JP2017102290A - Projection display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a projection display device that can represent various facial expressions and change the facial expression according to external stimulation.SOLUTION: A projection display device 1 comprises: a light source part 4; a liquid crystal panel 5 that modulates light from the light source part 4 and displays an image; a projection optical system that receives light from the liquid crystal panel 5; a screen on which light from the projection optical system is projected and that includes a face-shape three-dimensional structure; sensors 40, 50, 51, and 52 that are provided on the screen; and a control part 64 that changes an image to be displayed on the screen according to signals from the sensors 40, 50, 51, and 52.SELECTED DRAWING: Figure 8

Description

  The present invention relates to a projection display device, for example, a projection display device that projects an image on a transmissive screen.

  Robots have been developed that are used in the field of care, help users, and heal users. These robots can communicate with people by movement and voice. However, facial expressions are not adopted as a means of communication. To add facial expressions to a robot, a complicated mechanism is required.

Japanese Patent No. 5668211 JP-A-8-107983

  The present invention provides a projection display device that can express various facial expressions and can change facial expressions according to external stimuli.

  A projection display device according to an aspect of the present invention includes a light source unit, a display panel that modulates light from the light source unit to display an image, a projection optical system that receives light from the display panel, and the projection optical system. Light from the system is projected and a screen having a face-shaped three-dimensional structure, one or a plurality of sensors provided on the screen, and control for changing an image displayed on the screen in accordance with a signal from the sensor It comprises the part.

  ADVANTAGE OF THE INVENTION According to this invention, while being able to express various facial expressions, the projection display apparatus which can change a facial expression according to the stimulus from the outside can be provided.

The perspective view of the projection display apparatus which concerns on 1st Embodiment. The figure which shows typically the cross-section of the projection display apparatus which concerns on 1st Embodiment. 1 is a cross-sectional view of a liquid crystal panel according to a first embodiment. The front view and side view which showed typically the touch sensor contained in a face-shaped screen. The top view of a touch sensor. Sectional drawing of a touch sensor. The front view and side view of a face-shaped screen. 1 is a block diagram of a projection display device according to a first embodiment. The block diagram of a liquid crystal panel and a liquid-crystal drive part. The flowchart which shows operation | movement of the projection display apparatus which concerns on 1st Example. The flowchart which shows operation | movement of the projection display apparatus which concerns on 1st Example. The figure explaining an example of the image displayed on a face-shaped screen. 10 is a flowchart showing the operation of the projection display apparatus according to the second embodiment. The figure explaining an example of the image displayed on a face-shaped screen. 10 is a flowchart showing the operation of the projection display apparatus according to the third embodiment. The perspective view of the projection display apparatus which concerns on 2nd Embodiment. The side view of the projection display apparatus which concerns on 2nd Embodiment. The perspective view and top view of the supporting member for liquid crystal panels. Sectional drawing and rear view of a face-shaped screen. The perspective view of the foundation for a face-shaped screen.

  Hereinafter, embodiments will be described with reference to the drawings. However, it should be noted that the drawings are schematic or conceptual, and the dimensions and ratios of the drawings are not necessarily the same as the actual ones. Further, even when the same portion is represented between the drawings, the dimensional relationship and ratio may be represented differently. In particular, the following embodiments exemplify an apparatus and a method for embodying the technical idea of the present invention, and the technical idea of the present invention depends on the shape, structure, arrangement, etc. of components. Is not specified. In the following description, elements having the same function and configuration are denoted by the same reference numerals, and redundant description will be given only when necessary.

[1] First Embodiment [1-1] Configuration of Projection Display Device FIG. 1 is a perspective view of a projection display device 1 according to a first embodiment of the present invention. FIG. 2 is a diagram schematically showing a cross-sectional structure of the projection display device 1. The projection display device 1 includes a face screen 2 and a projector unit 3. The face-shaped screen 2 is fixed to the front end portion of the projector unit 3 by an arbitrary method.

  The face-shaped screen 2 is a face-shaped member having the shape of a human face (having a face-shaped three-dimensional structure), and is a transmissive screen having an inner surface 2a constituting a part of the face-shaped member as a projection surface. is there. For example, a material for diffusing light is applied to one or both of an inner surface and an outer surface of a translucent member, or a process for diffusing light is performed on the face-shaped screen 2. Therefore, light diffusibility is ensured. The face screen 2 may be formed using any material that diffuses light.

  The face-shaped screen 2 includes a face-shaped member 2-1 and a connecting member 2-2. The face-shaped member 2-1 has the shape of a human face. Generally, the face-shaped member 2-1 has a hemispherical shape or a partial shape of a sphere larger than the hemispherical shape. The connecting member 2-2 is for connecting the face-shaped member 2-1 and the projector unit 3, and an opening 2b is provided at the center of the connecting member 2-2. The opening 2 b is processed into a shape that can be fitted into the tip of the projector unit 3. The connecting member 2-2 is not limited to the planar shape as shown in FIG. For example, the face-shaped member 2-1 and the connecting member 2-2 may be combined to form a human head. The face-shaped member 2-1 and the connecting member 2-2 are joined using a transparent adhesive or the like so that the joint is not seen as much as possible. Of course, the face-shaped member 2-1 and the connecting member 2-2 may be integrally formed.

  The projector unit 3 includes a light source unit 4, a transmissive liquid crystal panel (liquid crystal display element) 5, and a radiation unit 6. The light source unit 4, the liquid crystal panel 5, the radiating unit 6, and the face-shaped screen 2 are integrally configured.

  The light source unit 4 includes a light source 11 provided on the substrate 10, a first lens L1 and a second lens L2 that constitute a light source optical system and face the light source 11, and the light source 11, the first lens L1, and the second lens. And a case 12 that accommodates L2.

