CN109814749B - Pressure detection device, screen assembly and mobile terminal - Google Patents
Pressure detection device, screen assembly and mobile terminal Download PDFInfo
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- CN109814749B CN109814749B CN201811548051.2A CN201811548051A CN109814749B CN 109814749 B CN109814749 B CN 109814749B CN 201811548051 A CN201811548051 A CN 201811548051A CN 109814749 B CN109814749 B CN 109814749B
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Abstract
The embodiment of the invention discloses a pressure detection device, a screen assembly and a mobile terminal, wherein the pressure detection device comprises a substrate, a light emitting layer, a light absorbing layer and a photosensitive layer which are sequentially arranged, wherein: the light emitting layer is arranged on one side surface of the substrate and can emit light with a first frequency; the light absorption layer comprises a container forming a closed space and absorption liquid filling the container, the absorption liquid at least absorbs part of the light with the first frequency, and at least one side surface of the container is an elastic surface; the photosensitive layer has a photosensitive surface facing the light absorption layer, and is configured to detect the light of the first frequency passing through the light absorption layer. By the method, the sensitivity of pressure detection can be improved and the user experience can be improved on the premise of ensuring the detection precision.
Description
Technical Field
The invention relates to the technical field of electronics, in particular to a pressure detection device, a screen assembly and a mobile terminal.
Background
With the rapid development of electronic technology and multimedia information technology, a touch screen has been used to replace a conventional keyboard, mouse, and the like to complete input control in many electronic products such as computers (e.g., tablet computers), mobile phones, car navigators, and the like, which are frequently used in life and work.
Touch-sensitive screen with infrared ray touch mode is leading, can set up infrared transmission and receiving matrix in the X and the Y direction of screen, the transmission infrared light that can last scans the screen, when the user presses the touch-sensitive screen through the finger, can block infrared light's transmission in the position that the finger pressed, infrared light can't be received to the receiving terminal, the controller can be through the detection to infrared light in X and the Y direction this moment, acquire the position coordinate of infrared light transmission disconnection department, thereby confirm the position of pressing of user's finger.
However, in the process of using the touch screen mainly using the infrared touch method, the infrared light is prone to generate problems of reflection, refraction, stray light and the like, so that when a user uses the touch screen, the touch screen is insensitive to the operation of the user, and the user experience is poor.
Disclosure of Invention
The embodiment of the invention aims to provide a pressure detection device, a screen assembly and a mobile terminal, and aims to solve the problems that a touch screen in the prior art is low in flexibility and poor in user experience.
To solve the above technical problem, the embodiment of the present invention is implemented as follows:
in a first aspect, an embodiment of the present invention provides a pressure detection apparatus, which includes a substrate, a light emitting layer, a light absorbing layer, and a photosensitive layer, which are sequentially arranged, where:
the light emitting layer is arranged on one side surface of the substrate and can emit light with a first frequency;
the light absorption layer comprises a container forming a closed space and absorption liquid filling the container, the absorption liquid at least absorbs part of the light with the first frequency, and at least one side surface of the container is an elastic surface;
the photosensitive layer has a photosensitive surface facing the light absorption layer, and is configured to detect the light of the first frequency passing through the light absorption layer.
Optionally, the pressure detection apparatus further includes a light shielding layer disposed on a backside of the photosensitive surface of the photosensitive layer.
Optionally, a side of the container facing the light absorbing layer is an elastic surface, and a side of the container facing the light emitting layer is an inelastic surface.
Optionally, the light transmittance of the container is above a predetermined light transmittance threshold.
Optionally, the absorption amount of the first frequency light by the absorption liquid is positively correlated with the distance that the first frequency light passes through the absorption liquid.
Optionally, a detector and a plurality of photosensitive blocks are disposed on the photosensitive layer, the plurality of photosensitive blocks are respectively connected to the detector, the photosensitive blocks are configured to detect light intensity of the light with the first frequency and convert the detected light intensity into a current, and the detector is configured to determine a position of the photosensitive block corresponding to a change in light intensity based on a change in the current.
Optionally, the light shielding layer is used for blocking light in a predetermined frequency range from passing through.
Optionally, the light shielding layer includes a base film and a reflection increasing film, a refractive index of the reflection increasing film is greater than a refractive index of the base film, a thickness of the reflection increasing film is within a predetermined thickness range, the base film is disposed on the photosensitive layer, and the reflection increasing film is disposed on the base film.
Optionally, the reflection increasing film has a thickness of
An odd multiple of.
Optionally, the light of the first frequency is invisible light.
In a second aspect, embodiments of the present invention provide a screen assembly including a pressure detection device as described in the first aspect above.
In a third aspect, an embodiment of the present invention provides a mobile terminal, including the screen assembly according to the second aspect.
As can be seen from the above technical solutions provided by the embodiments of the present invention, the pressure detection apparatus, the screen assembly and the mobile terminal provided by the embodiments of the present invention include a substrate, a light emitting layer, a light absorbing layer and a photosensitive layer, which are sequentially arranged, wherein: the light emitting layer is arranged on one side face of the substrate and can emit light of a first frequency, the light absorption layer comprises a container forming a closed space and absorption liquid filling the container, the absorption liquid at least absorbs part of the light of the first frequency, at least one side face of the container is an elastic face, a photosensitive face of the photosensitive layer faces the light absorption layer, and the photosensitive layer is used for detecting the light of the first frequency penetrating through the light absorption layer.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below, it is obvious that the drawings in the following description are only some embodiments described in the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a pressure detecting device according to the present application;
FIG. 2 is a schematic structural diagram of another pressure detecting device according to the present application;
FIG. 3 is a schematic view of a photosensitive layer according to the present application;
FIG. 4 is a schematic structural diagram of a photosensitive layer and a light-shielding layer according to the present application;
FIG. 5 is a schematic structural diagram of a light-shielding layer according to the present application;
FIG. 6 is a flow chart of an embodiment of a pressure detection method of the present application;
FIG. 7 is a schematic view of the deformation caused by receiving pressure according to the present application;
FIG. 8 is a flow chart of another embodiment of a method of pressure sensing of the present application;
fig. 9 is a diagram of an embodiment of a mobile terminal according to the present application.
