Image pickup device with display function

Abstract

Provided is an imaging device with a display function. An imaging device with a display function is provided with: a liquid crystal panel (50); an infrared camera (60) having a condenser lens and an imaging element; and a backlight (70) disposed on the rear surface of the liquid crystal panel, the liquid crystal panel having a display region including a first region (DR1) and a second region (DR2) located at a position surrounding the first region in plan view, at least an imaging element (61) of the infrared camera (60) being disposed on an optical path of light that passes through the first region and the condenser lens, and the imaging element (61) being disposed on an optical path of light that passes through the second region and the condenser lens. The liquid crystal panel at least has no black matrix in the first area, and has color filters in the first area and the second area.

Description

Technical Field

[0001] The present disclosure relates to a camera device with a display function. Background Art

[0002] In order to assist the safe driving of vehicles such as cars and trains, research is being conducted to photograph the driver and analyze the driver's state based on the photographed image. In order to photograph the driver, it is preferred that the camera device is arranged on the dashboard opposite to the driver's face.

[0003] In recent years, information required for operation, such as a speedometer arranged on an instrument panel, is displayed on a flat display such as a liquid crystal display device. Therefore, for example, Patent Document 1 discloses a display device in which a liquid crystal panel is arranged on an instrument panel and a camera is arranged on the back of the liquid crystal panel. Prior art literature Patent Literature

[0004] Patent Document 1: Japanese Patent Application Publication No. 2014-031140 Summary of the invention Technical Problems to be Solved by the Invention

[0005] An object of the present disclosure is to provide an imaging device with a display function that can obtain a clear subject image. Technical solutions for solving technical problems

[0006] A camera device with a display function in one embodiment of the present disclosure comprises: a liquid crystal panel; an infrared camera having a focusing lens and a camera element; and a backlight, which is arranged on the back side of the liquid crystal panel, the liquid crystal panel having a display area when viewed from above, the display area including a first area and a second area located at a position surrounding the first area, at least the camera element of the infrared camera is arranged on the optical path of light that passes through the first area and the focusing lens, the liquid crystal panel does not have a black matrix in at least the first area, and has color filters in the first area and the second area. Beneficial Effects

[0007] According to one embodiment of the present disclosure, there is provided an imaging device with a display function capable of acquiring a clear subject image by using an infrared camera disposed on the back side of a liquid crystal panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 The wavelength dependence of the light transmittance of a color filter and a black matrix used in a general liquid crystal panel is shown. Figure 2 An example of obtaining a subject image that transmits a liquid crystal panel by using infrared light as illumination light is shown. Figure 3A schematic plane diagram showing a color filter and a black matrix of a liquid crystal panel, and the transmittance of red light, green light, blue light, and infrared light on line AA. Figure 4 Schematic diagram showing generation of diffraction images based on red light, green light, blue light, and infrared light. Figure 5 It is an exploded perspective view showing a schematic configuration of the imaging device with a display function according to the first embodiment. Figure 6 yes Figure 5 Schematic cross-sectional view of the main parts of the camera device with display function shown. Figure 7 is a schematic cross-sectional view of the first region of the liquid crystal panel in the x-axis direction. Figure 8 is a schematic cross-sectional view of the second region of the liquid crystal panel 50 in the x-axis direction. Fig. 9 is a schematic cross-sectional view of the second region in the y-axis direction. Fig.10 This is a schematic exploded perspective view of the main components of a liquid crystal panel. Fig.11 This is a plan view of the color filter and black matrix. Fig.12 1 is a schematic cross-sectional view of a first region of the imaging device with a display function according to the second embodiment, in the x-axis direction. Fig.13 It is a schematic cross-sectional view in the y-axis direction of a first region of a pixel where a red filter is arranged on a counter substrate in the second embodiment. Fig.14 It is a schematic cross-sectional view in the y-axis direction of a first region of a pixel where a green filter is arranged on a counter substrate in the second embodiment. Fig.15 1 is a schematic cross-sectional view in the y-axis direction of a first region of a pixel where a blue filter is arranged on a counter substrate in the second embodiment. Fig.16 1 is a schematic cross-sectional view of the first region of the imaging device with another display function according to the second embodiment, in the x-axis direction. Fig.17 yes Fig.16 1 is a schematic cross-sectional view in the y-axis direction of a first region of a pixel provided with a red filter on an opposing substrate. Fig.18 yes Fig.16 1 is a schematic cross-sectional view of a first region of a pixel provided with a green filter on the opposite substrate in the y-axis direction. Fig.19 yes Fig.161 is a schematic cross-sectional view of a first region of a pixel provided with a blue filter on an opposing substrate in the y-axis direction. Fig. 20 It is a schematic cross-sectional view of an imaging device with a display function according to a third embodiment. Fig.21 It is a schematic cross-sectional view of an imaging device with another display function according to the third embodiment. Fig. 22 It is an exploded perspective view of main components of a liquid crystal panel in an image pickup device with a display function according to a fourth embodiment. Fig.23 It is a schematic cross-sectional view of an imaging device with a display function according to a fifth embodiment. Fig.24 It is a schematic plan view of the main part of the imaging device with a display function according to the fifth embodiment. Fig.25 It is a schematic cross-sectional view of an imaging device with another display function according to a fifth embodiment. Fig.26 This is a schematic plan view showing an example of arrangement of a plurality of illumination light emitting elements and a plurality of infrared light emitting elements of a backlight in another imaging device with a display function according to the fifth embodiment. Fig. 27 It is a schematic cross-sectional view of an imaging device with a display function according to a sixth embodiment. Fig.28 This is a timing chart showing the operation timing of each unit in the imaging device with a display function according to the seventh embodiment. Fig.29 This is another timing chart showing the operation timing of each unit in the imaging device with a display function according to the seventh embodiment. Fig.30 This is another timing chart showing the operation timing of each unit in the imaging device with a display function according to the seventh embodiment. Fig.31 This is another timing chart showing the operation timing of each unit in the imaging device with a display function according to the seventh embodiment. Fig.32 It is a schematic cross-sectional view of an imaging device with a display function according to an eighth embodiment. DETAILED DESCRIPTION

[0009] The configuration of disposing a camera device near a display device is implemented in smart phones, tablet terminals, notebook computers, etc. However, in these devices, the position of the lens or lens window representing the camera device can be clearly identified. Therefore, when the same structure is used to constitute a dashboard of a car, it can be considered that the driver will be aware of the presence of the camera device every time he sees the display of the liquid crystal panel.

[0010] In order to make the position of the camera device inconspicuous, a notch is provided on one side of the display device and the camera device is arranged in the area within the notch. In the case of a car dashboard formed by such a structure, the display area is not rectangular, but the notch is missing. Therefore, if the aesthetics of the dashboard in the display state is damaged, or if the camera device is arranged in the notch part where the image is not displayed, it will be recognized by the driver. Similarly, the driver will be aware of the existence of the camera device every time he sees the display of the liquid crystal panel.

[0011] In view of such a problem, the inventors of the present application studied whether it is possible to arrange an imaging device in a display area capable of displaying images, for example, to arrange an imaging device that acquires images based on infrared rays in the center of a liquid crystal panel to acquire infrared images through the liquid crystal panel.

[0012] Figure 1 It shows the wavelength dependence of the transmittance of the color filter used in general liquid crystal panels. Figure 1 As shown, the blue (B), green (G), and red (R) filters (monochromatic filters) have the optical property of selectively transmitting light in the blue, green, and red bands in the visible region, respectively. On the other hand, the blue, green, and red filters do not absorb light with a wavelength longer than the visible region and transmit it. For example, the transmittance of infrared light with a wavelength of 950nm is about 90% for any filter. On the other hand, the black matrix (BM) configured in the boundary area of ​​the color filter has a transmittance of about 0.1% for both visible light and infrared light.

[0013] It is known that polarizing plates and liquid crystal layers have almost no optical effect on infrared rays. Therefore, when infrared rays are used as illumination light and an image is acquired by a camera through a liquid crystal panel equipped with a color filter, it can be considered that the image is acquired with almost no difference in transmittance caused by the blue, green, and red filter regions.

[0014] Figure 2 FIG. 4 shows an example of obtaining a subject image through a liquid crystal panel by using infrared light as illumination light. Figure 2 As shown, although an image can be obtained, it is not a clear image, but a multiple image. In particular, the jitter of the horizontal image is greater than that of the vertical image. This is believed to be the influence of the black matrix of the liquid crystal panel.

[0015] Figure 3This is a schematic plan view of the color filter and black matrix of the liquid crystal panel. The transmittance of red light, green light, blue light and infrared light in the AA line is shown below. In the filter area of ​​each color of RGB, light of each wavelength band is selectively transmitted. For example, red light only selectively transmits the area of ​​the red filter and is almost absorbed in the areas of the green filter and the blue filter. The same is true for green light and blue light. Therefore, the transmission area in the direction of the AA line repeats with the same period for red light, green light, and blue light.

[0016] On the other hand, as described above, infrared light is transmitted to the same extent regardless of the color of the filter, but the transmittance of the black matrix to infrared light of a wavelength of 950 nm is about 0.1%, and most of the infrared light is blocked.

[0017] The areas through which red light, green light, blue light, and infrared light are transmitted correspond to the slits of the diffraction grating, and the color filter and the black matrix function as diffraction gratings for red light, green light, blue light, and infrared light. For red light, green light, and blue light, the value of three times the pixel pitch in the AA line direction becomes the slit interval, and for infrared light, the value of the pixel pitch becomes the slit interval. With respect to the slit interval d, the wavelength of light is set to λ, and the interval D of the positions where the light is mutually enhanced by the diffraction grating, so that the diffraction image is formed, is expressed as approximately D∝λ / d.

[0018] In addition, the brightness of the generated diffraction image depends on the ratio A=Amax / Amin between the maximum transmittance Amax and the minimum transmittance Amin.

[0019] Figure 4 Schematic diagram showing the generation of diffraction images based on red light, green light, blue light and infrared light. For the image of the subject, the image based on red light, green light, blue light and infrared light includes diffraction images of ±1 times, ±2 times, ±3 times... As described above, the interval D of the diffraction images is proportional to the wavelength λ and inversely proportional to the interval d of the slits. Therefore, for the diffraction images based on red light, green light and blue light, although the slit intervals are equal, the wavelengths are different, so the interval of the blue diffraction image becomes the shortest. On the other hand, with respect to infrared light, since the slit interval d is three times that of red light, etc., and the wavelength is also long, the interval of the diffraction image of infrared light is more than three times the interval of the diffraction image based on red light, green light and blue light. As a result, it can be considered that when infrared light is used for shooting, the diffraction image is recognized as a multiple image.

[0020] Each pixel is longer in the y-axis direction than in the x-axis direction where the blue, green, and red filters are arranged. That is, the pixel pitch is shorter in the x-axis direction. Figure 2 As shown, the image jitter in the x-axis direction becomes larger than that in the y-axis direction.

[0021] Based on such research results, the inventor of the present application has come up with a camera device with a display function. The camera device with a display function disclosed in the present application can capture the front side of the display device, that is, the subject opposite to the display area. The camera device with a display function can be referred to as an electronic device having a camera device and a display device, or can be referred to as a display device with a camera device.

[0022] Such a camera device with a display function is installed on the dashboard of a car, and can be suitable for photographing the upper body of the driver, especially the face. In addition, it is not limited to cars, and is suitable for photographing people who drive or operate vehicles such as trains and airplanes. In addition, as described later, the camera device with a display function of the present invention can shoot from an area within the display area. Therefore, for example, in the case where the camera device with a display function of the present invention is used as a display of a notebook computer, a tablet terminal, or a smart phone, it is possible to shoot from near the position of the eyes of the face displayed on the display. Therefore, in the case of a Web conference, compared with the case where a camera is configured in the existing frame area, it is possible to obtain an image of the other party of the conference across the display at a more natural angle, that is, the direction of the line of sight of looking at each other's face or eyes during the conference.

[0023] The following describes the camera device with a display function of the present disclosure based on the accompanying drawings. The present disclosure is not limited to the following embodiments, and design changes can be appropriately made within the scope of the configuration of the present disclosure. In addition, in the following description, the same figure mark is sometimes used in common between different drawings for the same part or the part with the same function, and its repeated description is omitted. In addition, the various structures described in the embodiments and modified examples can be appropriately combined or changed within the scope of the main purpose of the present disclosure. In order to facilitate the understanding of the description, in the drawings referred to below, the structure is sometimes simplified or schematically represented, or a part of the components is omitted. In addition, the size ratio between the components shown in the various figures does not necessarily represent the actual size ratio.