  The light source 11 is composed of a point light source, for example. The light source optical system including the first lens L1 and the second lens L2 causes the light emitted from the point light source 11 to be incident on the liquid crystal panel 5 in a parallel light or a state close to parallel light. Although an arbitrary light source can be used as the point light source 11, it is preferable to use a high-intensity LED (Light Emitting Diode) in view of downsizing, power saving, and durability of the projection display device 1. For example, it is preferable to use a high-intensity white LED or a high-intensity RGB-LED.

  The shape of the case 12 is appropriately designed according to the member accommodated therein. The case 12 may be divided into a member that accommodates the light source 11 and a member that accommodates the lenses (the first lens L1 and the second lens L2). Since the lens is circular, the case 12 includes a support portion that fixes at least the circular lens.

  The liquid crystal panel 5 is driven according to image data (RGB data or the like), and displays an image expressed by the image data. The liquid crystal panel 5 functions as a light modulation element that modulates the light incident from the second lens L2 and thereby converts the image data into projection light. As will be described later, the liquid crystal panel 5 is driven by a control unit provided integrally or separately with the projector unit 3 based on image data.

  The liquid crystal panel 5 can be appropriately changed to other light modulation elements such as a transmissive type, a reflective type, and a self-luminous type as long as it converts image data into projection light. As a matter of course, when the reflective light modulation element is used, the configuration of the light source unit 4 needs to be changed, and when the self-luminous light modulation element is used, the light source unit 4 is not necessary. Become.

  The radiating unit 6 includes a cylindrical case 13 fitted in the opening 2b provided in the face-shaped screen 2, a third lens L3, a fourth lens L4, which are accommodated in the case 13 and face the liquid crystal panel 5. And a fifth lens L5. The shape of the case 13 is appropriately designed according to the member accommodated therein.

  The third lens L3 to the fifth lens L5 constitute a projection optical system, and this projection optical system radiates light transmitted through the liquid crystal panel 5, that is, projection light based on image data, toward the face-shaped screen 2. Then, the image represented by the image data is projected onto the inner surface 2 a of the face-shaped screen 2. Note that the number of lenses constituting the projection optical system is not limited to three as long as a projection optical system having a desired function can be realized.

  The projection optical system constituted by the third lens L3 to the fifth lens L5 has a short focal length, and projects the image onto a region exceeding the hemisphere on the inner surface 2a of the face-shaped screen 2. That is, the projection display device 1 of the present embodiment is a short focus wide angle type projection display device. The projection optical system has a distortion correction function that optically compensates for image distortion on the inner surface 2a of the facial screen 2 by using, for example, lenses described later as the third lens L3 to the fifth lens L5. It is secured.

  As an example of the configuration of the first lens L1 to the fifth lens L5, for example, the first lens L1 is a planoconvex lens, the second lens L2 is a Fresnel lens, the third lens L3 is an asymmetric biconvex lens, The lens L4 is a symmetric biconvex lens, and the fifth lens L5 is a meniscus lens having a convex surface in contact with the fourth lens L4.

  When the face-shaped member 2-1 is regarded as a part of a sphere, the optical axes L of the first lens L1 to the fifth lens L5 are arranged so as to pass through the center O of the face-shaped screen 2. Of the inner surface 2 a of the face-shaped screen 2, an area (area indicated by hatching in FIG. 2) is composed of a hemispherical area surrounded by a vertical plane M passing through the center O and an annular area extending from the hemispherical area toward the projector unit 3. This is a projection area where an image is projected on the inner surface 2 a of the face-shaped screen 2.

  The emitting surface 3a from which the projector unit 3 emits light (in the configuration example of FIG. 2, the surface of the fifth lens L5 on the face screen 2 side) is separated from the center O of the face screen 2 (the opening of the face screen 2). (Closer to the part 2b). Further, the radiation surface 3a is the end of the opening 2b on the inner surface 2a side at the maximum. By arranging the radiation surface 3a in this way, an image can be displayed in a larger area of the inner surface 2a of the face-shaped screen 2. The focal point of the projection optical system is set between the center O and the radiation surface 3a.

[1-1-1] Configuration of Liquid Crystal Panel 5 Next, an example of the configuration of the liquid crystal panel 5 will be described. FIG. 3 is a cross-sectional view of the liquid crystal panel 5.

  The liquid crystal panel 5 includes a TFT substrate 21 on which TFTs, pixel electrodes, and the like are formed, a color filter substrate (CF substrate) 22 on which color filters, common electrodes, and the like are formed and disposed opposite to the TFT substrate 21, and a TFT substrate 21. And a liquid crystal layer 23 sandwiched between the CF substrates 22. Each of the TFT substrate 21 and the CF substrate 22 is composed of a transparent substrate (for example, a glass substrate). The CF substrate 22 is disposed on the light source 11 side, and illumination light from the light source 11 enters the liquid crystal panel 5 from the CF substrate 22 side. The surface of the TFT substrate 21 opposite to the light source 11 is the display surface of the liquid crystal panel 5.

  The liquid crystal layer 23 is made of a liquid crystal material sealed with a sealing material (not shown) that bonds the TFT substrate 21 and the CF substrate 22 together. In the liquid crystal material, the alignment of liquid crystal molecules is manipulated according to the electric field applied between the TFT substrate 21 and the CF substrate 22, and the optical characteristics change. The liquid crystal layer 23 is composed of a liquid crystal layer including liquid crystal molecules having dielectric anisotropy, and is composed of, for example, nematic liquid crystal. The liquid crystal molecules of the nematic liquid crystal are electrically polarized in response to an external electric field. For example, a VA (Vertical Alignment) mode is used as the liquid crystal mode, but other liquid crystal modes such as a TN (Twisted Nematic) mode and a homogeneous mode may be used.

