WO2023197366A1 - 光束发射器及光触控显示系统 - Google Patents

光束发射器及光触控显示系统 Download PDF

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Publication number
WO2023197366A1
WO2023197366A1 PCT/CN2022/088720 CN2022088720W WO2023197366A1 WO 2023197366 A1 WO2023197366 A1 WO 2023197366A1 CN 2022088720 W CN2022088720 W CN 2022088720W WO 2023197366 A1 WO2023197366 A1 WO 2023197366A1
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WIPO (PCT)
Prior art keywords
projection
light source
light
state
beam emitter
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2022/088720
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English (en)
French (fr)
Inventor
陆志涛
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TCL China Star Optoelectronics Technology Co Ltd
Original Assignee
TCL China Star Optoelectronics Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by TCL China Star Optoelectronics Technology Co Ltd filed Critical TCL China Star Optoelectronics Technology Co Ltd
Priority to US17/755,874 priority Critical patent/US12164729B2/en
Publication of WO2023197366A1 publication Critical patent/WO2023197366A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/0412—Digitisers structurally integrated in a display
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/0414—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means using force sensing means to determine a position
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/0416—Control or interface arrangements specially adapted for digitisers
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/042—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means
    • G06F3/0421—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means by interrupting or reflecting a light beam, e.g. optical touch-screen

Definitions

  • the present application relates to the field of display, and in particular, to a beam emitter and an optical touch display system.
  • Display technology is widely used in various fields of society, and people's demand for interactive display technology is increasing day by day.
  • Touch display technology has been widely used commercially, but it has the problem of being unable to interact remotely.
  • One type of remote interaction technology can realize remote interaction through motion capture analysis through cameras. However, its recognition accuracy is low, which will cause insensitive response, misoperation and other phenomena that seriously affect the user experience.
  • Another type of remote interaction technology is " "Air Mouse”, “Air Mouse” can only recognize relative positions and cannot intuitively feedback absolute position coordinates.
  • Near-end interaction usually uses a capacitive display panel for touch interaction, so this structure cannot perform remote interaction. There is an urgent need for a touch display system that can combine remote interaction and near-end interaction.
  • Embodiments of the present application provide a beam emitter and an optical touch display system to address the increasing demand for interactive display technology.
  • Touch display technology has been widely used commercially, but its existence prevents remote interaction. There is an urgent need for a touch display system that can combine remote interaction and near-end interaction.
  • the embodiment of the present application provides a beam emitter, including:
  • a main body with a projection portion provided on the main body
  • the projection state of the beam emitter includes a third state in which the projection part projects infrared light. a projection state and a second projection state in which the projection part projects visible light;
  • a power component arranged on the main body and connected to the first light source and the second light source;
  • a touch sensor arranged on the main body
  • a control module is provided on the main body and is respectively connected to the power component, the touch sensor, the first light source and the second light source.
  • the control module is used to control the state of the touch sensor according to the state of the touch sensor.
  • the beam emitter is controlled to switch between the first projection state and the second projection state.
  • the touch sensor includes a response state and a non-response state.
  • the control module controls the beam emitter to be in the first projection state.
  • the control module controls the beam emitter to be in the second projection state.
  • the first light source includes a first control switch
  • the second light source includes a second control switch
  • both the first control switch and the second control switch are connected to the control module.
  • the main body includes a receiving part
  • the projection part includes a first projection part and a second projection part, both the first projection part and the second projection part are connected with the receiving part;
  • the first light source is disposed in the accommodating part.
  • the infrared light emitted by the first light source is projected through the first projection part.
  • the second light source is disposed in the accommodating part.
  • the visible light emitted by the second light source is Projected through the second projection part, the touch sensor is disposed at the projection port of the first projection part.
  • the touch sensor includes a pressure sensor, and the pressure sensor is disposed around the projection port of the first projection part.
  • first projection part and the second projection part are respectively disposed at both ends of the receiving part, and the projection port of the first projection part is opposite to the projection port of the second projection part. Back settings.
  • both the visible light and the infrared light projected by the beam emitter include at least two different polarization directions.
  • the beam emitter further includes a third light source for emitting auxiliary light, and a clustering structure disposed at the projection port of the projection part.
  • the infrared light emitted by the first light source, and the The visible light emitted by the second light source is parallel to the auxiliary light, and a half-wave plate is provided on the light exit side of the third light source;
  • the infrared light emitted by the first light source and the auxiliary light emitted by the third light source are projected through the cluster structure in a linearly polarized state;
  • the visible light emitted by the second light source and the auxiliary light emitted by the third light source are projected in a linearly polarized light state through the clustering structure.
  • the beam emitter further includes a quarter wave plate disposed at the projection port of the projection part, and the infrared light emitted by the first light source and/or the infrared light emitted by the second light source Visible light is projected through the quarter-wave plate in a circularly polarized state.
  • This application also provides a light touch display system, including:
  • Beam emitters including:
  • a main body with a projection portion provided on the main body
  • the projection state of the beam emitter includes a third state in which the projection part projects infrared light. a projection state and a second projection state in which the projection part projects visible light;
  • a power component arranged on the main body and connected to the first light source and the second light source;
  • a touch sensor arranged on the main body
  • a control module is provided on the main body and is respectively connected to the power component, the touch sensor, the first light source and the second light source.
  • the control module is used to adjust the operation of the touch sensor according to the different conditions of the touch sensor.
  • State controls the projection state of the beam emitter to switch between the first projection state and the second projection state;
  • An optical touch display panel includes a display function part, a photosensitive circuit and a control unit;
  • the photosensitive circuit includes a plurality of photosensitive units, and a plurality of the photosensitive units are arranged at intervals on the display function part, and the display function part and the The photosensitive circuits are respectively connected to the control unit;
  • the photosensitive circuit is used to sense the light projected by the beam emitter and send a sensing signal to the control unit, and the control unit is used to control the display function part to display the beam emitter according to the sensing signal.
  • the position of the cast ray is used to control the display function part to display the beam emitter according to the sensing signal.
  • the light projected by the beam emitter irradiates the optical touch display panel, and the light projected by the beam emitter covers at least four of the photosensitive units.
  • the touch sensor includes a response state and a non-response state.
  • the control module controls the beam emitter to be in the first projection state.
  • the control module controls the beam emitter to be in the second projection state.
  • the first light source includes a first control switch
  • the second light source includes a second control switch
  • both the first control switch and the second control switch are connected to the control module.
  • the main body includes a receiving part
  • the projection part includes a first projection part and a second projection part, both the first projection part and the second projection part are connected with the receiving part;
  • the first light source is disposed in the accommodating part.
  • the infrared light emitted by the first light source is projected through the first projection part.
  • the second light source is disposed in the accommodating part.
  • the visible light emitted by the second light source is Projected through the second projection part, the touch sensor is disposed at the projection port of the first projection part.
  • the touch sensor includes a pressure sensor, and the pressure sensor is disposed around the projection port of the first projection part.
  • first projection part and the second projection part are respectively disposed at both ends of the receiving part, and the projection port of the first projection part is opposite to the projection port of the second projection part. Back settings.
  • both the visible light and the infrared light projected by the beam emitter include at least two different polarization directions.
  • the beam emitter further includes a third light source for emitting auxiliary light, and a clustering structure disposed at the projection port of the projection part.
  • the infrared light emitted by the first light source, and the The visible light emitted by the second light source is parallel to the auxiliary light, and a half-wave plate is provided on the light exit side of the third light source;
  • the infrared light emitted by the first light source and the auxiliary light emitted by the third light source are projected through the cluster structure in a linearly polarized state;
  • the visible light emitted by the second light source and the auxiliary light emitted by the third light source are projected in a linearly polarized light state through the clustering structure.
  • the clustering structure includes a convex lens.
  • the beam emitter further includes a quarter wave plate disposed at the projection port of the projection part, and the infrared light emitted by the first light source and/or the infrared light emitted by the second light source Visible light is projected through the quarter-wave plate in a circularly polarized state.
  • the beam emitter includes a main body, a first light source and a second light source provided on the main body, a power component connected to the first light source and the second light source, a touch sensor and a control module.