Illustration of the drawings:
100-substrate, 200-light emitting layer, 300-light absorbing layer, 301-container, 3011-elastic surface of container, 302-absorbing liquid, 400-photosensitive layer, 401-photosensitive block, 402-detector, 500-light shielding layer, 501-reflection increasing film, 502-base film.
Detailed Description
The embodiment of the invention provides a pressure detection device, a screen assembly and a mobile terminal.
In order to make those skilled in the art better understand the technical solution of the present invention, the technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the drawings in the embodiment of the present invention, and it is obvious that the described embodiment is only a part of the embodiment of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example one
An embodiment of the present invention provides a pressure detecting device unit, as shown in fig. 1, including a photosensitive layer 400, a light absorbing layer 300, a light emitting layer 200, and a substrate 100, wherein:
the substrate 100 is located at the lowermost layer of the pressure detection apparatus, and may be used for carrying, fixing, supplying power, controlling, and the like, and the substrate 100 may be a glass plate, a metal plate, or a plastic plate, which is not limited in this embodiment of the present invention.
The light emitting layer 200 is fixed on a side of the substrate 100, and may be composed of a plurality of light emitters arranged in series, the plurality of light emitters may form an array on the substrate 100, and the arrangement of the plurality of light emitters on the substrate 100 may be various. A power supply circuit may be disposed in the substrate 100, and power may be supplied to the plurality of light emitters on the light source layer 200 through the power supply circuit. Wherein a light emitting layer comprising a plurality of light emitters arranged on the substrate 100 can emit light of a first frequency (e.g., f)0) Wherein the light of the first frequency may be infrared light in a predetermined frequency range.
When the 1 or more emitters on the light emitting layer 200 emit light of the first frequency, the light of the first frequency passes through the photoabsorption layer 300, which may or may not be connected to the light emitting layer 200, and then reaches the photosensitive layer 400. The light absorbing layer 300 may include a container 301 forming a closed space, and an absorbing liquid 302 filling the container 301, wherein the absorbing liquid 302 may absorb at least a portion of the light of the first frequency, one side surface of the container 301 may be an elastic surface 3011, and the side surface opposite to the elastic surface 3011 of the container may be an inelastic surface or an elastic surface. Wherein, the container 301 can be a closed jacket, the elastic face 3011 of the container can be an outer wall of the jacket, the inelastic face of the container 301 can be an inner wall of the jacket, the elastic face 3011 of the container can be connected with the light emitting layer 200, the elastic face 3011 of the container and the inelastic face of the container 301 have good light transmittance so as to ensure that the light of the first frequency reaches the absorbing liquid 302 through the inelastic face, and the light of the first frequency reaches the photosensitive layer 300 through the elastic face 3011 of the container after passing through the absorbing liquid 302. The non-elastic surface of the container 301 has high strength and is not easy to deform, the elastic surface 3011 of the container needs to have good elasticity, when external pressure is received, the elastic surface 3011 of the container can deform due to stress, after the external force is removed, the elastic surface 3011 of the container can immediately recover to the original shape, meanwhile, the elastic surface 3011 of the container also has good durability, and because the pressure detection device is mainly used for detecting the intensity of infrared light changing along with the change of the external pressure, the elastic surface 3011 of the container has good durability, the light transmittance cannot be reduced due to long-time and frequent pressing.
Alternatively, the container may comprise a plurality of sub-containers, each sub-container being filled with the absorption liquid. It may have an elastic side and a non-elastic side. When the container is composed of a plurality of sub-containers, the amount of the absorption liquid in each sub-container is not so large, and the influence of gravity is reduced, so that the detection accuracy can be improved.
The absorption liquid 302 stored in the container 301 may be one specific frequency (e.g. the first frequency f)0) Or a liquid having a certain absorption of light at a frequency within a predetermined frequency range, the absorption liquid 302 does not absorb visible light and does not affect the propagation direction of light. When the light of the first frequency passes through the container 301 storing the absorption liquid 302 and reaches the photosensitive layer 400, the photosensitive layer 400 is connected to the elastic surface 3011 of the container, and the photosensitive layer 400 may be a film which is sensitive to the light of a specific frequency or a frequency within a predetermined frequency range. The photosensitive layer 400 has better elasticity, durability and light resistance. The photosensitive layer 400 may detect the light of the first frequency by a thermal effect, a photoelectric effect, or the like, in which the light is detected by a resistance effectThe light rays may be: when light of the first frequency irradiates the photosensitive layer 400, the temperature of the material on the photosensitive layer 400 rises due to the absorption of the light of the first frequency, so that the resistance changes, and the purpose of detecting the intensity of the light of the first frequency is achieved; the detection of light of the first frequency by the photoelectric effect may be: when the material on the photosensitive layer 400 absorbs the light of the first frequency, photoelectrons are generated due to the photoelectric effect, so that a change in current is formed, and the purpose of detecting the light is achieved. Besides detecting the light with the first frequency through the thermal effect and the photoelectric effect, the invention can also have a plurality of detection modes which are different according to specific application scenes, and the embodiment of the invention does not limit the detection modes.
