CN107229130B - Display apparatus and display method - Google Patents
Display apparatus and display method Download PDFInfo
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- CN107229130B CN107229130B CN201610179426.7A CN201610179426A CN107229130B CN 107229130 B CN107229130 B CN 107229130B CN 201610179426 A CN201610179426 A CN 201610179426A CN 107229130 B CN107229130 B CN 107229130B
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- G02B30/00—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images
- G02B30/20—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes
- G02B30/26—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the autostereoscopic type
- G02B30/27—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the autostereoscopic type involving lenticular arrays
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Abstract
The present disclosure discloses a display apparatus, including: the display device comprises a control unit, a display driving unit, a barrier driving unit, a display panel and a liquid crystal barrier panel; the liquid crystal barrier panel is positioned above the display panel; the control unit sends a display image frame to the display driving unit; sending a barrier control instruction to a barrier driving unit; the display driving unit drives the display panel to display and display image frames on a plurality of display areas which are arranged in parallel and at intervals, and each display area is used for respectively displaying a part of display content in the display image frames; the barrier driving unit drives the liquid crystal barrier panel to form liquid crystal barriers on a plurality of liquid crystal barrier areas which are arranged in parallel and at intervals; the display content displayed in each display area is transmitted to a preset visual range through a light transmission area between two adjacent liquid crystal barrier areas on the liquid crystal barrier panel. The present disclosure provides a display device that provides a visible range of narrow viewing angles.
Description
Technical Field
The present disclosure relates to the field of image display technologies, and in particular, to a display device and a display method.
Background
A display screen is one of the most common input and output devices on an electronic device. The display screen has the capability of displaying text information, image information and video information.
The current display screen is a wide-viewing-angle display screen generally, and the viewing angle is approximately in the range of 120-170 degrees. When a user uses the electronic device in a crowded place such as a bus and a subway, the user is likely to be seen by other people around the user to see the content on the display screen, and the privacy of the user is leaked.
Disclosure of Invention
In order to solve the problem that when the display screen is a wide-viewing-angle display screen, other people around the display screen can easily see the content on the display screen, and the privacy of a user is leaked, the disclosure provides a display device and a display method. The technical scheme is as follows:
according to a first aspect of embodiments of the present disclosure, there is provided a display apparatus including: the display driving unit is connected with the control unit; a display panel connected to the display driving unit; a liquid crystal barrier panel connected to the barrier driving unit; the liquid crystal barrier panel is positioned above the display panel;
a control unit for transmitting the display image frame to the display driving unit; sending a barrier control instruction to a barrier driving unit;
the display driving unit is used for driving the display panel to display and display image frames on a plurality of display areas which are arranged in parallel and at intervals, and each display area is used for respectively displaying and displaying a part of display content in the image frames;
the barrier driving unit is used for driving the liquid crystal barrier panel to form liquid crystal barriers on a plurality of liquid crystal barrier areas which are arranged in parallel and at intervals;
the display content displayed in each display area is transmitted to a preset visual range through a light transmission area between two adjacent liquid crystal barrier areas on the liquid crystal barrier panel.
In one possible embodiment, the display driving unit is configured to determine, on the display panel, positions of a plurality of display areas arranged in parallel and at intervals according to pre-stored first position information; splitting the display image frame to obtain display contents corresponding to each display area; driving each display area to display the corresponding display content according to the position;
or the control unit is also used for sending a first position determination instruction to the display driving unit; the display driving unit is used for determining the positions of a plurality of display areas which are arranged in parallel and at intervals on the display panel according to the first position determination instruction; splitting the display image frame to obtain display contents corresponding to each display area; and driving each display area to display the corresponding display content according to the position.
In one possible embodiment, the barrier driving unit is configured to determine positions of a plurality of liquid crystal barrier regions arranged in parallel and at intervals on the liquid crystal barrier panel according to pre-stored second position information; driving each liquid crystal barrier region according to the position to form a liquid crystal barrier;
or, the control unit is also used for sending a second position determination instruction to the barrier driving unit; the barrier driving unit is used for determining the positions of a plurality of liquid crystal barrier areas which are arranged in parallel and at intervals on the liquid crystal barrier panel according to the second position determination instruction; each liquid crystal barrier region is driven according to a position to form a liquid crystal barrier.