  • the projection state of the beam emitter includes A first projection state for projecting infrared light and a second projection state for projecting visible light.
  • the control module is configured to control the projection state of the beam emitter between the first projection state and the third projection state according to different states of the touch sensor. Switching between two projection states, this setting method enables the beam transmitter to take into account both long-range interaction and short-range interaction modes, and can automatically switch the projection state according to actual usage needs, making the user experience better.
  • Figure 1 is a schematic structural diagram of a beam emitter provided by an embodiment of the present application.
  • FIG. 2 is a schematic connection diagram of the control module of the beam transmitter provided by the embodiment of the present application.
  • Figure 3 is a schematic structural diagram of another beam emitter provided by an embodiment of the present application.
  • Figure 4 is a schematic structural diagram of another beam emitter provided by an embodiment of the present application.
  • Figure 5 is a schematic diagram of a beam emitter projecting linearly polarized light according to an embodiment of the present application
  • Figure 6 is a schematic diagram of a beam emitter projecting linearly polarized light provided by an embodiment of the present application
  • Figure 7 is a schematic diagram of the remote interaction mode of a light touch display system provided by an embodiment of the present application.
  • Figure 8 is a schematic diagram of remote interaction of a light touch display system provided by an embodiment of the present application.
  • Figure 9 is a schematic diagram of a short-range interaction mode of a light touch display system provided by an embodiment of the present application.
  • Figure 10 is a schematic diagram of short-range interaction of a light touch display system provided by an embodiment of the present application.
  • Figure 11 is a photosensitive circuit architecture diagram of an optical touch display panel provided by an embodiment of the present application.
  • Figure 12 is a schematic diagram of an interaction mode of a light touch display system provided by an embodiment of the present application.
  • Embodiments of the present application provide a beam emitter and a light touch display system. Each is explained in detail below. It should be noted that the order of description of the following embodiments does not limit the preferred order of the embodiments.
  • the embodiment of the present application provides a beam emitter A1, specifically referring to Figures 1 to 6, including:
  • Main body 10 the main body 10 is provided with a projection part 20;
  • a first light source L1 is provided on the main body 10 for emitting infrared light
  • a second light source L2 is provided on the main body 10 for emitting visible light.
  • the projection state of the beam emitter A1 includes the projection part 20 projects infrared light in a first projection state and the projection part 20 projects visible light in a second projection state;
  • the power supply assembly 100 is provided on the main body 10 and connected to the first light source L1 and the second light source L2;
  • Touch sensor 300 is provided on the main body 10;
  • the control module 200 is disposed on the main body 10 and is respectively connected to the power component 100, the touch sensor 300, the first light source L1 and the second light source L2.
  • the control module 200 is used to control the Different states of the touch sensor 300 control the projection state of the beam emitter A1 to switch between the first projection state and the second projection state.
  • the beam emitter A1 includes a main body 10 , and the main body 10 includes a housing and a receiving portion in the housing.
  • the receiving portion is used to dispose the first light source L1 , the second light source L2 , the power supply assembly 100 and the control module 200 , the touch sensor 300 may be disposed on the receiving part or on the projection part 20;
  • the first light source L1 is used to emit infrared light, and its wavelength can be one of 980nm, 808nm, and 850nm;
  • the second light source L2 is used to emit visible light
  • the visible light may be one of red light, orange light, yellow light, green light, blue light, cyan light, violet light or other colors of light
  • the wavelength and the type and wavelength of the invisible light can be designed according to the actual sensitive section of the photosensitive unit SD on the touch display panel A2, preferably red light.
  • the control module 200 is connected to the power supply component 100 , the touch sensor 300 , the first light source L1 and the second light source L2 , and the power supply component 100 is used to provide power to the control module 200 , the touch sensor 300, the first light source L1 and the second light source L2 are powered, and the control module 200 controls the working status of the first light source L1 and the second light source L2, specifically adjusting the first light source L1 and the second light source L2 according to the status of the touch sensor 300. The working status of the second light source L2.
  • the touch sensor 300 includes a response state and a non-response state.
  • the control module 200 adjusts the projection state of the beam emitter A1 according to the state of the touch sensor 300, that is, whether to project infrared light or visible light, and to project infrared light.
  • Light is the near-end interaction mode
  • projected visible light is the long-range interaction mode.
  • the touch sensor 300 may include a distance sensing sensor, wherein the touch sensor 300 may be disposed in the accommodating part or in the projection part 20 .
  • it may be an ultrasonic proximity switch.
  • the control module 200 controls the first One light source L1 is in a state of emitting infrared light, and the second light source L2 is turned off to realize near-end interaction.
  • the ultrasonic proximity switch When the ultrasonic proximity switch is outside the sensing distance, the ultrasonic proximity switch is in a non-responsive state, and the control module 200 controls the second light source L2 to be in a non-responsive state. In the state of emitting visible light, the first light source L1 is turned off to achieve remote interaction.
  • the touch sensor 300 may include a pressure sensor. In a specific embodiment, it may be a telescopic pressure sensor, a capacitive pressure sensor, or a piezoelectric pressure sensor.
  • the touch sensor 300 is provided on the projection part 20 .
  • the control module 200 controls the first light source L1 to be in a state of emitting infrared light, and the second light source L2 Close to achieve near-end interaction.
  • the pressure sensor is in a floating state away from the touch display panel A2, the pressure sensor is in a non-responsive state.
  • the control module 200 controls the second light source L2 to emit visible light, and the first light source L1 Close to achieve remote interaction.
  • this embodiment includes a main body 10, a first light source L1 and a second light source L2 provided on the main body 10, a power supply assembly 100 connected to the first light source L1 and the second light source L2, by setting the beam emitter A1.
  • the projection state of the light beam emitter A1 includes a first projection state of projecting infrared light and a second projection state of projecting visible light.
  • the control module 200 is used to control according to different states of the touch sensor 300.
  • the projection state of the beam emitter A1 is switched between the first projection state and the second projection state. This arrangement enables the beam emitter A1 to take into account both long-range interaction and short-range interaction modes, and can Automatically switch the projection state according to actual usage needs, making the user experience better.
  • the touch sensor 300 includes a response state and a non-response state.
  • the control module 200 controls the beam emitter A1 to project the first state
  • the control module 200 controls the beam emitter A1 to be in the second projection state.
  • the response state and the non-response state of the touch sensor 300 depend on the type of the specific touch sensor 300.
  • the response state is when the pressure sensor is squeezed. Pressure (when the pressure sensor is a capacitive sensor, the capacitance of the sensor changes due to squeezing), generating a current signal, this state is the response state; the non-responsive state means that the pressure sensor is not squeezed, and no current signal is generated;
  • the touch sensor 300 is not a distance sensor, the distance sensor has a preset distance value. When it is close to an obstacle, the sensor receives the returned ultrasonic wave and generates a current signal. This state is the response state; the non-response state is the distance sensor. The distance to the obstacle is greater than the preset distance value, the returned ultrasonic wave is not received, and no current signal is generated;
  • remote interaction can be understood as remote identification
  • short-range interaction can be understood as writing mode
  • the beam emitter A1 can automatically switch the use state according to the actual needs of the user, improving the user's experience. Since laser reflection into the human eye can easily cause damage to the human eye, it will Setting the near-end interaction to use infrared light can reduce the damage to human eyes caused by the laser emitted by the beam emitter A1.
  • the first light source L1 includes a first control switch C1
  • the second light source L2 includes a second control switch C2
  • the control switches C2 are all connected to the control module 200 .
  • the first light source L1 includes a first control switch C1 and a first luminous body connected to the first control switch C1.
  • the first luminous body includes one of a tungsten lamp, a hydrogen lamp, and a tritium lamp.
  • the second light source L2 includes a second control switch C2 and a second luminous body connected to the second control switch C2.
  • the second luminous body includes a deuterium lamp.
  • the first control switch C1 can be turned on or off manually, and can also be turned on or off through the control module 200 .