[0024] (First Embodiment) Figure 5 An exploded perspective view showing a schematic configuration of the imaging device with a display function according to the present embodiment, Figure 6 This is a schematic cross-sectional view of the main part of the imaging device with a display function according to this embodiment.

[0025] The camera device with display function 101 includes a liquid crystal panel 50, an infrared camera 60, and a backlight 70. In addition, the camera device with display function 101 also includes a cover glass 90, a first polarizing plate 91, a second polarizing plate 92, and an optical structure 80. The liquid crystal panel 50, the backlight 70, the first polarizing plate 91, the second polarizing plate 92, and the optical structure 80 constitute a display device.

[0026] The liquid crystal panel 50 has a front surface 50a and a back surface 50b. The front surface 50a includes a display region DR and a non-display region NR surrounding the display region DR and located around the display region DR. The display region DR is a region where an image is displayed, and the non-display region NR is a region where no image is displayed by setting a drive circuit, wiring, etc.

[0027] The display region DR includes a first region DR1 and a second region DR2. The first region DR1 is surrounded by the second region DR2. The first region DR1 is preferably arranged in the center of the display region DR, preferably in the center away from the outer edge of the display region DR. The second region DR2 is a region outside the first region DR1 in the display region DR, and the outer edge of the first region DR1 is connected to the inner edge of the second region DR2. The first region DR1 and the second region DR2 are regions defined on the front side 50a, and are also continuously defined in the thickness direction of the liquid crystal panel 50. That is, the first region DR1 and the second region DR2 are also defined on the back side 50b, and in a plan view, the first region DR1 and the second region DR2 on the front side 50a overlap with the first region DR1 and the second region DR2 on the back side 50b, respectively.

[0028] The first region DR1 has a circular shape with a diameter of about 5 mm or more and about 2 cm or less, for example. The shape of the first region DR1 is not limited to a circle, and may be an ellipse, an oval, a rectangle, or a polygon.

[0029] As described in detail below, the liquid crystal panel 50 is configured to display an image in the entire display area DR. That is, a color image can be displayed in the first area DR1 and the second area DR2. More specifically, pixels are formed in the first area DR1 and the second area DR2 of the liquid crystal panel 50, and color filters are arranged. The liquid crystal panel 50 does not have a black matrix in the first area DR1. In other words, the black matrix is ​​only arranged in the second area DR2, and is not arranged in the first area DR1.

[0030] The first polarizing plate 91 and the second polarizing plate 92 are respectively arranged on the front side 50a and the back side 50b of the liquid crystal panel 50. The first polarizing plate 91 and the second polarizing plate 92 respectively cover the first region DR1 and the second region DR2 and overlap. By also arranging the first polarizing plate 91 and the second polarizing plate 92 in the first region DR1, the same image as that in the second region DR2 can be displayed in the first region DR1. In addition, since there is no need to process the first polarizing plate 91 and the second polarizing plate 92, the manufacturing cost can be reduced. The first polarizing plate 91 and the second polarizing plate 92 are arranged in an orthogonal Nicol relationship.

[0031] The cover glass 90 is disposed on the first polarizing plate 91 to protect the liquid crystal panel 50. The backlight 70 is disposed outside the second polarizing plate 92 via the optical structure 80.

[0032] The optical structure 80 improves the uniformity of light emitted from the backlight 70 and adjusts the traveling direction of the light so that it is incident in a vertical direction relative to the liquid crystal panel 50, thereby improving the brightness. For example, the optical structure 80 includes a brightness enhancement film 81 such as a BEF (Brightness Enhancement Film) and a diffuser 82. Figure 5 In the figure, the optical structure 80 only represents these two components, but the optical structure 80 may also include other optical elements in the form of plates or films. The optical structure 80 has an optical structure through hole 80h in the region overlapping with the first region DR1. In this embodiment, a through hole 81h and a through hole 82h are respectively provided in the region overlapping with the brightness enhancement film 81 and the first region DR1 of the diffusion plate 82.

[0033] Next, the structure of the liquid crystal panel 50 will be described in detail. The liquid crystal panel 50 may be a liquid crystal panel of various drive methods, and has a characteristic of not having a black matrix in the first region DR1. Figure 7 and Figure 8 is a schematic cross-sectional view of the first region and the second region of the liquid crystal panel 50 in the x-axis direction, Fig. 9 : represents a schematic cross-sectional view in the y-axis direction in the second region. Fig.10 A schematic exploded perspective view showing main components of the liquid crystal panel 50 . Fig.11 This is a plan view of the color filter and black matrix.

[0034] The liquid crystal panel 50 includes a TFT substrate 10 , an opposing substrate 40 , and a liquid crystal layer 30 disposed between the TFT substrate 10 and the opposing substrate 40 .

[0035] The TFT substrate 10 has the same structure in the first region DR1 and the second region DR2. That is, the liquid crystal panel 50 has the same driving structure in the first region DR1 and the second region DR2. Specifically, the TFT substrate 10 includes: a substrate 11, a plurality of scanning lines 12, an insulating layer 13, a plurality of data lines 14, a plurality of pixel electrodes 15, a plurality of TFTs, an insulating layer 16, and a relative electrode 19. Each TFT has a gate 12b and a semiconductor layer 17, a source 14s, and a drain 18. The scanning line 12, the data line 14, the gate 12b, the source 14s, and the drain 18 are, for example, made of a metal that does not substantially transmit visible light and infrared light. The pixel electrode 15 and the relative electrode 19 are made of a transparent conductor such as ITO that transmits visible light and infrared light.

[0036] The substrate 11 is a substrate made of glass or the like that transmits visible light and infrared light. A primer layer or the like may be provided on the surface of the substrate 11. A plurality of scanning lines 12 extend along the x-axis direction on the substrate 11 and are arranged along the y-axis direction. The gate 12b of each TFT is connected to the scanning line 12.

[0037] A gate insulating film constituting a part of the insulating layer 13 is formed on the substrate 11 so as to cover the plurality of scanning lines 12 and the gate electrode 12b. The semiconductor layer 17 is located on the gate insulating film so as to overlap with the gate electrode 12b in a plan view.

[0038] A plurality of data lines 14 extend along the y-axis direction on the gate insulating film and are arranged along the x-axis direction. One end of the source electrode 14s of each TFT is connected to the data line 14. The other end of the source electrode 12s is connected to the semiconductor layer 17.

[0039] The drain electrode 18 and the source electrode 14 s are arranged to be separated from each other in the x-axis direction via the gate electrode 12 b , and one end of the drain electrode 18 is connected to the semiconductor layer 17 .

[0040] The insulating film constituting a part of the insulating layer 13 covers the data line 14 , the semiconductor layer 17 , and the drain electrode 18 , and is formed on the gate insulating film.

[0041] A plurality of pixel electrodes 15 are arranged two-dimensionally in the x direction and the y direction on the insulating film. Each pixel electrode is connected to the other end of the drain electrode via a contact hole provided in the insulating film.

[0042] The insulating layer 16 is formed on the insulating layer 13 so as to cover the pixel electrode 15. The counter electrode 19 is formed on the insulating layer 16. The counter electrode is provided with a plurality of slits 19s extending in the y-axis direction, for example.

[0043] A region surrounded by a pair of scanning lines 12 and a pair of data lines 14 constitutes a pixel, and each pixel includes a TFT as a switching element and a pixel electrode 15 .

[0044] As described above, the TFT substrate 10 has the same structure in the first region DR1 and the second region DR2. That is, the plurality of scanning lines 12, the plurality of data lines 14, the plurality of TFTs, and the plurality of pixel electrodes 15 are respectively located in the first region DR1 and the second region DR2 of the liquid crystal panel 50. In order to sufficiently ensure the amount of light incident on the imaging element, the first region DR1 is preferably configured with a size of 8 or more of each of the plurality of scanning lines 12, the plurality of data lines 14, the plurality of TFTs, and the plurality of pixel electrodes 15.

[0045] The arrangement pitch of these components is preferably substantially the same in the first region DR1 and the second region DR2. Specifically, it is preferred that the interval between adjacent scan lines 12 in the first region DR1 is in a range of more than 0.5 times and less than 1.5 times the interval between adjacent scan lines 12 in the second region DR2. In addition, the interval between adjacent data lines 14 in the first region DR1 is in a range of more than 0.5 times and less than 1.5 times the interval between adjacent data lines 14 in the second region DR2. In addition, it is preferred that the interval between adjacent TFTs in the first region DR1 is in a range of more than 0.5 times and less than 1.5 times the interval between adjacent TFTs in the second region DR2. In addition, the interval between adjacent pixel electrodes 15 in the first region DR1 is preferably in a range of more than 0.5 times and less than 1.5 times the interval between adjacent pixel electrodes 15 in the second region DR2. In addition, the area of ​​the pixel electrode 15 in the first region DR1 is preferably in a range of more than 0.5 times and less than 1.5 times the area of ​​the pixel electrode 15 in the second region DR2.

[0046] By satisfying such a relationship, even without performing special image processing in the first region DR1 and the second region DR2, a single still image or a moving image can be displayed in the first region DR1 and the second region DR2 as a whole.

[0047] The relative substrate 40 includes a substrate 41, a black matrix 42, and a color filter 43, and has a different structure in the first region DR1 than in the second region DR2. Specifically, the relative substrate 40 does not have a black matrix 42 in the first region, but has a black matrix in the second region. The relative substrate 40 also includes an outer coating 44 covering the color filter 43.

[0048] The substrate 41 is a substrate made of glass or the like that transmits visible light and infrared light. A black matrix 42 is formed on the second region DR2 of the substrate 41. The black matrix 42 is made of a material having a transmittance of visible light and infrared light of less than 30%, preferably less than 1%. The black matrix 42 is located at the boundary of each pixel and has a portion 42x extending in the x-axis direction and a portion 42y extending in the y-axis direction. As described above, the black matrix 42 is not formed on the first region DR1 of the substrate 41.

[0049] The color filter 43 includes a red filter 43R, a green filter 43G, and a blue filter 43B, and is disposed on the substrate 41. More specifically, any one of the red filter 43R, the blue filter 43B, and the green filter 43G is disposed in each pixel unit. Fig.11 As shown, the red filter 43R, the green filter 43G, and the blue filter 43B are repeatedly arranged along the x-axis direction.

[0050] On the other hand, filters of the same color are arranged in the y-axis direction. Fig. 9 As shown, in the y direction, the red filter 43R, the green filter 43G, and the blue filter 43B may be respectively continuous.

[0051] As described above, since the black matrix 42 is disposed in the second region DR2, the boundary between the color filter 43 of each pixel and the color filter of the adjacent pixel is located in the black matrix 42. Therefore, the black matrix 42 suppresses the color mixing caused by two colors selected from red, blue, and green between adjacent pixels. In the second region DR2, the color filters 43 between a pair of adjacent pixels may be in contact with each other or isolated by a value smaller than the width of the black matrix.

[0052] In contrast, in the first region DR1, the color filter of each pixel is preferably in contact with the color filter of an adjacent pixel. Thus, even if there is no black matrix at the boundary between the pixels in the first region DR1 where the black matrix 42 is not formed, the generation of light that does not pass through the color filter and is emitted can be suppressed, and a correct color image can be displayed.

[0053] Furthermore, when the camera device with a display function of the present embodiment is used in a dashboard of a car, the driver looks at the liquid crystal panel 50 from the front. Therefore, compared with the case where the liquid crystal panel is viewed from an oblique direction, color mixing is less likely to occur between pixels, and even if a black matrix is ​​not configured in the first region DR1, the display quality of the image displayed in the first region DR1 and the second region DR2 is unlikely to differ greatly.

[0054] In this embodiment, the color filter of each pixel does not overlap with a part of the color filter of the adjacent pixel. However, due to reasons such as errors during manufacturing, the color filters of a part of the pixels may overlap with a part of the color filters of the adjacent pixels in the first region DR1. The structure of actively utilizing the overlapping of the color filters is described as the following embodiment.

[0055] The backlight 70 is fixed at a predetermined position relative to the liquid crystal panel 50 by a frame 85. In the present embodiment, the backlight 70 is of a direct-down type, so that white light is incident on the liquid crystal panel 50 via the optical structure 80. The backlight 70 includes: a base 71 having a bottom 71a opposite to the liquid crystal panel; and a plurality of display light-emitting elements 72 arranged at the bottom 71a. The plurality of display light-emitting elements 72 are mounted on a mounting substrate 74 arranged on the inner side of the bottom 71a. The plurality of display light-emitting elements 72 can also be driven per element or per area by local dimming. The display light-emitting element 72, for example, emits white light. Alternatively, the display light-emitting element 72 can also emit blue light or ultraviolet light. In this case, the backlight 70 can also be constructed to also include a wavelength conversion component covering the display light-emitting element 72, or a wavelength conversion sheet arranged above a plurality of display light-emitting elements 72, by converting the light emitted from the display light-emitting element 72 into yellow light, or into white light, which is emitted from the backlight 70 and incident on the optical structure 80.