In one possible embodiment, the control unit is further configured to send a state switching instruction to the display driving unit and the barrier driving unit when the operating state is switched from the narrow viewing angle operating state to the wide viewing angle operating state;
the display driving unit is used for driving the display panel to display a display image frame on the whole display area after receiving the state switching instruction;
and the barrier driving unit is used for driving the liquid crystal barrier panel to cancel the formation of the liquid crystal barrier after receiving the state switching indication.
In one possible embodiment, the predetermined visual range is a range determined according to the interocular distance of the human eye.
In a possible embodiment, the display driving unit is further configured to drive an idle region between two adjacent display regions on the display panel to be in an inactive state, or drive the idle region on the display panel to display a predetermined disguised display content.
According to a second aspect of the embodiments of the present disclosure, there is provided a display method applied to a display device including a control unit, a display driving unit connected to the control unit, and a barrier driving unit; a display panel connected to the display driving unit; a liquid crystal barrier panel connected to the barrier driving unit; the liquid crystal barrier panel is positioned above the display panel, and the method comprises the following steps:
the control unit sends a display image frame to the display driving unit; sending a barrier control instruction to a barrier driving unit;
the display driving unit drives the display panel to display and display image frames on a plurality of display areas which are arranged in parallel and at intervals, and each display area is used for respectively displaying a part of display content in the display image frames;
the barrier driving unit drives the liquid crystal barrier panel to form liquid crystal barriers on a plurality of liquid crystal barrier areas which are arranged in parallel and at intervals;
the display content displayed in each display area is transmitted to a preset visual range through a light transmission area between two adjacent liquid crystal barrier areas on the liquid crystal barrier panel.
In one possible embodiment, the display driving unit determines the positions of a plurality of display areas which are arranged in parallel and at intervals on the display panel according to pre-stored first position information; splitting the display image frame to obtain display contents corresponding to each display area; driving each display area to display the corresponding display content according to the position;
or the control unit sends a first position determination instruction to the display driving unit; the display driving unit determines the positions of a plurality of display areas which are arranged in parallel and at intervals on the display panel according to the first position determination instruction; splitting the display image frame to obtain display contents corresponding to each display area; and driving each display area to display the corresponding display content according to the position.
In one possible embodiment, the barrier driving unit determines the positions of a plurality of liquid crystal barrier areas which are arranged in parallel and at intervals on the liquid crystal barrier panel according to the pre-stored second position information; driving each liquid crystal barrier region according to the position to form a liquid crystal barrier;
or the control unit sends a second position determination instruction to the barrier driving unit; the barrier driving unit determines the positions of a plurality of liquid crystal barrier areas which are arranged in parallel and at intervals on the liquid crystal barrier panel according to the second position determination instruction; each liquid crystal barrier region is driven according to a position to form a liquid crystal barrier.
In one possible embodiment, when the working state is switched from the narrow viewing angle working state to the wide viewing angle working state, the control unit sends a state switching instruction to the display driving unit and the barrier driving unit;
the display driving unit drives the display panel to display a display image frame on the whole display area after receiving the state switching instruction;
the barrier driving unit drives the liquid crystal barrier panel to cancel forming the liquid crystal barrier after receiving the state switching indication.
In one possible embodiment, the predetermined visual range is a range determined according to the interocular distance of the human eye.
In one possible embodiment of the method according to the invention,
the display driving unit drives an idle area between two adjacent display areas on the display panel to be in a non-operating state, or drives the idle area on the display panel to display preset camouflage display content.