  • the second control switch C2 can be turned on or off manually, and can also be turned on or off through the control module 200 . It can be understood that the opening or closing of the first light source L1 and the second light source L2 can be manually controlled according to the actual needs of the user, so that when the user only needs to use a single interaction method, the light source can be prevented from being switched accidentally due to misoperation, further improving the It can also save the power of the power supply assembly 100 and improve the energy-saving performance of the beam sensor.
  • the main body 10 includes a receiving part
  • the projection part 20 includes a first projection part 201 and a second projection part 202
  • the first projection part 201 and the The second projection parts 202 are all connected with the receiving part;
  • the first light source L1 is disposed in the accommodating part.
  • the infrared light emitted by the first light source L1 is projected through the first projection part 201.
  • the second light source L2 is disposed in the accommodating part.
  • the second light source L1 is disposed in the accommodating part.
  • the visible light emitted by the light source L2 is projected through the second projection part 202 , and the touch sensor 300 is disposed at the projection port of the first projection part 201 .
  • first projection part 201 and the second projection part 202 may be disposed on the same side of the accommodating part, and the first projection part 201 and the second projection part 202 may be disposed on both sides of the accommodating part;
  • both the first projection part 201 and the second projection part 202 may be annular structures, and the infrared light emitted by the first light source L1 passes through the hollow of the annular structure of the first projection part 201 The visible light emitted by the second light source L2 passes through the hollow area of the annular structure of the second projection part 202 before being projected.
  • the touch sensor 300 can be disposed at the projection port of the first projection part 201 for near-end interaction.
  • the touch sensor 300 uses a pressure sensor. Through the pressure generated by writing, the touch sensor 300 switches between a response state and a non-response state, and the control module 200 controls the beam emitter A1 in the near-end interaction mode and the remote interaction mode.
  • the first projection part 201 and the second projection part 202 can be arranged on the same side of the accommodation part; at the same time, the pressure sensor can also collect the near-end interaction of the beam emitter A1
  • the writing intensity is analyzed and processed by the optical touch display system and fed back to the optical touch display panel A2 to display the depth information during writing, which can then display the stroke of the pen when writing, further improving the user experience.
  • the first projection part 201 and the second projection part 202 may be located at both ends of the accommodation part.
  • the second control switch C2 of the second light source L2 used for remote interaction can be manually turned off. In this state, the state of the first light source L1 used for near-end interaction is switched between on and off.
  • the power supply of the first light source L1 that emits infrared light can be cut off in time, thereby reducing the energy consumption of the beam emitter A1.
  • the technical solution for displaying the touch depth on the touch display panel A2 through the induction of the pressure sensor can be: the pressure sensor generates a pressure electric signal, and the built-in wireless signal of the beam transmitter A1 transmits The module transmits pressure-sensitive electrical signals, and the wireless signal receiving module built in the touch display panel A2 receives the pressure-sensitive electrical signals and transmits them to the control unit A22.
  • the control unit A22 may include a central processing module and a digital signal processing module. Digital The signal processing module converts the pressure-sensitive electrical signal into a pressure-sensitive digital signal.
  • the pressure-sensitive digital signal is analyzed by the central processing module and displayed on the optical touch display panel A2. According to the strength of the received piezoelectric signal, at the corresponding position Display different touch depths.
  • the control unit A22 can be a system on chip (SOC). By setting the SOC in the light touch display system, the light touch can be realized during near-end interaction.
  • the writing depth information can be displayed on the control display system.
  • the touch sensor 300 by disposing the touch sensor 300 at the projection port of the first projection part 201 for near-end interaction, the touch sensor 300 for switching between remote interaction and near-end interaction can be combined with the pressure sensor for writing to display depth.
  • the sensor is combined into one, that is, two functions can be realized through one pressure sensor, which reduces production costs and makes the structure of the beam emitter A1 more streamlined.
  • the touch sensor 300 includes a pressure sensor, and the pressure sensor is arranged around the projection port of the first projection part 201 .
  • the pressure-sensitive sensor is arranged around the projection port of the first projection part 201, so that the pressure-sensitive sensor is arranged around the infrared light passing through the first projection part 201, so that the user can use any pen holding method or tilt angle, Both can sensitively detect the strength of writing, making the display of depth detection (that is, the tip of the writing stroke) more accurate.
  • the pressure sensor By arranging the pressure sensor around the projection port of the first projection part 201, the accuracy of the pressure sensor detecting the writing force can be improved. Compared with the telescopic pressure sensor shown in Figure 3, it can Avoid using programs to correct the deviation between the actual writing position of the pen tip and the actual irradiation point of infrared light, improve the accuracy of near-end interaction, that is, the writing position, and improve the user experience.
  • the first projection part 201 and the second projection part 202 are respectively provided at both ends of the accommodating part.
  • the port is arranged opposite to the projection port of the second projection part 202 .
  • the structure of the beam emitter A1 is more reasonable and the diameter is thinner. Without affecting the actual use, the user has a better hand feeling when interacting near the end (i.e. writing). Improve user experience.
  • the visible light and the infrared light projected by the beam emitter A1 include at least two different polarization directions.
  • the outer layer of the touch display panel A2 is a polarizing film.
  • the laser visible light and infrared light
  • the laser emitted by the beam emitter A1 first falls on the polarizing film and passes through it. Only after it is transparent can it reach the internal sensor.
  • the polarization angle of the laser is orthogonal to the angle of the polarizing film, the laser cannot pass through the polarizing film, and the photosensitive unit SD cannot obtain the corresponding laser information, causing an unrecognizable problem.
  • the technology of this embodiment is provided plan.
  • the beam emitter A1 further includes a third light source L3 for emitting auxiliary light, and a beam clustering structure 60 disposed at the projection port of the projection part 20.
  • the first light source L1 emits The infrared light and the visible light emitted by the second light source L2 are parallel to the auxiliary light, and a half-wave plate 50 is provided on the light exit side of the third light source L3;
  • the infrared light emitted by the first light source L1 and the auxiliary light emitted by the third light source L3 are projected through the clustering structure 60 in a linearly polarized state; and/or
  • the visible light emitted by the second light source L2 and the auxiliary light emitted by the third light source L3 are projected through the clustering structure 60 in a linearly polarized state.
  • the auxiliary light emitted by the third light source L3 may be infrared light or visible light, which may be adjusted according to actual needs.
  • the beam clustering structure 60 can be a clustering lens, such as a convex lens, and the two beams of light (auxiliary light and infrared light/visible light) converge into one beam after passing through the beam clustering structure 60 , so that the diameter of the beam emitted by the beam emitter A1 remains unchanged.
  • the intensity of the projection light emitted by the beam emitter A1 is enhanced, so that the projection light has stronger penetrability, so that the photosensitive unit SD on the touch display panel A2 can sense the projection light.
  • the beam emitter A1 further includes a quarter-wave plate 70 disposed at the projection port of the projection part 20 , and the infrared light emitted by the first light source L1 and/or the third The visible light emitted by the two light sources L2 is projected through the quarter wave plate 70 in a circularly polarized state.
  • Figure 6 takes the first light source L1 as an example to illustrate the structure.
  • the light source can also be replaced by the second light source L2.
  • the quarter-wave plate 70 can be embedded in the ring-shaped third light source.
  • This application also provides a light touch display system, as shown in Figures 7, 8, 9 and 10, including:
  • Beam emitter A1 as shown in Figure 1, includes:
  • Main body 10 the main body 10 is provided with a projection part 20;
  • a first light source L1 is provided on the main body 10 for emitting infrared light
  • a second light source L2 is provided on the main body 10 for emitting visible light.
  • the projection state of the beam emitter A1 includes projecting infrared light. a first projection state and a second projection state for projecting visible light;
  • the power supply assembly 100 is provided on the main body 10 and connected to the first light source L1 and the second light source L2;
  • Touch sensor 300 is provided on the main body 10;
  • the control module 200 is disposed on the main body 10 and is respectively connected to the power component 100, the touch sensor 300, the first light source L1 and the second light source L2.
  • the control module 200 is used to control the Different states of the touch sensor 300 control the projection state of the beam emitter A1 to switch between the first projection state and the second projection state;
  • FIG. 8 is a schematic diagram of remote interaction
  • Figure 10 is a schematic diagram of near-end interaction.