[0056] The backlight 70 further includes at least one infrared light emitting element 73 mounted on a mounting substrate 74 of the bottom 71a. The infrared light emitting element 73 emits infrared light, which passes through the liquid crystal panel 50 and illuminates the subject (driver).

[0057] The backlight 70 may also include a partition structure 75 disposed on the mounting substrate 74. The partition structure 75 has a plurality of reflection surfaces 75r, for example, dividing the bottom 71a into regions including one or more display light emitting elements 72. The reflection surfaces 75r suppress the lateral spread of light emitted from the display light emitting elements 72, thereby increasing the brightness of light emitted from the backlight 70. In addition, when the backlight 70 is driven by local dimming, the contrast near the boundary between the lit section and the extinguished section is increased.

[0058] At least one of the reflection surfaces 75r is preferably located between a condenser lens 63 and an infrared light emitting element 73 of the infrared camera 60 described later. This can prevent the infrared light emitted from the infrared light emitting element 73 from directly entering the infrared camera 60.

[0059] The infrared camera 60 includes an imaging element 61, and is arranged on the liquid crystal panel 50 in such a manner that the imaging element 61 is located on the optical path LP of light that passes through the first region DR1 of the liquid crystal panel 50 from the outside. In the present embodiment, the optical path LP is not bent by a reflector or the like but is formed in a straight line. Therefore, the infrared camera 60 is arranged on the back side of the liquid crystal panel 50.

[0060] Specifically, the infrared camera 60 has a circuit board 62, which has a driving circuit for the image pickup element 61, and the image pickup element 61 is mounted on the circuit board 62. The base 71 of the backlight 70 has a base through hole 71h in a region overlapping with the first region DR1 of the bottom 71a, and the circuit board 62 is arranged outside the base 71 in such a manner that the image pickup element 61 is located in the base through hole 71h. By arranging the circuit board 62 outside the base 71, it is possible to suppress an increase in the height of the base 71, and to suppress a decrease in the in-plane uniformity of the backlight.

[0061] The infrared camera 60 preferably further includes a condenser lens 63, an infrared transmission filter 64, and a lens barrel 65. The lens barrel 65 surrounds the image pickup element 61 and is mounted on the circuit board 62 and inserted into the base through hole 71h. The condenser lens is supported at one end of the lens barrel 65, and the infrared transmission filter 64 is supported by the lens barrel 65 between the condenser lens 63 and the image pickup element 61. The condenser lens 63 condenses light from the outside of the transmission optical path PL onto the image pickup element 61.

[0062] By inserting the lens barrel 65 into the chassis through hole 71h, the condenser lens 63 is disposed between the bottom 71a of the chassis 71 and the liquid crystal panel 50. According to this configuration, the condenser lens 63 can be brought close to the liquid crystal panel 50, and the first region DR1 can be reduced in size.

[0063] The area of ​​the first region DR1 is preferably equal to or larger than the opening area of ​​the condenser lens 63. In addition, the opening area of ​​the optical structure through hole 80h is preferably equal to or larger than the opening area of ​​the condenser lens 63. Thus, the lack of field of view of the infrared camera 60 can be suppressed.

[0064] Furthermore, it is preferred that the opening area of ​​the optical structure through hole 80h is equal to or smaller than the area of ​​the first region DR1. Furthermore, it is more preferred that the opening area of ​​the optical structure through hole 80h is equal to or larger than the opening area of ​​the condenser lens 63, and the opening area of ​​the optical structure through hole 80h is equal to or smaller than the area of ​​the first region DR1. By satisfying such a relationship, the lack of field of view of the infrared camera 60 can be further suppressed.

[0065] The infrared transmission filter 64 absorbs visible light and selectively transmits infrared light. For example, the infrared transmission filter 64 has a spectral characteristic in which the transmittance of a wavelength of 920 nm is higher than the transmittance of a wavelength of 550 nm. By configuring the infrared transmission filter 64 having the above spectral characteristic between the condenser lens 63 and the imaging element 61, it is possible to effectively suppress stray light of visible light and obtain a clearer image of the driver obtained by illumination with infrared light.

[0066] The backlight 70 may further include a cylindrical light shielding body 76 disposed on the chassis 71 so as to surround the optical path LP and shield infrared rays. When the infrared camera 60 includes the lens barrel 65 , the light shielding body 76 preferably surrounds the lens barrel 65 .

[0067] Preferably, the light shield 76 transmits visible light and absorbs infrared light. For example, it is preferred that the light shield 76 has a spectral characteristic in which the transmittance at a wavelength of 920 nm is equal to or smaller than the transmittance at a wavelength of 550 nm. By providing the light shield 76, it is possible to suppress the infrared light emitted from the infrared light emitting element 73 of the backlight 70 from directly entering the infrared camera 60, and it is possible to suppress blown-out highlights, so that the image of the driver can be obtained more clearly. In addition, by transmitting visible light, even if the light shield 76 is provided, the light emitted from the display light emitting element 72 can be made to enter the optical path LP. Therefore, it is also possible to make the light of the backlight 70 enter the first area of ​​the liquid crystal panel 50, and it is possible to suppress the reduction in the brightness of the liquid crystal panel 50 in the first area. That is, when viewing the image of the display device from the outside, the difference in display quality between the first area DR1 and the second area DR2 can be suppressed.

[0068] In the imaging device with display function of the present embodiment, the liquid crystal panel is driven by the FFS method. Therefore, the liquid crystal panel 50 operates in a normally black state.

[0069] According to the camera device with display function of this embodiment, since there is no black matrix in the first area, the influence of the diffraction image of the image can be suppressed, and a clear infrared image can be obtained. In addition, the second area is arranged in a manner of surrounding the first area, and the image can be displayed in the first area and the second area. That is, since the infrared camera can be arranged on the back of the liquid crystal panel, it is difficult for the driver to visually confirm the area where the camera is arranged, that is, the camera hole. Therefore, it is possible to suppress the driver from recognizing the camera hole and feeling a psychological burden while driving, and it is possible to monitor the driver's state while providing the driver with a comfortable driving environment.

[0070] In addition, in the camera device with display function of this embodiment, the liquid crystal panel is driven in FFS mode. Therefore, the liquid crystal panel operates in normally black. That is, the portion where the voltage for driving the liquid crystal is not applied between pixels is displayed in black. Therefore, even if the black matrix is ​​not formed in the first area, the influence of light leakage in the black display can be reduced.

[0071] In addition, in the present embodiment, the camera device with display function has a black matrix in the second region DR2, but the second region DR2 may not have a black matrix. In this case, the counter substrate of the camera device with display function also has a black matrix in the second region. Figure 7In other words, the counter substrate has the same structure in the first region DR1 and the second region DR2.

[0072] In this case, if Figure 6 As shown, the first region DR1' is defined by the region overlapping with the focusing lens 63 of the infrared camera 60 in a plan view. The first region DR1' is surrounded by the second region DR2'. The second region DR2' is a region outside the first region DR1' in the display region DR, and the outer edge of the first region DR1' is connected to the inner edge of the second region DR2'. The first region DR1' and the second region DR2' are regions defined on the front face 50a, and are also continuously defined in the thickness direction of the liquid crystal panel 50. In addition, in order to fully ensure the amount of light incident on the imaging element, the first region DR1' is preferably configured with a size of 8 or more of each of the plurality of scanning lines 12, the plurality of data lines 14, the plurality of TFTs, and the plurality of pixel electrodes 15.

[0073] In this case, the area of ​​the first region DR1' is equal to the opening area of ​​the condenser lens 63. In addition, it is preferred that the opening area of ​​the optical structure through hole 80h is equal to or larger than the opening area of ​​the condenser lens 63. Thus, it is possible to suppress the lack of field of view of the infrared camera 60. In addition, it is preferred that the opening area of ​​the optical structure through hole 80h is equal to or larger than the area of ​​the first region DR1'.

[0074] Even when the second region DR2' does not have a black matrix, as described above, the influence of the diffraction image of the image can be suppressed, and a clear infrared image can be obtained. In addition, the camera hole is difficult to visually confirm. In particular, according to this method, there is no difference in the structure of the liquid crystal panel 50 between the first region DR1' and the second region DR2', so it is more difficult to visually confirm the camera hole.

[0075] In addition, since the liquid crystal panel does not have a black matrix in the entire display area DR, the first area DR1' can be set at an arbitrary position. In other words, even if the imaging element detects light that has passed through an arbitrary position of the display area DR, a clear image can be obtained. Therefore, the number or position of the infrared cameras can be arbitrarily changed using the same liquid crystal panel.

[0076] The color filter preferably has a color filter of each pixel in contact with a color filter of an adjacent pixel in an area of ​​more than 90% of the display area DR, which includes the entire first area DR1 and at least a portion of the second area DR2. Since a black matrix is ​​not formed in the first area DR1 and the second area DR2, by satisfying such a feature, light leakage of the non-transmitting color filter is suppressed, and the camera device with a display function can display a high-quality color image.

[0077] (Second Embodiment) Fig.12 is a schematic cross-sectional view of the first region DR1 of the camera device with display function in the x-axis direction, Figures 13 to 15 Each of them is a schematic cross-sectional view in the y-axis direction of a first region of a pixel provided with a red filter, a green filter, and a blue filter of an opposing substrate of a liquid crystal panel.

[0078] The imaging device with a display function of the present embodiment is different from the first embodiment in that two or more different color filters overlap in a region adjacent to a boundary between adjacent pixels of each pixel in the first region DR1.

[0079] For example, consider a case where three color filters are formed, the green filter 43G is formed first, the red filter 43R is formed, and the blue filter 43B is formed last. The boundary extending along the y-axis direction of a pair of adjacent pixels can be a combination of red-green, green-blue, and blue-red color filters.

[0080] At the boundary between the red filter and the green filter, the end of the green filter 43G is connected to the end of the red filter 43R, and the blue filter 43B is overlapped thereon. At the boundary between the green filter and the blue filter, the end of the blue filter 43B is overlapped on the end of the green filter 43G. At the boundary between the blue filter and the red filter, the end of the blue filter 43B is overlapped on the end of the red filter 43R.

[0081] On the other hand, color filters of the same color are arranged in pixels adjacent to each other in the y-axis direction. Therefore, color filters of different colors are arranged overlappingly. Fig.13 As shown, the red filter 43R has a boundary extending in the x-axis direction between adjacent pixels in the y-axis direction, and the striped blue filter 43B extending in the x-axis direction is located on the red filter 43R, so that two or more different color filters overlap.

[0082] In addition, if Fig.14As shown, at the boundary extending in the x-axis direction between pixels adjacent to the green filter 43G in the y-axis direction, the blue filter 43B extending in the x-axis direction is located on the green filter 43G, and two or more different color filters overlap. Fig.15 As shown, at the boundary between pixels adjacent to the blue filter 43B in the y-axis direction extending in the x-axis direction, the two different color filters overlap by positioning the striped red filter 43R extending in the x-axis direction below the blue filter 43B.

[0083] Regarding the overlapping width of two different color filters, when the overlapping width in the x-axis direction is set to Wx and the overlapping width in the y-axis direction is set to Wy, the pixel pitch in the x-axis direction is set to px and the pixel pitch in the y-axis direction is set to py, preferably satisfying The relationship is 0.01×px≤Wx≤0.2px0.01×py≤Wy≤0.2py.

[0084] By having such a structure, the color filters of adjacent pixels can contact each other more reliably. Therefore, the possibility of gaps caused by the color filters not contacting each other due to manufacturing errors when forming the color filters can be further reduced. In addition, by overlapping the boundaries of the pixels of two or more color filters, an area is formed at the boundaries of adjacent pixels that does not allow light of any color formed in the color filters of each pixel to pass through. Therefore, the mixing of light between adjacent pixels can be suppressed, and a clearer image can be displayed. In particular, in oblique observations in the x-axis direction, a high effect of suppressing the mixing of light between adjacent pixels can be obtained.

[0085] In addition, one of the two color filters overlapping between adjacent pixels is preferably a blue filter, because the blue filter has low transmittance and low reflectance, and tends to prefer blue as the reflected color.

[0086] The number of color filters overlapping at the boundary of adjacent pixels in the first region DR1 is not limited to 2, and may be 3 or more. That is, in the image pickup device with display function of this embodiment, the area of ​​each pixel in the first region DR1 that is adjacent to the boundary of the adjacent pixels may be different from the first embodiment in that 3 or more different color filters overlap.

