Display device and electronic apparatus

Abstract

The utility model relates to a display device and electronic equipment, and relates to the technical field of electronic equipment. The display device comprises a display panel, a driving circuit and a photoelectric sensing assembly. The display panel is provided with a display area and a peripheral area located outside the display area. The driving circuit is arranged on the display panel and located in the peripheral area. The driving circuit is used for sending a synchronizing signal when each frame is refreshed; the photoelectric sensing assembly is arranged on the display panel and is overlapped with the display area; the photoelectric sensing assembly comprises a light emitting assembly and a light sensing assembly; the light-emitting assembly is connected with the driving circuit and used for emitting induction light after receiving the synchronizing signal. According to the display device, the influence of the induction light on the display panel can be reduced, so that the display device has a better display effect.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of electronic devices, and in particular, to a display device and an electronic device. BACKGROUND

[0002] In electronic devices such as mobile phones and tablet computers, a photoelectric sensing component is one of the main components for realizing the anti-mis-touch function. The photoelectric sensing component is arranged in a display device and is used for emitting sensing light. However, the sensing light can interfere with the display of the display panel, causing unexpected bright spots on the display panel, which seriously affects the display effect of the display device and the electronic device. CONTENT OF THE UTILITY MODEL

[0003] The present disclosure provides a display device and an electronic device, which have good display effects.

[0004] According to an aspect of the present disclosure, a display device is provided, comprising:

[0005] a display panel having a display area and a peripheral area located outside the display area;

[0006] a driving circuit arranged on the display panel and located in the peripheral area; the driving circuit is configured to send a synchronization signal at the end of each frame refresh;

[0007] a photoelectric sensing component arranged on the display panel and overlapping the display area; the photoelectric sensing component comprises a light-emitting component and a light-sensing component; the light-emitting component is connected to the driving circuit and is configured to emit sensing light after receiving the synchronization signal.

[0008] In an exemplary embodiment of the present disclosure, the light-emitting component comprises:

[0009] an infrared light-emitting element configured to emit infrared sensing light;

[0010] a control circuit connected to the infrared light-emitting element and the driving circuit, configured to receive the synchronization signal and control the infrared light-emitting element to emit infrared sensing light after receiving the synchronization signal.

[0011] In an exemplary embodiment of the present disclosure, the time when the light-emitting component emits the sensing light is spaced apart from the time when the synchronization signal is received by a preset time length.

[0012] In an exemplary embodiment of the present disclosure, the display device further comprises:

[0013] a control circuit board arranged on the backlight side of the display panel and connected to the driving circuit and the light-emitting component, configured to set the preset time length.

[0014] In an example embodiment of the present disclosure, the refresh rate of the display panel is negatively correlated with the preset time length.

[0015] In an example embodiment of the present disclosure, the display panel comprises:

[0016] a plurality of pixel circuits, the plurality of pixel circuits being arranged in an array along a row direction and a column direction;

[0017] a plurality of data lines, the plurality of data lines being arranged alternately with a plurality of columns of the pixel circuits along the row direction, and the data lines extending along the column direction; one of the data lines being connected to one of the columns of the pixel circuits, and at least part of the data lines being connected to the driving circuit.

[0018] In an example embodiment of the present disclosure, the display panel comprises:

[0019] a driving backplane, the pixel circuits and the data lines being arranged in the driving backplane;

[0020] a plurality of light emitting devices arranged in an array along the row direction and the column direction on one side of the driving backplane and connected to the pixel circuits; a light emitting component being arranged in the driving backplane away from the light emitting devices; and a light sensing component being arranged in the same layer as the light emitting devices.

[0021] In an example embodiment of the present disclosure, the display panel comprises:

[0022] a driving backplane, the pixel circuits and the data lines being arranged in the driving backplane;

[0023] a plurality of light emitting devices arranged in an array along the row direction and the column direction on one side of the driving backplane and connected to the pixel circuits; a light emitting component being arranged in the driving backplane; and a light sensing component being arranged in the same layer as the light emitting devices.