  • the optical touch display panel A2 includes a display function part A21, a photosensitive circuit and a control unit A22;
  • the photosensitive circuit includes A plurality of photosensitive units SD, the plurality of photosensitive units SD are arranged at intervals on the display function part A21, and the display function part A21 and the photosensitive circuit are respectively connected to the control unit A22;
  • the photosensitive circuit is used to sense the light projected by the beam emitter A1 and send a sensing signal to the control unit A22.
  • the control unit A22 is used to control the display function part A21 to display the display according to the sensing signal. The position where the beam emitter A1 projects the light.
  • the structure of the beam emitter A1 is the same as the structure and arrangement of the above embodiment, and will not be described again here.
  • the light sensing of the photosensitive circuit is realized by a plurality of photosensitive units SD provided on the display function part A21.
  • the light touch display panel A2 can be a light sensing function integrated display panel, including a display function part A21, a photosensitive circuit and a control unit A22.
  • the photosensitive circuit mainly consists of a Sense TFT (photosensitive thin film transistor) and a Switch TFT (switch TFT). Thin film transistor) and subsequent readout circuit (Readout) and control unit A22.
  • Sense TFT photosensitive thin film transistor
  • Switch TFT switch TFT
  • Readout Readout circuit
  • the photosensitive circuit includes a photosensitive thin film transistor, a switching thin film transistor and a first capacitor Cst (storage capacitor).
  • the gate of the photosensitive thin film transistor is connected to the first control signal line SVGG
  • the source of the photosensitive thin film transistor is connected to the first power line SVDD
  • the drain of the photosensitive thin film transistor is connected to the source of the switching thin film transistor.
  • the first capacitor Cst includes a first plate and a second plate. The first plate is connected to the drain of the photosensitive thin film transistor and the source of the switching thin film transistor.
  • the second plate is connected to the drain of the photosensitive thin film transistor and the source of the switching thin film transistor.
  • the common voltage signal line Vcom is connected.
  • the photosensitive circuit also includes a readout circuit, the drain of the switching thin film transistor is connected to the readout circuit, and the gate of the switching thin film transistor is connected to the second control signal line Gate.
  • the readout circuit includes an operational amplifier, a second capacitor Cint, and a switch.
  • the operational amplifier includes an inverting input terminal, a non-inverting input terminal, and an output terminal (the “-” marked in the operational amplifier in Figure 11 indicates the inverting input terminal, "+” represents a non-inverting input terminal), the non-inverting input terminal is connected to the comparison voltage Vref, and the inverting input terminal is connected to the drain of the switching thin film transistor.
  • the second capacitor Cint and the switch are both connected in parallel with the operational amplifier FD, and one end of the second capacitor Cint and one end of the switch are both connected to the inverting input end of the operational amplifier.
  • the other ends of the two capacitors Cint and the other ends of the switch are both connected to the output end of the operational amplifier.
  • the output end of the operational amplifier is also connected to a readout line Readout, and the readout line Readout is used to output light sensing signals.
  • the light projected by the beam emitter A1 irradiates the optical touch display panel A2, and the light projected by the beam emitter A1 covers at least four of the Photosensitive unit SD.