[0087] Fig.16 is a schematic cross-sectional view of the first region DR1 of the camera device with display function in the x-axis direction, Figures 17 to 19 Each of them is a schematic cross-sectional view in the y-axis direction of a first region of a pixel where a red filter, a green filter, and a blue filter are arranged on a counter substrate of a liquid crystal panel.

[0088] In the pixels arranged along the x-axis direction, at the boundary between the red filter and the green filter, the end of the red filter 43R overlaps the end of the green filter 43G. Furthermore, a strip-shaped blue filter 43B extending in the y-axis direction is overlapped thereon. At the boundary between the green filter and the blue filter, the red filter 43R extending in the y-axis direction is overlapped on the end of the green filter 43G, and the blue filter 43B is overlapped thereon. At the boundary between the blue filter and the red filter, the end of the red filter 43R is overlapped on the green filter 43G extending in the y-axis direction, and the end of the blue filter 43B overlaps the end of the red filter 43R.

[0089] On the other hand, color filters of the same color are arranged in pixels adjacent to each other in the y-axis direction. Therefore, color filters of different colors extending in the x-axis direction are arranged in an overlapping manner. Fig.17 As shown, at the boundary extending in the x-axis direction between pixels adjacent to the red filter 43R in the y-axis direction, a red filter 43R is arranged on a strip-shaped green filter 43G extending in the x-axis direction, and a blue filter 43B extending in the x-axis direction is overlapped thereon.

[0090] In addition, if Fig.18 As shown, at the boundary between the pixels adjacent to the green filter 43G in the y-axis direction and extending in the x-axis direction, a stripe-shaped red filter 43R extending in the x-axis direction is overlapped on the green filter 43G, and a stripe-shaped blue filter 43B extending in the x-axis direction is further overlapped thereon. Fig.19 As shown, at the boundary extending in the x-axis direction between pixels adjacent to the blue filter 43B in the y-axis direction, a striped red filter 43R extending in the x-axis direction is overlapped on a striped green filter 43G extending in the x-axis direction, and a blue filter 43B is further arranged thereon. The preferred values ​​of the overlapping widths of the three different color filters are as described above.

[0091] In this way, three or more different color filters overlap at the boundaries of adjacent pixels, thereby forming an area where no light of any color is transmitted at the boundaries of adjacent pixels. Therefore, it is possible to suppress the mixing of light between adjacent pixels and display a clearer image. In particular, in observations obliquely observed from the x-axis direction, a high effect of suppressing the mixing of light between adjacent pixels can be obtained.

[0092] In addition, in the present embodiment, in the region adjacent to the boundary of the adjacent pixels of the first region DR1, two or more different color filters overlap, and in the second region DR2, a black matrix 42 is formed in the same manner as in the first embodiment. However, as described in the first embodiment, in the second region, the counter substrate may not have a black matrix, and in the region adjacent to the boundary of the adjacent pixels, two or more different color filters overlap. Thus, in the first region DR1 and the second region DR2, the structure of each pixel is the same, and in the first region DR1 and the second region DR2, an image with a less obvious display quality difference can be displayed.

[0093] In addition, the order in which the color filters are overlapped depends on the order in which the color filters are formed, and the camera device with a display function disclosed in the present invention is not limited to the specific structure described in this embodiment. For example, when the color filters are formed on the opposite substrate in the order of the red filter 43R, the blue filter 43B, and the green filter 43G, in the structure described above, the green filter 43G can be replaced by the red filter 43R, the red filter 43R can be replaced by the blue filter 43B, and the blue filter 43B can be replaced by the green filter 43G.

[0094] (Third Embodiment) Fig. 20 2 is a schematic cross-sectional view of the imaging device with display function according to the present embodiment. The imaging device with display function is different from the first embodiment in that it includes an edge-type backlight 70'.

[0095] The backlight 70' includes a chassis 71, a light guide plate 77, a display light emitting element, and an infrared light emitting element. The light guide plate 77 is disposed at the bottom 71a of the chassis 71. The backlight 70' may further include a reflection sheet 78 between the bottom 71a of the chassis 71 and the light guide plate 77.

[0096] The display light emitting element 72 and the infrared light emitting element 73 are mounted on the mounting substrate 74', and are arranged in the base 71 in a manner opposite to the side surface 77c of the light guide plate 77. In the figure, the display light emitting element 72 and the infrared light emitting element 73 are shown one by one, but the display light emitting element 72 and the infrared light emitting element 73 are arranged on the side surface 77c of the light guide plate 77 according to the required brightness.

[0097] The light guide plate 77 has a through hole 77h at a position overlapping with the first region DR1 in a plan view, and the lens barrel 65 of the infrared camera 60 is inserted into the through hole 77h. The light shielding body 76 is also disposed in the through hole 77h.

[0098] In the backlight 70', the infrared light emitting element 73 is disposed on the side surface 77c of the light guide plate 77, similarly to the display light emitting element 72. Therefore, the infrared light emitting element 73 can emit light from the display region DR and can be used as illumination light for imaging.

[0099] Therefore, even if the backlight 70 ′ is an edge type, as described in the first embodiment, the black matrix is ​​not included in the first region, so that the influence of the diffraction image of the image is suppressed and a clear infrared image can be obtained.

[0100] In addition, the infrared light emitting element 73 is not limited to being disposed at a position corresponding to the side surface 77c of the light guide plate, but may also be disposed opposite to the main surface. Fig.21 As shown, the infrared light emitting element 73 is mounted on the circuit board 62 of the infrared camera 60. In a plan view, a through hole 78h' and a through hole 71h' are formed in the reflective sheet 78 and the bottom 71a of the base 71, respectively, at a position overlapping with the infrared light emitting element 73. The through hole 78h' and the through hole 71h' are provided at a position overlapping with the infrared light emitting element 73 in a plan view, and at a position overlapping with the second region DR2 of the liquid crystal panel 50.

[0101] With such a configuration, the infrared light emitting element 73 can be made to face the main surface of the light guide plate 77, and infrared light can be emitted to the outside from the back side of the liquid crystal panel 50. The illumination light for photographing the driver only needs to be emitted from the vicinity of the first region DR1. Therefore, even if the backlight is an edge type, by arranging the infrared light emitting element 73 in a direct-down position, the number of infrared light emitting elements 73 used for illumination can be reduced.

[0102] (Fourth Embodiment) Fig. 22 1 is an exploded perspective view of main components of the liquid crystal panel of the imaging device with display function of this embodiment. The liquid crystal panel of the imaging device with display function of this embodiment has a different structure from that of the liquid crystal panel of the first embodiment.

[0103] Specifically, if Fig. 22As shown, the plurality of pixel electrodes 15 include a plurality of first pixel electrodes 15A and a plurality of second pixel electrodes 15B. The first pixel electrodes 15A and the second pixel electrodes 15B are arranged alternately in the x-axis direction. That is, a first pixel electrode 15A of the plurality of first pixel electrodes 15A and a second pixel electrode 15B of the plurality of second pixel electrodes 15B are adjacent in the x-axis direction. In addition, the adjacent first pixel electrodes 15'A and the second pixel electrodes 15'B share a data line 14. From another point of view, since the pixel electrodes 15 are arranged two-dimensionally in the x-direction and the y-direction, a pair of adjacent first pixel electrodes 15A and a second pixel electrode 15B are arranged between a pair of adjacent data lines 14 in the x-axis direction.

[0104] In addition, the plurality of scan lines 12 include a plurality of first scan lines 12A and a plurality of second scan lines 12B. The plurality of scan lines 12 are each associated with a pixel electrode 15 arranged in the x-axis direction, the first scan line 12A is associated with the first pixel electrode 15A, and the second scan line 12B is associated with the second pixel electrode 15B. The first scan line 12A of one of the plurality of scan lines 12 is arranged at the upper end of the pixel electrode 15 arranged in the x-axis direction, and the plurality of second scan lines 12B are arranged at the lower end. From another viewpoint, since the pixel electrode 15 is two-dimensionally arranged in the x-direction and the y-direction, one of the plurality of first scan lines 12A and one of the plurality of second scan lines 12B are arranged between a pair of pixel electrodes 15 adjacent in the y-axis direction among the plurality of pixel electrodes 15.

[0105] The first pixel electrode 15'A and the second pixel electrode 15'B disposed on both sides of one data line 14 are scanned by different scanning lines. Specifically, the first pixel electrode 15'A is scanned by the first scanning line 12A via TFT-A, and the second pixel electrode 15'B is scanned by the second scanning line 12B via TFT-B.

[0106] Each data line 14 is located between a pair of first pixel electrodes and second pixel electrodes (first pixel electrode 15'A and second pixel electrode 15'B) arranged along the x-axis direction, and drives the two pixel electrodes. In other words, one data line 14 is shared by two pixels (pixel electrodes 15'A and 15'B) sandwiched therebetween. Since the two pixels are different pixels, different data signals need to be provided at different timings. Therefore, the total number of scan lines is doubled. In other words, in order to operate pixels (pixel electrodes 15'A and 15'B) adjacent to each other in the x-axis direction, two scan lines 12A and 12B are required. In addition, since one data line is shared by two pixels, the writing time is also approximately 1 / 2. However, the total number of data lines is 1 / 2 compared to a normal liquid crystal panel. In other words, the data lines 14 are arranged at a pitch that is twice the pixel pitch in the x-axis direction.

[0107] As described above, when an image is acquired by infrared light through a black matrix, multiple images in the x-axis direction are significantly detected according to the shape of the pixels. This is because the interval between diffraction images is inversely proportional to the interval d between the slits, and the smaller the interval between the black matrix, the larger the interval between the diffraction images.

[0108] According to the camera device with display function disclosed in the present invention, since the black matrix is ​​not formed in the first area of ​​the liquid crystal panel, the influence of the diffraction image caused by the black matrix is ​​reduced. However, when the liquid crystal panel becomes more high-precision and the pixel pitch becomes smaller, in addition to the black matrix, the data line composed of metal may also become the cause of the diffraction image. In this case, by adopting the structure of this embodiment, the spacing of the data line is made twice the pixel spacing, so that the slit spacing can be made twice to suppress the spacing of the diffraction image from becoming larger.

[0109] That is, according to the present embodiment, even when a high-definition liquid crystal panel is used, it is possible to suppress the increase in the interval between diffraction images and the blurring of images.

[0110] (Fifth Embodiment) Fig.23 and Fig.24 Schematic cross-sectional view and schematic plan view of the main parts of the liquid crystal panel of the camera device with display function of the present embodiment, respectively. The camera device with display function of the present embodiment has an optical structure 180 of a different shape from that of the first embodiment. In addition, the camera device with display function of the present embodiment does not have a light shielding body, and the liquid crystal panel does not have a black matrix in the entire display area DR. As described in the first embodiment, the first area DR1' is defined by the area overlapping with the focusing lens 63 of the infrared camera 60 in a plan view, and the liquid crystal panel has a color filter in the first area DR1' and does not have a black matrix. The first area DR1' is located on the optical path of the light incident on the imaging element 61 of the infrared camera 60.

[0111] Specifically, the camera device with a display function of this embodiment includes: a liquid crystal panel 50, which has a display area DR; an infrared camera 60, which has a focusing lens 63, an imaging element 61 and a lens barrel 65, which supports the focusing lens 63 with a specified gap relative to the imaging element 61; a backlight 70, which is arranged on the back side of the liquid crystal panel 50; and an optical structure 180, which is arranged between the liquid crystal panel 50 and the backlight 70.

[0112] As described above, the optical structure 180 includes at least one optical sheet having an optical function. Fig.23As shown, the optical structure 180 includes a brightness enhancement film 81 and a diffuser 182. The diffuser 182 has a first main surface 182a and a second main surface 182b. The first main surface 182a is located on the bottom 71a side of the backlight 70, and the second main surface 182b is located on the liquid crystal panel 50 side.

[0113] The diffuser 182 has a recess 182d disposed on the first main surface 182a and a through hole 182h located between the bottom surface of the recess 182d and the second main surface 182b. The opening area Sh of the through hole 182h is smaller than the area Sd of the bottom surface of the recess 182d. In addition, it is preferred that the depth Dh of the through hole 182h is smaller (shallower) than the depth Dd of the recess 182d. When viewed from above, the through hole 182h of the diffuser 182 overlaps with the lens barrel 65. And, when viewed from above, the area of ​​the through hole 182h is smaller than the area of ​​the lens barrel 65. That is, preferably, when viewed from above, the entire through hole 182h overlaps with the lens barrel 65. By having such a structure of the diffuser 182, especially the depth Dh of the through hole 182h and the depth Dd of the recess 182d satisfying the above relationship, the infrared rays incident on the focusing lens 63 from an oblique direction in the through hole 182h are prevented from being blocked by the diffuser 182, thereby preventing the viewing angle of the infrared camera from being narrowed.

