TWI764157B - Projection electronic device - Google Patents

Abstract

A projection electronic device including a display screen, a host and a projection unit is provided. The display screen has a projection area and a non-projection area and includes a substrate and an electrochromic layer. The electrochromic layer is disposed on the substrate and is overlapped with the projection area and the non-projection area. The two parts of the electrochromic layer located in the projection area and the non-projection area are suitable for switching between a transparent state and a non-transparent state. The host is attached to the non-projection area of the display screen. The projection unit is set in the host and is suitable for projecting an image beam towards the projection area of the display screen.

Description

Projection electronic device

The present invention relates to an electronic device, and more particularly, to a projection type electronic device.

The traditional desktop computer sets the monitor and the host separately, and electrically connects the two through wiring, so there are problems such as occupying a large space and being inconspicuous. Therefore, an all-in-one computer (AI-In-One, AIO) that integrates the host computer with the display has been proposed, which can not only greatly reduce the space occupied, but also have a simpler appearance. However, most of the common all-in-one computers on the market use a liquid crystal display (LCD) panel or an organic light emitting diode (organic light emitting display, OLED) panel as a display, and such display panels are not in use. It is a state of black screen, which causes the overall appearance and taste of the all-in-one computer to be unable to be effectively improved. On the other hand, in order to drive the pixel structure of this type of display panel, circuit space for signal routing must be reserved at the periphery of the display area. As a result, the display of an all-in-one computer needs to achieve a narrow or even borderless design. Difficulty.

The present invention provides a projection type electronic device, which can provide users with better visual experience.

The projection type electronic device of the present invention includes a display screen, a host and a projection unit. The display screen has a projection area and a non-projection area, and includes a substrate and an electrochromic layer. The electrochromic layer is disposed on the substrate and overlaps the projection area and the non-projection area. The two parts of the electrochromic layer located in the projection area and the non-projection area are suitable for switching between the light-transmitting state and the non-light-transmitting state at the same time. The host is attached to the non-projection area of the display screen. The projection unit is arranged in the host and is suitable for projecting the image beam toward the projection area of the display screen.

In an embodiment of the present invention, the above-mentioned projection type electronic device further includes a connector disposed adjacent to a side edge of the substrate. The host sends electronic signals to the display screen through the connector.

In an embodiment of the present invention, the electronic signal of the above-mentioned projection electronic device is a switch signal, and is used to trigger the electrochromic layer to switch to a light-transmitting state or a non-light-transmitting state.

In an embodiment of the present invention, the above-mentioned projection type electronic device further includes a flexible circuit board and a connector. The flexible circuit board is electrically connected to the display screen. The connector is arranged on the flexible circuit board. The host sends electronic signals to the display screen through the connector.

In an embodiment of the present invention, the above-mentioned projection type electronic device further includes a connector. The base plate also has a side edge closer to the host and a protruding portion disposed on the side edge. The protruding portion overlaps the host. The non-projected area extends to the protruding portion, and the connector is arranged on the protruding portion.

In an embodiment of the present invention, the material of the substrate of the display screen of the above-mentioned projection electronic device includes acrylic or polyester film.

In an embodiment of the present invention, the electrochromic layer of the above-mentioned projection electronic device includes two transparent conductive layers and an electrochromic material layer sandwiched between the transparent conductive layers. A voltage is applied to these transparent conductive layers, so that the electrochromic material layer adjusts the degree of light transmission.

In an embodiment of the present invention, the above-mentioned electrochromic material layer of the projection type electronic device adjusts the light transmittance to be a light-transmitting state or a non-light-transmitting state.

In an embodiment of the present invention, the material of the electrochromic material layer of the above-mentioned projection electronic device is a polymer-dispersed liquid crystal material.

In an embodiment of the present invention, the projection area of the above-mentioned projection type electronic device has a projection length in the longitudinal direction. Each of the two transparent conductive layers has a discoloration length in the longitudinal direction, and the ratio of the projected length to the discoloration length is between 0.95 and 1.

In an embodiment of the present invention, the substrate of the above-mentioned projection type electronic device has a substrate length in the longitudinal direction. Each of the two transparent conductive layers has a discoloration length in the longitudinal direction, and the ratio of the discoloration length to the length of the substrate is between 0.95 and 1.