[0024] In an example embodiment of the present disclosure, the light emitting device comprises a first electrode, a light emitting layer and a second electrode arranged in sequence along a direction away from the driving backplane.

[0025] The light sensing component comprises a first sensing electrode, a photoelectric conversion layer and a second sensing electrode arranged in sequence along a direction away from the driving backplane; the first electrode is arranged in the same layer as the first sensing electrode, the light emitting layer is arranged in the same layer as the photoelectric conversion layer, and the second electrode is arranged in the same layer as the second sensing electrode.

[0026] In an example embodiment of the present disclosure, the second electrode and the second sensing electrode are in an integrated structure.

[0027] According to one aspect of the present disclosure, an electronic device is provided, comprising the display device as described in any one of the above.

[0028] The display device and the electronic device of the present disclosure can utilize the driving circuit to send a synchronization signal at the end of each frame refresh, and the light emitting component emits the sensing light after receiving the synchronization signal, so that the light emitting component emits the sensing light in the process of the next frame refresh of the display panel, avoiding the interference of the sensing light on the display of the display panel, avoiding the appearance of unexpected bright spots on the display panel, and making the display device and the electronic device have better display effect. Meanwhile, the driving circuit is arranged in the peripheral area of the display panel, avoiding the blocking of the driving circuit on the display of the display panel, and further improving the display effect of the display device and the electronic device.

[0029] It should be understood that the foregoing general description and the following detailed description are only exemplary and explanatory, and are not limiting to the present disclosure. BRIEF DESCRIPTION OF DRAWINGS

[0030] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments consistent with the present disclosure and serve to explain the principles of the present disclosure. It is apparent that the accompanying drawings of the following description are only some embodiments of the present disclosure, and other drawings can be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0031] Figure 1 A schematic view of a viewing angle of an embodiment of the display device of the present disclosure.

[0032] Figure 2 A schematic view of a viewing angle of an embodiment of the driving back plate of the present disclosure.

[0033] Figure 3 A schematic view of a viewing angle of an embodiment of the display panel of the present disclosure.

[0034] Figure 4 A schematic view of a viewing angle of an embodiment of the present disclosure. Figure 1 A-A sectional view of the display device.

[0035] Figure 5 A-A sectional view of the display device. Figure 1 A-A sectional view of the display device.

[0036] Explanation of reference signs:

[0037] 1, display device; 10, display panel; 10a, display area; 10b, peripheral area; 101, pixel circuit; 102, data line; 103, control line; 104, driving backplane; 105, light emitting device; 1051, first electrode; 1052, light emitting layer; 1053, second electrode; 11, driving circuit; 12, photoelectric sensing component; 121, light emitting component; 1211, infrared light emitting element; 1212, control circuit; 122, light sensing component; 1221, first sensing electrode; 1222, photoelectric conversion layer; 1223, second sensing electrode; 13, control circuit board; 14, switching circuit. DETAILED DESCRIPTION

[0038] Example embodiments now will be described more fully hereinafter with reference to the accompanying drawings; however, these embodiments can be implemented in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the example embodiments to those skilled in the art. Like reference numerals refer to like elements throughout the drawings, and thus description of the same will be simplified or omitted. In addition, the drawings are only schematic and are not necessarily drawn to scale.

[0039] The terms "one", "a", "the", "said", and "at least one" are used to mean that "one or more" of something is present; the term "includes" and the term "including" means the inclusion of something is open-ended and not limiting; the term "first", "second", and the like are used to denote a number of elements, not a number of times an element is recited; and the term "plurality" is used to denote a number of elements, not a number of times an element is recited.

[0040] The A feature and the B feature herein "overlap" means that the orthographic projection of the A feature on a plane and the orthographic projection of the B feature on the plane at least partially coincide. The orthographic projection means that the projection is made along the direction perpendicular to the plane toward the plane. The plane can be any surface of the display panel perpendicular to the light-out direction, such as the surface of the driving backplane, etc.