The substrate 100 supplies power to the light emitting layer 200, and the light emitting layer 200 may continuously emit light of a first frequency, wherein the light of the first frequency may be infrared light in a specific frequency range, the light of the first frequency emitted by the light emitting layer 200 may reach the absorption liquid 302 through the non-elastic surface of the container 301 of the light absorption layer 300, when passing through the absorption liquid 302, part or all of the light of the first frequency may be absorbed, the light of the first frequency which is not absorbed reaches the photosensitive layer 400, and the photosensitive layer 400 generates a resistance change or photoelectrons upon detecting the light of the first frequency, thereby causing a change in current. When a finger or other objects press the pressure detection device, the photosensitive layer 400 of the pressure detection device and the elastic surface of the container 301 may be deformed in a concave manner, and at the concave position, the thickness of the absorption liquid 302 is reduced, accordingly, the portion of the light with the first frequency absorbed at the position is reduced, the light intensity reaching the photosensitive layer 400 is increased, and the resistance or photoelectrons generated at the corresponding position are changed, thereby generating a current change signal.
The pressure detection device provided by the embodiment of the invention comprises a substrate, a light emitting layer, a light absorbing layer and a photosensitive layer which are sequentially arranged, wherein: the light-emitting layer is located a side of base plate, and can launch the light of first frequency, the light absorption layer is including the container that forms the enclosure space, and fill the absorption liquid of container, the light of partial first frequency is absorbed at least to the absorption liquid, at least a side of container is the elastic surface, the photosurface of photosensitive layer is towards the light absorption layer, the photosensitive layer is used for detecting the light of the first frequency that passes the light absorption layer, and like this, based on above-mentioned pressure measurement device's structure, can reduce the interference of ambient light to pressure measurement device through the photosensitive layer, the structure of light-emitting layer and absorption liquid can be under the prerequisite of guaranteeing to detect the precision, the sensitivity of light detection under the improvement forced induction, improve user experience and feel.
Example two
The embodiment of the invention provides a pressure detection device. The pressure detection device comprises all functional units of the pressure detection device shown in fig. 1, and is improved on the basis of the functional units, and the improvement content is as follows:
as shown in fig. 2, a light shielding layer 500 may be disposed on a backside of the photosensitive layer 400, the light shielding layer 500 is mainly used for blocking interference of external light to the pressure detection device, and preventing the detection precision of the pressure detection device from being reduced due to the interference of the external light, the light shielding layer 500 also has high elasticity and durability, and the light shielding layer 500 may block light of the first frequency from passing through the light shielding layer 500, and simultaneously, internal light of the pressure detection device from passing through the light shielding layer 500 is not affected.
The light transmittance of the light absorption layer may be higher than a predetermined transmittance threshold, and a rate of change of the light transmittance of the light absorption layer with deformation may be less than a predetermined rate of change threshold. Wherein, the light transmittance can be a percentage of light of a first frequency (e.g. infrared light of the first frequency) transmitted through the light absorption layer to light of the first frequency (e.g. infrared light of the first frequency) incident into the light absorption layer, the light transmittance of the light absorption layer is better if the light transmittance of the light absorption layer is higher than a predetermined light transmittance threshold to ensure the amount of the infrared light of the first frequency transmitted through the light absorption layer, and the change rate of the light transmittance of the light absorption layer with deformation can be smaller than a predetermined change rate threshold, if the change rate of the light transmittance of the light absorption layer with deformation is higher than the predetermined change rate threshold, the change degree of the light transmittance of the light absorption layer with deformation is smaller, that is, the light transmittance of the light absorption layer is insensitive to the change of the deformation of the light absorption layer, this may result in a decrease in the sensitivity of the pressure detection device to pressure, resulting in poor sensitivity of the pressure detection device, so that the rate of change of the light transmittance of the light absorption layer with deformation may be less than a predetermined rate of change threshold.
The absorption liquid 400 can be used to absorb light of a first frequency (e.g., infrared light within a predetermined frequency range) emitted by a plurality of infrared emitters arranged on the substrate 100 (e.g., a specific frequency f)0) The emitted infrared light needs to pass through the absorption liquid 302, and at the moment, the absorption liquid 302 can absorb the infrared light within a preset frequency range, and meanwhile, the absorption liquid does not absorb visible light and does not influence the propagation direction of the light.
In addition, the absorption amount of the infrared ray by the absorption liquid 302 is positively correlated with the distance that the infrared ray passes through the absorption liquid 302. The absorption amount of the absorption liquid 302 to the infrared light is directly compared with the distance that the infrared light passes through the absorption liquid 302, that is, the absorption amount of the absorption liquid 302 to the infrared light is stronger as the thickness of the absorption liquid 302 is larger, and the intensity of the infrared light penetrating through the absorption liquid 302 is lower, for example, the ratio coefficient of the absorption degree of the absorption liquid 302 to the distance that the infrared light passes through the absorption liquid 302 is 2, if the distance that the infrared light with 6 unit intensity needs to pass through the absorption liquid 302 is 1, the absorption liquid 302 can absorb the infrared light with 2 units, the infrared light passing through the absorption liquid 302 is only 4 units, if the ratio coefficient of the absorption degree of the absorption liquid 302 to the distance that the infrared light passes through the absorption liquid 302 is 4, the absorption liquid 302 can absorb the infrared light with 4 units if the distance that the infrared light with 6 unit intensity needs to pass through the absorption liquid 302 is 1, the infrared light passing through the absorbing liquid 302 is only 2 units. In addition, the absorption capacity of the absorption liquid 302 to infrared light is irrelevant to the ambient temperature of the pressure detection device, so that the environmental interference resistance of light detection can be improved, and the detection accuracy is ensured.