The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects:
the display driving unit drives the display panel to display and display image frames on a plurality of display areas which are arranged in parallel and at intervals, and each display area is used for respectively displaying a part of display content in the display image frames; the barrier driving unit drives the liquid crystal barrier panel to form liquid crystal barriers on a plurality of liquid crystal barrier areas which are arranged in parallel and at intervals; the display content displayed by each display area is shot to a preset visual range through a light transmission area between two adjacent liquid crystal barrier areas on the liquid crystal barrier panel; the problem that when the display screen is a wide-viewing-angle display screen, other people around the display screen can easily see the content on the display screen, so that the privacy of a user is revealed is solved; the effect of limiting the visual range of the display panel to be within the predetermined visual range, and the displayed image frames on the display panel cannot be seen or cannot be seen completely outside the predetermined visual range is achieved.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.
FIG. 1 is a block diagram illustrating a display device according to an exemplary embodiment;
fig. 2 is an operational schematic diagram of a display panel and a liquid crystal barrier panel according to another exemplary embodiment when in a narrow viewing angle operational state;
FIG. 3 is a diagram illustrating the effect of a displayed image frame when displayed in a display device according to another exemplary embodiment;
FIG. 4 is a schematic diagram illustrating the principle of a display panel and a liquid crystal barrier panel when in a narrow viewing angle operating state according to another exemplary embodiment;
FIG. 5 is a flow chart illustrating a display method according to an exemplary embodiment;
fig. 6 is a flowchart illustrating a display method according to another exemplary embodiment.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.
The disclosed embodiments aim to provide a display screen and a display method with a narrower viewing angle. Optionally, the display screen can be switched between a wide viewing angle mode and a narrow viewing angle mode.
Fig. 1 is a block diagram illustrating a display device 100 according to an exemplary embodiment. The display apparatus 100 may implement display of a narrow viewing angle by a parallax barrier method. As shown in fig. 1, the display device 100 includes:
a control unit 120, a display driving unit 142 and a barrier driving unit 162 connected to the control unit 120; a display panel 144 connected to the display driving unit 142; a liquid crystal barrier panel 164 connected to the barrier driving unit 162; the liquid crystal barrier panel 164 is positioned on the display panel 144. Wherein:
the control unit 120 may be a processor or a graphics processor. The control unit 120 has the capability of outputting display image frames and issuing control instructions.
The display driving unit 142 includes a liquid crystal driving circuit for driving the display panel 144 to display. The Display panel 144 may be an LCD (Liquid Crystal Display) panel or an OLED (Organic Light-Emitting Display) panel. The display panel 144 typically includes a liquid crystal layer and a backlight layer therein.
The barrier driving unit 162 includes a barrier driving circuit, which is also one of liquid crystal driving circuits, for driving the liquid crystal barrier panel 164 to form a liquid crystal barrier. The liquid crystal barrier is a parallax barrier that does not transmit light or has light transmittance lower than a predetermined condition. The liquid crystal barrier is formed by driving liquid crystal molecules in the liquid crystal barrier panel to twist by the barrier driving unit 162.
Referring to fig. 2 in combination, fig. 2 shows a schematic diagram of the operation of the display panel 144 and the liquid crystal barrier panel 164 in a narrow viewing angle operating state. The left-hand portion (a) of fig. 2 is a schematic side view of the display panel 144 and the liquid crystal barrier panel 164. The liquid crystal barrier panel 164 is positioned above the display panel 144. The upper right (b) portion in fig. 2 is a schematic front view of the liquid crystal barrier panel 164; the lower right (c) portion in fig. 2 is a schematic front view of the display panel 144.
When in the narrow viewing angle operating state, the control unit 120 sends a display image frame to the display driving unit 142; a barrier control instruction is sent to the barrier driving unit 162.
The display driving unit 142 is configured to drive the display panel 144 to display a display image frame on a plurality of display areas 143 arranged in parallel and at intervals, where each display area 143 is configured to display a portion of the display content in the display image frame 10. The union of the display contents displayed by all the display areas 143 is the same as the display image frame.
In other words, the display image frame is divided into a plurality of bar-shaped display contents, each of which is displayed in one of the display areas 143. Each display area 143 is a rectangular bar-shaped display area. The idle region 145 between two adjacent display regions 143 may not display any content.