In an embodiment of the present invention, the projection area of the above-mentioned projection type electronic device has a projection length in the longitudinal direction, and the ratio of the projection length to the substrate length is between 0.9 and 1.

In an embodiment of the present invention, each of the two transparent conductive layers of the above-mentioned projection type electronic device has a projected width in the second direction. The second direction intersects the length direction. The substrate has a host width in the second direction, and the ratio of the projected width to the host width is between 0.95 and 1.

In an embodiment of the present invention, the projection area of the display screen of the above-mentioned projection type electronic device and the host have a projection width Wa and a host width Wb respectively in directions. The host has a first surface opposite to the non-projection area of the display screen and a second surface connected to the first surface. The first surface faces the display screen. There is a first distance La in the direction between the projection area of the display screen and the second surface of the host, and the projection width Wa, the host width Wb and the first distance La satisfy the following relationship: 0.95≦Wa/(Wa+La-Wb )≦1.

In an embodiment of the present invention, the host of the above-mentioned projection electronic device has a first surface disposed opposite to the non-projection area of the display screen and a second surface connected to the first surface. There is a first distance in the direction between the projection area of the display screen and the second surface of the host. The substrate also has a side edge overlapping the first surface. There is a second distance in the direction between the side edge of the substrate and the second surface of the host. The second distance is greater than or equal to 0 and less than or equal to the first distance.

In an embodiment of the present invention, the host of the above-mentioned projection electronic device includes a casing and a cover. The housing has an opening exposing the projection lens of the projection unit. The cover is movably arranged on the casing and is suitable for moving to a shielding position to shield the opening of the casing.

In an embodiment of the present invention, the above-mentioned cover of the projection electronic device is further adapted to be moved to the open position to expose the opening of the casing and drive the projection lens of the projection unit to project the image beam toward the projection area of the display screen.

In an embodiment of the present invention, the image beam of the above-mentioned projection electronic device forms an image frame on the display screen.

In an embodiment of the present invention, when the cover of the above-mentioned projection electronic device is moved to the open position, the electrochromic layer is switched to a non-transmitting state, and when the cover is moved to the shielding position, the electrochromic layer is switched to a transparent state light state.

Based on the above, in the projection type electronic device of an embodiment of the present invention, the display screen has a projection area and a non-projection area that can be switched between a light-transmitting state and a non-light-transmitting state at the same time. When the display screen is in a non-light-transmitting state, the projection unit is used to project an image frame toward the projection area to achieve a display effect with a narrow frame or no frame. At the same time, under the cover of the display screen, the host attached to the non-projection area can create a visual aesthetic that the display screen is suspended in the air. On the other hand, when the display function of the projection electronic device is turned off, its electrochromic layer will be switched to a light-transmitting state, which significantly reduces the visibility of the display screen, which helps to improve the appearance of the projection electronic device when it is idle. taste.

In order to make the above-mentioned features and advantages of the present invention more obvious and easy to understand, the following embodiments are given and described in detail with the accompanying drawings as follows.

FIG. 1 is a schematic top view of a projection type electronic device according to a first embodiment of the present invention. FIG. 2A is a schematic rear view of the projection type electronic device of FIG. 1 . FIG. 2B is a schematic side view of the projection type electronic device of FIG. 1 . FIG. 3 is a schematic cross-sectional view of a display screen of the projection electronic device of FIG. 1 . FIG. 4 is a schematic top view of the projection type electronic device of FIG. 1 when the display function is turned off. FIG. 5A is a schematic rear view of the projection type electronic device of FIG. 4 . FIG. 5B is a schematic side view of the projection type electronic device of FIG. 4 .

Please refer to FIG. 1 , FIG. 2A , FIG. 2B and FIG. 3 , the projection type electronic device 10 includes a display screen 100 , a host 200 and a projection unit 300 . The display screen 100 has a projection area PA and a non-projection area NPA other than the projection area PA. The host 200 is attached to the non-projection area NPA of the display screen 100 . The projection unit 300 is disposed in the host computer 200 and is adapted to project the image beam IB toward the projection area PA of the display screen 100 to form an image frame IM on the display screen 100 . That is to say, the projection type electronic device 10 realizes its display function by means of projection imaging. In particular, the display screen 100 of this embodiment is suitable for switching between a non-transmitting state and a translucent state, so as to improve the appearance of the projection electronic device 10 during operation or when not in use.