  A plurality of switching elements 24 are provided on the liquid crystal layer 23 side of the TFT substrate 21. The switching element 24 is composed of, for example, a thin film transistor (TFT). The TFT 24 includes a gate electrode electrically connected to the scanning line GL, a gate insulating film provided on the gate electrode, a semiconductor layer (eg, an amorphous silicon layer) provided on the gate insulating film, and a semiconductor layer. And a source electrode and a drain electrode which are provided apart from each other. The source electrode is electrically connected to the signal line SL.

  An insulating layer 25 is provided on the TFT 24. A plurality of pixel electrodes 26 are provided on the insulating layer 25. A contact plug 27 electrically connected to the pixel electrode 26 is provided in the insulating layer 25 and on the drain electrode of the TFT 24.

  A color filter 28 is provided on the liquid crystal layer 23 side of the CF substrate 22. The color filter 28 includes a plurality of coloring filters (coloring members), and specifically includes a plurality of red filters 28-R, a plurality of green filters 28-G, and a plurality of blue filters 28-B. A general color filter is composed of three primary colors of light, red (R), green (G), and blue (B). A set of three colors R, G, and B adjacent to each other is a display unit (pixel), and any single color portion of R, G, B in one pixel is a minimum called a subpixel (subpixel). It is a drive unit. The TFT 24 and the pixel electrode 26 are provided for each subpixel. In the following description, a subpixel is referred to as a pixel unless it is particularly necessary to distinguish between a pixel and a subpixel.

  A light shielding film (black matrix) 29 is provided at the boundary between the red filter 28-R, the green filter 28-G, and the blue filter 28-B, and the boundary between the pixels (subpixels). That is, the black matrix 29 is formed in a mesh shape. The black matrix 29 is provided, for example, to shield unnecessary light between coloring members and improve contrast.

  A common electrode 30 is provided on the color filter 28 and the black matrix 29. The common electrode 30 is formed in a planar shape over the entire display area of the liquid crystal panel 5.

  The circularly polarizing plates 31 and 32 are provided so as to sandwich the TFT substrate 21 and the CF substrate 22. Each of the circularly polarizing plates 31 and 32 includes a linear polarizer and a quarter wave plate.

  The pixel electrode 26, the contact plug 27, and the common electrode 30 are made of transparent electrodes, and for example, ITO (indium tin oxide) is used. As the insulating layer 25, a transparent insulating material is used, for example, silicon nitride (SiN).

[1-1-2] Configuration of Facial Screen 2 Next, a specific configuration of the facial screen 2 will be described. In the present embodiment, the position where the user touches the face-shaped screen 2 can be detected. For this reason, the face-shaped screen 2 includes a touch sensor. As the touch sensor, for example, a capacitive method (also referred to as a capacitive coupling method or a capacitive coupling method) is used.

  FIG. 4A is a front view schematically showing the touch sensor 40 included in the face-shaped screen 2. FIG. 4B is a side view schematically showing the touch sensor 40.

  The touch sensor 40 includes a plurality of drive lines 46 extending in a curved shape in the X direction and a plurality of sensing lines 47 extending in a curved shape in the Y direction. A plurality of first electrodes 42 are connected to each drive line 46. A plurality of second electrodes 44 are connected to each sensing line 47. Note that each of the first electrode 42 and the second electrode 44 illustrated in FIG. 4 is schematically illustrated, and the number and size of the electrodes are not as illustrated and can be arbitrarily designed. The drive line 46 and the sensing line 47 are not extended linearly as shown in FIG. 4, but are routed so as not to be seen from the front of the face-shaped screen 2, collected in one place, and connected to the control system circuit. The

  FIG. 5 is a plan view of the touch sensor 40 included in the face-shaped screen 2. In FIG. 5, a part of the touch sensor 40 included in the face-shaped screen 2 is extracted and shown. FIG. 6 is a cross-sectional view of the touch sensor 40. 6 is a diagram obtained by obliquely cutting the plan view of FIG.

  The face-shaped screen 2 includes transparent films 41, 43, and 45. Each of the transparent films 41, 43, 45 has the shape of a human face. The transparent films 41, 43, and 45 have insulating properties and are made of, for example, resin. A transparent film 41 is disposed on the inner surface of the face-shaped screen 2, and a transparent film 45 is disposed on the surface of the face-shaped screen 2.

  A plurality of first electrodes 42 are provided on the transparent film 41. The two first electrodes 42 arranged in the X direction are connected by a connection wiring 42A. In addition, one row of first electrodes 42 arranged in the X direction is connected to one drive line 46. The drive line 46 is routed through an arbitrary path, and an end thereof is connected to the terminal T1.

  A transparent film 43 is provided on the transparent film 41 and the plurality of first electrodes 42. A plurality of second electrodes 44 are provided on the transparent film 43. The two second electrodes 44 arranged in the Y direction are connected by a connection wiring 44A. A row of second electrodes 44 arranged in the Y direction is connected to one sensing line 47. The sensing line 47 is routed along an arbitrary route, and an end thereof is connected to the terminal T2.

  Each of the first electrode 42 and the second electrode 44 has, for example, a rhombus. Each of the 1st electrode 42 and the 2nd electrode 44 is comprised from a transparent electrode, for example, ITO is used.