In a possible implementation, the length and the width of each display region 143 are the same, for example, the length of each display region 143 is 1080 pixels, and the width is 5 pixels. In a possible implementation, the width of the idle regions 145 between each display region 143 is the same, for example, the width of each idle region 145 is 3 pixels. In a possible implementation, there are at least two display areas 143 that have the same length but different widths, for example, the width of the display area 143 in the central area is greater than the width of the display area 143 in the edge area. In a possible implementation, there are at least two idle regions 145 with the same length but different widths, for example, the width of the idle region 145 in the central region is greater than the width of the idle region 145 in the edge region. The embodiments of the present disclosure do not limit this.
A barrier driving unit 162 for driving the liquid crystal barrier panel 164 to form a liquid crystal barrier on a plurality of liquid crystal barrier regions 163 arranged in parallel and at intervals; the liquid crystal barrier is a parallax barrier that does not transmit light or has light transmittance lower than a predetermined condition. The liquid crystal barrier can block the display content below the liquid crystal barrier.
In a possible implementation, the length and width of each liquid crystal barrier region 163 are the same, for example, the length of each liquid crystal barrier region 163 is 1080 pixels and the width is 2 pixels. In a possible implementation, the width of the light-transmitting region 165 between each liquid crystal barrier region 163 is also the same, for example, the width of each light-transmitting region 165 is 3 pixels. In a possible implementation, there are at least two liquid crystal barrier regions 163 having the same length but different widths, for example, the width of the liquid crystal barrier region 163 located at the central region is greater than the width of the liquid crystal barrier region 163 located at the edge region. In a possible implementation, there are at least two light-transmitting regions 165 that have the same length but different widths, e.g., the width of the light-transmitting region 165 in the central region is greater than the width of the light-transmitting region 165 in the edge region. The embodiments of the present disclosure do not limit this.
The display content displayed in each display region 143 is transmitted through the light-transmitting region 165 between two adjacent liquid crystal barrier regions 163 on the liquid crystal barrier panel 164 to the predetermined visible range. That is, the display image frame 10 is divided into a plurality of pieces of display contents to be displayed when displayed by the display device 100, and a front view of the final display screen may refer to the schematic illustration in fig. 3. In the actual use process, the width of the liquid crystal barrier between the two display contents is small, so that the influence on the final display effect observed by the naked eyes of a user can be reduced as much as possible.
With continued reference to fig. 4, let the left side in fig. 4 be the first direction and the right side be the second direction. Each display area 143 has an edge a in the first direction and an edge b in the second direction; two liquid crystal barrier regions 163 are provided above each display region 143. One of the liquid crystal barrier regions 163 has an edge c in the second direction, and the other liquid crystal barrier region 163 has an edge d in the first direction; the predetermined visible range has an edge e in the first direction and an edge f in the second direction.
For each display area 143, the rule is satisfied between the edges: the edge a, the edge c, and the edge e are located in the same plane, and the edge b, the edge d, and the edge f are located in the same plane, thereby ensuring that the display content in each display region 143 is completely visible only within a predetermined visible range. It should be noted that the design of the display area 143 at the extreme edge may be different from that of fig. 4.
In addition, since the predetermined visible range is an area for both eyes of the user to see, the width of the predetermined visible range is set according to the eye-to-eye distance of the human eye, and the width ef is generally slightly larger than the eye-to-eye distance of the human eye. That is, the predetermined visible range is a range set according to the interocular distance of the human eye.
In one possible implementation, the display area 143 is fixed in position on the display panel 144 and the liquid crystal barrier area 163 is fixed in position on the liquid crystal barrier panel 164. That is, the predetermined visible range is fixed. At this time:
the display driving unit 142 is used for determining the positions of a plurality of display areas 143 which are arranged in parallel and at intervals on the display panel 144 according to the pre-stored first position information; splitting the display image frame to obtain display contents corresponding to each display area 143; and driving each display area 143 to display the corresponding display content according to the position.