[0041] The A and B herein "are arranged in the same layer" means that the A and the B belong to different areas in the same film layer, and each area can be formed at the same time; the A and the B "are arranged in different layers" means that the A and the B belong to different film layers, and the different film layers means that the film layers are not formed at the same time.

[0042] As shown in FIG. 1, the display device 1 provided by the embodiment of the present disclosure can be used in electronic devices such as mobile phones, tablet computers, etc. Figures 1 to 5

[0043] As shown in FIG. 1, the display device 1 provided by the embodiment of the present disclosure can be used in electronic devices such as mobile phones, tablet computers, etc. Figures 1 to 2 ​As shown, the display device 1 of the embodiment of the present disclosure can include a display panel 10, which can be a liquid crystal display panel 10, or an OLED (Organic Light Emitting Diode) display panel 10, a Mini LED (Mini Light Emitting Diode) display panel 10, a Micro LED (Micro Light Emitting Diode) display panel 10, etc. The display panel 10 can have a display area 10a and a peripheral area 10b located outside the display area 10a. The peripheral area 10b can be arranged around the edge of the display area 10a, and the peripheral area 10b can be a continuous annular area or a segmented area.

[0044] The display panel 10 can include a plurality of pixel circuits 101 and a plurality of data lines 102. The plurality of pixel circuits 101 can be arranged in an array in a row direction and a column direction. The plurality of data lines 102 can be arranged alternately with the plurality of columns of pixel circuits 101 in the row direction, and the data lines 102 can extend in the column direction. One data line 102 can be connected to one column of pixel circuits 101. It can be understood that the plurality of data lines 102 can correspond to the plurality of columns of pixel circuits 101 one by one, and each data line 102 can be connected to the column of pixel circuits 101 corresponding thereto. Each data line 102 can correspond to the column of pixel circuits 101 adjacent thereto, so that the data line 102 is connected to the column of pixel circuits 101 adjacent thereto, for example, the odd-numbered column of data lines 102 can correspond to the odd-numbered column of pixel circuits 101 adjacent thereto, and the even-numbered column of data lines 102 can correspond to the even-numbered column of pixel circuits 101 adjacent thereto, which can facilitate the connection wiring of the data lines 102 and the pixel circuits 101. However, it is not limited thereto, and each data line 102 can also correspond to a column of pixel circuits 101 at another position.

[0045] The display panel 10 can also include a plurality of control lines 103. The plurality of control lines 103 can be arranged alternately with the plurality of rows of pixel circuits 101 in the column direction, and the control lines 103 can extend in the row direction. One control line 103 can be connected to one row of pixel circuits 101. It can be understood that the plurality of control lines 103 can correspond to the plurality of rows of pixel circuits 101 one by one, and each control line 103 can be connected to the row of pixel circuits 101 corresponding thereto. Each control line 103 can correspond to the row of pixel circuits 101 adjacent thereto, so that the control line 103 is connected to the row of pixel circuits 101 adjacent thereto, for example, the odd-numbered row of control lines 103 can correspond to the odd-numbered row of pixel circuits 101 adjacent thereto, and the even-numbered row of control lines 103 can correspond to the even-numbered row of pixel circuits 101 adjacent thereto, which can facilitate the connection wiring of the control lines 103 and the pixel circuits 101. However, it is not limited thereto, and each control line 103 can also correspond to a row of pixel circuits 101 at another position.

[0046] The pixel circuit 101 may have a control terminal, an input terminal, and an output terminal. The data line 102 may be connected to the input terminal, and the control line 103 may be connected to the control terminal.

[0047] The display device 1 may further include a driving circuit 11, which may be disposed on the display panel 10 and located in the peripheral area 10b. This avoids the driving circuit 11 from obstructing the display of the display panel 10 and improves the display effect of the display device 1. At least some of the data lines 102 may be connected to the driving circuit 11, receive driving signals from the driving circuit 11, and drive the pixel circuit 101 to refresh after receiving the driving signals.