The display screen 100 includes a substrate 110 and an electrochromic layer 120 . The electrochromic layer 120 is disposed on the substrate 110 and overlaps the projection area PA and the non-projection area NPA. The electrochromic layer 120 here allows the display screen 100 to adjust the light transmittance of the projection area PA and the non-projection area NPA in an electronically controlled manner. That is, the electrochromic layer 120 is suitable for switching between a non-transmissive state (as shown in FIG. 2A ) and a transmissive state (as shown in FIG. 5A ). It should be noted that the two parts of the electrochromic layer 120 overlapping the projection area PA and the non-projection area NPA are switched between the light-transmitting state and the non-light-transmitting state in a synchronized manner. In this embodiment, the material of the substrate 110 may include acrylic, mylar film, or other suitable polymer materials, but the invention is not limited thereto. In other embodiments, the material of the substrate 110 may also be glass, quartz, or other hard materials with good light transmittance.

Further, the electrochromic layer 120 includes a transparent conductive layer 121 , a transparent conductive layer 122 and an electrochromic material layer 123 . The electrochromic material layer 123 is sandwiched between the transparent conductive layer 121 and the transparent conductive layer 122 . For example, the material of the electrochromic material layer 123 may be a polymer dispersed liquid crystal (PDLC) material, that is, the electrochromic material layer 123 may include a high molecular polymer layer (not shown) and A plurality of liquid crystal molecules (not shown) are dispersedly arranged in the high molecular polymer layer. When a voltage is applied to the transparent conductive layer 121 and the transparent conductive layer 122, the optical axis (or long axis) of the liquid crystal molecules will be parallel to the direction of the electric field formed between the two transparent conductive layers, resulting in the average refractive index of the liquid crystal molecules. substantially equal to the refractive index of the high molecular polymer layer. Therefore, when the light beam passes through the electrochromic material layer 123 , scattering will not occur at the interface between the liquid crystal molecules and the high molecular polymer layer. That is to say, the electrochromic material layer 123 (or the electrochromic layer 120 ) at this time is in a light-transmitting state.

On the contrary, when no voltage is applied between the transparent conductive layer 121 and the transparent conductive layer 122, the liquid crystal molecules will be randomly arranged, so that the average refractive index of the liquid crystal molecules is different from the refractive index of the high molecular polymer layer, resulting in light beams. When passing through the electrochromic material layer 123, scattering occurs at the interface between the liquid crystal molecules and the high molecular polymer layer. That is to say, the electrochromic material layer 123 (or the electrochromic layer 120 ) at this time is in a non-transmitting state.

However, the present invention is not limited thereto, and according to other embodiments, the electrochromic layer 120 may also be a multi-layer stack structure of an electrochromic material layer, an electrolyte layer and an ion storage layer. When a voltage is applied between the two transparent conductive layers, the electrochromic material layer will undergo a redox reaction to produce a color change, for example, the color changes from transparent to white. It can be seen that the present invention does not limit the state of the electrochromic layer 120 to which the voltage is applied, whether it is a light-transmitting state or a non-light-transmitting state, which should be determined by the type of its material and structural design. The light transmittance of the material makes it produce two different light transmittance degrees, which can be regarded as the light-transmitting state or the non-light-transmitting state of the present invention. In this embodiment, the materials of the transparent conductive layer 121 and the transparent conductive layer 122 include metal oxides, such as indium tin oxide, indium zinc oxide, aluminum tin oxide, aluminum zinc oxide, or other suitable oxides , or a stacked layer of at least two of the above.

