Sensor and electronic equipment

Abstract

The utility model provides a sensor and electronic equipment, and the sensor comprises a photosensitive element, the conductivity of which can be changed based on the light irradiated to a first region of the photosensitive element; wherein the photosensitive element comprises a first end and a second end; the first structural body comprises a first part and a second part, the first part is electrically connected with the first end, and the second part is electrically connected with the second end; electric energy is transmitted between the first structural body and the photosensitive element, and different voltage drops are generated based on the conductivity of the photosensitive element, so that an output electric signal can represent a light irradiation condition; the second structural body covers the area, corresponding to the first area, of the first structural body, and the reflectivity of the second structural body to light rays is lower than that of the first structural body to the light rays.

Description

Technical Field

[0001] The present application relates to the field of electronic technology, and relates to but is not limited to a sensor and an electronic device. Background Art

[0002] Sensors are widely used in electronic devices, but in some specific scenarios, when light shines on the sensor, the user can directly see the internal structure of the sensor, affecting the appearance of the sensor on the electronic device. Utility Model Content

[0003] In view of this, the technical solution of the embodiment of the present application is implemented as follows:

[0004] In a first aspect, an embodiment of the present application provides a sensor, including:

[0005] A photosensitive element, the conductivity of which can be changed based on light irradiated to a first area of ​​the photosensitive element; wherein the photosensitive element includes a first end and a second end;

[0006] A first structure, wherein the first structure includes a first part and a second part, wherein the first part is electrically connected to the first end, and the second part is electrically connected to the second end; electrical energy is transmitted between the first structure and the photosensitive element, and different voltage drops are generated based on the conductivity of the photosensitive element, so that the output electrical signal can represent the light exposure condition;

[0007] A second structure body, wherein the second structure body covers an area on the first structure body corresponding to the first area, and a reflectivity of the second structure body to light is lower than a reflectivity of the first structure body to light.

[0008] In a second aspect, an embodiment of the present application provides an electronic device, including:

[0009] a photosensitive element, comprising a first end and a second end, wherein the conductivity of the photosensitive element can be changed based on light irradiated to a first area of ​​the photosensitive element;

[0010] a first structure, the first structure comprising a first portion and a second portion, the first portion being electrically connected to the first end, the second portion being electrically connected to the second end, the first structure transmitting electrical energy to the photosensitive element, and being capable of outputting a detection signal based on the conductivity of the photosensitive element, the detection signal being related to the light irradiating the first area of ​​the photosensitive element;

[0011] a second structure, wherein the second structure covers an area on the first structure corresponding to the first area, and the reflectivity of the second structure to light is lower than the reflectivity of the first structure to light;

[0012] The processor is electrically connected to the first structure, and can obtain the detection signal and control the state of the electronic device based on the detection signal. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 A schematic diagram of the structure of a sensor provided in an embodiment of the present application;

[0014] Figure 2 A schematic diagram of the structure of a sensor provided in an embodiment of the present application;

[0015] Figure 3 A schematic diagram of the structure of a sensor provided in an embodiment of the present application;

[0016] Figure 4 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application;

[0017] Figure 5A A schematic diagram of the structure of a sensor provided in an embodiment of the present application;

[0018] Figure 5B A schematic diagram of the structure of a sensor provided in an embodiment of the present application;

[0019] Figure 5C A schematic diagram of a sensor being blocked provided in an embodiment of the present application;

[0020] Figure 5D A schematic diagram of an unobstructed sensor provided in an embodiment of the present application;

[0021] Fig. 6A A schematic diagram of an electronic device provided in an embodiment of the present application;

[0022] Figure 6B A schematic diagram of the sensor positions provided in the embodiment of the present application;

[0023] Figure 6C A schematic diagram of a display device with an integrated light sensor provided in an embodiment of the present application;

[0024] Fig.6D A schematic diagram of a display screen provided in an embodiment of the present application;

[0025] Fig. 7A A schematic diagram of a display device provided in an embodiment of the present application;

[0026] Figure 7B A circuit diagram of a display device provided in an embodiment of the present application;

[0027] Figure 8A schematic diagram of a display device provided in an embodiment of the present application;

[0028] Fig. 9 A schematic diagram of a processing process of a display device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0029] To make the technical solutions and advantages of the embodiments of the present application clearer, the specific technical solutions of the present application will be further described in detail below in conjunction with the drawings in the embodiments of the present application. The following embodiments are used to illustrate the present application but are not intended to limit the scope of the present application.

[0030] When describing the embodiments of the present application in detail, for the sake of convenience, the cross-sectional views showing the device structure will not be partially enlarged according to the general scale, and the schematic views are only examples, which should not limit the scope of protection of the present application. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0031] It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0032] In the subsequent description, the suffixes such as "module", "component" or "unit" used to represent elements are only used to facilitate the description of the present application, and have no specific meanings. Therefore, "module", "component" or "unit" can be used in a mixed manner.

[0033] Figure 1 A schematic diagram of the structure of a sensor provided in an embodiment of the present application is shown in FIG. Figure 1 As shown, the sensor includes: a photosensitive element 10, a first structure 11 and a second structure 12, wherein:

[0034] A photosensitive element 10 , the conductivity of which can be changed based on light irradiating a first area 101 of the photosensitive element; wherein the photosensitive element 10 includes a first end 103 and a second end 104 .