[0114] At least a portion of the diffuser 182 is disposed in the base 71 of the backlight 70. In the present embodiment, the diffuser 182 is entirely disposed in the base 71. That is, the diffuser 182 is close to the bottom 71a of the base 71. In addition, at least a portion of the lens barrel 65 is located in the recess 182d of the diffuser 182. In particular, the focusing lens 63 supported by the lens barrel 65 is preferably located in the recess 182d.

[0115] The light incident on the diffuser 182 from the display light emitting element 72 of the backlight 70 is repeatedly diffused in the diffuser 182, and as shown by the arrow, it is emitted from the second main surface 182b while diffusing. As mentioned above, when viewed from above, the through hole 182h of the diffuser 182 overlaps with the lens barrel 65, and the area of ​​the through hole 182h is smaller than the area of ​​the lens barrel 65, so even in the top view, in the area where the lens barrel 65 overlaps with the diffuser 182, the light is vertically emitted from the second main surface 182b of the diffuser 182. In addition, the light emitted from the second main surface 182b also advances in an oblique direction and also expands above the through hole 182h. That is, in the diffuser 182, the light is guided to the boundary portion with the through hole 182h, and the light diffused near the boundary and emitted in an oblique direction transmits the liquid crystal panel 50 and reaches the observer. This can suppress a decrease in brightness of a region overlapping with the lens barrel 65 in the display region DR in a plan view, and can improve uniformity of light emitted from the backlight 70 in the display region DR.

[0116] In particular, according to this embodiment, the area of ​​the through hole 182h can be made smaller than the area of ​​the lens barrel 65, and the area where light is vertically emitted from the second main surface 182b can be increased in the lens barrel 65 in a top view. Therefore, according to this embodiment, regardless of the cross-sectional area of ​​the lens barrel 65 and the focusing lens diameter, the opening of the through hole 182h can be reduced, thereby reducing the area where the brightness in the display area DR is reduced.

[0117] In addition, by forming the recessed portion 182d in the diffuser 182, it is easy to align the lens barrel 65 of the condenser lens 63 with the diffuser 182, and even if the opening area of ​​the through hole 182h is small, positional deviation can be suppressed. In particular, in the case where the alignment accuracy of the through hole 182h and the lens barrel 65 is poor, in order to ensure the amount of light required for photography, it is necessary to increase the opening of the through hole 182h, but according to this embodiment, such a design may not be performed. Therefore, the opening area of ​​the through hole 182h can be further reduced, and the uniformity of the brightness in the display area DR can be improved.

[0118] In addition, for example, in the case where the diffuser 182 having the recess 182d and the through hole 182h is formed by two parts, an air layer interface is generated between the two parts in the diffuser 182. Since light is reflected at the air layer interface, the transmittance of light from the first main surface 182a to the second main surface 182b is reduced, or the distribution of light near the through hole 182h and the recess 182d may become uneven. In this regard, by forming the diffuser 182 with a single part, it is possible to suppress such a reduction in the transmittance of light and the uneven distribution of light, thereby improving the uniformity of brightness in the display area DR. In addition, the diffuser 182 is a single part, so that it is easy to assemble.

[0119] In this embodiment, the infrared light emitting element 73 does not transmit the liquid crystal panel 50, but directly irradiates the infrared light to the subject. Therefore, the camera device with display function of this embodiment includes a frame 185. The frame 185 has a holding portion 185d in a non-display area NR located outside the display area DR, and a plurality of infrared light emitting elements 73 are arranged in the holding portion 185d. In addition, similarly to the first embodiment, the frame 185 holds the backlight 70 at a predetermined position relative to the liquid crystal panel 50.

[0120] By having such a configuration, the infrared light emitting element 73 is arranged in the non-display region NR, and the infrared light emitted from the infrared light emitting element 73 for imaging does not transmit the liquid crystal panel 50, but directly reaches the subject. Therefore, compared with the case where the infrared light emitting element 73 is arranged on the back side of the liquid crystal panel 50 and in the display region DR, it is possible to suppress the infrared light from becoming stray light in the backlight 70 and entering the imaging element 61 of the infrared camera 60. Therefore, a clear image can be obtained. In particular, even if the light shielding body 76 is not provided, such an effect can be achieved.

[0121] Fig.25 1 is a schematic cross-sectional view of the main part of another example of the camera device with display function of the present embodiment. The diffuser 182 of the optical structure 180 includes a first diffuser plate 182A and a second diffuser plate 182B. The first diffuser plate 182A and the second diffuser plate 182B respectively have a first through hole 182Ah and a second through hole 182Bh. The first through hole 182Ah and the second through hole 182Bh respectively have a simple cylindrical shape, for example, and the opening area of ​​the second through hole 182Bh is larger than the opening area of ​​the first through hole 182Ah.

[0122] The first diffuser plate 182A and the second diffuser plate 182B are stacked such that the axis of the first through hole 182Ah coincides with the axis of the second through hole 182Bh. The second diffuser plate 182B is closer to the bottom 71a of the backlight 70 than the first diffuser plate 182A.

[0123] By forming the diffuser from two plate-like components, the recess and through hole of the diffuser 182 can be formed more simply, and the manufacturing cost of the diffuser 182 can be reduced. In addition, since the diffuser 182 is formed from two components, the optical properties of the first diffuser plate 182A and the second diffuser plate 182B can be made different, and the optical function of the diffuser as a whole can be adjusted. For example, by reducing the haze value of the second diffuser plate 182B, the material cost can be reduced.

[0124] In the present embodiment, the infrared light emitting element 73 is disposed in the non-display region NR. However, the infrared light emitting element 73 may be disposed in the backlight 70 as in the first embodiment. Fig.26 1 is a schematic plan view showing an example of arrangement of a plurality of display light emitting elements 72 and a plurality of infrared light emitting elements 73 in the backlight 70 .

[0125] A plurality of display light emitting elements 72 and a plurality of infrared light emitting elements 73 are arranged at the bottom 71a of the base 71. Specifically, for example, a plurality of display light emitting elements 72 are arranged at equal intervals in the x-axis direction and the y-axis direction. A plurality of infrared light emitting elements 73 are arranged, for example, between four adjacent display light emitting elements 72. In the present embodiment, a plurality of infrared light emitting elements 73 are arranged at equal intervals in the x-axis direction and the y-axis direction. The arrangement pitch of the infrared light emitting elements 73 is larger than the arrangement pitch of the display light emitting elements 72. For example, in the present embodiment, the arrangement pitch of the infrared light emitting elements 73 is four times the arrangement pitch of the display light emitting elements 72. In addition, in the present embodiment, an infrared light emitting element 73 is arranged at the center of four adjacent infrared light emitting elements 73. In addition, the lens barrel 65 is a display light emitting element 72 arranged at equal intervals, and is arranged between four adjacent display light emitting elements 72.

[0126] According to this configuration, since the infrared light emitting element is arranged in the backlight, the frame area can be narrowed. In addition, by arranging a plurality of infrared light emitting elements 73 at equal intervals, infrared light for video recording can be uniformly emitted. In addition, by making the arrangement pitch of the infrared light emitting element larger than the arrangement pitch of the display light emitting element, the infrared light emitting element can be arranged separately from the condenser lens 63 of the infrared camera 60. Therefore, it is possible to suppress the infrared light emitted from the infrared light emitting element 73 from directly entering the infrared camera 60 as stray light. In addition, the arrangement pitch of the display light emitting element 72 around the lens barrel 65 does not change and remains constant, so that a uniform display with little brightness reduction can also be obtained around the lens barrel 65.

[0127] (Sixth Embodiment) Fig. 27 2 is a schematic cross-sectional view of a main part of the imaging device with a display function of this embodiment. The imaging device with a display function of this embodiment is different from the fifth embodiment in that an optical structure 280 further includes a second diffuser 84 .

[0128] The second diffuser 84 is disposed, for example, between the liquid crystal panel and the brightness enhancement film 81 or the diffuser 182 of the optical structure 280. The gap Sp1 between the second diffuser 84 and the liquid crystal panel 50 is preferably smaller than the gap Sp2 between the second diffuser 84 and the diffuser 182. The second diffuser 84 overlaps the entire first region DR1' and the second region DR2' in a plan view.

[0129] In the second diffuser 84, the haze value for visible light is larger than the haze value for infrared light. In addition, in the second diffuser 84, the straight transmittance for visible light is smaller than the straight transmittance for infrared light. That is, the second diffuser 84 can diffuse visible light further than infrared light. The second diffuser 84 having such optical characteristics can be composed of a film, a substrate, etc. sandwiching a polymer dispersed liquid crystal (PDLC).

[0130] The difference between this embodiment and the fifth embodiment is that the visible light from the backlight diffused by the diffuser 182 is diffused again by the second diffuser 84 before it is incident on the liquid crystal panel 50. In the fifth embodiment, the visible light extending above the through hole 182h is light traveling in an oblique direction, and includes light traveling in a vertical direction in addition to light traveling in an oblique direction in the area outside the through hole 182h. In this embodiment, the light traveling in an oblique direction above the through hole 182h is incident on the second diffuser 84 and diffused again, and is also emitted from the second diffuser 84 in the vertical direction and the oblique direction. Of course, in the area other than the area above the through hole 182h, the light incident on the second diffuser 84 is also diffused again, and is also emitted from the second diffuser 84 in the vertical direction and the oblique direction. In this way, by configuring the second diffuser 84, the diffusion state of the light emitted from the second diffuser 84 is no different between the area above the through hole 182h and the area outside it.

[0131] According to this configuration, visible light from the backlight is further scattered, and the boundary between the first region DR1' and the second region DR2' becomes inconspicuous. In particular, when the liquid crystal panel 50 performs white display or high brightness display, the reduction in brightness in the first region DR1' is suppressed, and the first region DR1' becomes inconspicuous. On the other hand, since the haze value is small relative to infrared rays, infrared images can be captured with good resolution.

[0132] In addition, the gap Sp2 is larger than the gap Sp1, as shown in FIG. Fig.23 As described above, more light reaches above the through hole 182h, which can suppress a decrease in brightness in the first region DR1' and a difference in the diffusion state of light, and improve the uniformity of light emitted from the backlight 70 in the display region DR.

[0133] (Seventh Embodiment) In the camera device with display function of the first to sixth embodiments, the backlight 70 is controlled as follows: it is always on as a general backlight of a liquid crystal panel, or it is periodically turned off by inserting a black image display through a dummy pulse drive. The timing of the operation of the infrared camera 60 and the infrared light emitting element 73 for image pickup is not particularly limited. For example, the infrared light emitting element 73 may be always on and the infrared camera 60 may always take an image, or the infrared light emitting element 73 may be always on and the infrared camera 60 may take an image only during a specified period in one frame period.

[0134] On the other hand, in the imaging device with a display function of the present embodiment, the timing of lighting the backlight 70 is linked to the timing of lighting the infrared light emitting element 73 . Fig.28 1 is a timing chart showing the operation timing of each part of the imaging device with display function according to the present embodiment. Fig.28 In the figure, (a) represents the timing of scanning of the liquid crystal panel 50, (b) represents the transmittance of the liquid crystal panel, and (c) represents the timing of lighting the backlight 70. In addition, (d) represents the timing of lighting the infrared light emitting element 73, and (e) represents the timing of imaging by the infrared camera 60. (a) represents the position where the scanning line (gate line) is turned on (ON) during one scanning period of the liquid crystal panel 50, and (b) represents the transmittance of the liquid crystal panel at the timing represented by the circular mark of (a) when the liquid crystal panel 50 is displayed as a uniform intermediate color as a whole. In the figure, the shades of black and white represent the difference in transmittance, white represents high transmittance, and black represents low transmittance. (c) and (d) represent the timing of turning on and lighting the backlight 70 and the infrared light emitting element 73 at a high level. (e) represents the timing of imaging by the infrared camera 60 at a high level. In each program, the horizontal axis represents the passage of time.

[0135] Generally, in a liquid crystal panel, during one scanning period, scanning lines arranged in the column direction (vertical direction) are selected from the top to the bottom, and a voltage is applied to the selected scanning line. As a result, the switching element of the pixel connected to the selected scanning line is turned on, and charge is accumulated between the pixel electrode and the counter electrode. An electric voltage corresponding to the amount of charge is generated on the pixel electrode, and the liquid crystal of the liquid crystal layer is oriented according to the voltage. Therefore, light is transmitted at a specified transmittance in the pixel.

[0136] After that, the switch element is turned off, and ideally the stored charge is maintained, so the voltage does not change and the light transmittance is constant. However, in reality, if the switch element is turned off, the charge stored in the pixel gradually leaks and the voltage of the pixel electrode also drops. As a result, the light transmittance also gradually decreases.