  Next, an example of the electrode pattern will be described. As shown in FIG. 5, the plurality of first electrodes 42 are arranged in a matrix. The plurality of second electrodes 44 are arranged in a matrix so as to fill the gaps between the plurality of first electrodes 42. The plurality of first electrodes 42 and the plurality of second electrodes 44 are arranged so as not to overlap in plan view. The planar shape of the first electrode 42 and the second electrode 44 and the electrode pattern (consisting of the plurality of first electrodes 42 and the plurality of second electrodes 44) are not limited to those in FIG. 5 and can be arbitrarily set. .

  A pulse voltage (rectangular wave voltage) is sequentially applied to the plurality of drive lines. The touch position (or the tap position) can be detected by detecting the voltage change of the plurality of sensing lines 47 while scanning the plurality of drive lines.

  Note that the touch sensor 40 is not limited to the electrostatic capacity method shown in the present embodiment, and any other method may be used as long as it can detect that the user has touched the surface of the facial screen 2. For example, the touch sensor 40 can use a resistive film method, a surface capacitance method, a projection capacitance method, an ultrasonic surface elasticity method, an electromagnetic induction method, an infrared optical imaging method, and the like.

  Further, in the present embodiment, the configuration example in which the face-shaped screen 2 includes the touch sensor 40 is illustrated, but the present invention is not limited thereto, and the face-shaped screen 2 may not include the touch sensor 40. In this case, as described above, the face-shaped screen 2 is made of a transparent member.

[1-1-3] Configuration of Various Sensors Next, the configuration of various sensors attached to the face-shaped screen 2 will be described. FIG. 7A is a front view of the face-shaped screen 2. FIG. 7B is a side view of the face-shaped screen 2.

  An acceleration sensor 50 is attached to, for example, the upper part of the inner surface 2a of the face-shaped screen 2. The method for fixing the acceleration sensor 50 can be arbitrarily set, and an adhesive is used as the simplest fixing means. The acceleration sensor 50 detects that the facial screen 2 vibrates when the user touches the facial screen 2 or hits the facial screen 2. A wiring 54 (including a power line and a signal line) connected to the acceleration sensor 50 is drawn out of the face screen 2 from an opening provided in the face screen 2 and connected to a circuit that controls the acceleration sensor 50. Is done.

  A temperature sensor 51 is attached to, for example, the upper part of the inner surface 2a of the face-shaped screen 2. The fixing method of the temperature sensor 51 can be arbitrarily set, for example, is fixed with an adhesive. The temperature sensor 51 is composed of, for example, a thermocouple. The temperature sensor 51 detects that the temperature of the face-shaped screen 2 has changed. Wiring (including a power supply line and a signal line) 54 connected to the temperature sensor 51 is drawn from an opening provided in the face-shaped screen 2 and connected to a circuit that controls the temperature sensor 51.

  A human sensor 52 is attached to, for example, an upper portion of the surface of the face-shaped screen 2. The fixing method of the human sensor 52 can be arbitrarily set, for example, is fixed with an adhesive. The human sensor 52 includes, for example, a pyroelectric infrared sensor (also referred to as a pyroelectric sensor or an infrared sensor). The human sensor 52 detects that the user has approached the face screen 2 (the user has approached the face screen 2 within a predetermined distance). A wiring 54 (including a power supply line and a signal line) connected to the human sensor 52 is connected to a circuit that controls the human sensor 52.

  A heater 53 is attached to, for example, the lower part of the inside of the face screen 2. The fixing method of the heater 53 can be arbitrarily set. The heater 53 generates heat, warms the inside of the face screen 2 and also warms the face screen 2 itself. A power line 55 connected to the heater 53 is drawn from an opening provided in the face-shaped screen 2 and connected to a circuit that controls the heater 53.

[1-1-4] Circuit Configuration of Projection Display Device 1 Next, a circuit configuration of the projection display device 1 will be described. FIG. 8 is a block diagram of the projection display device 1. The projection display device 1 includes a liquid crystal panel 5, a light source unit 4, a touch sensor 40, an acceleration sensor 50, a temperature sensor 51, a human sensor 52, a heater 53, a liquid crystal driving unit 60, a power supply circuit 61, a storage unit 62, a timer 63, And a control unit 64.

  The liquid crystal driving unit 60 drives and controls the liquid crystal panel 5 and the light source unit 4. The power supply circuit 61 receives power from outside and generates a plurality of types of voltages using the external power supply. The power supply circuit 61 supplies corresponding voltages to a plurality of modules included in the projection display device 1.

  The storage unit 62 stores various data necessary for the operation of the projection display device 1. The storage unit 62 includes a nonvolatile memory and a volatile memory. The nonvolatile memory stores a program executed by the control unit 64 and, for example, image data. The volatile memory is used as a working memory for the control unit 64, for example.

  The timer 63 performs a time measuring operation. The control unit 64 uses the output of the timer 63 to determine whether or not a predetermined time has elapsed.

  The control unit 64 controls the overall operation of the projection display device 1. The control unit 64 includes a CPU (Central Processing Unit) and the like. The control unit 64 receives detection signals from various sensors (touch sensor 40, acceleration sensor 50, temperature sensor 51, and human sensor 52), and selects and displays an image to be displayed on the liquid crystal panel 5 based on the detection signals. Control. The control unit 64 controls the on state and the off state of the heater 53 based on detection signals from various sensors.

  Next, an example of the configuration of the liquid crystal driving unit 60 will be described. FIG. 9 is a block diagram of the liquid crystal panel 5 and the liquid crystal driving unit 60.