[0035] Here, the photosensitive element is a component that can convert the acquired light energy into electrical energy. Figure 1 As shown, the photosensitive element 10 can convert changes in light irradiating the upper surface of the photosensitive element, ie, the first area 101 , into changes in electrical energy.

[0036] For example, a photosensitive element can utilize amorphous silicon (a-Si) semiconductors to generate photogenerated carriers under light irradiation, causing its own electrical conductivity characteristics to change.

[0037] like Figure 1 As shown, the photosensitive element 10 includes a first end 103 and a second end 104 .

[0038] The first structure 11 includes a first part 111 and a second part 112, the first part 111 is electrically connected to the first end 103, and the second part 112 is electrically connected to the second end 104; there is electrical energy transmission between the first structure 11 and the photosensitive element 10, and different voltage drops are generated based on the conductivity of the photosensitive element 10, so that the output electrical signal can represent the light exposure situation.

[0039] Here, the first structure 11 can be set as a conductive layer, using aluminum (Al) or copper (Cu) as a metal wiring. The first part 111 and the second part 112 of the first structure are set on both sides of the photosensitive element, and are respectively connected to the first end 103 and the second end 104 of the photosensitive element.

[0040] During the implementation process, the first structure 11 can output electrical energy to the photosensitive element, and generate different voltage drops based on the different conductivity of the photosensitive element, so that the parameters (such as voltage or current) of the electrical energy finally output after passing through the photosensitive element are different. Therefore, the parameters of the output electrical energy can characterize the changes in the light irradiated on the first area 101 of the photosensitive element, such as the intensity of the light and whether there is light shining on the first area 101.

[0041] For example, when the first area is completely blocked by external objects, that is, no light is irradiated to the first area of ​​the photosensitive element, the photosensitive element does not generate photogenerated carriers in the absence of light, resulting in a larger first resistance value of the photosensitive element. Therefore, the first electrical energy parameter (such as voltage or current) corresponding to the first resistance value will be output through the first structure.

[0042] For example, when the first area is not completely blocked or partially blocked by external objects, that is, light is irradiated to the first area of ​​the photosensitive element, the photogenerated carriers generated by the photosensitive element when exposed to light cause the second resistance value of the photosensitive element to be smaller than the first resistance value. Therefore, a second electrical energy parameter (such as voltage or current) corresponding to the second resistance value is output through the first structure, and the second electrical energy parameter is different from the first electrical energy parameter.

[0043] The second structure 12 covers an area on the first structure corresponding to the first area, and the reflectivity of the second structure to light is lower than the reflectivity of the first structure to light.

[0044] In the implementation process, since the first structure 11 needs to be conductive (such as metals such as Cu or Al), and the conductive material has a strong light reflection ability, when the external ambient light shines on the sensor, the light reflected by the first structure 11 enters the human eye, so that visually, the human eye can clearly see the first structure 11 and / or the photosensitive element 10, affecting the appearance of the sensor.

[0045] To improve the above problem, the embodiment of the present application proposes to cover the surface of the first structure 11 with a second structure 12, wherein the reflectivity of the second structure 12 to light is lower than the reflectivity of the first structure 11 to light. In this way, the light irradiated on the first structure 11 can be partially or completely absorbed.

[0046] For example, a layer of second structure 12 can be plated on the first structure 11 (Cu / Al). The second structure 12 can be a black metal Mo (not limited to Mo). Since the reflectivity of the second structure to light is lower than that of the first structure to light, when the light is irradiated to the second structure, the light passes through the second structure and then through the first structure, and the reflected light is much smaller than the irradiated light, thereby preventing the external ambient light from being reflected to the human eye or reducing the light reflected to the human eye, thereby visually ensuring that the internal structure of the sensor is not easy to be seen, thereby improving the aesthetics of the sensor.

[0047] For example, a second structure 12 can be plated on the first structure 11 (Cu / Al). The second structure 12 can be a non-metallic material that is translucent on one side. Since the second structure has the characteristic of being translucent on one side, the light irradiated to the second structure cannot be reflected, and the external ambient light cannot be reflected to the human eye, thereby visually ensuring that the internal structure of the sensor is not easy to be seen, thereby improving the appearance of the sensor.

[0048] In the embodiment of the present application, the sensor includes: a photosensitive element, the conductivity of which can change based on the light irradiated to the first area of ​​the photosensitive element; wherein the photosensitive element includes a first end and a second end; a first structure, the first structure includes a first part and a second part, the first part is electrically connected to the first end, and the second part is electrically connected to the second end; there is electrical energy transmission between the first structure and the photosensitive element, and different voltage drops are generated based on the conductivity of the photosensitive element, so that the output electrical signal can represent the light irradiation situation; a second structure, the second structure covers the area corresponding to the first area on the first structure, and the reflectivity of the second structure to the light is lower than the reflectivity of the first structure to the light. In this way, since the reflectivity of the second structure to the light is lower than the reflectivity of the first structure to the light, when the light is irradiated to the first structure, the external ambient light cannot be reflected to the human eye, so that the internal structure of the sensor is not easy to be seen visually, and the beauty of the sensor is improved.

