circuit 2 includes a first driving circuit 211, a second driving circuit 212 and a third driving circuit 213. The sub-pixels 111 connected to the first driving circuit 211, the second driving circuit 212 and the third driving circuit 213 emit different luminous colors. For example, the multiple sub-pixels 111 connected to the first driving circuit 211 emit red (R) light, the multiple sub-pixels 111 connected to the second driving circuit 212 emit green (G) light, and the multiple sub-pixels 111 connected to the third driving circuit 213 emit blue (B) light.

[0056] In one embodiment, if Figure 4As shown, the driving control modules in the first driving circuit 211, the second driving circuit 212 and the third driving circuit 213 are arranged under different pixels 11. This arrangement weakens the opacity of the driving control module 21 in the driving circuit 2, thereby improving the overall light transmittance effect of the display panel 10 and avoiding the aggregation of multiple driving control modules 21, which causes more obvious black spots on the display panel 10.

[0057] In yet another embodiment, Figure 5 As shown, the driving control modules in the first driving circuit 211, the second driving circuit 212 and the third driving circuit 213 are arranged under the same pixel 11, so that the non-transparent driving control modules 21 are arranged in a centralized manner and avoid the shooting area of ​​the photosensitive device, thereby enhancing the light transmittance of other positions of the display panel 10 and improving the shooting effect of the photosensitive device. Figure 6 As shown, in one example, for example: in 2*2 pixels 11, the driving control module 21 is set under one of the pixels 11, and the other three pixels 11 are connected through the driving wiring 22, so that one driving control module 21 controls four pixels 11, which can meet the display effect of the display panel 10; the other three pixels 11 have better light transmittance when not displayed, which is beneficial to the shooting of the photosensitive device.

[0058] like Figure 7 As shown, in this embodiment, the display panel 10 includes a plurality of pixel arrays, each pixel array is composed of a plurality of pixels 11. In each pixel array, a plurality of pixels 11 having a driving control module 21 are arranged adjacent to each other, and the plurality of pixels 11 having a driving control module 21 are arranged such that the plurality of pixels 11 having a driving control module 21 are located in the middle of the pixel array. Figure 7 As shown, the pixel array is composed of four 2*2 pixels 11, in which the driving control module 21 is arranged under one of the pixels 11, and the other three pixels 11 are connected by driving wiring 22. In this example, the pixels 11 with the driving control module 21 among the four 2*2 pixels are concentrated in the middle of the pixel array, so as to avoid the formation of stray light when the outgoing light of the entire display panel 10 converges on the imaging surface due to scattering or reflection caused by the dispersed driving circuits 2, thereby reducing the overall imaging quality of the display panel 10.

[0059] At present, in the display panel 10, since the incident light is scattered or reflected by the driving circuit 2 or other opaque materials, the outgoing light will deviate from the direction of the incident light, and the outgoing light will form stray light when converging on the imaging surface, so that the imaging quality of the display panel 10 is reduced. Figure 8As shown, the display panel 10 of the present disclosure further includes a light shielding layer 7 disposed between the substrate 1 and the driving circuit 2, and the light shielding layer 7 covers a plurality of pixels 11 having a driving control module 21. The provision of the light shielding layer 7 can effectively reduce scattering or imaging quality loss caused by scattering, and improve the resolution of the display panel 10.

[0060] The overall layout of the driving circuit 2 on the display panel 10 includes at least the following three embodiments.

[0061] In one embodiment, if Fig. 9 As shown, the multiple driving control modules 21 in the driving circuit 2 are evenly distributed in the display panel 10. This arrangement weakens the opacity of the driving control modules 21 in the driving circuit 2, thereby improving the overall light transmittance of the display panel 10 and avoiding the aggregation of multiple driving control modules 21, which causes more obvious black spots on the display panel 10.

[0062] In yet another embodiment, Fig.10 As shown, the multiple driving control modules 21 in the driving circuit 2 can also be arranged at the edge of the display panel 10, so that the driving control module 21 is located outside the lens in the molding component, which can help improve the photosensitivity of the photosensitive device.

[0063] In another embodiment, if Fig.11 As shown, the multiple driving control modules 21 in the driving circuit 2 are arranged below the pixel 11 at the center of the display panel 10, so that the opaque driving control modules 21 are centrally arranged, which is beneficial to improving the overall imaging quality of the photosensitive device.