Further, the projection type electronic device 10 further includes a connector 150 adjacent to the side edge 110 e of the substrate 110 . The non-projection area NPA of the display screen 100 is located between the side edge 110e of the substrate 110 and the projection area PA, and the host 200 transmits electronic signals to the display screen 100 through the connector 150 . In this embodiment, the electronic signal here is an on/off signal, which is used to trigger the state switching of the electrochromic layer 120 , such as switching from a light-transmitting state to a non-light-transmitting state, and the electrochromic layer The voltage required to be applied during the state switching process of 120 can be provided by an external power source, but the invention is not limited thereto. In other embodiments, the connector 150 can also be used to transmit a power signal to the display screen 100 . In other words, the voltage required to be applied by the electrochromic layer 120 during the state switching process can also be provided by the host 200 . It should be noted that, the number of connectors 150 here is exemplified by taking two as an example, which does not mean that the present invention is limited thereto. In other embodiments, the number of connectors 150 can also be adjusted according to actual circuit design or product requirements.

In this embodiment, the host 200 includes a casing 210 , a cover 220 and a system unit 230 . The housing 210 has an opening 210 a exposing the projection lens 310 of the projection unit 300 . The cover 220 is movably disposed on the housing 210 and is adapted to move between the opening position P1 (as shown in FIG. 2B ) and the shielding position P2 (as shown in FIG. 5B ). The system unit 230 disposed between the projection unit 300 and the display screen 100 includes, for example, a motherboard, a central processing unit, a graphics processing unit, or other common computer system components. However, the present invention is not limited thereto, and in other embodiments, the configuration (eg, location or composition) of the system unit 230 may also be adjusted according to actual product designs.

The following will exemplarily describe the operation mode of the projection type electronic device 10 and the appearance setting when it is idle. Please continue to refer to FIG. 1 , FIG. 2A and FIG. 2B , when the display function of the projection electronic device 10 is turned on, the electrochromic layer 120 of the display screen 100 will be switched to a non-transmissive state, so that the projection lens of the projection unit 300 is turned on. The image beam IB emitted by 310 can be directly imaged on the projection area PA of the display screen 100 .

For example, when the cover 220 is moved from the shielding position P2 (as shown in FIG. 5B ) to the open position P1, the electrochromic layer 120 can be switched to the non-transmitting state synchronously, and the projection unit can be driven after the cover 220 stops moving The projection lens 310 of the display screen 100 projects an image beam IB toward the projection area PA of the display screen 100 , and the image beam IB forms an image frame IM in the projection area PA of the display screen 100 . That is to say, by opening the cover 220, the state switching of the display screen 100 and the opening of the projection function can be simultaneously triggered, but the present invention is not limited to this. In other embodiments, the state switching of the display screen 100 and the enabling of the projection function can also be performed by means of a wireless remote control, for example, a remote control or a mobile phone is used to send an enabling instruction. Of course, the opening of the cover 220 , the state switching of the display screen 100 and the opening of the projection function can also be triggered through the switch buttons on the host 200 .

In this embodiment, the substrate 110 , the projection area PA and the electrochromic layer 120 (or the transparent conductive layer 121 ) of the display screen 100 respectively have a substrate length L0 , a projected length L1 and a discoloration length L2 in the longitudinal direction X, and the substrate The substrate length L0 of the 110 , the projection length L1 of the projection area PA and the discoloration length L2 of the electrochromic layer 120 are substantially equal. On the other hand, the substrate 110 and the electrochromic layer 120 (or the transparent conductive layer 121 ) of the display screen 100 respectively have a substrate width W2 and a discoloration width W1 in the discoloration direction Y, and the discoloration width W1 of the electrochromic layer 120 and the substrate The substrate widths W2 of 110 are substantially equal. That is to say, in the present embodiment, the electrochromic layer 120 may cover the entire surface 110s of the substrate 110 , and the image frame IM projected by the projection area PA of the display screen 100 or the projection unit 300 onto the display screen 100 is in the longitudinal direction. The display screen 100 may be covered all over the X, and the other side edge 110d of the substrate 110 opposite to the side edge 110e may be substantially cut in the discoloration direction Y. As shown in FIG. That is, the projection-type electronic device 10 of this embodiment can achieve a (three-sided) borderless display effect.