The photosensitive layer 400 may be provided with a detector 402 and a plurality of photosensitive blocks 401, as shown in fig. 3, the plurality of photosensitive blocks 401 may be arranged on the photosensitive layer 400 in a predetermined arrangement manner to form a photosensitive array, each photosensitive block 401 may be led out by a lead to be connected to the detector 402, and the detector 402 may determine the position of the infrared ray intensity change according to the monitored current change on the photosensitive block 401. Wherein the photosensitive block 401 is located on the upper layer of the elastic surface of the container 301. When pressure is generated on the pressure detection device, the container 301 is deformed at the pressure generation position, the thickness of the absorption liquid 302 is changed at the corresponding position due to the deformation of the container 301, the change of the thickness of the absorption liquid 302 affects the infrared light absorption capacity of the absorption liquid, the photosensitive block 401 detects the change of the infrared light, and therefore the current on the photosensitive block 401 is changed, at the moment, the detector 402 can monitor the position of the photosensitive block 401 with the changed current, and therefore the position of the pressure on the pressure detection device is determined. For example, in fig. 3, a plurality of photosensitive blocks 401 such as a photosensitive block 4011 and a photosensitive block 4012. a photosensitive block 4019 and the like are arranged in an array on a photosensitive layer 400, each photosensitive block 401 is connected to a detector 402 by a lead, and if the detector 402 detects that a change in current is generated at the position of the photosensitive block 4012, it can be determined that a change in light intensity is generated at the positions of the photosensitive block 4011 and the photosensitive block 4012, that is, that an external pressure is received at the positions of the photosensitive block 4011 and the photosensitive block 4012.
As shown in fig. 2, the light shielding layer 500 is located on the backside of the photosensitive layer 400, the photosensitive layer 400 is located on the upper layer of the container 301, when the infrared light passes through the container 301, the infrared light reaches the photosensitive layer 400, the photosensitive layer 400 is used for detecting the infrared light, and the light shielding layer 500 can be used for blocking the interference of the external light, so as to prevent the infrared light in the external light from irradiating the photosensitive layer 400 and affecting the determination of the actual infrared light change by the photosensitive layer 400.
As shown in fig. 5, the light shielding layer 500 may include a base film 502 and a reflection increasing film 501, a refractive index of the reflection increasing film 501 may be greater than a refractive index of the base film 502, a thickness of the reflection increasing film 501 may be within a predetermined thickness range, the base film 502 is disposed on an upper layer of the photosensitive layer 400, and the reflection increasing film 501 is disposed on an upper layer of the base film 502. The refractive index of infrared ray in the outside air is n0The refractive index of infrared ray in the reflection increasing film 502 is n1Refractive index of infrared ray in the base film 502 is n2When the external infrared light irradiates to the pressure from the airWhen the device is detected, refraction and reflection can occur as shown in fig. 5, infrared rays can form a series of parallel light beams on two sides of the reflection increasing film 501, and the fresnel formula is satisfied:
wherein R in the above formula is the reflectivity of the reflection increasing film 502, i.e. the ratio of the intensity of the reflected light to the intensity of the projected light,
is the phase difference between two adjacent beams.
When the refractive index n of the reflection increasing film 5011Greater than the refractive index n of the base film 5022And the thickness h of the reflection increasing film 501 is
When the reflection rate is odd multiple, the maximum value of the reflection rate R appears, the intensity of the reflected light is far greater than that of the transmitted light, and the frequency of the infrared light in the outside air is considered to be f0Is totally reflected.
The substrate 100 supplies power to the light emitting layer 200, and the light emitting layer 200 can continuously emit light of a first frequency, wherein the light of the first frequency can be infrared light in a specific frequency range, the light of the first frequency emitted by the light emitting layer 200 can reach the absorbing liquid 302 through the non-elastic surface of the container 301 of the light absorbing layer 300, when the light of the first frequency passes through the absorbing liquid 302, a part of the light of the first frequency can be absorbed, and the unabsorbed ear light of the first frequency reaches the light sensing block 401 on the photosensitive layer 400 of the photosensitive layer 400 to sense the light of the first frequency, so as to generate resistance change or photoelectrons, and the current is transmitted to the detector 402 through the lead wires. When a finger or other objects press the pressure detection device, the light shielding layer 500, the photosensitive layer 400 and the elastic surface of the container 301 of the pressure detection device may be deformed in a concave manner, the thickness of the absorption liquid 302 at the concave position is reduced, accordingly, the portion of the light with the first frequency absorbed at the concave position is reduced, the light intensity reaching the photosensitive layer 400 is increased, the resistance or photoelectrons generated by the photosensitive block 401 at the corresponding position are changed, so as to generate a current change signal, and the detector 402 sends a corresponding control instruction according to the current change condition after acquiring the changed current signal.
The pressure detection device provided by the embodiment of the invention comprises a substrate, a light emitting layer, a light absorbing layer and a photosensitive layer which are sequentially arranged, wherein: the light-emitting layer is located a side of base plate, and can launch the light of first frequency, the light absorption layer is including the container that forms the enclosure space, and fill the absorption liquid of container, the light of partial first frequency is absorbed at least to the absorption liquid, at least a side of container is the elastic surface, the photosurface of photosensitive layer is towards the light absorption layer, the photosensitive layer is used for detecting the light of the first frequency that passes the light absorption layer, and like this, based on above-mentioned pressure measurement device's structure, can reduce the interference of ambient light to pressure measurement device through the light shield layer, the structure of light-emitting layer and absorption liquid can be under the prerequisite of guaranteeing to detect the precision, the sensitivity of light detection under the improvement forced induction, improve user experience and feel.
EXAMPLE III
Based on the functions and the composition structure of the pressure detection device, the embodiment of the present invention further provides a pressure detection method, where an execution main body of the method may be a mobile terminal, and the mobile terminal may include the pressure detection devices in the first and second embodiments, where the mobile terminal may be, for example, a mobile phone, a tablet computer, and the like, and the mobile terminal may be a mobile terminal used by a user. As shown in fig. 6, the method may specifically include the following steps:
in step S602, when deformation of the container 301 in the pressure detection device in the mobile terminal is detected, the intensity of light received by the photosensitive layer 400 after the deformation of the container 301 is obtained.