  • the spot size of the light projected by the beam emitter A1 on the optical touch display panel A2 is larger than the size of the photosensitive unit SD, and at any time, the light projected by the beam emitter A1 covers at least four of the photosensitive units. SD.
  • the light beam projected by the beam emitter A1 is set to cover at least four photosensitive units SD. Through the four photosensitive units SD, the corresponding light beam projected by the beam emitter A1 can be accurately calculated.
  • the light projected by the beam emitter A1 is set to cover at least four of the photosensitive units SD.
  • the center of gravity algorithm can be used to simulate the projected light of the beam projector. the exact location.
  • this application includes a main body 10, a first light source L1 and a second light source L2 provided on the main body 10, a power supply component 100 connected to the first light source L1 and the second light source L2, and a touch sensor by setting the beam emitter A1.
  • 300 and the control module 200 The projection state of the beam emitter A1 includes a first projection state of projecting infrared light and a second projection state of projecting visible light.
  • the control module 200 is used to control the beam according to different states of the touch sensor 300.
  • the projection state of the emitter A1 is switched between the first projection state and the second projection state.
  • This setting method enables the beam emitter A1 to take into account the two usage modes of long-range interaction and short-range interaction, and can be used according to the actual situation. Automatically switch the projection state according to usage requirements, making the user experience better.

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Abstract

一种光束发射器（A1）及光触控显示系统，光束发射器（A1）包括第一光源（L1）、第二光源（L2）、电源组件（100）、触控传感器（300）和控制模块（200），光束发射器（A1）包括第一投射状态和第二投射状态，控制模块（200）分别与电源组件（100）、触控传感器（300）、第一光源（L1）和第二光源（L2）连接，控制模块（200）根据触控传感器（300）的不同状态控制光束发射器（A1）在第一投射状态和第二投射状态之间切换。

Description

光束发射器及光触控显示系统 技术领域
本申请涉及显示领域，尤其涉及一种光束发射器及光触控显示系统。
 背景技术
显示技术被广泛应用于社会各种领域，人们对可交互式显示技术的需求日渐增加。触控式显示技术已经被广泛商业应用，但其存在无法远程交互的问题。一种远程交互技术为通过摄像头进行动作捕捉分析可以实现远程交互，然而其识别的精准度较低，会造成响应不灵敏、误操作等严重影响用户体验的现象，另一种远程交互技术为“空中鼠标”，“空中鼠标”只能识别相对位置，无法直观地反馈绝对位置坐标。
近端交互通常采用电容式显示面板进行触控交互，因此该结构无法进行远程交互，亟需一种能够将远程交互和近端交互进行结合的触控显示系统。
 技术问题
本申请实施例提供一种光束发射器及光触控显示系统，以解决人们对可交互式显示技术的需求日渐增加，触控式显示技术已经被广泛商业应用，但其存在无法进行远程交互，亟需一种能够将远程交互和近端交互进行结合的触控显示系统的技术问题。
 技术解决方案
为解决上述问题，本申请提供的技术方案如下：
本申请实施例提供了一种光束发射器，包括：
主体，所述主体上设置有投射部；
设置于所述主体上用于发射红外光的第一光源，以及设置于所述主体上用于发射可见光的第二光源，所述光束发射器的投射状态包括所述投射部投射红外光的第一投射状态和所述投射部投射可见光的第二投射状态；
电源组件，设置于所述主体上，连接所述第一光源和所述第二光源；
触控传感器，设置于所述主体上；
控制模块，设置于所述主体上，分别与所述电源组件、所述触控传感器、所述第一光源和所述第二光源连接，所述控制模块用于根据所述触控传感器的状态控制所述光束发射器在所述第一投射状态和所述第二投射状态之间切换。
在一实施例中，所述触控传感器包括响应状态和非响应状态，当所述触控传感器为响应状态时，所述控制模块控制所述光束发射器为所述第一投射状态，当所述触控传感器为非响应状态时，所述控制模块控制所述光束发射器为所述第二投射状态。
在一实施例中，所述第一光源包括第一控制开关，所述第二光源包括第二控制开关，所述第一控制开关和所述第二控制开关均与所述控制模块连接。
在一实施例中，所述主体包括容纳部，所述投射部包括第一投射部和第二投射部，所述第一投射部和所述第二投射部均与所述容纳部连通；
所述第一光源设置于所述容纳部内，所述第一光源发射的红外光经所述第一投射部投射，所述第二光源设置于所述容纳部内，所述第二光源发射的可见光经所述第二投射部投射，所述触控传感器设置于所述第一投射部的投射端口处。
在一实施例中，所述触控传感器包括压感传感器，所述压感传感器环绕所述第一投射部的投射端口设置。
在一实施例中，所述第一投射部和所述第二投射部分别设置于所述容纳部的两端，所述第一投射部的投射端口和所述第二投射部的投射端口相背设置。
在一实施例中，所述光束发射器投射的可见光和所述红外光均包括至少两个不同的偏振方向。
在一实施例中，所述光束发射器还包括用于发射辅助光线的第三光源，以及设置于所述投射部的投射端口处的集束结构，所述第一光源发射的红外光、以及所述第二光源发射的可见光均与所述辅助光线平行，所述第三光源的出光侧设置有二分之一波片；
所述第一光源发射的红外光与所述第三光源发射的辅助光经所述集束结构呈线偏振光状态投射；和/或
所述第二光源发射的可见光与所述第三光源发射的辅助光经所述集束结构呈线偏振光状态投射。
在一实施例中，所述光束发射器还包括设置于所述投射部的投射端口处的四分之一波片，所述第一光源发射的红外光和/或所述第二光源发射的可见光经所述四分之一波片呈圆偏振光状态投射。
本申请还提供一种光触控显示系统，包括：
光束发射器，包括：
主体，所述主体上设置有投射部；
设置于所述主体上用于发射红外光的第一光源，以及设置于所述主体上用于发射可见光的第二光源，所述光束发射器的投射状态包括所述投射部投射红外光的第一投射状态和所述投射部投射可见光的第二投射状态；
电源组件，设置于所述主体上，连接所述第一光源和所述第二光源；
触控传感器，设置于所述主体上；
控制模块，设置于所述主体上，分别与所述电源组件、所述触控传感器、所述第一光源和所述第二光源连接，所述控制模块用于根据所述触控传感器的不同状态控制所述光束发射器的投射状态在所述第一投射状态和所述第二投射状态之间切换；
光触控显示面板，包括显示功能部、感光电路和控制单元；所述感光电路包括多个感光单元，多个所述感光单元间隔设置于所述显示功能部上，所述显示功能部和所述感光电路分别与所述控制单元连接；
其中，所述感光电路用于感应所述光束发射器投射的光线并向所述控制单元发送感应信号，所述控制单元用于根据所述感应信号控制所述显示功能部显示所述光束发射器投射光线的位置。
在一实施例中，所述光束发射器投射出的光线照射在所述光触控显示面板上，所述光束发射器投射出的光线至少覆盖四个所述感光单元。
在一实施例中，所述触控传感器包括响应状态和非响应状态，当所述触控传感器为响应状态时，所述控制模块控制所述光束发射器为所述第一投射状态，当所述触控传感器为非响应状态时，所述控制模块控制所述光束发射器为所述第二投射状态。