[0049] In some embodiments, Figure 2 As shown, the sensor further includes a third structure 13, wherein:

[0050] The third structure 13 is disposed corresponding to the second region 102 of the photosensitive element 10 and is used to absorb or reflect light irradiated to the second region 102 . The surface where the second region 102 is located is opposite to the surface where the first region 101 is located.

[0051] Here, the third structure 13 can be set as a light-absorbing material to absorb or reflect the light irradiated to the second area 102. For example, the color of the third structure 13 can be black, or the color of the third structure 13 can be a non-metallic material with a single-sided light-transmitting property.

[0052] The sensor in the embodiment of the present application further includes a third structure, which is arranged corresponding to the second area of ​​the photosensitive element and is used to absorb or reflect the light irradiated to the second area, and the surface where the second area is located is opposite to the surface where the first area is located. In this way, the reflectivity of the metal is reduced, so that the external ambient light cannot be reflected to the human eye, so that the internal structure of the sensor is not easily visible visually, and the appearance of the sensor is improved.

[0053] In some embodiments, Figure 3 As shown, the sensor further includes a fourth structure 14 and a fifth structure 15, wherein:

[0054] The fourth structure 14 is arranged corresponding to the second area 102 of the photosensitive element;

[0055] The fifth structure 15 covers an area on the fourth structure 14 corresponding to the second area 102 , and the fifth structure 15 is used to absorb or reflect light irradiated to the second area.

[0056] Here, the fifth structure 15 may be configured to be a black light absorbing material to absorb the light irradiated to the second region 102 .

[0057] In some embodiments, the reflectivity of the fifth structure 15 to light is lower than the reflectivity of the fourth structure 14 to light, and part of the light irradiated to the second area 102 can be absorbed.

[0058] For example, the fourth structure 14 can be set as a conductive layer and made of aluminum (Al) or copper (Cu); the fifth structure 15 can be a black metal Mo (not limited to Mo) or a non-metallic material that is translucent on one side to reduce the light irradiating the second area.

[0059] The sensor in the embodiment of the present application further includes a fourth structure and a fifth structure, wherein the fifth structure covers the area on the fourth structure corresponding to the second area, and the fifth structure is used to absorb or reflect the light irradiated to the second area. In this way, the fifth structure can be used to absorb light or reduce the light irradiated to the second area, so that the external ambient light cannot be reflected to the human eye, thereby visually ensuring that the appearance of the sensor is an overall full screen, and improving the beauty of the sensor.

[0060] In some embodiments, a first insulating layer is disposed between the second structure body and the first structure body.

[0061] Here, the insulating layer is a layer of material used to isolate the second structure from the first structure, and is used to prevent short circuit or leakage in the sensor, thereby ensuring the stability and safety of the sensor.

[0062] In some embodiments, a second insulating layer may be disposed between the fifth structure body and the fourth structure body.

[0063] In the embodiment of the present application, a first insulating layer is provided between the second structure and the first structure, so as to prevent short circuit or leakage in the sensor and ensure the stability and safety of the sensor.

[0064] In some embodiments, a projection area of ​​the photosensitive element in a direction pointing toward the third structure is within a projection area range of the third structure.

[0065] Here, if Figure 2As shown, the projection area of ​​the photosensitive element 10 in the direction pointing to the third structure 13 is within the projection area of ​​the third structure 13. For example, the photosensitive element 10 can be arranged directly above the third structure 13, and the surface area of ​​the structure 13 is larger than that of the photosensitive element 10.

[0066] In the embodiment of the present application, the projection area of ​​the photosensitive element in the direction pointing to the third structure is within the projection area of ​​the third structure. In this way, the third structure can completely absorb or reflect the light irradiated to the second area 102.

[0067] Figure 4 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application is shown in FIG. Figure 4 As shown, the electronic device includes:

[0068] A photosensitive element 10, comprising a first end 103 and a second end 104, wherein the conductivity of the photosensitive element can be changed based on light irradiated to a first area 101 of the photosensitive element;

[0069] A first structure 11, wherein the first structure 11 includes a first portion 111 and a second portion 112, wherein the first portion 111 is electrically connected to the first end 103, and the second portion 112 is electrically connected to the second end 104, and electrical energy is transmitted between the first structure 11 and the photosensitive element 10, and a detection signal can be output based on the conductivity of the photosensitive element 10, wherein the detection signal is related to the light irradiated to the first area 101 of the photosensitive element;

[0070] a second structure 12, wherein the second structure 12 covers an area on the first structure 11 corresponding to the first area 101, and the reflectivity of the second structure 12 to light is lower than the reflectivity of the first structure to light;

[0071] The processor 16 is electrically connected to the first structure 11, and can obtain the detection signal and control the state of the electronic device based on the detection signal.

[0072] Here, the electronic device may be a computer, a mobile phone, a tablet or the like. A sensor including a photosensitive element, a first structure and a second structure is provided in the electronic device, which can convert light energy into electrical energy and output a detection signal based on the electrical energy.

