Display module and display device

Abstract

The utility model discloses a display module and a display device.The display module comprises a screen body and an infrared device, the screen body comprises a display area and a non-display area located on the periphery of the display area, the infrared device is located on the backlight side of the screen body and comprises a transmitting end and a receiving end, and the orthographic projection of the transmitting end on the screen body is located outside the display area. In this way, the display effect of the screen body can be prevented from being affected by the transmitting end of the infrared device, and therefore the fault rate of the screen body is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of display, in particular to a display module and a display device. BACKGROUND

[0002] With the development of display technology, face recognition technology gradually replaces fingerprint recognition technology and becomes the most popular and highest security level biometric technology. In a long-term research and development process, the applicant of the present application finds that face recognition devices affect the display effect in the display panel, resulting in flickering and other adverse display phenomena of the display device. CONTENT OF THE UTILITY MODEL

[0003] The technical problem solved by the present application is to provide a display module and a display device, which can avoid the influence of the emission end of the infrared device on the display effect of the screen body, thereby reducing the failure rate of the screen body.

[0004] To solve the above technical problem, one technical solution adopted by the present application is to provide a display module, comprising: a screen body comprising a display area and a non-display area located at the periphery of the display area; an infrared device located at the backlight side of the screen body, comprising an emission end and a receiving end, wherein the orthographic projection of the emission end on the screen body is located outside the display area.

[0005] Preferably, the non-display area comprises a first sub-area located at the top of the display area, and the orthographic projection of the emission end on the screen body is located in the first sub-area.

[0006] Preferably, the display module further comprises a frame surrounding the screen body, wherein the frame is provided with an opening corresponding to the emission end.

[0007] Preferably, the screen body comprises a substrate, a driving layer and a light-emitting layer which are sequentially stacked, the driving layer comprises a pixel circuit, the light-emitting layer comprises a light-emitting pixel, and the pixel circuit and the light-emitting pixel are electrically connected, wherein the light-emitting pixel comprises a first light-emitting pixel located in the first sub-display area, and the light-emitting pixel comprises a first pixel circuit electrically connected with the first light-emitting pixel.

[0008] The first pixel circuit is located outside the first sub-display area.

[0009] The first pixel circuit is located outside the first sub-display area.

[0010] The driving layer further includes a first trace located in the first sub-display area, wherein the material of the first trace is a transparent material; preferably, the first trace is electrically connected with the first light-emitting pixel and the first pixel circuit, or the first trace includes at least one of a first power line, a second power line and a reset trace which are electrically connected with the first pixel circuit; preferably, the material of the first trace includes at least one of indium tin oxide, indium zinc oxide and indium gallium zinc oxide.

[0011] The display module further includes a color camera located at the backlight side of the screen body, wherein the orthographic projection of the color camera on the screen body is located in the second sub-display area of the display area.

[0012] The first sub-display area is multiplexed as the second sub-display area, or the first sub-display area and the second sub-display area are arranged in a spaced manner.

[0013] To solve the above technical problems, another technical solution adopted by the present application is to provide a display device including the display module as described in any of the above.

[0014] The present application has the following beneficial effects: Different from the prior art, the infrared device of the present application is arranged at the backlight side of the screen body, the infrared light emitted by the emitting end is received by the receiving end after reflection, and since the orthographic projection of the emitting end on the screen body is located outside the display area, the infrared light emitted by the emitting end does not penetrate the screen body in the display area, which can avoid the influence of the infrared light on the transistors in the screen body, thereby avoiding the phenomenon of poor display of the display module. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor on the basis of these drawings. Among them:

[0016] Figure 1 is a structural schematic diagram of an embodiment of the display module of the present application;

[0017] Figure 2 is a structural schematic diagram of an embodiment of the display module of the present application; Figure 1 is a schematic diagram of the relative positions of the screen body and the infrared device in the embodiment;

[0018] Figure 3 is a structural schematic diagram of an embodiment of the display module of the present application; Figure 1 is a schematic diagram of the relative positions of the screen body and the infrared device in the embodiment;

[0019] Figure 4 is a structural schematic diagram of an embodiment of the display module of the present application; Figure 1 is a structural schematic diagram of an embodiment of the display module of the present application;

[0020] Figure 5 is a structural schematic diagram of an embodiment of the display module of the present application; Figure 1 is a structural schematic diagram of an embodiment of the display module of the present application;

[0021] Figure 6 is a structural schematic diagram of an embodiment of the display module of the present application. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of protection of the present application.