在一实施例中，所述第一光源包括第一控制开关，所述第二光源包括第二控制开关，所述第一控制开关和所述第二控制开关均与所述控制模块连接。
在一实施例中，所述主体包括容纳部，所述投射部包括第一投射部和第二投射部，所述第一投射部和所述第二投射部均与所述容纳部连通；
所述第一光源设置于所述容纳部内，所述第一光源发射的红外光经所述第一投射部投射，所述第二光源设置于所述容纳部内，所述第二光源发射的可见光经所述第二投射部投射，所述触控传感器设置于所述第一投射部的投射端口处。
在一实施例中，所述触控传感器包括压感传感器，所述压感传感器环绕所述第一投射部的投射端口设置。
在一实施例中，所述第一投射部和所述第二投射部分别设置于所述容纳部的两端，所述第一投射部的投射端口和所述第二投射部的投射端口相背设置。
在一实施例中，所述光束发射器投射的可见光和所述红外光均包括至少两个不同的偏振方向。
在一实施例中，所述光束发射器还包括用于发射辅助光线的第三光源，以及设置于所述投射部的投射端口处的集束结构，所述第一光源发射的红外光、以及所述第二光源发射的可见光均与所述辅助光线平行，所述第三光源的出光侧设置有二分之一波片；
所述第一光源发射的红外光与所述第三光源发射的辅助光经所述集束结构呈线偏振光状态投射；和/或
所述第二光源发射的可见光与所述第三光源发射的辅助光经所述集束结构呈线偏振光状态投射。
在一实施例中，所述集束结构包括凸透镜。
在一实施例中，所述光束发射器还包括设置于所述投射部的投射端口处的四分之一波片，所述第一光源发射的红外光和/或所述第二光源发射的可见光经所述四分之一波片呈圆偏振光状态投射。
 有益效果
本申请通过设置光束发射器包括主体、设置于所述主体的第一光源和第二光源、连接第一光源和第二光源的电源组件、触控传感器和控制模块，光束发射器的投射状态包括投射红外光的第一投射状态和投射可见光的第二投射状态，控制模块用于根据所述触控传感器的不同状态控制所述光束发射器的投射状态在所述第一投射状态和所述第二投射状态之间切换，该设置方式使得光束发射器能够兼顾远程交互和近程交互两种使用模式，且能够根据实际的使用需求自动切换投射状态，使得用户体验更佳。
 附图说明
图1是本申请实施例提供的光束发射器的结构示意图；
图2是本申请实施例提供的光束发射器的控制模块的连接示意图；
图3是本申请实施例提供的另一种光束发射器的结构示意图；
图4是本申请实施例提供的另一种光束发射器的结构示意图；
图5是本申请实施例提供的一种光束发射器投射线偏振光的示意图；
图6是本申请实施例提供的一种光束发射器投射线偏振光的示意图；
图7是本申请实施例提供的一种光触控显示系统远程交互模式示意图；
图8是本申请实施例提供的一种光触控显示系统远程交互示意图；
图9是本申请实施例提供的一种光触控显示系统近程交互模式示意图；
图10是本申请实施例提供的一种光触控显示系统近程交互示意图；
图11是本申请实施例提供的一种光触控显示面板的感光电路架构图；
图12是本申请实施例提供的一种光触控显示系统交互模式示意图。
 本发明的实施方式
本申请提供一种光束发射器及光触控显示系统，为使本申请的目的、技术方案及效果更加清楚、明确，以下参照附图并举实施例对本申请进一步详细说明。应当理解，此处所描述的具体实施例仅用以解释本申请，并不用于限定本申请。
本申请实施例提供一种光束发射器及光触控显示系统。以下分别进行详细说明。需说明的是，以下实施例的描述顺序不作为对实施例优选顺序的限定。
本申请实施例提供一种光束发射器A1，具体参见图1-图6包括：
主体10，所述主体10上设置有投射部20；
设置于所述主体10上用于发射红外光的第一光源L1，以及设置于所述主体10上用于发射可见光的第二光源L2，所述光束发射器A1的投射状态包括所述投射部20投射红外光的第一投射状态和所述投射部20投射可见光的第二投射状态；
电源组件100，设置于所述主体10上，连接所述第一光源L1和所述第二光源L2；
触控传感器300，设置于所述主体10上；
控制模块200，设置于所述主体10上，分别与所述电源组件100、所述触控传感器300、所述第一光源L1和所述第二光源L2连接，所述控制模块200用于根据所述触控传感器300的不同状态控制所述光束发射器A1的投射状态在所述第一投射状态和所述第二投射状态之间切换。
具体地，所述光束发射器A1包括主体10，所述主体10包括外壳和外壳内的容纳部，所述容纳部用于设置第一光源L1、第二光源L2、电源组件100以及控制模块200，所述触控传感器300可以设置于所述容纳部，也可以设置于所述投射部20上；
具体地，所述第一光源L1用于发射红外光，其波长可以为980nm、808nm、850nm中的一种；
具体地，所述第二光源L2用于发射可见光，所述可见光可以为红光、橙光、黄光、绿光、蓝光、青光、紫光或其他颜色光中的一种；可见光的种类和波长以及不可见光的种类和波长可以根据实际情况中触控显示面板A2上的感光单元SD的敏感区段进行设计，优选为红光。
具体地，如图2所示，所述控制模块200连接所述电源组件100、触控传感器300、第一光源L1和第二光源L2连接，所述电源组件100用于给所述控制模块200、触控传感器300、第一光源L1和第二光源L2供电，控制模块200控制第一光源L1和第二光源L2的工作状态，具体为根据触控传感器300的状态调整第一光源L1和第二光源L2的工作状态。
具体地，所述触控传感器300包括响应状态和非响应状态，控制模块200根据所述触控传感器300的状态，调整光束发射器A1的投射状态，即是投射红外光还是投射可见光，投射红外光为近端交互模式，投射可见光为远程交互模式。
具体地，所述触控传感器300可以包括距离感应传感器，其中，所述触控传感器300既可以设置于所述容纳部，也可以设置于所述投射部20内。在一具体实例中，具体可以为超声波接近开关，通过合理设置超声波接近开关的感应距离，使得光束发射器A1靠近触控显示面板A2时，超声波接近开关处于响应状态，控制模块200控制所述第一光源L1处于发射红外光的状态，第二光源L2关闭，实现近端交互，当超声波接近开关在感应距离外时，超声波接近开关处于非响应状态，控制模块200控制所述第二光源L2处于发射可见光的状态，第一光源L1关闭，实现远程交互。
具体地，如图3所示，所述触控传感器300可以包括压感传感器，在一具体实施例中，具体可以为伸缩式压感传感器、电容式压感传感器、压电式压感传感器中的一种，优选的，如图3，所述触控传感器300设于所述投射部20上。当光束发射器A1的压感传感器与触控显示面板A2接触并发生挤压操作，压感传感器处于响应状态，控制模块200控制所述第一光源L1处于发射红外光的状态，第二光源L2关闭，实现近端交互，当压感传感器远离触控显示面板A2处于悬空状态时，压感传感器处于非响应状态，控制模块200控制所述第二光源L2处于发射可见光的状态，第一光源L1关闭，实现远程交互。
可以理解的是，本实施例通过设置光束发射器A1包括主体10、设置于所述主体10的第一光源L1和第二光源L2、连接第一光源L1和第二光源L2的电源组件100、触控传感器300和控制模块200，光束发射器A1的投射状态包括投射红外光的第一投射状态和投射可见光的第二投射状态，控制模块200用于根据所述触控传感器300的不同状态控制所述光束发射器A1的投射状态在所述第一投射状态和所述第二投射状态之间切换，该设置方式使得光束发射器A1能够兼顾远程交互和近程交互两种使用模式，且能够根据实际的使用需求自动切换投射状态，使得用户体验更佳。
在一实施例中，所述触控传感器300包括响应状态和非响应状态，当所述触控传感器300为响应状态时，所述控制模块200控制所述光束发射器A1为所述第一投射状态，当所述触控传感器300为非响应状态时，所述控制模块200控制所述光束发射器A1为所述第二投射状态。
具体地，所述触控传感器300的响应状态和非响应状态根据具体触控传感器300的类型而定，例如，当触控传感器300为压感传感器时，所述响应状态为压感传感器受到挤压（当压感传感器为电容式传感器时，为挤压导致传感器的电容发生变化），产生电流信号，该状态为响应状态；非响应状态为压感传感器未受到挤压，不产生电流信号；当触控传感器300未距离传感器时，距离传感器具有一预设的距离值，当靠近障碍物时，传感器接收到返回的超声波，进而产生电流信号，该状态为响应状态；非响应状态为距离传感器与障碍物之间的距离大于预设距离值，未接收到返回的超声波，不产生电流信号；
需要说明的是，光触控显示系统的近程交互和远程交互之间的差别在于，远程交互可以理解为远程进行标识，近程交互可以理解为书写模式。
可以理解的是，通过采用合理的触控传感器300，使得光束发射器A1能够根据用户的实际需要自动切换使用状态，提高用户的体验度，由于激光反射进入人眼容易对人眼造成伤害，将近端交互设置为采用红外光进行能够降低光束发射器A1发射的激光对人眼的伤害。
在一实施例中，如图2所示，所述第一光源L1包括第一控制开关C1，所述第二光源L2包括第二控制开关C2，所述第一控制开关C1和所述第二控制开关C2均与所述控制模块200连接。
具体地，所述第一光源L1包括第一控制开关C1和连接第一控制开关C1的第一发光体，第一发光体包括钨灯、氢灯、氚灯中的一种。
具体地，所述第二光源L2包括第二控制开关C2和连接第二控制开关C2的第二发光体，第二发光体包括氘灯。具体地，所述第一控制开关C1可以采用人工控制开启或关闭，且也可以通过控制模块200进行开启或关闭。
具体地，所述第二控制开关C2可以采用人工控制开启或关闭，且也可以通过控制模块200进行开启或关闭。可以理解的是，第一光源L1和第二光源L2的开启或关闭可以根据用户的实际需要进行人工控制，使得用户在仅需要采用单一交互方式时，防止因误操作导致光源误切换，进一步提升用户体验度，也能够节约电源组件100的电量，提升光束传感器的节能性能。