As can be seen from FIG. 2B , the host 200 has a first surface 200a facing the display screen 100 and a second surface 200b connected to the first surface 200a. In this embodiment, the side edge 110e of the substrate 110 of the display screen 100 can be selectively aligned with the second surface 200b of the host 200, but not limited thereto. Since the two parts of the electrochromic layer 120 overlapping the projection area PA and the non-projection area NPA are switched to the non-transmissive state synchronously, when the user operates on the side of the display screen 100 away from the host 200 and looks in the direction Z When it goes, the host 200 attached to the non-projection area NPA will be completely shielded by the display screen 100 . Accordingly, the appearance of the projection electronic device 10 during operation can be improved, and the visual aesthetic feeling of the display screen floating in the air can be created.

Referring to FIGS. 4 , 5A and 5B, when the display function of the projection electronic device 10 is turned off (ie, when the projection function is turned off), the electrochromic layer 120 of the display screen 100 is switched to a light-transmitting state to allow the The visibility of the display screen 100 is significantly reduced, which helps to improve the appearance of the projection electronic device 10 when it is idle. For example, when the cover 220 moves from the opening position P1 (as shown in FIG. 2B ) to the shielding position P2 , the projection lens 310 stops projecting the image beam IB (as shown in FIG. 2B ), and synchronously releases the electrochromic layer 120 is switched from a non-transmissive state to a translucent state. That is to say, by closing the cover 220, the state switching of the display screen 100 and the closing of the projection function can be simultaneously triggered, but the present invention is not limited to this. In other embodiments, the state switching of the display screen 100 and the closing of the projection function can also be performed by means of a wireless remote control, for example, a remote control or a mobile phone is used to send a closing command. Of course, the closing of the cover 220 , the switching of the state of the display screen 100 and the closing of the projection function can also be triggered through the switch button on the host 200 .

It is particularly mentioned that, in order to integrate the image image IM into the environment behind the display screen 100 (that is, to provide the user with an immersive visual experience), in some embodiments, the electrochromic layer 120 can also be switched to half Translucent state. That is to say, the aforementioned state switching is not limited to the non-transmissive state and the translucent state, and the transmittance of the display screen 100 can also be adjusted according to actual application requirements. For example, when the projection electronic device 10 is idle for a long time When the screen saver is activated, the display screen 100 can be switched to the semi-transparent state synchronously, so that the idle screen set by the user can be integrated into the scene behind the display screen 100, so as to improve the user's visual experience in different usage scenarios .

Hereinafter, other embodiments will be listed to describe the present disclosure in detail, wherein the same components will be marked with the same symbols, and the description of the same technical content will be omitted.

FIG. 6 is a schematic rear view of a projection type electronic device according to a second embodiment of the present invention. FIG. 7 is a schematic side view of the projection type electronic device of FIG. 6 . Referring to FIGS. 6 and 7 , the difference between the projection type electronic device 11 of the present embodiment and the projection type electronic device 10 of FIGS. 2A and 2B is only that the position of the host attached to the display screen is different. In this embodiment, the side edge 110e of the display screen 100 of the projection electronic device 11 is not aligned with the second surface 200b of the host 200A. Specifically, the projection area PA of the display screen 100 and the host 200A have a projection width Wa and a host width Wb in the discoloration direction Y, respectively, and between the projection area PA of the display screen 100 and the second surface 200b of the host 200A in the discoloration direction Y has a first distance La, and the projection width Wa of the projection area PA, the host width Wb of the host 200A, and the first distance La between the projection area PA and the second surface 200b of the host 200A satisfy the following relationship: 0.95≦Wa/ (Wa+La-Wb)≦1. Accordingly, the visibility of the host 200A when the display function is turned on can be reduced, which helps to create a visual aesthetic feeling that the display screen is suspended in the air.

On the other hand, the substrate 110 overlaps the side edge 110e of the host 200A in the direction Z and the second surface 200b of the host 200A has a second distance Lb in the discoloration direction Y, and the second distance Lb is greater than or equal to 0 and less than is equal to the first distance La. For example, on the premise of satisfying the size relationship here, when the second distance Lb is large and La is small, the floating feeling of the display screen can be further improved, and the projection area of the projection area PA can be increased.