[0073] For example, Figure 5A A schematic diagram of a sensor is provided for the application embodiment, such as Figure 5AAs shown, the sensor includes a conductive layer (first structure). Since the conductive layer in the current panel manufacturing process can be made of conductive metals such as Al or Cu, and Cu / Al metal has a strong reflective property, when the external ambient light shines on the sensor through the opening, the reflected light enters the human eye, so that visually, the human eye can clearly see the integrated sensor in the panel, affecting the aesthetics of the sensor on the display screen.

[0074] For example, Figure 5B A schematic diagram of the structure of a sensor provided in an embodiment of the present application is shown in FIG. Figure 5B As shown, here, a layer of second structure (black metal Mo, not limited to Mo) is plated on the first structure (Cu / Al) metal, which can reduce the metal reflectivity and prevent the external ambient light from being reflected to the human eye, thereby visually ensuring that the panel appearance is an overall full screen, thereby improving the aesthetics of the sensor on the display screen.

[0075] For example, Figure 5C A schematic diagram of a sensor being blocked provided in an embodiment of the present application, such as Figure 5C As shown, the schematic diagram includes a sensor 50, an upper glass substrate 51, an edge area 52 and a lower glass substrate 53, wherein the edge area 52 may be a non-display area on the electronic device where no content is displayed, and the area may be a black area, the integrated panel wiring where the sensor 50 is located may be Al / Cu, and the semiconductor in the photosensitive element of the sensor may be a-Si. When the finger covers the upper glass substrate 51, the finger covers the opening area of ​​the black matrix 52. Since the light cannot irradiate the photosensitive element, the photosensitive element does not generate photogenerated carriers in the absence of light irradiation, resulting in a large first resistance value of the photosensitive element of the sensor 50, and the generated voltage signal will also decrease accordingly, thereby reducing the sensor voltage signal in the designed circuit, and then taking the user touching the light sensor as an example, the processor can be used to determine that the user is performing a touch operation. And the state of the electronic device is controlled based on the touch operation, such as turning on a corresponding function.

[0076] Figure 5D A schematic diagram of a sensor that is not blocked provided in an embodiment of the present application, such as Figure 5DAs shown, the schematic diagram includes a sensor 50, an upper glass substrate 51, a black matrix 52 and a lower glass substrate 53, wherein the integrated panel wiring of the sensor 50 is AI / Cu, and the semiconductor is a-Si. When the user does not perform a touch operation, since the corresponding black matrix area 52 above the semiconductor layer is open, the sensor 50 can sense the ambient light passing through the upper glass substrate 51. The photosensitive element in the sensor generates photogenerated carriers under the irradiation of light, which makes the resistance of the light sensor smaller, and the generated voltage signal will also increase accordingly, so that the increase in the light sensor voltage signal in the designed circuit can determine that the user has not performed a touch operation. The state of the electronic device can be controlled based on the failure to perform a touch operation, such as turning off a corresponding function.

[0077] In the embodiment of the present application, the processor of the electronic device is electrically connected to the first structure, and can obtain the detection signal and control the state of the electronic device based on the detection signal, thereby realizing the control of the state of the electronic device by utilizing the change of light energy detected by the light sensor.

[0078] In some embodiments, the electronic device further includes: a display unit, wherein the processor is further configured to control a state of the display unit based on the detection signal.

[0079] Here, the display unit of the electronic device may be a screen capable of displaying an image. In the implementation process, the processor may control the display state on the screen based on the detection signal.

[0080] For example, Fig. 6A A schematic diagram of an electronic device provided in an embodiment of the present application, such as Fig. 6A As shown, the schematic diagram includes a display device 610, a display screen 611 area of ​​the display device 610, and a sensor 612, wherein the display device 610 is a single-screen display device, and multiple sensors 612 can be set at the display screen position 611 of the display device 610, and the user realizes the image change on the display screen by touching the sensor 612. Here, the sensor (light sensor) 612 can be used as a display control button. Under the premise of a narrow frame design, the direction in which the control button receives ambient light is the same as the direction of the display screen, which is convenient for user operation. The light sensor can convert an optical signal into an electrical signal, wherein amorphous silicon (a-Si) can be used as a light sensor by utilizing the characteristics that amorphous silicon (a-Si) generates photogenerated carriers under light irradiation and its own conductivity characteristics change. When the user's finger covers the light sensor, the light sensor cannot sense the light, and the resistance of the light sensor is relatively large. When the user's finger does not cover the light sensor, the light sensor can be irradiated by ambient light, and the photogenerated carriers generated by the light sensor make the resistance of the light sensor relatively small, so that it can be judged whether the user performs a touch operation according to the voltage change of the light sensor.

[0081] For example, Figure 6B A schematic diagram of the sensor position provided in the embodiment of the present application, such as Figure 6B As shown, the schematic diagram includes a single-screen display device 620 and a dual-screen display device 623, wherein a plurality of sensors 622 may be set at a display screen position 621 of the display device 620; the display device 623 is a dual-screen display device, and a plurality of sensors 622 may be set at a display screen position 624 and a position 625 of the display device 623, so as to utilize the sensors 622 to control the corresponding display screens.