A barrier driving unit 162 for determining the positions of a plurality of liquid crystal barrier regions 163 arranged in parallel and at intervals on the liquid crystal barrier panel 164 according to the pre-stored second position information; each liquid crystal barrier region 163 is driven according to the position to form a liquid crystal barrier.
In another possible implementation, the position of the human eye is variable, and the distance G between the human eye and the liquid crystal barrier panel 164 is variable, so that the predetermined visible range is variable. At this time:
a control unit 120, further configured to send a first position determination instruction to the display driving unit 142; the display driving unit 142 is used for determining the positions of a plurality of display areas 143 which are arranged in parallel and at intervals on the display panel 144 according to the first position determination instruction; splitting the display image frame to obtain display contents corresponding to each display area 143; and driving each display area 143 to display the corresponding display content according to the position.
Or, the control unit 120 is further configured to send a second position determination instruction to the barrier driving unit 162; a barrier driving unit 162 for determining the positions of a plurality of liquid crystal barrier regions arranged in parallel and at intervals on the liquid crystal barrier panel 164 according to the second position determination instruction; and driving each liquid crystal barrier region according to the position to form a liquid crystal barrier.
Wherein the first position determination instruction is for indicating a position of each display area 143; the second position determination instruction is for indicating the position of each liquid crystal barrier region 163.
Alternatively, when the position of each display region 143 is fixed, the control unit 120 dynamically determines the position of each liquid crystal barrier region 163 according to the rule shown in fig. 4, based on the pitch ef of the human eyes, the projection coordinates of the human eyes on the liquid crystal barrier panel 164, and the distance G between the human eyes and the liquid crystal barrier panel 164, and the distance L between the liquid crystal barrier panel 164 and the display panel 144.
Alternatively, when the position of each liquid crystal barrier region 163 is fixed, the control unit 120 dynamically determines the position of each display region 143 according to the rule shown in fig. 4, based on the pitch ef of the human eyes, the projection coordinates of the human eyes on the liquid crystal barrier panel 164, and the distance G between the human eyes and the liquid crystal barrier panel 164, and the distance L between the liquid crystal barrier panel 164 and the display panel 144.
The embodiment of the present disclosure does not limit how the control unit 120 obtains the distance ef between the human eyes, the projection coordinates of the human eyes on the liquid crystal barrier panel 164, and the distance G between the human eyes and the liquid crystal barrier panel 164, and the control unit 120 may obtain the above parameters through a front camera, a distance sensor, and other devices.
In summary, the display device provided in this embodiment drives the display panel to display the image frames on the plurality of display areas arranged in parallel and at intervals through the display driving unit, where each display area is used for displaying a part of the display content in the image frame; the barrier driving unit drives the liquid crystal barrier panel to form liquid crystal barriers on a plurality of liquid crystal barrier areas which are arranged in parallel and at intervals; the display content displayed by each display area is shot to a preset visual range through a light transmission area between two adjacent liquid crystal barrier areas on the liquid crystal barrier panel; the problem that when the display screen is a wide-viewing-angle display screen, other people around the display screen can easily see the content on the display screen, so that the privacy of a user is revealed is solved; the effect of limiting the visual range of the display panel to be within the predetermined visual range, and the displayed image frames on the display panel cannot be seen or cannot be seen completely outside the predetermined visual range is achieved.
In an alternative embodiment, the display device 100 has two modes of operation: a wide view angle mode of operation and a narrow view angle mode of operation. The display device 100 can be switched between two modes.
When switching from the wide viewing angle operating mode to the narrow viewing angle operating mode, the control unit 120 sends a first state switching instruction to the display driving unit 142 and the barrier driving unit 162, and the display driving unit 142 and the barrier driving unit 162 operate according to the above-described operating manner.
When switching from the narrow viewing angle operating mode to the wide viewing angle operating mode, the control unit 120 sends a second state switching instruction to the display driving unit 142 and the barrier driving unit 162, and the display driving unit 142 is configured to drive the display panel 142 to display a display image frame on the entire display area after receiving the second state switching instruction, that is, in the normal operating mode; and a barrier driving unit 162 for driving the liquid crystal barrier panel 164 to cancel forming the liquid crystal barrier, that is, the entire liquid crystal barrier panel is in a transparent state or a semi-transparent state having a transparency higher than a predetermined value, after receiving the second state switching indication.