FIG. 8 is a schematic rear view of a projection type electronic device according to a third embodiment of the present invention. FIG. 9 is a schematic cross-sectional view of a display screen of the projection electronic device of FIG. 8 . Referring to FIGS. 8 and 9 , the difference between the projection type electronic device 12 of this embodiment and the projection type electronic device 10 of FIG. 2A is: the size relationship between the electrochromic layer and the substrate is different, and the size of the projection area and the electrochromic layer is different Relationships are different. In this embodiment, the size of the electrochromic layer 120A of the display screen 100A is smaller than the size of the substrate 110 in either the length direction X or the color changing direction Y. For example, the discoloration length L2 ′ of the electrochromic layer 120A (ie, the laminated structure of the transparent conductive layer 121A, the transparent conductive layer 122A and the electrochromic material layer 123A) in the longitudinal direction X is the same as that of the substrate 110 in the longitudinal direction X. The ratio of the length L0 of the substrate to 0.95 may be greater than or equal to 0.95 and less than 1. Similarly, the ratio of the discoloration width W1' of the electrochromic layer 120A in the discoloration direction Y to the substrate width W2 of the substrate 110 in the discoloration direction Y may be greater than or equal to 0.95 and less than 1. Accordingly, the process flexibility of the display screen 100A can be increased.

On the other hand, unlike the display screen 100 of FIG. 2A , the projection length L1 ′ of the projection area PA′ of the display screen 100A of the present embodiment in the longitudinal direction X may be smaller than the discoloration length of the electrochromic layer 120A in the longitudinal direction X L2', and the ratio of the projected length L1' to the discoloration length L2' may be greater than or equal to 0.95 and less than 1. Therefore, the ratio of the projected length L1' of the projected area PA' to the substrate length L0 of the substrate 110 may be greater than or equal to 0.9 and less than 1. That is, the non-projection area NPA' of the present embodiment may surround the projection area PA', and the non-projection area NPA' is not completely provided with the electrochromic layer 120A. Accordingly, the operation flexibility of the projection lens can be increased, and the display effect of the (ultra) narrow frame can be realized.

FIG. 10 is a schematic rear view of a projection type electronic device according to a fourth embodiment of the present invention. Referring to FIG. 10 , the difference between the projection type electronic device 13 of this embodiment and the projection type electronic device 12 of FIG. 8 is that the outline of the display screen is different and the fitting position of the display screen and the host is different. In this embodiment, the substrate 110B has a side edge 110f closer to the host 200 and a protruding portion 111 disposed on the side edge 110f. The protruding portion 111 overlaps the host 200 in the direction Z. As shown in FIG. More specifically, the display screen 100B is attached to the host 200 through the protruding portion 111 , so the connector 150 may be provided on the protruding portion 111 .

It is worth noting that the non-projection area NPA" of the display screen 100B and the electrochromic layer 120B can be extended to the protruding portion 111, so as to shield a part of the host 200 when the display function is turned on, and at the same time create a display screen floating in the air. Visual aesthetics. On the other hand, in this embodiment, the side edge 111e of the protruding portion 111 is not aligned with the second surface 200b of the host 200, but not limited to this. In other embodiments, the protruding portion 111 The side edge 111e of the mainframe 200 can also be cut flush with the second surface 200b of the mainframe 200 to further increase the shielding area of the mainframe 200 .

11 is a schematic rear view of a projection type electronic device according to a fifth embodiment of the present invention. FIG. 12 is a schematic side view of the projection type electronic device of FIG. 11 . It is particularly noted that, for the sake of clarity, FIG. 11 omits the illustration of the host 200 in FIG. 12 . Referring to FIG. 11 and FIG. 12 , the difference between the projection type electronic device 14 of the present embodiment and the projection type electronic device 12 of FIG. 8 is that the connectors are arranged differently. Specifically, unlike the connector 150 in FIG. 8 , which is disposed at a position close to the side edge 110e of the display screen 100A, the projection electronic device 14 of this embodiment further includes a flexible circuit board 160 , and the connector 150A is disposed on the flexible circuit board 160 on.