[0082] Figure 6C A schematic diagram of a display device with an integrated light sensor provided in an embodiment of the present application is shown in FIG. Figure 6C As shown, a plurality of light sensors are arranged at position 631 on the display screen of the display device 630. The light sensors can be integrated into the panel as display control buttons. Under the premise of a narrow bezel design, the direction in which the control buttons receive ambient light can be the same as the direction of the display screen, thereby facilitating user operation.

[0083] In the embodiment of the present application, the light sensor can convert the light signal into a voltage signal, wherein amorphous silicon (a-Si) can be used as a light sensor by utilizing the characteristics that it generates photogenerated carriers under light irradiation and its own conductivity characteristics change. When the user's finger covers the light sensor, the light sensor cannot sense the light, and the resistance of the light sensor is relatively large. When the user's finger does not cover the light sensor, the light sensor can be irradiated by ambient light, and the photogenerated carriers generated by the light sensor make the resistance of the light sensor relatively small, so that it can be judged whether the user performs a touch operation according to the voltage change of the light sensor.

[0084] Fig.6D A schematic diagram of a display screen provided in an embodiment of the present application, such as Fig.6D As shown, the display screen includes a display area 64 and a non-display area, and the non-display area includes an upper glass substrate 63, a lower glass substrate 67 and at least one preset area 65, wherein a sensor 66 corresponding to each preset area 65 is integrated on a panel driver chip 68, and multiple panel driver chips 68 are integrated on a circuit board 69 of the display device.

[0085] In the embodiment of the present application, the preset area 65 is set corresponding to the position of the sensor 66, and the preset area 65 is used to obtain the physical signal sensed to the sensor 66. The display area 64 is used to display the image data signal.

[0086] Here, the non-display area is the area other than the display area on the display screen, excluding the frame area. Taking the light sensor as an example, the preset area 65 is a light-transmissive area set on the display screen, and the sensor 66 can sense the light signal through the preset area 65. The position of the preset area 65 is set corresponding to the position of the sensor 66, and the number of the preset areas 65 corresponds to the number of sensors 66. The position of the preset area 65 and the position of the sensor 66 can be set on the display screen according to actual conditions.

[0087] For example, when the display device includes a single display screen, the position of the preset area 65 and the position of the sensor 66 can be set at the lower right side of the display screen. When the display device includes multiple display screens, the position of the preset area 65 and the position of the sensor 66 can be set on both sides of each display screen. Here, there is no limitation on setting the position of the preset area 65 and the position of the sensor 66.

[0088] In an embodiment of the present application, the electronic device further comprises: a display unit, wherein the processor is further configured to control the state of the display unit based on the detection signal. In this way, the state of the display unit can be controlled by utilizing the detected light energy.

[0089] Fig. 7A A schematic diagram of a display device provided in an embodiment of the present application, such as Fig. 7A As shown, the display device includes a circuit 71, a processor 72 and a display screen 73, wherein:

[0090] Display screen 73 is used to display images. Here, the display device can be Fig. 6A As shown in the single screen display device 610, Figure 6B The dual-screen display device 623 shown may also be a detachable display device or a portable display device such as a tablet. The display screen may be a single display screen or multiple display screens.

[0091] At least one circuit 71, each of the circuits 71 includes a sensor 711, an amplifier 712 and a resistor element 713; the sensor 711 includes a conductive layer and an additional layer; wherein the conductive layer is arranged on the surface of the sensor, and the additional layer is arranged on the surface of the conductive layer, and the reflectivity of the additional layer to light is lower than the reflectivity of the conductive layer to light. Due to the reflective nature of the conductive layer, when the external ambient light is irradiated to the sensor 711, the reflected light can enter the human eye, and the human eye can clearly see the sensor 711 integrated on the panel visually, which can easily cause unsightly appearance, and the additional layer can be a material with a reflectivity lower than a preset reflection threshold, and the additional layer is arranged on the surface of the conductive layer to absorb the light irradiated to the conductive layer. For example, the material of the conductive layer can be a metal material, such as aluminum AI or copper Cu, and the material of the additional layer can be a black metal molybdenum Mo. Here, the sensor can be such as Figure 5A In the illustrated sensor 50 , the conductive layer may be a first structure and the additional layer may be a second structure.

[0092] Here, in each circuit 71, the sensor 711 is connected to the amplifier 712 and the resistor element 713 respectively, wherein the sensor 711 replaces the physical button of the display screen and can be a variety of sensors, such as a pressure sensor, a temperature sensor, and a light sensor, for converting a physical signal into an electrical signal. The amplifier is used to amplify the electrical signal of the sensor, and the resistor element 713 is connected to the sensor 711 to form a voltage divider circuit. The circuit 71 is integrated on the panel of the display device.

[0093] Figure 7B A circuit diagram of a display device provided in an embodiment of the present application is shown in FIG. Figure 7B As shown, the circuit diagram includes a sensor 711, a resistor element 712, a first ground point (GND714), an amplifier 713, a second ground point (GND715), a controller (MCU721), a processing chip (SOC722) and a display screen 73.