[0137] For this reason, as shown in (b), in one scanning period, at timing S1 when the lower end is scanned, the pixels connected to the scanning line at the upper end are charged in the first scanning period, and the leakage of charge increases, thereby minimizing the transmittance. On the other hand, since the pixels connected to the lower end are charged earlier, the leakage of charge is small, and the transmittance is maximized.

[0138] In contrast, in timings S2 to S4 where the scanning position of the scanning line is between the upper end and the lower end, the pixel with the largest transmittance is adjacent to the pixel with the smallest transmittance because the scanning line scanned previously is adjacent to the scanning line scanned next time. The greater the transmittance of the liquid crystal panel 50, the higher the brightness of the liquid crystal panel 50 caused by the backlight 70. Therefore, in timings S2 to S4, the display area of ​​the liquid crystal panel 50 generates stripe-shaped brightness unevenness (striped unevenness) where the brightest area and the darkest area are adjacent to each other with the scanning position as the boundary.

[0139] When the backlight 70 is always on, the position of the scanning line moves from the upper end to the lower end in sequence during one scanning period, so the above-mentioned brightness unevenness is averaged and not noticeable. However, when the backlight 70 is periodically turned off in synchronization with a scanning period and the infrared light-emitting element is turned on during this period, stripe unevenness occurs at a specific position. In addition, when the turning off of the backlight 70 is not synchronized with a scanning period, the brightness distribution of the liquid crystal panel 50 changes all the time. In particular, when the scanning cycle of the liquid crystal panel 50 and the flashing cycle of the backlight are slightly deviated, beat noise (beat noise) is generated at a frequency corresponding to the deviation, in which the position of the stripe unevenness moves (flows) at a certain speed.

[0140] In the imaging device with display function of this embodiment, the backlight 70 is turned off at the timing when the scanning of the liquid crystal panel 50 is completed, and the infrared light emitting element 73 is turned on to perform imaging by the infrared camera 60. Fig.28 As shown, the infrared camera 60 performs imaging before and after the timing including the end of one scanning period of the liquid crystal panel 50. The infrared light emitting element 73 is turned on at a timing slightly earlier than the imaging period, and the infrared light emitting element 73 is turned off slightly after the imaging period of the infrared camera 60 ends. The backlight 70 is turned on during the period when the infrared light emitting element 73 is turned off. In other words, the backlight 70 is turned off during the period when the infrared light emitting element 73 is turned on.

[0141] The period of extinguishing the backlight 70 and the period of lighting the infrared light emitting element 73 are consistent with the scanning period of the liquid crystal panel 50. As described above, the timing of extinguishing the backlight 70, the timing of lighting the infrared light emitting element 73, and the timing of the imaging of the infrared camera 60 are roughly consistent with the end of a scanning period of the liquid crystal panel 50, that is, the timing of scanning the lower end scanning line.

[0142] In addition, Figure 29 to Figure 31 The backlight 70, the infrared light emitting element 73 and the infrared camera 60 can also be controlled at the timing shown. Fig.29 In the example shown, at the timing of scanning the lower end of the scanning line and the lower end portion of the plurality of scanning lines preceding it, the backlight 70 is turned off, the infrared light emitting element 73 is turned on, and the infrared camera 60 takes an image. Fig.30 In the example shown, at the timing of scanning the upper end of the scanning line and the upper end portion of the plurality of scanning lines immediately adjacent thereto, the backlight 70 is turned off, the infrared light emitting element 73 is turned on, and the infrared camera 60 takes an image. Fig.31 In the example shown, a pause period for the inspection line is provided between scanning periods. After the scanning of the liquid crystal panel 50 is completed, the backlight 70 is turned off and the infrared light emitting element 73 is turned on, and the infrared camera 60 takes pictures before the next scanning begins.

[0143] By performing such control, the backlight 70 is turned off when the infrared camera 60 is shooting. Therefore, when shooting, the influence of visible light from the backlight 70 can be suppressed, and a clear image can be obtained by the infrared camera 60. Specifically, even if the visible light blocking performance of the infrared transmission filter 64 of the infrared camera 60 is insufficient, since the visible light does not reach the imaging element 61, the black level of the captured image does not increase or the S / N does not decrease, and a clear image can be captured.

[0144] In addition, by fixing the scanning position of the panel when the backlight is turned off, it is possible to suppress the beat noise and the like that can cause the brightness change caused by the turning off of the backlight 70. Furthermore, by turning off the backlight 70 at the timing of the end of scanning of the liquid crystal panel 50, the timing after the end of scanning of the liquid crystal panel and before the start of the next scan, or the timing of scanning the upper end or the lower end of the display area, it is possible to suppress the generation of stripes and the like and suppress the influence on the image display.

[0145] (Eighth Embodiment) Fig.32 2 is a schematic cross-sectional view of a main part of the imaging device with a display function of this embodiment. The imaging device with a display function of this embodiment is different from the sixth embodiment in that it further includes a half mirror 98 .

[0146] The half mirror 98 is disposed in front of the liquid crystal panel 50. In the present embodiment, the half mirror 98 is located between the cover glass 90 and the liquid crystal panel 50. The half mirror 98 covers the entire display region DR, and the half mirror and the through hole 182h of the diffuser 182 are entirely overlapped in a plan view.

[0147] The half mirror 98 preferably has a property that the infrared transmittance is higher than the visible light transmittance. For example, the transmittance of the half mirror 98 at a wavelength of 940 nm is preferably greater than the transmittance at a wavelength of 550 nm. The half mirror 98 having such optical characteristics can be formed of a dielectric multilayer film.

[0148] According to such a configuration, the camera device with display function of the present embodiment also has the function of a mirror. Therefore, for example, it can be suitable for a rearview mirror of a vehicle. Specifically, by making the liquid crystal panel 50 display the image of the camera that shoots the rear of the vehicle, it can be used as an electronic mirror. In addition, when the power supply of the camera device with display function is lost by the driver's choice or when the camera device is driven, it can also be used as a common reflector.

[0149] In addition, the driver needs to observe the rearview mirror, so it is difficult to configure obstacles between the rearview mirror and the driver. Therefore, the camera device with display function of the present embodiment configured at the position of the rearview mirror can reliably shoot the driver through the infrared camera 60, and can appropriately monitor the state of the driver.

[0150] In addition, the transmittance of infrared light passing through the half mirror 98 is high, and a good infrared image can be obtained.

[0151] (Other methods) The camera device with display function disclosed in the present invention can be subjected to various changes. First, the driving method of the liquid crystal panel is not limited to FFS, and the liquid crystal panel can also be driven by IPS or other driving methods. In addition, in the present embodiment, the optical path of the light that passes through the first region DR1, DR1' and is incident on the imaging element 61 of the infrared camera 60 is a straight line, but the optical path can also be bent in a direction parallel to the back surface 50b of the liquid crystal panel 50 by a mirror or the like. In this case, since the infrared camera can be arranged on the side of the liquid crystal panel 50, the overall thickness of the camera device with display function can be reduced. In addition, as long as there is no contradiction, the first to eighth embodiments can be combined with more than two embodiments.

[0152] In addition, in the first to eighth embodiments, the camera device with a display function has an optical structure having a diffusion plate. However, in the backlight, the display light-emitting element and the infrared light-emitting element are covered by a diffusion member or the like, and in the case where uniform light is emitted from the backlight, the optical structure may not include a diffusion plate. In this case, it is also possible not to provide a through hole in the optical structure, and the light that transmits the first area further transmits the optical structure and enters the camera element. In addition, by providing the optical function of the optical structure in the backlight, the camera device with a display function may not have an optical structure.

[0153] In addition, in the camera device with display function of the fifth embodiment, by including the above-mentioned backlight, optical structure and infrared camera, even if the infrared camera is arranged on the backlight side, it is possible to suppress the reduction of brightness in the area where the infrared camera is located in the liquid crystal panel, and it is difficult to recognize the presence of the infrared camera. Such a configuration including the backlight, optical structure and infrared camera can be called a camera device with a light source for a liquid crystal panel, and the above-mentioned effect is achieved.

[0154] Specifically, the camera device with a light source for a liquid crystal panel disclosed in the fifth embodiment comprises: a backlight having a light-emitting element for display; an optical structure including a diffuser, which is arranged at a position where light emitted from the light-emitting element for display is transmitted; and an infrared camera, which has a lens barrel that supports a focusing lens, the camera element and the focusing lens with a prescribed gap relative to the camera element, at least a portion of the lens barrel is located closer to the backlight side than the diffuser, the diffuser having a through hole, the through hole of the diffuser overlapping with the lens barrel when viewed from above, and the area of ​​the through hole is smaller than the area of ​​the lens barrel when viewed from above.

[0155] Such a camera device with a light source for a liquid crystal panel is not limited to a display device for an instrument panel, and can be applied to a camera device with a display function, which can display an image without being aware of the existence of the camera device. In addition, as long as it is possible to perform appropriate image processing according to the purpose of the image obtained by the camera device or the purpose, the image obtained by the infrared camera may not always be clear. Therefore, in the camera device with a light source for a liquid crystal panel of the fifth embodiment, the black matrix can also be combined with the liquid crystal panel arranged on the front surface, and a camera device with a display function can be realized in which the existence of the infrared camera is not easily recognized even through such a combination.

[0156] The imaging device with a display function of the present disclosure can also be described as follows.

[0157] The first structure of the camera device with display function disclosed in the present invention comprises: a liquid crystal panel; an infrared camera having a focusing lens and a camera element; and a backlight, which is arranged on the back side, the liquid crystal panel has a display area when viewed from above, the display area includes a first area and a second area located at a position surrounding the first area, at least the camera element of the infrared camera is arranged on the optical path of light that passes through the first area and the focusing lens, the liquid crystal panel does not have a black matrix at least in the first area, and has color filters in the first area and the second area.

[0158] According to the first configuration, since there is no black matrix in the first area, the influence of the diffraction image of the image can be suppressed, and a clear infrared image can be obtained. In addition, the second area is located at a position surrounding the first area, and images can be displayed in the first area and the second area. That is, an infrared camera can be configured on the back of the liquid crystal panel instead of the end. Therefore, for example, when a camera device with this display function is used for shooting the driver, the driver can be prevented from recognizing the presence of a camera (without applying pressure), while providing a comfortable driving environment and monitoring the driver's status.

[0159] Another first configuration of a camera device with a display function disclosed herein comprises: a liquid crystal panel having a display area; an infrared camera having a focusing lens and a camera element; and a backlight arranged on the back side, wherein at least the camera element of the infrared camera is arranged on an optical path of light that passes through the display area of ​​the liquid crystal panel and the focusing lens, and the liquid crystal panel does not have a black matrix in the display area and has a color filter.

[0160] In the second configuration of the imaging device with display function, in the first configuration, the color filter of each pixel may also contact the color filter of the adjacent pixel in the first region. By contacting the color filters of each pixel in the first region, even without a black matrix, it is possible to suppress leakage of light emitted by the non-transmitting filter, and to display an image in correct color.

[0161] The camera device with display function of the third configuration may be such that, in the first configuration, the liquid crystal panel has a black matrix in the second region, and the black matrix is ​​arranged so as to overlap at least a boundary between adjacent pixels. By having the black matrix in the second region, light leakage can be suppressed.

[0162] The fourth configuration of the imaging device with a display function may be such that, in the first configuration, the color filter of each pixel contacts the color filter of an adjacent pixel in an area of ​​more than 90% of the display area including the entire first area and at least a portion of the second area. Since the first area and the second area do not have a black matrix, the difference in visual recognition between the first area and the second area when observing the screen can be reduced.

[0163] The camera device with display function of the fifth configuration may be such that, in the first configuration, the color filter has at least three different monochromatic filters, and in the region of each pixel in the first region that is adjacent to the boundary of the adjacent pixels, two or more different monochromatic filters overlap. By overlapping two or more monochromatic filters at the boundary of the pixels, the transmittance of visible light is reduced, and mixing of light between adjacent pixels can be suppressed.

[0164] The sixth configuration of the imaging device with a display function may be that, in the first configuration, the color filter has at least three different monochrome filters, and two or more different monochrome filters overlap in the area where the boundaries of each pixel in the entire first area and at least a part of the second area are adjacent to each other.

[0165] The camera device with display function of the seventh configuration may be such that, in the first configuration, the color filter has at least three different monochromatic filters, and in the region of each pixel in the first region that is adjacent to the boundary of the adjacent pixels, the three or more different monochromatic filters overlap. By overlapping the three or more monochromatic filters at the boundary of the pixels, the transmittance of visible light is further reduced, and mixing of light between adjacent pixels can be suppressed.