在一实施例中，如图3和图4所示，所述主体10包括容纳部，所述投射部20包括第一投射部201和第二投射部202，所述第一投射部201和所述第二投射部202均与所述容纳部连通；
所述第一光源L1设置于所述容纳部内，所述第一光源L1发射的红外光经所述第一投射部201投射，所述第二光源L2设置于所述容纳部内，所述第二光源L2发射的可见光经所述第二投射部202投射，所述触控传感器300设置于所述第一投射部201的投射端口处。
具体地，第一投射部201和第二投射部202可以设置在容纳部的同一侧，第一投射部201和第二投射部202可以设置在容纳部的首尾两侧；
在一具体的实例中，所述第一投射部201和所述第二投射部202具体均可以为环状结构，第一光源L1发出的红外光穿过第一投射部201环状结构的中空区域后进行投射，第二光源L2发出的可见光穿过第二投射部202环状结构的中空区域后进行投射。
需要说明的是，由于第一投射部201是用于近端交互，即用于作为手写笔使用，因此，可以将触控传感器300设置在用于近端交互的第一投射部201的投射端口处，触控传感器300采用压感传感器，通过书写产生的压力，触控传感器300在响应状态和非响应状态之间切换，通过控制模块200控制光束发射器A1在近端交互模式与远程交互模式之间进行切换；在此设置方式下，第一投射部201和第二投射部202可以设置在容纳部的同一侧；与此同时，压感传感器也可以采集光束发射器A1近端交互时的书写力度，通过光触控显示系统进行数据的分析处理反馈至光触控显示面板A2上，显示书写时的深度信息，进而可以显示出写字时的笔锋，能够进一步提升用户体验度。
需要说明的是，第一投射部201和第二投射部202可以位于所述容纳部的首尾两端，为了避免光束发射器A1切换不同的状态，导致远程交互的可见光刺激用户的眼睛，在该结构下，可以将用于远程交互的第二光源L2的第二控制开关C2手动关闭，在此状态下，用于近端交互的第一光源L1的状态在开启与关闭之间进行切换，在不进行书写时能够及时断开发射红外光的第一光源L1的电源，降低光束发射器A1的能耗。
需要说明的是，通过压感传感器的感应，进而在触控显示面板A2上显示触控深度的技术方案可以为：所述压感传感器产生压感电信号，光束发射器A1内置的无线信号发射模块将压感电信号进行发射，触控显示面板A2内置的无线信号接收模块接收所述压感电信号，并传输至控制单元A22，控制单元A22可以包括中心处理模块和数字信号处理模块，数字信号处理模块将压感电信号转化为压感数字信号，压感数字信号经中心处理模块分析并在光触控显示面板A2上显示，根据接收到的压感电信号的强弱，在对应位置显示不同的触控深度，例如，在一实例中，所述控制单元A22可以为系统级芯片(System on Chip，SOC)，通过光触控显示系统中设置SOC，实现近端交互时，光触控显示系统上能够显示书写的深度信息。
可以理解的是，通过将触控传感器300设置在近端交互的第一投射部201的投射端口处，能够将远程交互和近端交互切换的触控传感器300与用于书写显示深度的压感传感器合二为一，即通过一个压感传感器就能够实现两种功能，降低了生产成本，且使得光束发射器A1结构更为精简。
在一实施例中，如图4所示，所述触控传感器300包括压感传感器，所述压感传感器环绕所述第一投射部201的投射端口设置。
具体地，所述压感传感器环绕第一投射部201的投射端口设置，使得穿过第一投射部201的红外光的周围均设置压感传感器，使得用户可以采用任意握笔方式或者倾斜角度，均能够使灵敏的检测书写的力度，使得深度检测（即书写的笔锋）显示更为精准。
可以理解的是，通过设置压感传感器环绕所述第一投射部201的投射端口设置，能够提高压感传感器检测书写力度的精确度，相较于图3所示的伸缩式压感传感器，能够避免采用程序对笔尖实际书写位置和红外光实际照射点之间的偏差进行校正，提升近端交互即书写位置的精准度，提升用户体验。
在一实施例中，如图3和图4所示，所述第一投射部201和所述第二投射部202分别设置于所述容纳部的两端，所述第一投射部201的投射端口和所述第二投射部202的投射端口相背设置。
可以理解的是，通过上述设置方式使得光束发射器A1的结构更为合理，直径更细，在不影响实际使用的情况下，使得用户近端交互（即书写）时，手握感更佳，提升用户体验度。
在一实施例中，如图5和图6所示，所述光束发射器A1投射的可见光和所述红外光均包括至少两个不同的偏振方向。
需要说明的是，触控显示面板A2外层为偏光膜，当集成的感光单元SD位于显示面板的内部时，光束发射器A1发射的激光（可见光和红外光）首先落到偏光膜上，穿透后才达到内部的传感器。当激光的偏振角度与偏光膜的角度呈正交时，激光无法透过偏光膜，感光单元SD无法获得对应的激光信息，造成无法识别的问题，为解决上述问题，提供了本实施例的技术方案。
可以理解的是，通过对光束发射器A1投射的光线进行线偏处理，使得投射的光线（可见光以及红外光）具有至少两个不同的偏振方向时，可以保证投射光线从任意角度射入触控显示面板A2上时都有部分光束可以透过偏光膜到达触控显示面板A2上的感光单元SD上，从而防止触控显示面板A2上只有少数区域的感光器件可接收光信号甚至所有感光器件接收不到光信号，提升显示面板的定位准确性及灵敏度。
在一实施例中，所述光束发射器A1还包括用于发射辅助光线的第三光源L3，以及设置于所述投射部20的投射端口处的集束结构60，所述第一光源L1发射的红外光、以及所述第二光源L2发射的可见光均与所述辅助光线平行，所述第三光源L3的出光侧设置有二分之一波片50；
所述第一光源L1发射的红外光与所述第三光源L3发射的辅助光经所述集束结构60呈线偏振光状态投射；和/或
所述第二光源L2发射的可见光与所述第三光源L3发射的辅助光经所述集束结构60呈线偏振光状态投射。
具体地，所述第三光源L3发射的辅助光可以为红外光也可以为可见光，具体根据实际需要进行调整。
具体地，集束结构60可以为集束透镜，如凸透镜，两束光线（辅助光和红外光/可见光）经过集束结构60后汇聚成一束光束，从而可以在光束发射器A1发射的光束的直径不变的前提下，增强光束发射器A1发射的投射光线的光强，使得投射光线具有更强的穿透性，以便于触控显示面板A2上的感光单元SD感应到投射光线。
可以理解的是，通过对光束发射器A1投射的光线进行线偏处理，可以提升显示面板的定位准确性及灵敏度。
在一实施例中，所述光束发射器A1还包括设置于所述投射部20的投射端口处的四分之一波片70，所述第一光源L1发射的红外光和/或所述第二光源L2发射的可见光经所述四分之一波片70呈圆偏振光状态投射。
具体地，如图6所示，图6以第一光源L1为例进行结构示意，当然该光源也可以替换为第二光源L2，所述四分之一波片70可以嵌设在环形的第一投射部201以及环形的第二投射部202的中空位置。
可以理解的是，通过对光束发射器A1投射的光线进行线偏处理，可以提升显示面板的定位准确性及灵敏度。
本申请还提供一种光触控显示系统，如图7、图8、图9和图10所示，包括：
光束发射器A1，如图1所示，包括：
主体10，所述主体10上设置有投射部20；
设置于所述主体10上用于发射红外光的第一光源L1，以及设置于所述主体10上用于发射可见光的第二光源L2，所述光束发射器A1的投射状态包括投射红外光的第一投射状态和投射可见光的第二投射状态；
电源组件100，设置于所述主体10上，连接所述第一光源L1和所述第二光源L2；
触控传感器300，设置于所述主体10上；
控制模块200，设置于所述主体10上，分别与所述电源组件100、所述触控传感器300、所述第一光源L1和所述第二光源L2连接，所述控制模块200用于根据所述触控传感器300的不同状态控制所述光束发射器A1的投射状态在所述第一投射状态和所述第二投射状态之间切换；
如图8和图10所示，图8为远程交互的示意图，图10为近端交互的示意图，光触控显示面板A2包括显示功能部A21、感光电路和控制单元A22；所述感光电路包括多个感光单元SD，多个所述感光单元SD间隔设置于所述显示功能部A21上，所述显示功能部A21和所述感光电路分别与所述控制单元A22连接；
其中，所述感光电路用于感应所述光束发射器A1投射的光线并向所述控制单元A22发送感应信号，所述控制单元A22用于根据所述感应信号控制所述显示功能部A21显示所述光束发射器A1投射光线的位置。
具体地，所述光束发射器A1的结构如上述实施例的结构和设置方式，此处不作赘述。
具体地，感光电路的感光通过多个设置于显示功能部A21上的感光单元SD实现。
具体地，光触控显示面板A2具体可以为光感功能集成显示面板，包括显示功能部A21、感光电路和控制单元A22，其中，感光电路主要由Sense TFT（光敏薄膜晶体管）和Switch TFT（开关薄膜晶体管）以及后续的读出电路（Readout）和控制单元A22组成。Switch TFT在源极和漏极导通时，Sensing TFT感光后产生的光电流可以被读出和处理，架构图如图11所示。
图11中，感光电路包括光敏薄膜晶体管、开关薄膜晶体管和第一电容Cst（存储电容）。所述光敏薄膜晶体管的栅极与第一控制信号线SVGG连接，所述光敏薄膜晶体管的源极与第一电源线SVDD连接，所述光敏薄膜晶体管的漏极与开关薄膜晶体管的源极连接。所述第一电容Cst包括第一极板和第二极板，所述第一极板与所述光敏薄膜晶体管的漏极和所述开关薄膜晶体管的源极连接，所述第二极板与公共电压信号线Vcom连接。