[0094] Among them, the initial voltage is Vs, the sensor 711 and the resistor element 712 form a voltage divider circuit, the first grounding point 714 is connected in series with the resistor element 712 to provide a reference voltage, the sensor 711 is connected in series with the amplifier 713, the amplifier 713 is used to amplify the voltage signal of the light sensor, vcc is the power supply voltage of the amplifier 713, the voltage of the light sensor output by the voltage divider node is Vout and then connected to the MCU721, the MCU721 converts the voltage signal into a digital signal and then connects to the processing chip 722, the processing chip 722 outputs the processed image data signal to the display screen or executes the processed instructions.

[0095] In this embodiment, the MCU721 used in the circuit is a multi-channel input and output channel. When the user presses a certain sensor 711, the corresponding MCU721 input channel receives the changed Vout, converts it into a digital signal and transmits it to SOC722, so that the display device completes the corresponding instruction or the image on the display screen changes.

[0096] In the embodiment, Rs is the resistance of the light sensor, and Rc is the resistance of the resistance element. When the user does not perform a touch operation, the resistance Rs of the light sensor is close to the resistance Rc of the resistance element. At this time, the voltage signal Vout of the light sensor is not equal to 0. When the user does not perform a touch operation, the resistance Rs of the light sensor is much greater than the resistance Rc of the resistance element. At this time, the voltage signal Vout of the light sensor is equal to 0. That is, the voltage signal Vout of the light sensor can be calculated by the following expression (1):

[0097]

[0098] Where Vs is the input voltage, Vout is the voltage of the light sensor, Rs is the resistance of the light sensor, and Rc is the resistance of the resistor element.

[0099] Figure 8 A schematic diagram of a display device provided in an embodiment of the present application, such as Figure 8 As shown, the display device includes: sensors 1 to N, an amplifier 713, a processor 72, and a display screen 73, wherein:

[0100] Sensors 1 to N are connected to corresponding amplifiers via pins, and the amplifiers are connected to corresponding input terminals in processor 713 via pins. The amplifiers are used to input amplified electrical signals to processor 72 via corresponding input terminals. Processor 72 includes a first processor (MCU) and a second processor (SOC), and the first processor includes a comparator and a digital-to-analog converter. The first processor of processor 72 and the corresponding second processor are connected for communication via a serial bus, wherein the serial bus may be an integrated circuit serial bus I2C or a universal asynchronous receiver-transmitter Uart.

[0101] After the processor 72 receives the electrical signal corresponding to the sensor, the following processing is performed:

[0102] In the embodiment of the present application, when the comparator is used to determine that only one of the electrical signals matches the target value, the digital-to-analog converter is used to convert the electrical signal into a digital signal, and the image data signal corresponding to the digital signal is output to the display screen 73 through the second processor.

[0103] Here, combined Fig. 7AAs shown, the comparator can be used to compare the electrical signal output by the circuit 71. When the electrical signal matches the target value, the digital-to-analog converter is used to convert the electrical signal into a digital signal, and then the digital signal is converted into a corresponding image data signal by a second processor, and output to the corresponding display screen through the corresponding output terminal on the processor.

[0104] In the embodiment of the present application, when there is only one electrical signal that matches the target value, that is, the user has only performed one touch operation, the image on the display screen can be changed according to the image data signal corresponding to the sensor of the user's touch operation.

[0105] For example, when the user only touches the sensor representing restarting the display device, the processor changes the image on the display screen to restart the display device by determining the image data signal corresponding to the sensor.

[0106] In the embodiment of the present application, the processor 72 also includes the following process:

[0107] When the comparator is used to determine that there are at least two electrical signals that match the target value, the digital-to-analog converter is used to obtain a target digital signal combination corresponding to the electrical signals that match the target value, a target instruction corresponding to the target digital signal combination is determined from a preset digital signal combination, and the target instruction is executed.

[0108] In the embodiment of the present application, when the user performs a touch operation, multiple sensors may be pressed at the same time, that is, at least two electrical signals match the target value. At this time, the target digital signal combination corresponding to the electrical signal matching the target value can be obtained by using a digital-to-analog converter, and the target instruction corresponding to the target digital signal combination can be determined from the preset digital signal combination, and the target instruction is executed. Among them, the instruction corresponding to the preset digital signal combination can be set according to the actual situation and the needs of the user, and the embodiment of the present application does not limit this.

[0109] For example, the user presses the sensors representing increasing the volume and decreasing the volume on the display device at the same time, and the target digital signal combination obtained by the digital-to-analog converter is 001100. The instruction corresponding to the digital signal combination is set as a screenshot instruction in the preset digital signal combination. At this time, the processor 72 directly executes the screenshot instruction to implement the screenshot operation instructed by the user.

[0110] For example, when all sensors are completely blocked at the same time, that is, the target digital signal combination obtained by the digital-to-analog converter is 000000, the instruction corresponding to the digital signal combination is set in the preset digital signal combination as a screen-off instruction. At this time, it can be determined that the user has performed a cover closing operation, and the processor 72 executes the screen-off instruction to save power consumption of the display device and extend battery life.