[0166] The camera device with display function of the eighth configuration may be that, in the fourth configuration, the color filter has at least three different monochrome filters, and the three or more different monochrome filters overlap in the area where the boundaries of each pixel of the entire first area and at least a part of the second area are adjacent to the pixels.

[0167] The ninth configuration of the imaging device with display function may be that, in the first configuration, the infrared camera further comprises a focusing lens, which is located on the optical path and between the liquid crystal panel and the imaging element, and the area of ​​the first region is equal to or larger than the opening area of ​​the focusing lens.

[0168] The camera device with display function of the tenth configuration may also be, in the first configuration, further comprising: a first polarizing plate, which is arranged in front of the liquid crystal panel; and a second polarizing plate, which is arranged between the liquid crystal panel and the backlight, and the first polarizing plate and the second polarizing plate overlap with the first area and the second area. Since the polarizing plate is not processed, the cost can be reduced. In the first area, the image is displayed in the same way as in the second area.

[0169] The camera device with display function of the eleventh configuration may be, in the first configuration, further comprising an optical structure, the optical structure comprising at least one optical sheet arranged between the second polarizing plate and the backlight, the optical structure having an optical structure through hole in a region overlapping with the first region. Since the optical structure is not located in the optical path of the infrared camera, a clear image can be obtained.

[0170] The camera device with display function of the twelfth configuration may be such that, in the eleventh configuration, the opening area of ​​the through hole of the optical structure is equal to or larger than the opening area of ​​the condenser lens. Thus, the camera field of view is prevented from being lost.

[0171] The camera device with a display function of the thirteenth configuration may be configured such that, in the eleventh configuration, the opening area of ​​the through hole of the optical structure is equal to the area of ​​the first region and smaller than the area of ​​the first region.

[0172] The camera device with display function of the fourteenth configuration may be that, in the eleventh configuration, the opening area of ​​the through hole of the optical structure is equal to or larger than the opening area of ​​the lens, and the opening area of ​​the through hole of the optical structure is equal to or smaller than the area of ​​the first region.

[0173] According to the fifteenth configuration, the camera device with a display function may also be that in the ninth configuration, the backlight comprises: a base having a bottom opposite to the display area; and a plurality of display light-emitting elements, the plurality of display light-emitting elements are arranged at the bottom, and the focusing lens is located between the bottom of the base and the liquid crystal panel.

[0174] The camera device with display function of the sixteenth configuration may also be that in the fifteenth configuration, the backlight has at least one infrared light emitting element arranged at the bottom. With this configuration, infrared light for shooting can be irradiated from the front of the driver. In addition, by being arranged at the bottom, stray light can be suppressed from entering the focusing lens.

[0175] The camera device with display function of the seventeenth configuration may also be, in the fifteenth configuration, the backlight having a plurality of reflective surfaces respectively located between a plurality of display light-emitting elements, and further having a partition wall structure arranged at the bottom of the base, one of the plurality of reflective surfaces being located between at least one infrared light-emitting element and a focusing lens.

[0176] The camera device with display function of the eighteenth configuration may also be that in the ninth configuration, the backlight includes: a base having a bottom opposite to the display area; a light guide plate arranged at the bottom; and a display light-emitting element arranged on the side of the light guide plate, and the focusing lens is located between the bottom of the base and the liquid crystal panel.

[0177] The camera device with a display function of the nineteenth configuration may be configured such that, in the eighteenth configuration, the backlight includes an infrared light emitting element disposed on a side surface of the light guide plate.

[0178] The camera device with display function of the twentieth configuration may be configured such that, in the eighth configuration, the backlight further includes at least one infrared light emitting element arranged to face the main surface of the light guide plate.

[0179] The imaging device with display function of the twenty-first configuration may be such that, in the fourteenth or eighteenth configuration, the infrared camera further comprises a circuit substrate, the circuit substrate comprises a driving circuit for driving the imaging element, the imaging element is mounted on the circuit substrate, the base comprises a base through hole provided at a position overlapping the first area when viewed from above, and the circuit substrate is arranged outside the base in such a manner that the imaging element is located in the base through hole. According to this configuration, the thickness of the backlight can be reduced, and deterioration of the in-plane uniformity of the backlight can be suppressed.

[0180] The twenty-second configuration of the imaging device with display function may be such that, in the ninth configuration, the infrared camera further comprises an infrared transmission filter, the infrared transmission filter is arranged on the optical path, and the transmittance of the wavelength of 920nm is higher than the transmittance of the wavelength of 550nm, thereby suppressing stray light of visible light.

[0181] The imaging device with a display function of the twenty-third configuration may be configured such that, in the twenty-second configuration, the infrared transmission filter is located between the condenser lens and the imaging element. This can effectively suppress stray light.

[0182] The camera device with display function of the twenty-fourth configuration may be such that, in the ninth configuration, the backlight further includes a cylindrical light shielding body, the light shielding body being arranged in the chassis so as to surround the light path and shielding infrared rays. Thus, stray light of infrared rays can be suppressed.

[0183] The imaging device with display function of the twenty-fifth configuration may be configured such that, in the twenty-fourth configuration, the transmittance of the light shielding body at a wavelength of 920 nm is equal to or smaller than the transmittance at a wavelength of 550 nm. This can suppress stray light of infrared rays.

[0184] The imaging device with display function of the twenty-sixth configuration may be configured such that, in the twenty-fifth configuration, the light blocking body transmits visible light. The light blocking body transmits the visible light, so that light emitted from the backlight also reaches the first region, and darkness of the first region can be suppressed.

[0185] The twenty-seventh configuration of the camera device with a display function may also be that in the first configuration, the liquid crystal panel includes: a TFT substrate; a relative substrate; and a liquid crystal layer, which is arranged between the TFT substrate and the relative substrate, and the TFT substrate has: a plurality of scanning lines, which are arranged in the display area, extend along a first direction, and are arranged along a second direction different from the first direction; a plurality of data lines, which extend along the second direction and are arranged along the first direction; a plurality of switching elements, which are respectively connected to one of the plurality of scanning lines and one of the plurality of data lines; and a plurality of pixel electrodes, which are respectively connected to the plurality of switching elements and are arranged in two dimensions in the first direction and the second direction.

[0186] The camera device with display function of the twenty-eighth configuration may be configured such that, in the twenty-seventh configuration, eight or more of each of the plurality of scanning lines, the plurality of data lines, the plurality of switching elements, and the plurality of pixel electrodes are located in the first region of the liquid crystal panel.

[0187] The camera device with display function of the twenty-ninth configuration may also be that, in the twenty-seventh configuration, a plurality of scanning lines, a plurality of data lines, a plurality of switching elements, and a plurality of pixel electrodes are respectively located in a first area and a second area of ​​the liquid crystal panel, and an area of ​​the pixel electrode in the first area is within a range of greater than 0.5 times and less than 1.5 times an area of ​​the pixel electrode in the second area.

[0188] The camera device with a display function of the thirtieth configuration may also be that, in the twenty-seventh configuration, a plurality of scanning lines, a plurality of data lines, a plurality of switching elements, and a plurality of pixel electrodes are respectively located in a first area and a second area of ​​a liquid crystal panel, and an interval between adjacent scanning lines in the first area is within a range of greater than 0.5 times and less than 1.5 times the interval between adjacent scanning lines in the second area.

[0189] The camera device with display function of the thirty-first configuration may also be, in the twenty-seventh configuration, a plurality of scanning lines, a plurality of data lines, a plurality of switching elements, and a plurality of pixel electrodes are respectively located in a first area and a second area of ​​the liquid crystal panel, and the spacing between adjacent data lines in the first area is within a range of greater than 0.5 times and less than 1.5 times the spacing between adjacent data lines in the second area.

[0190] The camera device with display function of the thirty-second configuration may also be that, in the twenty-seventh configuration, a plurality of scanning lines, a plurality of data lines, a plurality of switching elements, and a plurality of pixel electrodes are respectively located in a first area and a second area of ​​the liquid crystal panel, and the spacing between adjacent switching elements in the first area is within a range of greater than 0.5 times and less than 1.5 times the spacing between adjacent switching elements in the second area.

[0191] The camera device with display function of the thirty-third configuration may be that, in the twenty-seventh configuration, the plurality of scanning lines, the plurality of data lines, the plurality of switching elements, and the plurality of pixel electrodes are respectively located in the first region and the second region of the liquid crystal panel, the area of ​​the pixel electrodes in the first region is within a range of 0.5 times or more and 1.5 times or less of the area of ​​the pixel electrodes in the second region, the interval between adjacent scanning lines in the first region is within a range of 0.5 times or more and 1.5 times or less of the interval between adjacent scanning lines in the second region, and the interval between adjacent data lines in the first region is within a range of 0.5 times or more and 1.5 times or less of the interval between adjacent data lines in the second region. According to the twenty-eighth to thirty-first configurations, even without performing special image processing, an integrated image or dynamic image can be displayed in the first region and the second region.

[0192] The camera device with display function of the thirty-fourth configuration may also be that in the twenty-seventh configuration, the plurality of pixel electrodes include a plurality of first pixel electrodes and a plurality of second pixel electrodes, a first pixel electrode of the plurality of first pixel electrodes and a second pixel electrode of the plurality of second pixel electrodes are adjacent in the first direction and are arranged between a pair of data lines adjacent in the first direction. By reducing the number of data wirings, even when the pixel pitch becomes smaller, by expanding the interval of the data lines that form the diffraction grating, it is possible to suppress the interval of the diffraction image from becoming wider and the image from becoming unclear.

[0193] The camera device with display function of the thirty-fifth configuration may also be that in the thirty-fourth configuration, the plurality of scanning lines include a plurality of first scanning lines and a plurality of second scanning lines, one of the plurality of first scanning lines and one of the plurality of second scanning lines are arranged between pixel electrodes adjacent in the second direction among the plurality of pixel electrodes, and the first pixel electrode and the second pixel electrode arranged between a pair of adjacent data lines are connected to the first scanning line and the second scanning line respectively through a switching element. Thus, the number of data lines can be reduced.

[0194] The camera device with display function of the thirty-sixth configuration may be configured such that, in the first configuration, the liquid crystal panel operates in a normally black mode. Thus, light leakage during black display can be suppressed.

[0195] The thirty-seventh configuration of the present disclosure is a camera device with a display function comprising: a liquid crystal panel having a display area; an infrared camera having a focusing lens, an imaging element and a lens barrel, the lens barrel supporting the focusing lens relative to the imaging element with a specified gap; a backlight arranged on the back side of the liquid crystal panel; and an optical structure arranged between the liquid crystal panel and the backlight and including a diffuser, the camera device with a display function being characterized in that the diffuser has a through hole, and when viewed from above, the through hole of the diffuser overlaps with the lens barrel, and the area of ​​the through hole when viewed from above is smaller than the area of ​​the lens barrel.

[0196] According to this configuration, light can be incident from the diffuser into the lens barrel area, and the opening area of ​​the through hole can be reduced. Therefore, the area of ​​the infrared camera where the brightness is easily reduced can be reduced, and the presence of the infrared camera can be made less conspicuous. In addition, the uniformity of the light emitted from the backlight in the display area can be improved.

[0197] The camera device with display function of the thirty-eighth configuration may also be that, in the above-mentioned thirty-seventh configuration, the diffuser has: a first main surface, which is located on the backlight side; a second main surface, which is located on the liquid crystal panel side; and a recessed portion, which is arranged on the first main surface, the through hole is located between the bottom surface of the recessed portion and the second main surface, and a portion of the lens barrel is located in the recessed portion of the diffuser.

[0198] According to this configuration, it is easy to align the lens barrel holding the condenser lens and the diffuser, and since the diffuser is a single component, assembly is also easy.

[0199] The camera device with display function of the thirty-ninth configuration may be, in the thirty-seventh configuration, further comprising at least one infrared light emitting element disposed in a non-display area outside the display area. With this configuration, it is possible to prevent infrared light emitted from the infrared light emitting element for imaging from becoming stray light in the backlight and entering the infrared camera. Therefore, a clear image can be obtained.

[0200] The camera device with display function of the fortieth configuration may also be that in the thirty-seventh configuration, the backlight includes: a base having a bottom opposite to the display area; and a plurality of display light-emitting elements and a plurality of infrared light-emitting elements arranged on the bottom.

[0201] According to this configuration, since the infrared light emitting element is arranged in the backlight, the frame area can be narrowed. In addition, by arranging a plurality of display light emitting elements and a plurality of infrared light emitting elements at equal intervals, the infrared light for imaging can be uniformly emitted. In addition, by making the arrangement pitch of the infrared light emitting element larger than the arrangement pitch of the display light emitting element, the infrared light emitting element can be arranged separately from the infrared camera, and the infrared light emitted from the infrared light emitting element can be suppressed from being incident directly on the infrared camera as stray light.