[0023] In the prior art, in order to reduce the frame area of the display device and realize a full-screen, the current trend is to arrange the infrared light emitting device and the infrared light receiving device below the screen body, so that the infrared light emitted by the infrared light emitting device is irradiated onto an object above the display panel after penetrating the display panel, and the infrared light reflected by the object is collected by the infrared light receiving device after penetrating the display panel again. However, since the driving layer of the display panel, i.e. the pixel circuit of each pixel, has a transistor, and the transistor is a light-sensitive device, for example, the carrier transport characteristics of the channel region of the active layer of the transistor will shift with the extension of the light exposure time, resulting in the shift of the transmission characteristics of the transistor, and causing the display device to have flickering and other undesirable display phenomena. The present application proposes a display module to solve the above problems, as follows:

[0024] Referring to Figure 1 and Figure 2The display module 100 comprises a screen body 1 and an infrared device 2. The screen body 1 comprises a display area 11 and a non-display area 12 located at the periphery of the display area 11. The infrared device 2 is located at the backlight side of the screen body 1 and comprises an emitting end 21 and a receiving end 22. The orthographic projection of the emitting end 21 on the screen body 1 is located outside the display area 11, and the infrared light emitted by the emitting end 21 cannot pass through the display area 11.

[0025] Specifically, the screen body 1 can be an OLED (Organic Light-Emitting Diode) screen body or an AMOLED (Active-matrix Organic Light-Emitting Diode) screen body. The specific type of the screen body 1 is not limited in the present application. The display area 11 is used for displaying pictures and usually comprises light-emitting pixels, driving circuits and the like. The non-display area 12 is not used for displaying pictures and usually comprises peripheral circuits and the like.

[0026] The infrared device 2 is arranged at the backlight side of the screen body 1. The infrared light emitted by the emitting end 21 is received by the receiving end 22 after reflection. Since the orthographic projection of the emitting end 21 on the screen body 1 is located outside the display area 11, the infrared light emitted by the emitting end 21 does not penetrate the screen body 1 in the display area 11, so that the infrared light can not affect the transistors in the screen body 1, thereby avoiding the display module 100 from displaying abnormally.

[0027] Continuing to refer to Figure 1 and Figure 2 , the orthographic projection of the emitting end 21 on the screen body 1 is located on the screen body 1 and in the non-display area 12. Specifically, the infrared light emitted by the emitting end 21 passes through the screen body 1 in the non-display area 12. It can be understood that, compared with being arranged at other positions outside the display area 11, arranging the emitting end 21 in the non-display area 12 can facilitate reducing the overall size of the display module 100 and realizing a full-screen at the same time.

[0028] In an embodiment, continuing to refer to Figure 1 , the non-display area 12 comprises a first sub-area 121 located at the top of the display area 11. The orthographic projection of the emitting end 21 on the screen body 1 is located in the first sub-area 121, i.e. the orthographic projection of the emitting end 21 on the screen body 1 is located at the upper part of the display area 11. Of course, in other embodiments, the orthographic projection of the emitting end 21 on the screen body 1 can also be located in a second sub-area at the lower part of the display area 11, or a third sub-area at the left side of the display area 11 or a fourth sub-area at the right side of the display area 11.

[0029] Referring to Figure 3The normal projection of the emitting end 21 on the screen body 1 is located outside the screen body 1, and specifically, different from the above embodiment, the emitting end 21 is arranged outside the screen body 1, so that the screen body 1 can realize the display effect of a full screen.

[0030] In an embodiment, the display module 100 further comprises a frame (not shown in the figure), which is arranged around the screen body 1, wherein the frame is provided with an opening corresponding to the emitting end 21, and specifically, the frame protects the screen body 1, and the infrared light emitted by the emitting end 21 is emitted through the opening in the frame, so as to avoid affecting the transistors on the display area 11 in the screen body 1, thereby reducing the phenomenon of display defects of the display module 100, and reducing the wiring difficulty, thereby reducing the processing difficulty.

[0031] Continuing to refer to Figures 1 to 3 In an embodiment, the normal projection of the receiving end 22 on the screen body 1 is located in the first sub-display area 111 in the display area 11. Specifically, the first sub-display area 111 is located in the display area 11, and specifically can be located in the upper half of the display area 11, and the normal projection of the receiving end 22 on the screen body 1 is located in the first sub-display area 111, so as to facilitate receiving the infrared light reflected by the user.

[0032] Of course, in other embodiments, the normal projection of the receiving end 22 on the screen body 1 can also be located in the non-display area 12, or the normal projection of the receiving end 22 on the screen body 1 can also be located outside the screen body 1.