[0064] The display panel disclosed in the present invention improves the structure of the driving circuit layer, reduces the number of opaque driving control modules in the driving circuit layer, and uses multiple sub-pixels to share one driving control module, which can meet the display effect of the display panel while improving the light transmittance of the display panel.

[0065] The above-mentioned embodiments are exemplified by taking the under-screen camera as an example. Of course, the display panel with light-transmitting effect disclosed in the present invention is not limited to the application of the under-screen camera, but can also be applied to light sensing devices such as light sensors and under-screen fingerprint unlocking, which are not specifically limited here.

[0066] Those skilled in the art will readily appreciate other embodiments of the present disclosure after considering the specification and practicing the disclosure disclosed herein. This application is intended to cover any modification, use or adaptation of the present disclosure, which follows the general principles of the present disclosure and includes common knowledge or customary techniques in the art that are not disclosed in the present disclosure. The specification and examples are intended to be exemplary only, and the true scope and spirit of the present disclosure are indicated by the claims of the present application.

[0067] It should be understood that the present disclosure is not limited to the exact structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A display panel, characterized in that: The invention comprises a substrate and a plurality of pixels arranged on the substrate, wherein the pixels comprise a plurality of sub-pixels, and the light emitted by each sub-pixel is one of red, green or blue; the sub-pixels comprise a first electrode layer located on the substrate, a light-emitting layer located on the first electrode layer, and a second electrode layer located on the light-emitting layer; The pixel further includes a driving circuit disposed between the substrate and the first electrode layer, the driving circuit being electrically connected to the plurality of sub-pixels, and the driving circuit including a driving control module and a driving trace electrically connected to the driving control module; The driving control module is disposed below some of the sub-pixels among the plurality of sub-pixels electrically connected to the driving circuit, and the driving wiring is electrically connected to the plurality of sub-pixels respectively; The driving circuit includes a first driving circuit, a second driving circuit and a third driving circuit, and the sub-pixels connected to the first driving circuit, the second driving circuit and the third driving circuit emit different colors of light; Wherein, the driving control modules in the first driving circuit, the second driving circuit and the third driving circuit are respectively arranged under different pixels; or The driving control modules in the first driving circuit, the second driving circuit and the third driving circuit are arranged under the same pixel.

2. The display panel according to claim 1, characterized in that: The driving control module is disposed below any sub-pixel among the plurality of sub-pixels electrically connected to the driving circuit.

3. The display panel according to claim 1 or 2, characterized in that: The plurality of sub-pixels electrically connected to the same one of the first drive circuit, the second drive circuit, and the third drive circuit are sub-pixels of the same luminescent color.

4. The display panel according to claim 1, characterized in that: The display panel includes a plurality of pixel arrays, and the pixel arrays are composed of a plurality of pixels; wherein, in the pixel arrays, a plurality of pixels having the driving control module are arranged adjacent to each other.

5. The display panel according to claim 4, characterized in that: The display panel further includes a light shielding layer disposed between the substrate and the driving circuit, and the light shielding layer covers the plurality of pixels having the driving control module.

6. The display panel according to claim 1, characterized in that: The plurality of driving control modules in the driving circuit are evenly distributed in the display panel; or The plurality of driving control modules in the driving circuit are arranged at the edge of the display panel; or The plurality of driving control modules in the driving circuit are arranged below the pixel at the center of the display panel.

7. The display panel according to claim 1, characterized in that: The first electrode layer is an anode layer, and the second electrode layer is a cathode layer; wherein the first electrode layer is made of a non-transparent material, and the second electrode layer is made of a transparent material; or the first electrode layer and the second electrode layer are both made of transparent materials.

8. The display panel according to claim 7, characterized in that: The transparent material includes at least one of silver, magnesium, magnesium-silver alloy, indium tin oxide, and indium zinc oxide.

9. A display screen, characterized in that: include: A main display area and a sub-display area; wherein the sub-display area is made by a display panel as described in any one of claims 1-8.

10. An electronic device, characterized in that: It comprises a device body, a photosensitive device and a display screen as claimed in claim 9, wherein the photosensitive device is arranged below the display screen; wherein the display screen is assembled on the device body, and the photosensitive device is correspondingly arranged below the secondary display area of ​​the display screen.

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