[0202] The camera device with display function of the forty-first configuration may also be that in the thirty-seventh configuration, the diffuser includes a first diffuser plate and a second diffuser plate, the first diffuser plate and the second diffuser plate respectively have a first through hole and a second through hole, the opening area of ​​the second through hole is larger than the opening area of ​​the first through hole, and the first diffuser plate and the second diffuser plate are stacked in such a manner that the axis of the first through hole is consistent with the axis of the second through hole.

[0203] According to this configuration, the diffuser can be formed more simply by forming the diffuser with two plate-like components. In addition, by making the optical properties of the first diffuser plate and the second diffuser plate different, the optical function of the diffuser as a whole can be adjusted. For example, by reducing the haze value of the second diffuser plate, the material cost can be reduced.

[0204] The camera device with display function of the forty-second configuration may also be that, in the thirty-seventh configuration, the optical structure further has a second diffuser located between the liquid crystal panel and the diffuser, and in the second diffuser, the haze value relative to visible light is greater than the haze value relative to infrared light.

[0205] According to this configuration, by providing a through hole on the diffuser, the area above the through hole does not include diffused light of visible light from the backlight in the vertical direction, but only includes diffused light obliquely emitted from the portion around the through hole of the diffuser to the area above the through hole. In order to diffuse the light emitted from the diffuser in the vertical direction and the oblique direction, the second diffuser also emits visible light from the backlight in the vertical direction in the area above the through hole through the diffusion of the second diffuser. Therefore, the light emitted from the second diffuser in the area above the through hole of the diffuser is also emitted in the vertical direction and the oblique direction in the same manner as the area other than the area above the through hole, and the diffusion state of the light is no different between the through hole and the area other than the through hole. That is, according to this configuration, the visible light from the backlight is further scattered, and the boundary between the first area and the second area becomes less conspicuous. In addition, by making the haze value relative to infrared light smaller than the haze value relative to visible light in the second diffuser, an infrared image can be captured with good resolution. The camera device with display function of the 43rd configuration may be such that, in the first or 37th configuration, the infrared camera performs image capture during at least a portion of the period during which the backlight is turned off. According to this configuration, image capture based on infrared flickering is performed when the backlight is turned off, so that the influence of visible light from the backlight can be suppressed during image capture, and a clear image can be obtained by the infrared camera.

[0206] The camera device with display function of the forty-fourth configuration may be, in the forty-third configuration, further comprising an infrared light emitting element, wherein the backlight is turned off at the timing when the scanning of the liquid crystal panel is completed, at the timing before the next scanning starts after the scanning of the liquid crystal panel is completed, or at the timing when the upper end portion or the lower end portion of the display area is scanned. Thus, it is possible to suppress the beat noise and the like that may be caused by the brightness change caused by the turning off of the backlight, or to suppress the influence on the image display.

[0207] The camera device with display function of the forty-fifth configuration may also be, in the thirty-seventh configuration, further comprising a half mirror, wherein the half mirror is arranged in front of the liquid crystal panel, and when viewed from above, the through hole of the diffuser entirely overlaps with the half mirror.

[0208] According to this configuration, the camera device with display function can also function as a mirror. In addition, by being applied to a rearview mirror for vehicle use, it is possible to monitor the driver without sandwiching obstacles.

[0209] The camera device with display function of the forty-sixth configuration may be configured such that, in the forty-fifth configuration, the transmittance of the half mirror at a wavelength of 940 nm is greater than the transmittance at a wavelength of 550 nm. According to this configuration, a better infrared image can be acquired.

[0210] In the camera device with a light source for a liquid crystal panel of the forty-seventh structure of the present application, in the thirty-sixth to forty-sixth structures, the liquid crystal panel may also have a color filter and no black matrix on the optical path of light that passes through the through hole of the diffuser and the focusing lens and reaches the camera element.

[0211] The forty-eighth configuration of the present disclosure is an imaging device with a light source for a liquid crystal panel, comprising: a backlight having a light-emitting element for display; an optical structure including a diffuser, wherein the diffuser is arranged at a position through which light emitted from the light-emitting element for display is transmitted; and an infrared camera having: a focusing lens; an imaging element; and a lens barrel, which supports the focusing lens relative to the imaging element with a specified gap, at least a portion of the lens barrel being located closer to the backlight side than the diffuser; the diffuser having a through hole, wherein the through hole of the diffuser overlaps with the lens barrel when viewed from above, and the area of ​​the through hole when viewed from above is smaller than the area of ​​the lens barrel.

[0212] With this configuration, it is possible to provide an imaging device with a light source for a liquid crystal panel, which can reduce the area of ​​the infrared camera where the brightness is easily reduced, and make the presence of the infrared camera less noticeable.

[0213] The camera device with a light source for a liquid crystal panel of the forty-ninth configuration may also be that, in the forty-eighth configuration, the diffuser has: a first main surface, which is located on the backlight side; a second main surface, which is located on the liquid crystal panel side; and a recessed portion, which is arranged on the first main surface, the through hole is located between the bottom surface of the recessed portion and the second main surface, and another part of the lens barrel is located in the recessed portion of the diffuser. Description of Reference Numerals

[0214] 10…TFT substrate; 11…substrate; 12…scanning line; 12A…first scanning line; 12B…second scanning line; 12b…gate; 13…insulating layer; 14…data line; 14'…data line; 14s…source electrode; 15…pixel electrode; 15A…first pixel electrode; 15B…second pixel electrode; 16…insulating layer; 17…semiconductor layer; 18…drain electrode; 19…opposite electrode; 19s…slit; 30…liquid crystal layer ; 40... relative substrate; 41... substrate; 42... black matrix; 42x, 42y... portions of the black matrix; 43... color filter; 43B... blue filter; 43G... green filter; 43R... red filter; 50... liquid crystal panel; 50a... front; 50b... back; 60... infrared camera; 61... imaging element; 62... circuit substrate; 63... focusing lens; 64... infrared transmission filter; 65... lens barrel; 7 0, 70'...backlight; 71...base; 71a...bottom; 71h...base through hole; 71h'...through hole; 72...display light emitting element; 73...infrared light emitting element; 74, 74'...mounting substrate; 75...partition wall structure; 75r...reflecting surface; 76...light shielding body; 77...light guide plate; 77c...side surface; 77h...through hole; 78...reflecting sheet; 78h...through hole; 80, 180, 280...optical structure ; 80h…through hole of optical structure; 81…brightness enhancement film; 81h…through hole; 82…diffuser plate; 82h…through hole; 85, 185…frame; 92…glass cover; 91…first polarizing plate; 92…second polarizing plate; 98…half mirror; 101…camera device with display function; 182…diffuser, 182A…first diffuser plate, 182B…second diffuser plate, 182d…recess, 182h…through hole.

Claims

1. A camera device with a display function, comprising: LCD panel; An infrared camera having a focusing lens and an imaging element; and A backlight is disposed on the back of the liquid crystal panel. The camera device with display function is characterized in that: The liquid crystal panel has a display area when viewed from above, and the display area includes a first area and a second area located at a position surrounding the first area. At least the imaging element of the infrared camera is arranged on the optical path of the light that passes through the first area and the condenser lens. The liquid crystal panel has no black matrix at least in the first region, and has color filters in the first region and the second region.

2. The camera device with display function according to claim 1, characterized in that: In the first region, the color filter of each pixel is in contact with the color filter of an adjacent pixel.

3. The camera device with display function according to claim 2, characterized in that: The liquid crystal panel includes a black matrix in the second region, and the black matrix is ​​arranged so as to overlap at least a boundary between adjacent pixels.

4. The camera device with display function according to claim 2, characterized in that: The color filter includes at least three different monochromatic filters, and two or more different monochromatic filters overlap in a region of each pixel in the first region that is adjacent to a boundary of an adjacent pixel.

5. The camera device with display function according to claim 1, characterized in that: The area of ​​the first region is equal to or larger than the opening area of ​​the condenser lens.

6. The camera device with display function according to claim 1, characterized in that: The backlight has: a base having a bottom opposite to the display area; and A plurality of display light emitting elements are arranged on the bottom, and the condenser lens is located between the bottom of the base and the liquid crystal panel.

7. The camera device with display function according to claim 6, characterized in that: The infrared camera further includes a circuit board, wherein the circuit board includes a driving circuit for driving the imaging element. The imaging element is mounted on the circuit substrate. The base has a base through hole provided at a position overlapping with the first area in a plan view, The circuit substrate is arranged outside the chassis so that the imaging element is located in the chassis through-hole.

8. The camera device with display function according to claim 1, characterized in that: The infrared camera further includes an infrared transmission filter disposed on the optical path and having a transmittance at a wavelength of 920 nm higher than a transmittance at a wavelength of 550 nm.

9. The camera device with display function according to claim 6, characterized in that: The backlight further includes a cylindrical light shielding body, which is arranged in the chassis in a manner of surrounding the light path and shielding infrared rays.

10. The camera device with display function according to claim 1, characterized in that: The liquid crystal panel comprises: TFT substrate; an opposing substrate; and a liquid crystal layer disposed between the TFT substrate and the counter substrate, The TFT substrate has: A plurality of scan lines are arranged in the display area, extending along a first direction, and arranged along a second direction different from the first direction; a plurality of data lines extending along the second direction and arranged along the first direction; A plurality of switch elements are respectively connected to one of the plurality of scan lines and one of the plurality of data lines; A plurality of pixel electrodes are respectively connected to the plurality of switch elements and are arranged two-dimensionally in the first direction and the second direction. The plurality of scan lines, the plurality of data lines, the plurality of switch elements, and the plurality of pixel electrodes are respectively located in the first area and the second area of ​​the liquid crystal panel. The interval between adjacent scanning lines in the first region is within a range of not less than 0.5 times and not more than 1.5 times the interval between adjacent scanning lines in the second region.

11. A camera device with a display function, comprising: A liquid crystal panel having a display area; An infrared camera comprising a condenser lens, an imaging element, and a lens barrel, wherein the lens barrel supports the condenser lens with respect to the imaging element at a predetermined gap; A backlight, which is disposed on the back of the liquid crystal panel; and The optical structure is arranged between the liquid crystal panel and the backlight and includes a diffuser. The camera device with display function is characterized in that: The diffuser has a through hole, When viewed from above, the through hole of the diffuser overlaps with the lens barrel. The area of ​​the through hole in the plan view is smaller than the area of ​​the lens barrel.

12. The camera device with display function according to claim 11, characterized in that: The diffuser has: A first main surface, which is located on the backlight side; A second main surface located on the liquid crystal panel side; and a recessed portion disposed on the first main surface, The through hole is located between the bottom surface of the recess and the second main surface. A portion of the lens barrel is located within the recessed portion of the diffuser.

13. The camera device with display function according to claim 11, characterized in that: The diffuser includes a first diffuser plate and a second diffuser plate, the first diffuser plate and the second diffuser plate respectively have a first through hole and a second through hole, the opening area of ​​the second through hole is larger than the opening area of ​​the first through hole, and the first diffuser plate and the second diffuser plate are stacked in a manner such that the axis of the first through hole is consistent with the axis of the second through hole.

14. The camera device with display function according to claim 11, characterized in that: The backlight comprises: a base having a bottom opposite to the display area; and A plurality of display light emitting elements and a plurality of infrared light emitting elements are arranged on the bottom.

15. The camera device with display function according to claim 11, characterized in that: The optical structure further includes a second diffuser located between the liquid crystal panel and the diffuser, and in the second diffuser, a haze value with respect to visible light is greater than a haze value with respect to infrared light.

16. The camera device with display function according to claim 11, characterized in that: The infrared camera performs imaging during at least a portion of the backlight off period.

17. The camera device with display function according to claim 16, characterized in that: It also has an infrared light emitting element, and the backlight is turned off at the timing when the scanning of the liquid crystal panel is completed, at the timing before the next scanning starts after the scanning of the liquid crystal panel is completed, or at the timing when the upper end or the lower end of the display area is scanned.

18. The camera device with display function according to claim 11, characterized in that: It also includes a half mirror, which is arranged in front of the liquid crystal panel. The through hole of the diffuser entirely overlaps with the half mirror in a plan view.

19. The camera device with display function according to claim 18, characterized in that: The transmittance of the semi-reflective mirror at a wavelength of 940 nm is greater than the transmittance at a wavelength of 550 nm.

20. The camera device with display function according to any one of claims 11 to 19, characterized in that: The liquid crystal panel has a color filter on an optical path of light that passes through the through hole of the diffuser and the condenser lens and reaches the imaging element, and does not have a black matrix.

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