[0048] Furthermore, the display device 1 may also include a switching circuit 14, which may be disposed on the display panel 10 and located in the peripheral area 10b. This avoids the switching circuit 14 obstructing the display of the display panel 10, thereby further improving the display effect of the display device 1. At least some of the control lines 103 may be connected to the switching circuit 14, receive the switching control signal issued by the switching circuit 14, and control the pixel circuit 101 to refresh after receiving the switching control signal.

[0049] When the display panel 10 refreshes, the driving circuit 11 can send a driving signal to each column of data lines 102, and the switching circuit 14 can send a switching control signal to each row of control lines 103 row by row, so that each row of pixel circuits 101 is refreshed sequentially. When the last row of pixel circuits 101 is refreshed, the frame refresh is completed. Alternatively, the switching circuit 14 can send a switching control signal to each row of control lines 103, and the driving circuit 11 can send a driving signal to each column of data lines 102 column by column, so that each column of pixel circuits 101 is refreshed sequentially. When the last column of pixel circuits 101 is refreshed, the frame refresh is completed. The driving circuit 11 can also be used to send a synchronization signal at the end of each frame refresh.

[0050] like Figures 1 to 5 As shown, the display panel 10 may include a driving backplate 104 and a plurality of light-emitting devices 105. Pixel circuits 101 and data lines 102 may be disposed within the driving backplate 104. The plurality of light-emitting devices 105 may be arrayed along the row and column directions on one side of the driving backplate 104 and electrically connected to the pixel circuits 101 to drive the light-emitting devices 105 to emit light. The light-emitting devices 105 may be connected to the output terminal of the pixel circuits 101. The light-emitting devices 105 may include a first electrode 1051, a light-emitting layer 1052, and a second electrode 1053 arranged sequentially along a direction away from the driving backplate 104. The first electrode 1051 may be a cathode, and the second electrode 1053 may be an anode; or, the first electrode 1051 may be an anode, and the second electrode 1053 may be a cathode.

[0051] The display device 1 can further include a photoelectric sensing component 12 disposed on the display panel 10 and can overlap the display area 10a. The photoelectric sensing component 12 can be a proximity light sensor or other component with photoelectric sensing function. The photoelectric sensing component 12 can include a light emitting component 121 and a light sensing component 122. The light emitting component 121 can be connected to the driving circuit 11 and used to emit sensing light after receiving the synchronization signal. The sensing light emitted by the light emitting component 121 can be infrared sensing light or other types of sensing light. Thus, the display device 1 can emit the synchronization signal at the end of each frame refresh by using the driving circuit 11, and emit the sensing light by using the light emitting component 121 after receiving the synchronization signal. The light emitting component 121 can emit the sensing light during the next frame refresh of the display panel 10, avoid interference of the sensing light on the display of the display panel 10, and avoid the occurrence of unexpected bright spots on the display panel 10, so that the display device 1 has better display effect.

[0052] In some embodiments of the present disclosure, the light emitting component 121 can include an infrared light emitting element 1211 and a control circuit 1212. The infrared light emitting element 1211 can be used to emit infrared sensing light. The control circuit 1212 can be connected to the infrared light emitting element 1211 and the driving circuit 11, used to receive the synchronization signal, and used to control the infrared light emitting element 1211 to emit the infrared sensing light after receiving the synchronization signal.

[0053] The time interval between the time when the light emitting component 121 emits the sensing light and the time when the synchronization signal is received is a preset time length. Since the time when the driving circuit 11 emits the synchronization signal at the end of each frame refresh is fixed, and the time when the synchronization signal reaches the light emitting component 121 from the driving circuit 11 is fixed, the time when the light emitting component 121 emits the sensing light can be accurately controlled by adjusting the time interval between the time when the light emitting component 121 emits the sensing light and the time when the synchronization signal is received. Thus, the light emitting component 121 can emit the sensing light accurately at the refresh of the display panel 10, ensure that the sensing light does not interfere with the display of the display panel 10, and ensure the display effect of the display device 1.