[0111] In an embodiment of the present application, the processor further includes a comparator, a digital-to-analog converter, and a graphics card, wherein, when the comparator is used to determine that only one of the electrical signals matches the target value, the digital-to-analog converter is used to convert the electrical signal into a digital signal, and the graphics card is used to output the image data signal corresponding to the digital signal to the display screen. When the comparator is used to determine that at least two of the electrical signals match the target value, the digital-to-analog converter is used to obtain a target digital signal combination corresponding to the electrical signal matching the target value, determine the target instruction corresponding to the target digital signal combination from the preset digital signal combination, and execute the target instruction. In this way, the processor can perform corresponding processing according to the electrical signal generated by the touch operation, thereby realizing image changes on the display screen using the touch sensor, and improving the user's touch operation experience.

[0112] Fig. 9 A schematic diagram of a processing process of a display device provided in an embodiment of the present application, such as Fig. 9 As shown, light sensor 1 to light sensor N are connected to the corresponding amplifier 713 through pin (pin to pin), and the amplifier 713 is connected to the processor 72 through pin (pin to pin). The processor 72 includes multiple input terminals and multiple output terminals. The processor includes a controller (MCU721) and a processing chip (SOC722), wherein MCU721 is used to process the voltage signal of each light sensor. MCU721 includes a comparator, a digital-to-analog converter, a graphics card and other signal processing elements. The voltage signal is finally converted into a digital signal or an image data signal through MCU721, and the image data signal is displayed on the display screen using the processing chip, or the instruction corresponding to the digital signal is executed.

[0113] In order to more accurately judge user behavior, the optimization algorithm logic of MCU721 is as follows:

[0114] Step S901: MCU receives a channel signal of 0.

[0115] In the implementation process, the channel signal here refers to the digital signal corresponding to the voltage signal of the sensor after being processed by the processor. When the MCU receives a channel signal of 0, it determines whether other channels are 0 at this time. If so, execute step S902, otherwise execute step S903.

[0116] Step S902: The SOC executes a preset instruction.

[0117] During implementation, if any other channel signal is 0 at the same time, that is, multiple light sensors are blocked at the same time, the corresponding instruction can be matched from the preset digital signal combination according to the digital signal combination corresponding to the channel, and the preset instruction can be executed by SOC.

[0118] Step S903: The SOC outputs a corresponding image data signal to a display screen.

[0119] In the implementation process, if only one channel signal is 0, that is, only one light sensor is blocked, the SOC can be used to output a corresponding image data signal to the display screen to change the image on the display screen.

[0120] In some embodiments, the display unit includes a liquid crystal layer, the liquid crystal layer corresponds to a display area and a non-display area of ​​the display unit, wherein the display area is capable of displaying an image;

[0121] The photosensitive element is located in a preset area of ​​the non-display area, and the liquid crystal molecules in the liquid crystal layer corresponding to the preset area are configured to be non-reversible.

[0122] like Figure 5B As shown, the display unit includes a liquid crystal layer 54, and the preset area is an area 55 including the sensor 50. The liquid crystal molecules 541 in the preset area 55 are set to be non-reversible.

[0123] For example, when an operation button is set in the preset area, the liquid crystal molecules corresponding to the button position cannot be flipped, which can ensure that the display corresponding to the button position will not change with the change of other display contents on the display screen, making it convenient for users to quickly locate the fixed button position and perform the corresponding touch operation.

[0124] In the embodiment of the present application, the display unit includes a liquid crystal layer, and the liquid crystal layer corresponds to the display area and the non-display area of ​​the display unit, wherein the display area can display an image; the photosensitive element is located in a preset area of ​​the non-display area, and the liquid crystal molecules in the liquid crystal layer corresponding to the preset area are set to be non-reversible. In this way, no matter how the display content other than the preset area in the display unit changes, it will not affect the change of the content of the display area corresponding to the photosensitive element.

[0125] In some embodiments, the electronic device further includes: a third structure, wherein:

[0126] The third structure is arranged corresponding to the second area of ​​the photosensitive element, and is used to absorb or reflect light irradiated to the second area, and the surface where the second area is located is opposite to the surface where the first area is located.

[0127] Here, the third structure 13 may be configured to be a black light-absorbing material, so as to absorb or reflect the light irradiated to the second region 102 .

[0128] The sensor in the embodiment of the present application further includes a third structure, which is arranged corresponding to the second area of ​​the photosensitive element and is used to absorb or reflect the light irradiated to the second area, and the surface where the second area is located is opposite to the surface where the first area is located. In this way, the reflectivity of the metal is reduced, so that the external ambient light cannot be reflected to the human eye, and the appearance of the sensor is visually guaranteed to be an integral full screen, thereby improving the beauty of the sensor.

[0129] In some embodiments, the electronic device further includes a fourth structure and a fifth structure, wherein Figure 3 As shown, the fourth structure 14 is arranged corresponding to the second area 102 of the photosensitive element;

[0130] The fifth structure 15 covers an area on the fourth structure 14 corresponding to the second area 102 , and the fifth structure 15 is used to absorb or reflect light irradiated to the second area 102 .

[0131] Here, the fifth structure 15 may be configured to be a black light absorbing material to absorb the light irradiated to the second region 102 .