感光电路还包括读出电路，开关薄膜晶体管的漏极与所述读出电路连接，开关薄膜晶体管的栅极与第二控制信号线Gate连接。
所述读出电路包括运算放大器、第二电容Cint、开关，所述运算放大器包括反相输入端、同相输入端以及输出端(如图11中的运算放大器中标示的“-”表示反相输入端，“ +”表示同相输入端)，所述同相输入端连接比较电压Vref，所述反相输入端连接开关薄膜晶体管的漏极。所述第二电容Cint和所述开关均与所述运算放大器FD并联连接，所述第二电容Cint的一端和所述开关的一端均与所述运算放大器的反相输入端连接，所述第二电容Cint的另一端和所述开关的另一端均与所述运算放大器的输出端连接。所述运算放大器的输出端还连接读出线Readout，所述读出线Readout用于输出光感信号。
可以理解的是，通过设置光束发射器A1结合光触控显示面板A2形成光触控显示系统，能够兼顾远程交互和近程交互两种使用模式，且能够根据实际的使用需求自动切换投射状态，使得用户体验更佳。
在一实施例中，如图12所示，所述光束发射器A1投射出的光线照射在所述光触控显示面板A2上，所述光束发射器A1投射出的光线至少覆盖四个所述感光单元SD。
具体地，光束发射器A1投射出的光线照至光触控显示面板A2上的光斑尺寸大于感光单元SD的尺寸，且任意时刻，光束发射器A1投射出的光线至少覆盖四个所述感光单元SD。
需要说明的是，设置所述光束发射器A1投射出的光线至少覆盖四个所述感光单元SD，通过四个所述感光单元SD，能够精确的计算所述光束发射器A1投射出的光线对应的显示面板的具体坐标，例如（X，Y），当所述光束发射器A1投射出的光线只覆盖两个所述感光单元SD时，仅能计算所述光束发射器A1投射出的光线对应的显示面板的单个方向的位置。
可以理解的是，设置光束发射器A1投射出的光线至少覆盖四个所述感光单元SD，能够基于不同位置的感光单元SD接收的光强度不同，使用重心算法能够模拟出光束投射器的投射光线的准确位置。
综上，本申请通过设置光束发射器A1包括主体10、设置于所述主体10的第一光源L1和第二光源L2、连接第一光源L1和第二光源L2的电源组件100、触控传感器300和控制模块200，光束发射器A1的投射状态包括投射红外光的第一投射状态和投射可见光的第二投射状态，控制模块200用于根据所述触控传感器300的不同状态控制所述光束发射器A1的投射状态在所述第一投射状态和所述第二投射状态之间切换，该设置方式使得光束发射器A1能够兼顾远程交互和近程交互两种使用模式，且能够根据实际的使用需求自动切换投射状态，使得用户体验更佳。
以上对本申请实施例所提供的一种光束发射器及光触控显示系统进行了详细介绍，本文中应用了具体个例对本申请的原理及实施方式进行了阐述，以上实施例的说明只是用于帮助理解本申请的方法及其核心思想；同时，对于本领域的技术人员，依据本申请的思想，在具体实施方式及应用范围上均会有改变之处，综上所述，本说明书内容不应理解为对本申请的限制。

Claims (20)

  1. 一种光束发射器，其中，包括：
    主体，所述主体上设置有投射部；
    设置于所述主体上用于发射红外光的第一光源，以及设置于所述主体上用于发射可见光的第二光源，所述光束发射器的投射状态包括所述投射部投射红外光的第一投射状态和所述投射部投射可见光的第二投射状态；
    电源组件，设置于所述主体上，连接所述第一光源和所述第二光源；
    触控传感器，设置于所述主体上；
    控制模块，设置于所述主体上，分别与所述电源组件、所述触控传感器、所述第一光源和所述第二光源连接，所述控制模块用于根据所述触控传感器的状态控制所述光束发射器在所述第一投射状态和所述第二投射状态之间切换。
  2. 如权利要求1所述的光束发射器，其中，所述触控传感器包括响应状态和非响应状态，当所述触控传感器为响应状态时，所述控制模块控制所述光束发射器为所述第一投射状态，当所述触控传感器为非响应状态时，所述控制模块控制所述光束发射器为所述第二投射状态。
  3. 如权利要求2所述的光束发射器，其中，所述第一光源包括第一控制开关，所述第二光源包括第二控制开关，所述第一控制开关和所述第二控制开关均与所述控制模块连接。
  4. 如权利要求3所述的光束发射器，其中，所述主体包括容纳部，所述投射部包括第一投射部和第二投射部，所述第一投射部和所述第二投射部均与所述容纳部连通；
    所述第一光源设置于所述容纳部内，所述第一光源发射的红外光经所述第一投射部投射，所述第二光源设置于所述容纳部内，所述第二光源发射的可见光经所述第二投射部投射，所述触控传感器设置于所述第一投射部的投射端口处。
  5. 如权利要求4所述的光束发射器，其中，所述触控传感器包括压感传感器，所述压感传感器环绕所述第一投射部的投射端口设置。
  6. 如权利要求4所述的光束发射器，其中，所述第一投射部和所述第二投射部分别设置于所述容纳部的两端，所述第一投射部的投射端口和所述第二投射部的投射端口相背设置。
  7. 如权利要求1所述的光束发射器，其中，所述光束发射器投射的可见光和所述红外光均包括至少两个不同的偏振方向。
  8. 如权利要求7所述的光束发射器，其中，所述光束发射器还包括用于发射辅助光线的第三光源，以及设置于所述投射部的投射端口处的集束结构，所述第一光源发射的红外光、以及所述第二光源发射的可见光均与所述辅助光线平行，所述第三光源的出光侧设置有二分之一波片；
    所述第一光源发射的红外光与所述第三光源发射的辅助光经所述集束结构呈线偏振光状态投射；和/或
    所述第二光源发射的可见光与所述第三光源发射的辅助光经所述集束结构呈线偏振光状态投射。
  9. 如权利要求7所述的光束发射器，其中，所述光束发射器还包括设置于所述投射部的投射端口处的四分之一波片，所述第一光源发射的红外光和/或所述第二光源发射的可见光经所述四分之一波片呈圆偏振光状态投射。
  10. 一种光触控显示系统，其中，包括：
    光束发射器，包括：
    主体，所述主体上设置有投射部；
    设置于所述主体上用于发射红外光的第一光源，以及设置于所述主体上用于发射可见光的第二光源，所述光束发射器的投射状态包括所述投射部投射红外光的第一投射状态和所述投射部投射可见光的第二投射状态；
    电源组件，设置于所述主体上，连接所述第一光源和所述第二光源；
    触控传感器，设置于所述主体上；
    控制模块，设置于所述主体上，分别与所述电源组件、所述触控传感器、所述第一光源和所述第二光源连接，所述控制模块用于根据所述触控传感器的不同状态控制所述光束发射器的投射状态在所述第一投射状态和所述第二投射状态之间切换；
    光触控显示面板，包括显示功能部、感光电路和控制单元；所述感光电路包括多个感光单元，多个所述感光单元间隔设置于所述显示功能部上，所述显示功能部和所述感光电路分别与所述控制单元连接；
    其中，所述感光电路用于感应所述光束发射器投射的光线并向所述控制单元发送感应信号，所述控制单元用于根据所述感应信号控制所述显示功能部显示所述光束发射器投射光线的位置。
  11. 如权利要求10所述的光触控显示系统，其中，所述光束发射器投射出的光线照射在所述光触控显示面板上，所述光束发射器投射出的光线至少覆盖四个所述感光单元。
  12. 如权利要求10所述的光触控显示系统，其中，所述触控传感器包括响应状态和非响应状态，当所述触控传感器为响应状态时，所述控制模块控制所述光束发射器为所述第一投射状态，当所述触控传感器为非响应状态时，所述控制模块控制所述光束发射器为所述第二投射状态。
  13. 如权利要求12所述的光触控显示系统，其中，所述第一光源包括第一控制开关，所述第二光源包括第二控制开关，所述第一控制开关和所述第二控制开关均与所述控制模块连接。
  14. 如权利要求13所述的光触控显示系统，其中，所述主体包括容纳部，所述投射部包括第一投射部和第二投射部，所述第一投射部和所述第二投射部均与所述容纳部连通；
    所述第一光源设置于所述容纳部内，所述第一光源发射的红外光经所述第一投射部投射，所述第二光源设置于所述容纳部内，所述第二光源发射的可见光经所述第二投射部投射，所述触控传感器设置于所述第一投射部的投射端口处。
  15. 如权利要求14所述的光触控显示系统，其中，所述触控传感器包括压感传感器，所述压感传感器环绕所述第一投射部的投射端口设置。
  16. 如权利要求14所述的光触控显示系统，其中，所述第一投射部和所述第二投射部分别设置于所述容纳部的两端，所述第一投射部的投射端口和所述第二投射部的投射端口相背设置。
  17. 如权利要求10所述的光触控显示系统，其中，所述光束发射器投射的可见光和所述红外光均包括至少两个不同的偏振方向。
  18. 如权利要求17所述的光触控显示系统，其中，所述光束发射器还包括用于发射辅助光线的第三光源，以及设置于所述投射部的投射端口处的集束结构，所述第一光源发射的红外光、以及所述第二光源发射的可见光均与所述辅助光线平行，所述第三光源的出光侧设置有二分之一波片；
    所述第一光源发射的红外光与所述第三光源发射的辅助光经所述集束结构呈线偏振光状态投射；和/或
    所述第二光源发射的可见光与所述第三光源发射的辅助光经所述集束结构呈线偏振光状态投射。
  19. 如权利要求18所述的光触控显示系统，其中，所述集束结构包括凸透镜。
  20. 如权利要求17所述的光触控显示系统，其中，所述光束发射器还包括设置于所述投射部的投射端口处的四分之一波片，所述第一光源发射的红外光和/或所述第二光源发射的可见光经所述四分之一波片呈圆偏振光状态投射。
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