[0054] The refresh rate of the display panel 10 and the preset time length can be negatively correlated, that is, when the refresh rate of the display panel 10 is higher, the preset time length can be shorter; when the refresh rate of the display panel 10 is lower, the preset time length can be longer. In addition, the preset time length can be less than the refresh interval time length of the display panel 10 to ensure that the sensing light can be emitted at the refresh of the display panel 10.

[0055] The display device 1 can further include a control circuit board 13, which can be arranged on the backlight side of the display panel 10 and can be connected with the driving circuit 11 and the light emitting component 121 to set the preset time length. The control circuit 1212 can include elements such as a processor. The control circuit board 13 can set the preset time length when the display device 1 is powered on and send the set preset time length to the light emitting component 121. Alternatively, the control circuit board 13 can determine the refresh rate of the display panel 10 at different times by receiving a synchronization signal in real time, and can update the preset time in real time according to the refresh rate of the display panel 10 at different times, and send the real-time updated preset time to the light emitting component 121 to adjust the time when the light emitting component 121 sends the sensing light in real time, which can ensure that the time when the sensing light is emitted can be matched with the refresh rate of the display panel 10 in real time, and can ensure that the sensing light will not interfere with the display of the display panel 10 when the refresh rate of the display panel 10 changes.

[0056] In some embodiments of the present disclosure, as shown in Figure 4 The light emitting component 121 can be arranged on the side of the driving backboard 104 away from the light emitting device 105, or as shown in Figure 5 The light emitting component 121 can be arranged in the driving backboard 104.

[0057] As shown in Figure 1 , 4 and 5, the light sensing component 122 can be used to receive the reflected sensing light of the display device 1 and convert the reflected sensing light into an electrical signal. The light sensing component 122 can be connected with the control circuit board 13 to send the electrical signal to the control circuit 1212.

[0058] In some embodiments of the present disclosure, the light sensing component 122 can be arranged in the same layer as the light emitting device 105 to facilitate the reception of the reflected sensing light. The light sensing component 122 can include a first sensing electrode 1221, a photoelectric conversion layer 1222 and a second sensing electrode 1223 arranged in sequence in the direction away from the driving backboard 104. The first electrode 1051 can be arranged in the same layer as the first sensing electrode 1221, the photoelectric conversion layer 1222 can be used to convert the reflected sensing light into an electrical signal, and the photoelectric conversion layer 1222 can be arranged in the same layer as the light emitting layer 1052, and the second electrode 1053 can be arranged in the same layer as the second sensing electrode 1223. In this way, the manufacturing difficulty of the display device 1 can be reduced, and the height of the surface of the light emitting device 105 away from the driving backboard 104 and the surface of the light sensing component 122 away from the driving backboard 104 can be ensured to be consistent, which facilitates the subsequent formation of other structures of the display device 1 on the light emitting device 105 and the driving backboard 104.

[0059] The second electrode 1053 can be integrated with the second sensing electrode 1223, that is, the second electrode 1053 and the second sensing electrode 1223 can be the same electrode, which can be formed simultaneously in one process step to reduce the number of steps in manufacturing the display device 1.

[0060] In other embodiments of this disclosure, the photosensitive component 122 may also be disposed on the side of the driving backplate 104 away from the light-emitting device 105, or the photosensitive component 122 may be disposed within the driving backplate 104. The photosensitive component 122 may also be disposed on the same layer as the light-emitting component 121, that is, both the light-emitting component 121 and the photosensitive component 122 may be disposed on the side of the driving backplate 104 away from the light-emitting device 105, or both the light-emitting component 121 and the photosensitive component 122 may be disposed within the driving backplate 104.

[0061] The embodiments of this disclosure also provide an electronic device, which may be a mobile device such as a mobile phone, tablet computer, laptop computer, smartwatch, smart bracelet, augmented reality terminal and virtual reality terminal, or a home device such as a television, smart door lock, projector, or an in-vehicle device such as a car navigation system.