[0033] In an application scenario, referring to Figure 4 and Figure 5 The screen body 1 comprises a substrate 13, a driving layer 14 and a light-emitting layer 15 which are sequentially stacked, the driving layer 14 comprises a pixel circuit 141, and the light-emitting layer 15 comprises a light-emitting pixel 151, the pixel circuit 141 is electrically connected with the light-emitting pixel 151, wherein the light-emitting pixel 151 comprises a first light-emitting pixel 152 located in the first sub-display area 111, and the pixel circuit 141 comprises a first pixel circuit 142 electrically connected with the first light-emitting pixel 152. Specifically, the substrate 13 has a supporting effect, and its material can be glass or polyimide. The pixel circuit 141 can be a circuit with a structure of 7T1C, and the specific structure of the pixel circuit 141 is not limited in the present application, and the pixel circuit 141 is used to drive the light-emitting pixel 151 electrically connected thereto to emit light.

[0034] Referring to Figure 4The first pixel circuit 142 is located in the first sub-display area 111, and the orthographic projection of the first light-emitting pixel 152 on the substrate 13 covers the orthographic projection of the first pixel circuit 142 on the substrate 13. Specifically, at this time, the first light-emitting pixel 152 and the first pixel circuit 142 are both located in the first sub-display area 111, but the orthographic projection of the first pixel circuit 142 on the substrate 13 is covered by the orthographic projection of the first light-emitting pixel 152 on the substrate 13, which is equivalent to compressing and placing the first pixel circuit 142 under the corresponding first light-emitting pixel 152, so as to ensure that the first sub-display area 111 has high transmittance, and the receiving end 22 can receive the reflected infrared light, thereby improving the accuracy of identification of the infrared device 2.

[0035] In an embodiment, the light-emitting pixel 151 comprises a first electrode, a light-emitting material layer and a second electrode which are sequentially stacked in the direction away from the substrate 13, wherein the orthographic projection of the first electrode on the substrate 13 in the first light-emitting pixel 152 covers the orthographic projection of the first pixel circuit 142 on the substrate 13.

[0036] Specifically, this arrangement is equivalent to compressing the area of the first pixel circuit 142, so that the first electrode better covers the first pixel circuit 142, thereby increasing the transmittance of the display module 100.

[0037] In an embodiment, the first electrode is an anode. In other embodiments, the first electrode can also be a cathode.

[0038] Referring to Figure 5 In an embodiment, the first pixel circuit 142 is located outside the first sub-display area 111. Specifically, unlike the above-mentioned embodiment, the first pixel circuit 142 is arranged outside the first sub-display area 111, and this arrangement can increase the transmittance of the display module 100 in the first sub-display area 111.

[0039] In an embodiment, the driving layer 14 further comprises a first wire located in the first sub-display area 111, wherein the material of the first wire is a transparent material. Specifically, the material of the first wire in the first sub-display area 111 is set to be a transparent material, which can increase the transmittance of the first sub-display area 111 and facilitate the receiving end 22 to better receive infrared light.

[0040] In an embodiment, the first wire electrically connects the first light emitting pixel 152 and the first pixel circuit 142, that is, the first wire electrically connecting the first light emitting pixel 152 and the first pixel circuit 142 is set as a transparent wire to improve the transmittance of the first sub-display area 111. In another embodiment, the first wire includes at least one of the first power line VDD, the second power line VSS, and the reset wire Vref electrically connected to the first pixel circuit 142, that is, the first wire includes one or more of the first power line, the second power line, and the reset wire electrically connected to the first pixel circuit 142.

[0041] In an embodiment, when the first pixel circuit 142 is located in the first sub-display area 111, the first power line VDD, the second power line VSS, and the reset wire Vref electrically connected to the first pixel circuit 142 are all set as transparent wires.

[0042] In another embodiment, when the first pixel circuit 142 is located outside the first sub-display area 111, the wire between the first pixel circuit 142 and the first light emitting pixel 152 is set as a transparent wire.

[0043] In other embodiments, the wire between the first pixel circuit 142 and the first light emitting pixel 152 is set as a transparent wire, and the first power line VDD, the second power line VSS, and the reset wire Vref electrically connected to the first pixel circuit 142 are also set as transparent wires.

[0044] In other embodiments, for any wire located in the first sub-display area 111, the wire is set as a transparent wire to further improve the high transmittance of the first sub-display area 111.

[0045] In an embodiment, the material of the first wire includes at least one of indium tin oxide, indium zinc oxide, and indium gallium zinc oxide, that is, the material of the first wire includes one or more of indium tin oxide, indium zinc oxide, and indium gallium zinc oxide. For example, the material of the first wire can be indium tin oxide, and the material of the first wire can be indium tin oxide and indium zinc oxide.