In practice, the light-emitting layer 200 in the pressure detecting device shown in FIG. 7(a) will continuously emit a specific frequency (e.g. f)0) Or emits pulses of infrared light that scan through the inelastic face of the container 301 to the absorptionThe liquid 302 is partially absorbed by the absorption liquid 302 in the container 301, and the photosensitive layer 400 detects infrared light passing through the absorption liquid 302, and generates a resistance change or generates photoelectrons according to the infrared light, thereby causing a current change.
The detector 402 can record the reference current I of each photosensitive block 401 when the pressure detecting device does not receive the pressure0，I0The current value may be a predetermined fixed current value, or may be updated when the pressure detection device is calibrated. As shown in fig. 7(b), when the pressure detecting device receives the external pressure, the light shielding layer 500, the photosensitive layer 400 and the elastic surface 3011 of the container will generate a recess, the thickness of the absorbing liquid 302 at the recess is reduced, the portion of the infrared light absorbed by the absorbing liquid is reduced, the light intensity reaching the photosensitive layer 400 is increased, and the light intensity at this time, that is, the light intensity after the deformation of the container 301, is obtained.
In step S604, the current change after the deformation of the container 301 is determined according to the light intensity.
In implementation, the change of the current at the corresponding position of the container 301 is determined according to the light intensity before and after the deformation obtained in step S602.
In step S606, position information of the deformation of the container 301 is determined according to the current change, and a corresponding control strategy is executed for the target object at the position corresponding to the position information.
The target object may be any object that can implement a control policy, such as an application object, a control object (determination, deletion, editing, and the like), a picture object, a text object, and the like, and the control policy may be any policy such as deletion, editing, opening, and the like.
In implementation, the detector analyzes the current change, determines position information of the deformation of the container 301 on the pressure detection device, determines a target object according to the position information, acquires a control strategy corresponding to the target object, and executes the control strategy. For example, in fig. 3, if the position where the deformation occurs is the position corresponding to the photosensitive block 4012, and the target object corresponding to the photosensitive block is the camera application, the corresponding control policy is to open the camera application, and when the position (the position corresponding to the photosensitive block 4012) is deformed, the control policy to open the camera application is executed.
In addition, according to the change situation of the current, different control strategies can be adopted for the target objects at the same position, for example, when the current change is larger than a certain threshold, the control strategies such as deleting or rearranging can be executed for the camera application, and when the current change is smaller than the certain threshold, the camera application can be opened.
Embodiments of the present invention provide a method for pressure detection, which may be applied to a mobile terminal including a pressure detection apparatus, which may include a substrate, a light emitting layer, a light absorbing layer, and a photosensitive layer, sequentially arranged, wherein: the light-emitting layer is located a side of base plate, and can launch the light of first frequency, the light absorption layer is including the container that forms the enclosure space, and fill the absorption liquid of container, the light of partial first frequency is absorbed at least to the absorption liquid, at least a side of container is the elastic surface, the photosurface of photosensitive layer is towards the light absorption layer, the photosensitive layer is used for detecting the light of the first frequency that passes the light absorption layer, and like this, based on above-mentioned pressure measurement device's structure, can reduce the interference of ambient light to pressure measurement device through the photosensitive layer, the structure of light-emitting layer and absorption liquid can be under the prerequisite of guaranteeing to detect the precision, the sensitivity of light detection under the improvement forced induction, improve user experience and feel.
Example four
As shown in fig. 8, an execution subject of the method may be a mobile terminal, and the mobile terminal may include the pressure detection apparatus in the first embodiment and the second embodiment, where the mobile terminal may be, for example, a mobile phone, a tablet computer, and the like, and the mobile terminal may be a mobile terminal used by a user. The method may specifically comprise the steps of:
in step S802, when it is detected that the container 301 is deformed in the pressure detection apparatus of the mobile terminal, the intensity of the light received by the photosensitive layer 400 after the deformation of the container 301 is obtained.
For a specific processing procedure of the step S802, reference may be made to relevant contents of the step S602 in the third embodiment, which is not described herein again.
In step S804, a corresponding target current is determined according to the intensity of the light.
In step S806, the current change after the deformation of the container 301 is determined based on the target current and a predetermined reference current.
In practice, the predetermined reference current may be the current without deformation, for example, in fig. 7, when the deformation is generated on the basis of fig. 7(a) to form the deformation condition in fig. 7(b), the current change after the deformation of the container 301 at this time is the current I corresponding to the deformation generated in fig. 7(b)1Current I corresponding to FIG. 7(a)0At the predetermined reference current is I0Target current is I1。
In addition, according to the target current and the current corresponding to the light intensity obtained last time, the specific processing steps are as follows:
in step S808, the current change after the deformation of the container 301 is determined according to the target current and the current corresponding to the light intensity obtained last time
In the implementation, if the deformation continues to occur on the basis of fig. 6(b), the deformation condition in fig. 6(c) is formed, and at this time, the predetermined reference current is the current I corresponding to the deformation occurring in fig. 6(b)1The target current is the current I corresponding to the deformation generated in FIG. 6(c)2The current variation is I2And I1The difference of (a).
In step S810, position information of the deformation of the container 301 is determined according to the current change, and a corresponding control strategy is executed for the target object at the position corresponding to the position information.
For a specific processing procedure of the step S810, reference may be made to relevant contents of the step S606 in the third embodiment, which is not described herein again.
Embodiments of the present invention provide a method for pressure detection, which may be applied to a mobile terminal including a pressure detection apparatus, which may include a substrate, a light emitting layer, a light absorbing layer, and a photosensitive layer, sequentially arranged, wherein: the light-emitting layer is located a side of base plate, and can launch the light of first frequency, the light absorption layer is including the container that forms the enclosure space, and fill the absorption liquid of container, the light of partial first frequency is absorbed at least to the absorption liquid, at least a side of container is the elastic surface, the photosurface of photosensitive layer is towards the light absorption layer, the photosensitive layer is used for detecting the light of the first frequency that passes the light absorption layer, and like this, based on above-mentioned pressure measurement device's structure, can reduce the interference of ambient light to pressure measurement device through the photosensitive layer, the structure of light-emitting layer and absorption liquid can be under the prerequisite of guaranteeing to detect the precision, the sensitivity of light detection under the improvement forced induction, improve user experience and feel.