  The liquid crystal panel 5 includes a pixel array in which a plurality of pixels are arranged in a matrix. In the liquid crystal panel 5, a plurality of scanning lines GL each extending in the row direction (X direction) and a plurality of signal lines SL each extending in the column direction (Y direction) are arranged. A pixel 5 </ b> A is disposed in an intersection region between the scanning line GL and the signal line SL. In FIG. 9, four pixels are extracted and shown. The pixel 5A includes a TFT 24, a liquid crystal capacitor (liquid crystal element) Clc, and a storage capacitor Cs.

  The source of the TFT 24 is electrically connected to the signal line SL. The gate of the TFT 24 is electrically connected to the scanning line GL. The drain of the TFT 24 is electrically connected to the liquid crystal capacitor Clc. The liquid crystal capacitance Clc as a liquid crystal element is composed of a pixel electrode, a common electrode, and a liquid crystal layer sandwiched between them.

  The storage capacitor Cs is connected in parallel to the liquid crystal capacitor Clc. The storage capacitor Cs has a function of suppressing the potential fluctuation generated in the pixel electrode and holding the drive voltage applied to the pixel electrode until the drive voltage corresponding to the next signal is applied. The storage capacitor Cs includes a pixel electrode, a storage electrode (storage capacitor line), and an insulating film sandwiched between them. A common voltage Vcom is applied to the common electrode and the storage electrode by the common voltage supply circuit 60C.

  The liquid crystal driving unit 60 includes a scanning driver (scanning line driving circuit) 60A, a signal driver (signal line driving circuit) 60B, and a common voltage supply circuit 60C.

  The scan driver 60A is connected to a plurality of scan lines GL. The scan driver 60 </ b> A sends a scan signal for turning on / off the TFT 24 included in the pixel 5 </ b> A to the liquid crystal panel 5 based on the vertical control signal sent from the control unit 64.

  The signal driver 60B is connected to a plurality of signal lines SL. The signal driver 60B receives a horizontal control signal and display data from the control unit 64. The signal driver 60B sends a gradation signal (drive voltage) corresponding to the display data to the liquid crystal panel 5 based on the horizontal control signal.

  The common voltage supply circuit 60C generates a common voltage Vcom and supplies it to the liquid crystal panel 5.

[1-2] Operation of Projection Display Device 1 The operation of the projection display device 1 configured as described above will be described. Hereinafter, the operation of the projection display apparatus 1 will be described in the order of the first to third embodiments.

<First embodiment>
10 and 11 are flowcharts showing the operation of the projection display apparatus 1 according to the first embodiment. FIG. 12 is a diagram illustrating an example of an image displayed on the face screen 2.

  For example, the control unit 64 reads out expressionless face data from the storage unit 62 and displays the expressionless face on the face shape screen 2 (step S100, FIG. 12A).

  Subsequently, the control unit 64 uses the touch sensor 40 to monitor whether or not the user has touched, for example, the head of the facial screen 2 for a predetermined time (for example, 5 seconds) or longer (step S101). In step S101, it is assumed that the user detects an action of stroking the head portion of the face-shaped screen 2. When it is detected in step S101 that the user has touched the head of the facial screen 2 for a predetermined time or longer, the control unit 64 reads smile data from the storage unit 62 and displays the smile on the facial screen 2 ( Step S102, FIG. 12 (b)).

  Subsequently, the control unit 64 uses the acceleration sensor 50 to monitor whether or not the user has hit the head (or face) of the facial screen 2 (step S103). When it is detected in step S103 that the user has struck the head (or face) of the facial screen 2, the control unit 64 reads the angry face data from the storage unit 62, and the angry face is displayed on the facial screen. 2 (step S104, FIG. 12C).

  Subsequently, the control unit 64 turns on the heater 53 provided on the face-shaped screen 2 (step S105). Thereby, the temperature of the face (temperature of the face-shaped screen 2) can be increased while displaying the angry face on the face-shaped screen 2, so that the state where the person is angry can be expressed more specifically.

  Subsequently, the control unit 64 uses the temperature sensor 51 to monitor whether or not the temperature of the face-shaped screen 2 has become 39 degrees or higher (step S106). When it is detected in step S106 that the temperature of the facial screen 2 has become, for example, 39 degrees or more, the control unit 64 turns off the heater 53 (step S107).

  Subsequently, the control unit 64 uses the temperature sensor 51 to monitor whether or not the temperature of the facial screen 2 has become, for example, 36 degrees or less (step S108). When it is detected in step S108 that the temperature of the facial screen 2 has become 36 degrees or less, the control unit 64 reads smile data from the storage unit 62 and displays this smile on the facial screen 2 (step S102). ).

  As shown in FIG. 11, when the user is not hitting the head (or face) of the facial screen 2 in step S103, the control unit 64 monitors whether or not a predetermined time (for example, 100 days) has elapsed. (Step S200). The predetermined time in step S200 is set in consideration of the interval at which a person repeats a cold, for example.

  When the predetermined time has elapsed in step S200, the control unit 64 reads out the cold face data from the storage unit 62 and displays the cold face on the face shape screen 2 (step S201, FIG. 12D). If “YES” is determined in step S200, the predetermined time in step S200 is reset, and the time is measured again from zero.

  Subsequently, the control unit 64 turns on the heater 53 provided on the face-shaped screen 2 (step S202). This makes it possible to increase the temperature of the face (the temperature of the face-shaped screen 2) while displaying a cold face on the face-shaped screen 2, so that the cold state can be expressed more specifically.

  Subsequently, the control unit 64 uses the temperature sensor 51 to monitor whether or not the temperature of the face-shaped screen 2 has become, for example, 39 degrees or higher (step S203). That is, the control unit 64 once raises the temperature of the facial screen 2 to 39 degrees.