[0062] like Figures 1 to 5 As shown, the electronic device may include the aforementioned display device 1. The electronic device can utilize the driving circuit 11 to emit a synchronization signal at the end of each frame refresh. Upon receiving the synchronization signal, the light-emitting component 121 emits sensing light, enabling it to emit sensing light during the next frame refresh of the display panel 10. This avoids interference from the sensing light on the display panel 10, preventing unexpected bright spots from appearing on the display panel 10 and resulting in a better display effect. Furthermore, by placing the driving circuit 11 in the peripheral area 10b of the display panel 10, obstruction of the display panel 10 by the driving circuit 11 is avoided, further improving the display effect of the electronic device.

[0063] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the utility models disclosed herein. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the appended claims.

Claims

1. A display device, characterized by comprising: The display device comprises: a display panel having a display area and a peripheral area outside the display area; a driving circuit provided on the display panel and located in the peripheral area, the driving circuit being configured to send a synchronization signal at the end of each frame refresh; a photoelectric sensing assembly provided on the display panel and overlapping the display area, the photoelectric sensing assembly comprising a light-emitting component and a light-sensing component, the light-emitting component being connected to the driving circuit and configured to emit sensing light after receiving the synchronization signal.

2. The display device according to claim 1, wherein The light-emitting component comprises: an infrared light-emitting element configured to emit infrared sensing light; a control circuit connected to the infrared light-emitting element and the driving circuit, the control circuit being configured to receive the synchronization signal and control the infrared light-emitting element to emit infrared sensing light after receiving the synchronization signal.

3. The display device according to claim 1 or 2, wherein The light-emitting component emits the sensing light at a time interval of a preset time length from the time of receiving the synchronization signal.

4. The display device according to claim 3, wherein The display device further comprises: a control circuit board provided on the backlight side of the display panel and connected to the driving circuit and the light-emitting component, the control circuit board being configured to set the preset time length.

5. The display device according to claim 3, wherein The refresh rate of the display panel and the preset time length are negatively correlated.

6. The display device according to claim 1, wherein The display panel comprises: a plurality of pixel circuits arranged in a row direction and a column direction; a plurality of data lines, the data lines and the pixel circuits being arranged alternately in the row direction, and the data lines extending in the column direction; one data line being connected to one column of pixel circuits, and at least part of the data lines being connected to the driving circuit.

7. The display device according to claim 6, wherein The display panel comprises: a driving backplane, the pixel circuits and the data lines being provided in the driving backplane; a plurality of light-emitting devices arranged on one side of the driving backplane in the row direction and the column direction and connected to the pixel circuits; the light-emitting component being provided on the side of the driving backplane away from the light-emitting devices; and the light-sensing component being provided in the same layer as the light-emitting devices.

8. The display device according to claim 6, wherein The display panel comprises: a driving backplane, the pixel circuits and the data lines being provided in the driving backplane; a plurality of light-emitting devices arranged on one side of the driving backplane in the row direction and the column direction and connected to the pixel circuits; the light-emitting component being provided in the driving backplane; and the light-sensing component being provided in the same layer as the light-emitting devices.

9. The display device according to claim 7 or 8, characterized by The light-emitting device comprises a first electrode, a light-emitting layer and a second electrode arranged in sequence in a direction away from the driving backplane; the light-sensing component comprises a first sensing electrode, a photoelectric conversion layer and a second sensing electrode arranged in sequence in a direction away from the driving backplane; the first electrode and the first sensing electrode being provided in the same layer, the light-emitting layer and the photoelectric conversion layer being provided in the same layer, and the second electrode and the second sensing electrode being provided in the same layer.

10. The display device according to claim 9, wherein The second electrode and the second sensing electrode are in an integrated structure.

11. An electronic device, comprising: The electronic device comprises the display device according to any one of claims 1 to 10.

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