EXAMPLE five
Based on the same idea, the pressure detection device provided by the embodiment of the invention further provides a screen assembly.
The screen assembly includes any one of the pressure detecting devices as described in the first and second embodiments above, the pressure detecting device including a substrate, a light emitting layer, a light absorbing layer, and a photosensitive layer arranged in this order, wherein:
the light emitting layer is arranged on one side surface of the substrate and can emit light with a first frequency;
the light absorption layer comprises a container forming a closed space and absorption liquid filling the container, the absorption liquid at least absorbs part of the light with the first frequency, and at least one side surface of the container is an elastic surface;
the photosensitive layer has a photosensitive surface facing the light absorption layer, and is configured to detect the light of the first frequency passing through the light absorption layer.
In an embodiment of the present invention, the pressure detecting apparatus further includes a light shielding layer disposed on a backside of the photosensitive surface of the photosensitive layer.
In an embodiment of the present invention, a side of the container facing the light absorbing layer is an elastic surface, and a side of the container facing the light emitting layer is an inelastic surface.
In an embodiment of the invention, the light transmittance of the container is above a predetermined light transmittance threshold.
In the embodiment of the invention, the absorption amount of the first frequency light by the absorption liquid is positively correlated with the distance of the first frequency light passing through the absorption liquid.
In the embodiment of the present invention, a detector and a plurality of photosensitive blocks are disposed on the photosensitive layer, the plurality of photosensitive blocks are respectively connected to the detector, the photosensitive blocks are configured to detect the light intensity of the light with the first frequency and convert the detected light intensity into a current, and the detector is configured to determine the position of the photosensitive block corresponding to the change of the light intensity based on the change of the current.
In the embodiment of the invention, the light shielding layer is used for blocking light in a preset frequency range from passing through.
In an embodiment of the present invention, the light shielding layer includes a base film and a reflection increasing film, a refractive index of the reflection increasing film is greater than a refractive index of the base film, a thickness of the reflection increasing film is within a predetermined thickness range, the base film is disposed on an upper layer of the photosensitive layer, and the reflection increasing film is disposed on the upper layer of the base film.
In an embodiment of the invention, the thickness of the reflection increasing film is
An odd multiple of.
An embodiment of the present invention provides a screen assembly, including a pressure detection apparatus as described in the above embodiment, the pressure detection apparatus may include a substrate, a light emitting layer, a light absorbing layer, and a photosensitive layer, which are sequentially arranged, wherein: the light-emitting layer is located a side of base plate, and can launch the light of first frequency, the light absorption layer is including the container that forms the enclosure space, and fill the absorption liquid of container, the light of partial first frequency is absorbed at least to the absorption liquid, at least a side of container is the elastic surface, the photosurface of photosensitive layer is towards the light absorption layer, the photosensitive layer is used for detecting the light of the first frequency that passes the light absorption layer, and like this, based on above-mentioned pressure measurement device's structure, can reduce the interference of ambient light to pressure measurement device through the photosensitive layer, the structure of light-emitting layer and absorption liquid can be under the prerequisite of guaranteeing to detect the precision, the sensitivity of light detection under the improvement forced induction, improve user experience and feel.
EXAMPLE six
Figure 9 is a schematic diagram of a hardware configuration of a mobile terminal implementing various embodiments of the present invention,
the mobile terminal 900 includes, but is not limited to: a radio frequency unit 901, a network module 902, an audio output unit 903, an input unit 904, a sensor 905, a display unit 906, a user input unit 907, an interface unit 908, a memory 909, a processor 910, and a power supply 911. Those skilled in the art will appreciate that the mobile terminal architecture shown in fig. 9 is not intended to be limiting of mobile terminals, and that a mobile terminal may include more or fewer components than shown, or some components may be combined, or a different arrangement of components. In the embodiment of the present invention, the mobile terminal includes, but is not limited to, a mobile phone, a tablet computer, a notebook computer, a palm computer, a vehicle-mounted terminal, a wearable device, a pedometer, and the like.
Wherein, pressure measurement device is including the base plate, light-emitting layer, photoabsorption layer and the photosensitive layer that arrange in proper order, wherein:
the light emitting layer is arranged on one side surface of the substrate and can emit light with a first frequency;
the light absorption layer comprises a container forming a closed space and absorption liquid filling the container, the absorption liquid at least absorbs part of the light with the first frequency, and at least one side surface of the container is an elastic surface;
the photosensitive layer has a photosensitive surface facing the light absorption layer, and is configured to detect the light of the first frequency passing through the light absorption layer.
In addition, the pressure detection device further comprises a light shielding layer, and the light shielding layer is arranged on the back side of the photosensitive surface of the photosensitive layer.
In addition, the side surface of the container facing the light absorbing layer is an elastic surface, and the side surface of the container facing the light emitting layer is an inelastic surface.
Further, the light transmittance of the container is above a predetermined light transmittance threshold.
In addition, the absorption amount of the first frequency light by the absorption liquid is positively correlated with the distance that the first frequency light passes through the absorption liquid.
In addition, a detector and a plurality of photosensitive blocks are arranged on the photosensitive layer, the plurality of photosensitive blocks are respectively connected with the detector, the photosensitive blocks are used for detecting the light intensity of the light with the first frequency and converting the detected light intensity into current, and the detector is used for determining the position of the photosensitive block corresponding to the change of the light intensity based on the change of the current.
In addition, the light shielding layer is used for blocking light in a preset frequency range from passing through.