For example, the flexible circuit board 160 has opposite ends (eg, the end 160a and the end 160b), the end 160a may be provided with a plurality of pins (not shown), and the end 160b is provided with a connector 150A. The flexible circuit board 160 is electrically connected to the display screen 100A through the pins on the end portion 160a. The end portion 160b of the flexible circuit board 160 can be folded to one side of the second surface 200b of the host 200, and is electrically connected to the host 200 through the connector 150A. That is to say, the host 200 of this embodiment can transmit electronic signals to the display screen 100A through the flexible circuit board 160 to control the opening or closing of the display screen 100A, and even provide the required state switching of the electrochromic layer 120A. voltage, but not limited thereto.

To sum up, in the projection-type electronic device of an embodiment of the present invention, the display screen has a projection area and a non-projection area that can be switched between a light-transmitting state and a non-light-transmitting state at the same time. When the display screen is in a non-light-transmitting state, the projection unit is used to project an image frame toward the projection area to achieve a display effect with a narrow frame or no frame. At the same time, under the cover of the display screen, the host attached to the non-projection area can create a visual aesthetic that the display screen is suspended in the air. On the other hand, when the display function of the projection electronic device is turned off, its electrochromic layer will be switched to a light-transmitting state, which significantly reduces the visibility of the display screen, which helps to improve the appearance of the projection electronic device when it is idle. taste.

Although the present invention has been disclosed above by the embodiments, it is not intended to limit the present invention. Anyone with ordinary knowledge in the technical field can make some changes and modifications without departing from the spirit and scope of the present invention. Therefore, The protection scope of the present invention shall be determined by the scope of the appended patent application.

10, 11, 12, 13, 14: Projection electronic devices 100, 100A, 100B: Display screen 110, 110B: substrate 110d, 110e, 110f, 111e: side edge 110s: Surface 111: Projection 120, 120A, 120B: electrochromic layer 121, 121A, 122, 122A: transparent conductive layer 123, 123A: Electrochromic material layer 150, 150A: Connector 160: Flexible circuit board 160a, 160b: end 200, 200A: Mainframe 200a: First surface 200b: Second Surface 210: Shell 210a: Opening 220: Cover 230: System Unit 300: Projection unit 310: Projection Lens IB: Image Beam IM: Video screen La: first distance Lb: second distance L0: substrate length L1, L1': projection length L2, L2': discoloration length NPA, NPA’, NPA”: non-projected area PA, PA': Projection area P1: open position P2: Shading position W1, W1': discoloration width W2: substrate width Wa: Projection width Wb: host width X: length direction Y: color change direction Z: direction

FIG. 1 is a schematic top view of a projection type electronic device according to a first embodiment of the present invention. FIG. 2A is a schematic rear view of the projection type electronic device of FIG. 1 . FIG. 2B is a schematic side view of the projection type electronic device of FIG. 1 . FIG. 3 is a schematic cross-sectional view of a display screen of the projection electronic device of FIG. 1 . FIG. 4 is a schematic top view of the projection type electronic device of FIG. 1 when the display function is turned off. FIG. 5A is a schematic rear view of the projection type electronic device of FIG. 4 . FIG. 5B is a schematic side view of the projection type electronic device of FIG. 4 . FIG. 6 is a schematic rear view of a projection type electronic device according to a second embodiment of the present invention. FIG. 7 is a schematic side view of the projection type electronic device of FIG. 6 . FIG. 8 is a schematic rear view of a projection type electronic device according to a third embodiment of the present invention. FIG. 9 is a schematic cross-sectional view of a display screen of the projection electronic device of FIG. 8 . FIG. 10 is a schematic rear view of a projection type electronic device according to a fourth embodiment of the present invention. 11 is a schematic rear view of a projection type electronic device according to a fifth embodiment of the present invention. FIG. 12 is a schematic side view of the projection type electronic device of FIG. 11 .