  Subsequently, it is assumed that the user reacts to a cold expression and lowers the temperature of the facial screen 2 using a cooling sheet or the like (FIG. 12E). Subsequently, the control unit 64 uses the temperature sensor 51 to monitor whether or not the temperature of the facial screen 2 has become, for example, 37 degrees or less (step S204).

  When it is detected in step S204 that the temperature of the face-shaped screen 2 has become 37 degrees or less, the control unit 64 turns off the heater 53 (step S205). Subsequently, the control unit 64 reads smile data from the storage unit 62 and displays this smile on the face screen 2 (step S206, FIG. 12 (f)).

<Second embodiment>
Next, a second embodiment will be described. FIG. 13 is a flowchart showing the operation of the projection display apparatus 1 according to the second embodiment. FIG. 14 is a diagram illustrating an example of an image displayed on the face screen 2.

  For example, the control unit 64 reads smile data from the storage unit 62 and displays the smile on the face-shaped screen 2 (step S300, FIG. 14A).

  Subsequently, the control unit 64 uses the touch sensor 40 to monitor whether or not the user has touched any part of the face (facial screen 2). Specifically, the control unit 64 monitors whether or not the user has touched any of the lips, eyes, and cheeks of the face-shaped screen 2 (steps S301, S303, and S305).

  Assume that the user touches the lips with a touch pen or the like. In this case, the control unit 64 changes the color of the lips (step S302, FIG. 14B). Specifically, the control unit 64 reads out image data of the face painted with lipstick from the storage unit 62 and displays this image on the face-shaped screen 2.

  Further, it is assumed that the user touches the eyes with a touch pen or the like. In this case, the control unit 64 changes the eye color (step S304, FIG. 14C). Specifically, the control unit 64 reads out image data of the face to which the color contact is attached from the storage unit 62 and displays this image on the face shape screen 2.

  It is assumed that the user touches the cheek using a touch pen or the like. In this case, the control unit 64 changes the color of the cheek (step S306, FIG. 14 (d)). Specifically, the control unit 64 reads out image data of a face painted with blusher from the storage unit 62 and displays this image on the face shape screen 2.

  When the same part is touched twice or more, the part may be changed to another color each time. In this case, a plurality of pieces of image data having different lip colors are stored in the storage unit 62, and the control unit 64 displays the plurality of pieces of image data on the face screen 2 in order each time the user touches the lips. . The other parts are the same as in the case of the lips.

<Third embodiment>
Next, a third embodiment will be described. FIG. 15 is a flowchart showing the operation of the projection display apparatus 1 according to the third embodiment.

  For example, the control unit 64 reads out expressionless face data from the storage unit 62, and displays the expressionless face on the face shape screen 2 (step S400).

  Subsequently, the control unit 64 uses the human sensor 52 to monitor whether or not the user has approached the face screen 2 within a predetermined distance (for example, 2 m) (step S401). When it is detected in step S401 that the user has approached the face screen 2 within a predetermined distance, the control unit 64 reads smile data from the storage unit 62 and displays this smile on the face screen 2 (step S401). S402).

  Subsequently, the control unit 64 uses the human sensor 52 to monitor whether or not the user has moved away from the face-shaped screen 2 beyond a predetermined distance (for example, 2 m) (step S403). When it is detected in step S403 that the user has moved away from the face screen 2 beyond a predetermined distance, the control unit 64 returns to step S400 and displays an expressionless face.

  The first to third embodiments described above can be arbitrarily combined and can be executed at the same time.

[1-3] Effects of the First Embodiment As described in detail above, in the first embodiment, the projection display device 1 modulates the light from the light source unit 4 and the light source unit 4 to display an image. (Display panel) 5, a radiation unit 6 including a projection optical system that receives light from the liquid crystal panel 5, and a face screen 2 that projects light from the projection optical system and has a face-shaped three-dimensional structure. In addition, the projection display device 1 includes a plurality of sensors (touch sensor 40, acceleration sensor 50, temperature sensor 51, and human sensor 52) provided on the face-shaped screen 2, and signals from the plurality of sensors. And a control unit 64 that changes an image displayed on the face-shaped screen 2.

  Therefore, according to the first embodiment, it is possible to realize the projection display device 1 that can express various facial expressions and can change facial expressions according to external stimuli. In addition, various facial expressions can be expressed at a lower cost.

  Moreover, the light source part 4, the liquid crystal panel 5, the radiation | emission part 6, and the face-shaped screen 2 are comprised integrally. Thereby, since the human face comprised with the projection display apparatus 1 can be easily attached to arbitrary apparatuses, the projection display apparatus 1 can respond to various uses.

  Further, for example, the touch sensor 40 having a capacitance method can detect the touch position for the entire face-shaped screen 2. Accordingly, various facial expressions can be expressed according to the position of the face touched by the user.

  Moreover, the temperature of the face-shaped screen 2 can be changed by attaching the heater 53 to the face-shaped screen 2. Thereby, since states other than facial expressions can be added, richer communication can be achieved.

  The projection display device 1 may be configured to include only a part of the touch sensor 40, the acceleration sensor 50, the temperature sensor 51, and the human sensor 52. For example, when the projection display device 1 is configured to include only the touch sensor 40, the facial expression is changed only according to the operation of the user touching the face-shaped screen 2. Further, when the projection display device 1 is configured to include only the acceleration sensor 50, the facial expression is changed only in accordance with the vibration of the facial screen 2.

[2] Second Embodiment When projecting an image on a face-shaped screen, a light source with high light intensity is used. When the liquid crystal panel receives strong light, the polarizing plate used for the liquid crystal panel is deteriorated. Further, regarding the facial shape screen, since each user has different demands, a facial shape according to the user is required. Therefore, in the second embodiment, the deteriorated liquid crystal panel can be replaced and the facial screen can be replaced.