In addition, the light shielding layer includes a base film and a reflection increasing film, a refractive index of the reflection increasing film is greater than a refractive index of the base film, a thickness of the reflection increasing film is within a predetermined thickness range, the base film is disposed on an upper layer of the photosensitive layer, and the reflection increasing film is disposed on the upper layer of the base film.
In addition, the thickness of the reflection increasing film is
An odd multiple of.
An embodiment of the present invention provides a mobile terminal, including a pressure detection device, where the pressure detection device includes a substrate, a light emitting layer, a light absorbing layer, and a photosensitive layer, which are arranged in sequence, where: the light-emitting layer is located a side of base plate, and can launch the light of first frequency, the light absorption layer is including the container that forms the enclosure space, and fill the absorption liquid of container, the light of partial first frequency is absorbed at least to the absorption liquid, at least a side of container is the elastic surface, the photosurface of photosensitive layer is towards the light absorption layer, the photosensitive layer is used for detecting the light of the first frequency that passes the light absorption layer, and like this, based on above-mentioned pressure measurement device's structure, can reduce the interference of ambient light to pressure measurement device through the photosensitive layer, the structure of light-emitting layer and absorption liquid can be under the prerequisite of guaranteeing to detect the precision, the sensitivity of light detection under the improvement forced induction, improve user experience and feel.
It should be understood that, in the embodiment of the present invention, the radio frequency unit 901 may be used for receiving and sending signals during a message transmission and reception process or a call process, and specifically, after receiving downlink data from a base station, the downlink data is processed by the processor 910; in addition, the uplink data is transmitted to the base station. Generally, the radio frequency unit 901 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like. In addition, the radio frequency unit 901 can also communicate with a network and other devices through a wireless communication system.
The mobile terminal provides the user with wireless broadband internet access via the network module 902, such as helping the user send and receive e-mails, browse web pages, and access streaming media.
The audio output unit 903 may convert audio data received by the radio frequency unit 901 or the network module 902 or stored in the memory 909 into an audio signal and output as sound. Also, the audio output unit 903 may also provide audio output related to a specific function performed by the mobile terminal 900 (e.g., a call signal reception sound, a message reception sound, etc.). The audio output unit 903 includes a speaker, a buzzer, a receiver, and the like.
The input unit 904 is used to receive audio or video signals. The input Unit 904 may include a Graphics Processing Unit (GPU) 9041 and a microphone 9042, and the Graphics processor 9041 processes image data of a still picture or video obtained by an image capturing device (such as a camera) in a video capture mode or an image capture mode. The processed image frames may be displayed on the display unit 906. The image frames processed by the graphic processor 9041 may be stored in the memory 909 (or other storage medium) or transmitted via the radio frequency unit 901 or the network module 902. The microphone 9042 can receive sounds and can process such sounds into audio data. The processed audio data may be converted into a format output transmittable to a mobile communication base station via the radio frequency unit 901 in case of the phone call mode.
The mobile terminal 900 also includes at least one sensor 905, such as a light sensor, motion sensor, and other sensors. Specifically, the light sensor includes an ambient light sensor that can adjust the brightness of the display panel 9061 according to the brightness of ambient light, and a proximity sensor that can turn off the display panel 9061 and/or backlight when the mobile terminal 900 is moved to the ear. As one of the motion sensors, the accelerometer sensor can detect the magnitude of acceleration in each direction (generally three axes), detect the magnitude and direction of gravity when stationary, and can be used to identify the posture of the mobile terminal (such as horizontal and vertical screen switching, related games, magnetometer posture calibration), and vibration identification related functions (such as pedometer, tapping); the sensors 905 may also include a fingerprint sensor, a pressure sensor, an iris sensor, a molecular sensor, a gyroscope, a barometer, a hygrometer, a thermometer, an infrared sensor, etc., which are not described in detail herein.
The display unit 906 is used to display information input by the user or information provided to the user. The Display unit 906 may include a Display panel 9061, and the Display panel 9061 may be configured in the form of a Liquid Crystal Display (LCD), an Organic Light-Emitting Diode (OLED), or the like.
The user input unit 907 may be used to receive input numeric or character information and generate key signal inputs related to user settings and function control of the mobile terminal. Specifically, the user input unit 907 includes a touch panel 9071 and other input devices 9072. The touch panel 9071, also referred to as a touch screen, may collect touch operations by a user on or near the touch panel 9071 (e.g., operations by a user on or near the touch panel 9071 using a finger, a stylus, or any other suitable object or accessory). The touch panel 9071 may include two parts, a touch detection device and a touch controller. The touch detection device detects the touch direction of a user, detects a signal brought by touch operation and transmits the signal to the touch controller; the touch controller receives touch information from the touch sensing device, converts the touch information into touch point coordinates, sends the touch point coordinates to the processor 910, receives a command from the processor 910, and executes the command. In addition, the touch panel 9071 may be implemented by using various types such as a resistive type, a capacitive type, an infrared ray, and a surface acoustic wave. The user input unit 907 may include other input devices 9072 in addition to the touch panel 9071. Specifically, the other input devices 9072 may include, but are not limited to, a physical keyboard, function keys (such as a volume control key, a switch key, and the like), a track ball, a mouse, and a joystick, which are not described herein again.
Further, the touch panel 9071 may be overlaid on the display panel 9061, and when the touch panel 9071 detects a touch operation on or near the touch panel 9071, the touch panel is transmitted to the processor 910 to determine the type of the touch event, and then the processor 910 provides a corresponding visual output on the display panel 9061 according to the type of the touch event. Although in fig. 9, the touch panel 9071 and the display panel 9061 are two independent components to implement the input and output functions of the mobile terminal, in some embodiments, the touch panel 9071 and the display panel 9061 may be integrated to implement the input and output functions of the mobile terminal, which is not limited herein.