[0132] In some embodiments, the reflectivity of the fifth structure 15 to light is lower than the reflectivity of the fourth structure 14 to light, and part of the light irradiated to the second area 102 can be absorbed.

[0133] For example, the fourth structure body 14 can be set as a conductive layer, and made of aluminum (Al) or copper (Cu); the fifth structure body 15 can be a black metal Mo (not limited to Mo) to reduce the metal reflectivity.

[0134] The sensor in the embodiment of the present application further includes a fourth structure and a fifth structure, wherein the fifth structure covers the area on the fourth structure corresponding to the second area, and the fifth structure is used to absorb or reflect the light irradiated to the second area. In this way, the fifth structure can be used to absorb light or reduce the reflectivity of the metal so that the external ambient light cannot be reflected to the human eye, thereby visually ensuring that the appearance of the sensor is an overall full screen, thereby improving the aesthetics of the sensor.

[0135] It should be understood that "one embodiment" or "an embodiment" mentioned throughout the specification means that specific features, structures or characteristics related to the embodiment are included in at least one embodiment of the present application. Therefore, "in one embodiment" or "in an embodiment" appearing throughout the specification does not necessarily refer to the same embodiment. In addition, these specific features, structures or characteristics can be combined in one or more embodiments in any suitable manner. It should be understood that in various embodiments of the present application, the size of the sequence number of the above-mentioned processes does not mean the order of execution, and the execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application. The above-mentioned sequence numbers of the embodiments of the present application are only for description and do not represent the advantages and disadvantages of the embodiments.

[0136] It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.

[0137] The above is only an implementation method of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A sensor, characterized in that: The sensor comprises: A photosensitive element, the conductivity of which can be changed based on light irradiated to a first area of ​​the photosensitive element; wherein the photosensitive element includes a first end and a second end; A first structure, wherein the first structure comprises a first part and a second part, wherein the first part is electrically connected to the first end, and the second part is electrically connected to the second end; electrical energy is transmitted between the first structure and the photosensitive element, and different voltage drops are generated based on the conductivity of the photosensitive element, so that the output electrical signal can represent the light exposure condition; A second structure body, wherein the second structure body covers an area on the first structure body corresponding to the first area, and a reflectivity of the second structure body to light is lower than a reflectivity of the first structure body to light.

2. The sensor according to claim 1, characterized in that The sensor further includes a third structure, wherein: The third structure is arranged corresponding to the second area of ​​the photosensitive element, and is used to absorb or reflect light irradiated to the second area, and the surface where the second area is located is opposite to the surface where the first area is located.

3. The sensor according to claim 1, characterized in that The sensor further includes a fourth structure and a fifth structure, wherein: The fourth structure is arranged corresponding to the second area of ​​the photosensitive element; The fifth structure covers an area on the fourth structure corresponding to the second area, and the fifth structure is used to absorb or reflect light irradiating the second area.

4. The sensor according to any one of claims 1 to 3, characterized in that A first insulating layer is disposed between the second structure body and the first structure body.

5. The sensor according to claim 2, characterized in that A projection area of ​​the photosensitive element in a direction pointing to the third structure is within the projection area range of the third structure.

6. An electronic device, characterized in that: The electronic device comprises: a photosensitive element, comprising a first end and a second end, wherein the conductivity of the photosensitive element can be changed based on light irradiated to a first area of ​​the photosensitive element; a first structure, the first structure comprising a first portion and a second portion, the first portion being electrically connected to the first end, the second portion being electrically connected to the second end, the first structure transmitting electrical energy to the photosensitive element, and being capable of outputting a detection signal based on the conductivity of the photosensitive element, the detection signal being related to the light irradiating the first area of ​​the photosensitive element; a second structure, wherein the second structure covers an area on the first structure corresponding to the first area, and the reflectivity of the second structure to light is lower than the reflectivity of the first structure to light; The processor is electrically connected to the first structure, and can obtain the detection signal and control the state of the electronic device based on the detection signal.

7. The electronic device according to claim 6, characterized in that: The electronic device further includes: a display unit, wherein the processor is further configured to control a state of the display unit based on the detection signal.

8. The electronic device according to claim 7, characterized in that: The display unit includes a liquid crystal layer, the liquid crystal layer corresponds to a display area and a non-display area of ​​the display unit, wherein the display area can display an image; The photosensitive element is located in a preset area of ​​the non-display area, and the liquid crystal molecules in the liquid crystal layer corresponding to the preset area are configured to be non-reversible.

9. The electronic device according to claim 7, characterized in that: The electronic device further comprises: a third structure, wherein: The third structure is arranged corresponding to the second area of ​​the photosensitive element, and is used to absorb or reflect light irradiated to the second area, and the surface where the second area is located is opposite to the surface where the first area is located.

10. The electronic device according to claim 9, characterized in that: The electronic device further includes a fourth structure body and a fifth structure body, wherein: The fourth structure is arranged corresponding to the second area of ​​the photosensitive element; The fifth structure covers an area on the fourth structure corresponding to the second area, and the fifth structure is used to absorb or reflect light irradiating the second area.

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