  FIG. 16 is a perspective view of the projection display apparatus 1 according to the second embodiment. FIG. 17 is a side view of the projection display device 1.

  The base 70 is constituted by a panel having a square planar shape, for example. The material of the base 70 is not particularly limited as long as the strength can secure a desired value, but a lighter one is desirable. On the base 70, the projector unit 3 (the light source unit 4, the liquid crystal panel 5, and the radiation unit 6) is provided. The light source unit 4, the liquid crystal panel 5, and the radiation unit 6 are separated from each other. The radiating unit 6 has, for example, a rectangular parallelepiped so as to be easily fixed to the base 70, for example. If the lens included in the radiation unit 6 can be fixed, the shape of the case for the radiation unit 6 can be arbitrarily set.

  The light source unit 4 is fixed to the base 70 using an arbitrary number of fixing members (for example, screws) 73. Similarly, the radiating portion 6 is fixed to the base 70 using an arbitrary number of fixing members (for example, screws) 74.

  The liquid crystal panel 5 is fixed by a support member described later. As will be described later, the liquid crystal panel 5 is configured to be detachable from the base 70. A wiring unit 72 is connected to the liquid crystal panel 5, and the wiring unit 72 is connected to a control system circuit. The wiring part 72 is comprised, for example from a flexible printed circuit board (FPC: flexible printed circuit). The wiring part 72 is pulled out below the base 70 through an opening provided in the base 70.

  A base 71 for the face-shaped screen 2 is attached to the end (side surface) of the base 70 on the side of the radiating portion 6. The base 70 and the base 71 are firmly fixed using an adhesive or the like. The face screen 2 is attached to the base 71. As will be described later, the face screen 2 is configured to be detachable from the base 71.

  FIG. 18A is a perspective view of the support members 75 and 76 for the liquid crystal panel 5. FIG. 18B is a plan view of the support members 75 and 76 for the liquid crystal panel 5.

  The support members 75 and 76 are provided on both sides of a region where the liquid crystal panel 5 is disposed, and partially sandwich the liquid crystal panel 5. The support member 75 extends in the Y direction and is provided to the vicinity of both ends of the base 70 in the Y direction. The support member 76 is provided in parallel with the support member 75 and is provided from the vicinity of one end of the base 70 to the vicinity of an opening 77 described later.

  The base 70 is provided with an opening 77 through which the wiring part 72 connected to the liquid crystal panel 5 passes. The opening 77 is disposed in or near the region where the liquid crystal panel 5 is disposed. For example, the opening 77 is disposed on an extension line of the support member 76.

  The distance between the support member 75 and the support member 76 is set according to the thickness of the liquid crystal panel 5. The support members 75 and 76 are firmly fixed to the base 70 using an adhesive or the like. The height of the support members 75 and 76 can be arbitrarily set as long as the display light emitted from the liquid crystal panel 5 is not blocked. Note that the liquid crystal panel 5 may be fixed to the light source unit 4 and / or the radiation unit 6 using a fixing member that can be attached to and detached from the liquid crystal panel 5 at an arbitrary location. Thereby, it can prevent that the liquid crystal panel 5 remove | deviates from the base 70. FIG.

  Next, the configuration of the face screen 2 and the base 71 will be described. FIG. 19A is a cross-sectional view of the face-shaped screen 2, and FIG. 19B is a rear view of the face-shaped screen 2. FIG. 20 is a perspective view of the base 71 for the face-shaped screen 2. In this embodiment, the face-shaped screen 2 is attached to the base 71 using, for example, a magnet. Thereby, the face-shaped screen 2 is configured to be detachable from the base 71.

  The face-shaped screen 2 does not include the connecting member 2-2 illustrated in FIG. 2, and has a substantially hemispherical shape (a ridge shape). The peripheral edge of the face-shaped screen 2 is processed flat.

  The face-shaped screen 2 includes an attachment member 80 at the peripheral edge (portion attached to the base 71). The attachment member 80 is processed to be flat. The attachment member 80 is comprised from a magnet layer, for example. The magnet layer 80 has a substantially elliptical planar shape. For the magnet layer 80, a magnetic tape that can be bonded to the face-shaped screen 2 can be used. A depression (concave portion) 81 is provided on the upper part of the magnet layer 80. For example, the magnet layer 80 is not formed on a part of the peripheral edge of the face-shaped screen 2, so that this part becomes the recess 81. The planar shape of the recess 81 is, for example, a quadrangle.

  As shown in FIG. 20, the base 71 has an opening 71 </ b> A through which light from the projector unit 3 passes at the center thereof. An attachment member 82 is provided on the surface of the base 71 on which the face-shaped screen 2 is attached. The attachment member 82 is composed of, for example, a magnet layer. The magnet layer 82 has substantially the same planar shape as the magnet layer 80 of the face-shaped screen 2. For the magnet layer 82, a magnetic tape that can be bonded to the base 71 can be used. The face screen 2 is attached to the base 71 by the magnet layer 82 of the base 71 and the magnet layer 80 of the face screen 2 sticking together.

  A protrusion 83 is provided on the upper part of the magnet layer 80. The material of the protrusion 83 can be arbitrarily selected. The protrusion 83 is fitted in the recess 81 of the face-shaped screen 2. For this reason, the planar shape of the protrusion 83 is the same as that of the recess 81, and the size of the protrusion 83 is set slightly smaller than the size of the recess 81. The protrusion 83 and the recess 81 have a function of fixing the mounting position of the face screen 2 and a function of preventing the face screen 2 from being displaced from the base 71.