10: Projection electronic device

100: Display screen

110: Substrate

110d, 110e: side edge

120: Electrochromic layer

150: Connector

200: host

IM: Video screen

L1: Projection length

L2: discoloration length

NPA: Non-Projected Area

PA: Projection area

W1: discoloration width

W2: substrate width

X: length direction

Y: color change direction

Z: direction

Claims (18)

A projection type electronic device, comprising: a display screen with a projection area and a non-projection area, and comprising: a substrate; and an electrochromic layer disposed on the substrate and overlapping the projection area and the non-projection area area, the two parts of the electrochromic layer located in the projection area and the non-projection area are suitable for switching between a light-transmitting state and a non-light-transmitting state at the same time; a host is attached to the non-projection area of the display screen; and a projection unit disposed in the host and adapted to project an image beam toward the projection area of the display screen, wherein the host has a first surface disposed opposite the non-projection area of the display screen and connected to the first surface A second surface of a surface, there is a first distance La in a color changing direction between the projection area of the display screen and the second surface of the host, and the substrate also has a side overlapping the first surface There is a second distance between the side edge of the substrate and the second surface of the host in the discoloration direction, and the second distance is greater than or equal to 0 and less than or equal to the first distance La. The projection type electronic device as claimed in claim 1, further comprising a connector adjacent to the side edge of the substrate, wherein the host transmits an electronic signal to the display screen through the connector. The projection-type electronic device as claimed in claim 2, wherein the electronic signal is a switch signal and is used to trigger the electrochromic layer to switch to the light-transmitting state or the non-light-transmitting state. The projection-type electronic device as claimed in claim 1, further comprising: a flexible circuit board electrically connected to the display screen; and a connector disposed on the flexible circuit board, wherein the host transmits a Electronic signal to the display screen. The projection type electronic device as claimed in claim 1, further comprising a connector, wherein the substrate further has a protruding portion disposed on the side edge, the protruding portion overlaps the host, and the non-projection area extends to the protruding portion an outgoing part, and the connector is arranged on the protruding part. The projection type electronic device according to claim 1, wherein the material of the substrate of the display screen comprises acrylic or mylar film. The projection electronic device according to claim 1, wherein the electrochromic layer comprises: two transparent conductive layers; and an electrochromic material layer sandwiched between the transparent conductive layers, wherein the transparent conductive layers A voltage is applied to adjust the light transmittance of the electrochromic material layer. The projection-type electronic device as claimed in claim 7, wherein the light transmittance of the electrochromic material layer is adjusted to be the light-transmitting state or the non-light-transmitting state. The projection-type electronic device according to claim 7, wherein the material of the electrochromic material layer is a polymer-dispersed liquid crystal material. The projection type electronic device as claimed in claim 7, wherein the projection area has a projection length in a length direction, and the transparent conductive layers are respectively in the length direction. There is a discoloration length in the degree direction, and the ratio of the projected length to the discoloration length is between 0.95 and 1. The projection type electronic device as claimed in claim 7, wherein the substrate has a substrate length in a longitudinal direction, each of the transparent conductive layers has a discoloration length in the longitudinal direction, and the discoloration length is different from the substrate length. The ratio is between 0.95 and 1. The projection-type electronic device of claim 11, wherein the projection area has a projection length in the longitudinal direction, and a ratio of the projection length to the substrate length is between 0.9 and 1. The projection type electronic device according to claim 11, wherein each of the transparent conductive layers has a discoloration width in the discoloration direction, the discoloration direction intersects the length direction, and the substrate has a substrate width in the discoloration direction, And the ratio of the projected width to the substrate width is between 0.95 and 1. The projection-type electronic device as claimed in claim 1, wherein the projection area of the display screen and the host have a projection width Wa and a host width Wb respectively in the color changing direction, and the projection width Wa, the host width Wb The first distance La satisfies the following relational expression: 0.95≦Wa/(Wa+La−Wb)≦1. The projection-type electronic device as claimed in claim 1, wherein the host comprises: a casing having an opening exposing a projection lens of the projection unit; and a cover movably disposed on the casing and adapted to move to a masked position to The opening of the casing is shielded. The projection type electronic device as claimed in claim 15, wherein the cover is further adapted to be moved to an open position to expose the opening of the housing and drive the projection lens of the projection unit to face the projection area of the display screen The image beam is projected. The projection type electronic device as claimed in claim 16, wherein the image beam forms an image frame on the display screen. The projection type electronic device as claimed in claim 16, wherein when the cover moves to the open position, the electrochromic layer switches to the non-transmitting state, and when the cover moves to the cover position, the electrochromic layer Switch to this light-transmitting state.

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