[0046] Continuing to refer to Figure 1 and Figure 2In an embodiment, the display module 100 further comprises a color camera 3 located at the backlight side of the screen body 1, wherein the orthographic projection of the color camera 3 on the screen body 1 is located at the second sub-display area 112 of the display area 11. Specifically, the color camera 3 can take photos or videos of the user, collect images of the user, and realize face recognition. In an application scenario, the emission end 21 emits infrared light towards the user, for example, projects the infrared light towards the face of the user, and then the receiver device such as the receiving end 22 and the color camera 3 in the present application captures the projected face to identify the distortion of the projected point array, restores the 3D information of the face, and compares the restored 3D information with the saved 3D information to determine whether the user information is consistent.

[0047] In an embodiment, the first sub-display area 111 is multiplexed as the second sub-display area 112, that is, the projection of the receiving end 22 on the substrate 13 and the projection of the color camera 3 on the substrate 13 are located in the same area, that is, the receiving end 22 and the color camera 3 are arranged adjacent to each other.

[0048] In another embodiment, the first sub-display area 111 and the second sub-display area 112 are arranged in a spaced manner, that is, the receiving end 22 and the color camera 3 are arranged in a spaced manner.

[0049] In the present application, the shape of the first sub-display area 111 and the second sub-display area 112 is not limited, and the first sub-display area 111 can be a circular area or a rectangular area, and the second sub-display area 112 can be a circular area or a rectangular area.

[0050] Referring to Figure 6 , the display device 200 comprises the display module 100 according to any one of the above embodiments. The display device 200 can be used in electronic devices such as televisions, mobile phones, computers, stage screens, etc., and the type of the display device 200 is not limited in the present application.

[0051] The above description is only an embodiment of the present application, and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation based on the content of the specification and drawings, or direct or indirect application in other related technical fields, is also included in the patent protection scope of the present application.

Claims

1. A display module, characterized by The display module comprises: a screen body comprising a display area and a non-display area located at the periphery of the display area; an infrared device located at the backlight side of the screen body, comprising an emitting end and a receiving end, wherein the orthographic projection of the emitting end on the screen body is located outside the display area.

2. The display module of claim 1, wherein, The orthographic projection of the emitting end on the screen body is located on the screen body and in the non-display area.

3. The display module of claim 2, wherein, The non-display area comprises a first sub-area located at the top of the display area, and the orthographic projection of the emitting end on the screen body is located in the first sub-area.

4. The display module of claim 1, wherein, The orthographic projection of the emitting end on the screen body is located outside the screen body.

5. The display module of claim 4, wherein, The display module further comprises a frame surrounding the screen body, wherein the frame is provided with an opening corresponding to the emitting end.

6. The display module of claim 1, wherein, The orthographic projection of the receiving end on the screen body is located in a first sub-display area in the display area.

7. The display module of claim 6, wherein, The screen body comprises a substrate, a driving layer and a light-emitting layer which are sequentially stacked, the driving layer comprises a pixel circuit, and the light-emitting layer comprises a light-emitting pixel, wherein the pixel circuit is electrically connected with the light-emitting pixel, the light-emitting pixel comprises a first light-emitting pixel located in the first sub-display area, and the pixel circuit comprises a first pixel circuit electrically connected with the first light-emitting pixel.

8. The display module of claim 7, wherein, The first pixel circuit is located in the first sub-display area, and the orthographic projection of the first light-emitting pixel on the substrate covers the orthographic projection of the first pixel circuit on the substrate.

9. The display module of claim 8, wherein, The light-emitting pixel comprises a first electrode, a light-emitting material layer and a second electrode which are sequentially stacked in the direction away from the substrate, wherein the orthographic projection of the first electrode on the substrate in the first light-emitting pixel covers the orthographic projection of the first pixel circuit on the substrate.

10. The display module of claim 9, wherein, The first electrode is an anode.

11. The display module of claim 7, wherein, The first pixel circuit is located outside the first sub-display area.

12. The display module of claim 7, wherein, The driving layer further comprises a first trace located in the first sub-display area, wherein the material of the first trace is a transparent material.

13. The display module of claim 12, wherein, The first trace electrically connects the first light-emitting pixel and the first pixel circuit, or the first trace comprises at least one of a first power line, a second power line and a reset trace which are electrically connected with the first pixel circuit.

14. The display module of claim 12, wherein, The material of the first trace comprises at least one of indium tin oxide, indium zinc oxide and indium gallium zinc oxide.

15. The display module of claim 6, wherein, The display module further comprises: a color camera located at the backlight side of the screen body, wherein the orthographic projection of the color camera on the screen body is located in a second sub-display area of the display area.

16. The display module of claim 15, wherein, The first sub-display area is multiplexed as the second sub-display area, or the first sub-display area and the second sub-display area are arranged at intervals.

17. A display device comprising: The display module comprises any one of claims 1 to 16.

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