  The magnet layer 82 may be made of a ferromagnetic material (ferromagnetic metal). Further, a ferromagnetic layer may be provided on the face screen 2 side, and a magnet layer may be provided on the base 71 side. That is, one of the attachment members 80 and 82 may be made of a magnet and the other may be made of a material that sticks to the magnet.

(effect)
As described in detail above, in the second embodiment, the projection display device 1 is fixed to the base 70 on which the light source unit 4, the liquid crystal panel 5, and the radiation unit 6 are placed, and the liquid crystal panel 5 is mounted on the base 70. And supporting members 75 and 76 for supporting. The liquid crystal panel 5 is configured to be detachable from the base 70. Thereby, when the liquid crystal panel 5 deteriorates, only the liquid crystal panel 5 can be replaced. Therefore, the life of the projection display device 1 can be extended.

  Further, the projection display device 1 is fixed to an end of the base 70 on the side of the radiating portion 6 and has a base 71 having an opening 71A through which light from the projection optical system passes, and an attachment member 80 provided on the face-shaped screen 2. And a mounting member 82 provided on the base 71 and attachable to and detachable from the mounting member 80. The face screen 2 is configured to be detachable from the base 71. Thereby, according to a user's request, the face-shaped screen 2 can be replaced | exchanged easily. Therefore, the life of the projection display device 1 can be extended.

  In each of the above embodiments, a screen having a human face shape (face shape screen) is used, but the screen may be configured to have a face shape of an animal other than a human.

  In this specification, a board, a film, etc. are expressions which illustrated the member, and are not limited to the structure. For example, the transparent film, the polarizing plate, and the like are not limited to the members as the name, and may be other members having the functions described in the specification.

  In each of the above embodiments, a liquid crystal display device is exemplified as the display panel. However, as other application examples, an organic EL (electroluminescence) display device, another self-luminous display device, or an electronic paper having an electrophoretic element or the like. Any flat panel type display device such as a type display device may be mentioned.

  The present invention is not limited to the above embodiment, and can be embodied by modifying the constituent elements without departing from the scope of the invention. Further, the above embodiments include inventions at various stages, and are obtained by appropriately combining a plurality of constituent elements disclosed in one embodiment or by appropriately combining constituent elements disclosed in different embodiments. Various inventions can be configured. For example, even if some constituent elements are deleted from all the constituent elements disclosed in the embodiments, the problems to be solved by the invention can be solved and the effects of the invention can be obtained. Embodiments made can be extracted as inventions.

  DESCRIPTION OF SYMBOLS 1 ... Projection display apparatus, 2 ... Face screen, 3 ... Projector part, 4 ... Light source part, 5 ... Liquid crystal panel, 6 ... Radiation part, 10 ... Substrate, 11 ... Light source, 12, 13 ... Case, 21 ... TFT substrate 22 ... CF substrate, 23 ... liquid crystal layer, 24 ... switching element, 25 ... insulating layer, 26 ... pixel electrode, 27 ... contact plug, 28 ... color filter, 29 ... light-shielding film, 30 ... common electrode, 31, 32 ... Circular polarizing plate, 40 ... touch sensor, 41, 43, 45 ... transparent film, 42, 44 ... electrode, 46 ... drive line, 47 ... sensing line, 50 ... acceleration sensor, 51 ... temperature sensor, 52 ... human sensor, 53 ... Heater, 54 ... Wiring, 55 ... Power line, 60 ... Liquid crystal drive unit, 60A ... Scan driver, 60B ... Signal driver, 60C ... Common voltage supply circuit, 61 ... Power supply circuit , 62 ... storage section, 63 ... timer, 64 ... control section, 70, 71 ... base, 72 ... wiring section, 73, 74 ... fixing member, 75, 76 ... support member, 77 ... opening, 80, 82 ... attachment Element

Claims (14)

A light source unit;
A display panel that modulates light from the light source unit and displays an image;
A projection optical system that receives light from the display panel;
A screen on which light from the projection optical system is projected and having a face-shaped three-dimensional structure;
One or more sensors provided on the screen;
And a control unit that changes an image displayed on the screen in accordance with a signal from the sensor.   The projection display device according to claim 1, wherein the light source unit, the display panel, the projection optical system, and the screen are configured as one unit.   The projection display device according to claim 1, wherein the sensor includes a touch sensor that detects that a person touches the screen.   The projection display device according to claim 3, wherein the touch sensor is a capacitive type.   The projection display device according to claim 1, wherein the sensor includes an acceleration sensor that detects that a person has hit the screen.   The projection display device according to claim 1, wherein the sensor includes a human sensor that detects that a person has approached the screen.   The projection display device according to claim 1, wherein the sensor includes a temperature sensor that detects a change in temperature of the screen. A heater provided on the screen for heating the screen;
The projection display device according to claim 1, wherein the control unit controls an on state and an off state of the heater in accordance with a signal from the sensor.   The projection display device according to claim 1, wherein the light source unit includes a light source and a light source optical system that receives light from the light source. A first base on which the light source unit, the display panel, and the projection optical system are placed;
A first and second support member fixed to the first base and sandwiching the display panel;
The projection display device according to claim 1, wherein the display panel is configured to be detachable by the first and second support members. A second base fixed to an end of the first base on the projection optical system side and having an opening through which light from the projection optical system passes;
The projection display device according to claim 10, wherein the screen is configured to be detachable from the second base. A first attachment member provided at a peripheral edge of the screen;
The projection display device according to claim 11, further comprising: a second mounting member that is provided on the second base and is detachable from the first mounting member.   The projection display device according to claim 12, wherein each of the first and second attachment members is a magnet.   The projection display device according to claim 10, wherein the first base has an opening through which a wiring portion connected to the display panel is passed.