The interface unit 908 is an interface through which an external device is connected to the mobile terminal 900. For example, the external device may include a wired or wireless headset port, an external power supply (or battery charger) port, a wired or wireless data port, a memory card port, a port for connecting a device having an identification module, an audio input/output (I/O) port, a video I/O port, an earphone port, and the like. The interface unit 908 may be used to receive input from external devices (e.g., data information, power, etc.) and transmit the received input to one or more elements within the mobile terminal 900 or may be used to transmit data between the mobile terminal 900 and external devices.
The memory 909 may be used to store software programs as well as various data. The memory 909 may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required for at least one function (such as a sound playing function, an image playing function, etc.), and the like; the storage data area may store data (such as audio data, a phonebook, etc.) created according to the use of the cellular phone, and the like. Further, the memory 409 may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device.
The processor 910 is a control center of the mobile terminal, connects various parts of the entire mobile terminal using various interfaces and lines, and performs various functions of the mobile terminal and processes data by running or executing software programs and/or modules stored in the memory 909 and calling data stored in the memory 909, thereby performing overall monitoring of the mobile terminal. Processor 910 may include one or more processing units; preferably, the processor 910 may integrate an application processor, which mainly handles operating systems, user interfaces, application programs, etc., and a modem processor, which mainly handles wireless communications. It is to be appreciated that the modem processor described above may not be integrated into processor 910.
The mobile terminal 900 may also include a power supply 911 (e.g., a battery) for powering the various components, and preferably, the power supply 911 is logically connected to the processor 910 through a power management system that provides power management functions to manage charging, discharging, and power consumption.
Preferably, an embodiment of the present invention further provides a mobile terminal, which includes a processor 910, a memory 909, and a computer program stored in the memory 909 and capable of running on the processor 910, and when the computer program is executed by the processor 910, the processes of the embodiment of the pressure detection method are implemented, and the same technical effect can be achieved, and in order to avoid repetition, details are not described here again.
EXAMPLE seven
The embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the computer program implements each process of the embodiment of the pressure detection method, and can achieve the same technical effect, and in order to avoid repetition, details are not repeated here. The computer-readable storage medium may be a Read-only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk.
Embodiments of the present invention provide a computer-readable storage medium, where the structure of the pressure detection apparatus can reduce interference of ambient light, and the structures of the light emitting layer and the absorption liquid can improve sensitivity of light detection under pressure sensing and improve user experience on the premise of ensuring detection accuracy.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
In a typical configuration, a computing device includes one or more processors (CPUs), input/output interfaces, network interfaces, and memory.
The memory may include forms of volatile memory in a computer readable medium, Random Access Memory (RAM) and/or non-volatile memory, such as Read Only Memory (ROM) or flash memory (flash RAM). Memory is an example of a computer-readable medium.
Computer-readable media, including both non-transitory and non-transitory, removable and non-removable media, may implement information storage by any method or technology. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), Static Random Access Memory (SRAM), Dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), Read Only Memory (ROM), Electrically Erasable Programmable Read Only Memory (EEPROM), flash memory or other memory technology, compact disc read only memory (CD-ROM), Digital Versatile Discs (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices, or any other non-transmission medium that can be used to store information that can be accessed by a computing device. As defined herein, a computer readable medium does not include a transitory computer readable medium such as a modulated data signal and a carrier wave.
It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The above description is only an example of the present invention, and is not intended to limit the present invention. Various modifications and alterations to this invention will become apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.
Claims (11)
1. A pressure detecting device, comprising a substrate, a light emitting layer, a light absorbing layer, and a photosensitive layer, which are arranged in this order, wherein:
the light emitting layer is arranged on one side surface of the substrate and can emit light with a first frequency;
the light absorption layer comprises a container forming a closed space and absorption liquid filling the container, the absorption liquid at least absorbs part of the light with the first frequency, and at least one side surface of the container is an elastic surface;
a photosensitive surface of the photosensitive layer facing the light-absorbing layer, the photosensitive layer being configured to detect light of the first frequency that passes through the light-absorbing layer;
the absorption amount of the first frequency light by the absorption liquid is positively correlated with the distance of the first frequency light passing through the absorption liquid.
2. The pressure detection device of claim 1, further comprising a light blocking layer disposed on a backside of the photosensitive surface of the photosensitive layer.
3. The pressure detecting apparatus according to claim 1, wherein a side of the container facing the light absorbing layer is an elastic surface, and a side of the container facing the light emitting layer is an inelastic surface.
4. A pressure detection device as claimed in claim 3 wherein the light transmittance of the container is above a predetermined light transmittance threshold.
5. The pressure detecting device as claimed in claim 2, wherein the photosensitive layer is provided with a detector and a plurality of photosensitive blocks, the plurality of photosensitive blocks are respectively connected to the detector, the photosensitive blocks are configured to detect the light intensity of the light of the first frequency and convert the detected light intensity into the current, and the detector is configured to determine the position of the photosensitive block corresponding to the light intensity change based on the change of the current.
6. The pressure detection device of claim 2, wherein the light blocking layer is configured to block light of a predetermined frequency range from passing therethrough.
7. The pressure detecting apparatus according to claim 6, wherein the light shielding layer includes a base film and a reflection increasing film, a refractive index of the reflection increasing film is larger than a refractive index of the base film, a thickness of the reflection increasing film is within a predetermined thickness range, the base film is disposed on an upper layer of the photosensitive layer, and the reflection increasing film is disposed on an upper layer of the base film.
8. The pressure detection device of claim 7, wherein the reflection increasing film has a thickness of
An odd multiple of.
9. The pressure detection device of claim 1, wherein the first frequency of light is invisible light.
10. A screen assembly, characterized in that the screen assembly comprises a pressure detection device according to any one of claims 1-9.
11. A mobile terminal, characterized in that it comprises a screen assembly according to claim 10.
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