The embodiment can meet the display requirements of users in different use scenes by providing two optional working modes.
In another alternative embodiment, when the display apparatus 100 is in the narrow viewing angle operation mode, the idle region 145 between two adjacent display regions 143 in the display panel 144 may display predetermined disguised display contents, which is display contents for viewing in a range outside the predetermined visible range. Disguised display content may disguise displayed image frames displayed within the display area 143, such as: if the displayed image frame is a game picture and the disguised display content is a web page picture, the game picture is seen within a predetermined visible range, but the web page picture is seen within a range outside the predetermined visible range.
FIG. 5 is a flow chart illustrating a display method according to an exemplary embodiment. The method is applied to a display device which comprises a control unit, a display driving unit and a barrier driving unit, wherein the display driving unit and the barrier driving unit are connected with the control unit; a display panel connected to the display driving unit; a liquid crystal barrier panel connected to the barrier driving unit; the liquid crystal barrier panel is positioned above the display panel, and the method comprises the following steps:
in step 501, the control unit sends a display image frame to the display driving unit; and sending a barrier control instruction to the barrier driving unit.
In step 502, the display driving unit drives the display panel to display a display image frame on a plurality of display regions arranged in parallel and at intervals, where each display region is used for respectively displaying a portion of display content in the display image frame.
In step 503, the barrier driving unit drives the liquid crystal barrier panel to form a liquid crystal barrier on the plurality of liquid crystal barrier regions arranged in parallel and at intervals.
The display content displayed in each display area is transmitted to a preset visual range through a light transmission area between two adjacent liquid crystal barrier areas on the liquid crystal barrier panel.
Here, step 502 and step 503 are steps executed in parallel.
In summary, in the display method provided in this embodiment, the display driving unit drives the display panel to display the image frames on the plurality of display areas arranged in parallel and at intervals, where each display area is used for displaying a part of the display content in the image frame; the barrier driving unit drives the liquid crystal barrier panel to form liquid crystal barriers on a plurality of liquid crystal barrier areas which are arranged in parallel and at intervals; the display content displayed by each display area is shot to a preset visual range through a light transmission area between two adjacent liquid crystal barrier areas on the liquid crystal barrier panel; the problem that when the display screen is a wide-viewing-angle display screen, other people around the display screen can easily see the content on the display screen, so that the privacy of a user is revealed is solved; the effect of limiting the visual range of the display panel to be within the predetermined visual range, and the displayed image frames on the display panel cannot be seen or cannot be seen completely outside the predetermined visual range is achieved.
Fig. 6 is a flowchart illustrating a display method according to another exemplary embodiment. In an alternative embodiment based on the embodiment shown in fig. 5, the method comprises:
in step 601, when in the narrow viewing angle working state, the control unit sends a display image frame to the display driving unit; and sending a barrier control instruction to the barrier driving unit.
Since the display stream typically includes a sequence of image frames consisting of one frame of display image frames, this step is performed periodically a plurality of times, or when changes occur in the display image frames.
For example, the control unit performs this step every 1/24 seconds.
In step 602, the display driving unit drives the display panel to display a display image frame on a plurality of display regions arranged in parallel and at intervals, where each display region is used for respectively displaying a portion of display content in the display image frame.
As a possible implementation manner, this step can be implemented as the following step instead:
1. the display driving unit determines the positions of a plurality of parallel display areas arranged at intervals on the display panel according to the pre-stored first position information.
2. The display driving unit splits the display image frame to obtain display contents corresponding to each display area.
3. And the display driving unit drives each display area to display the corresponding display content according to the position.
As another possible implementation, the control unit further sends the first position determination instruction to the display driving unit, and this step may alternatively be implemented as the following step:
1. the display driving unit determines the positions of a plurality of display areas which are arranged in parallel and at intervals on the display panel according to the first position determination instruction; the first position determination instruction is for indicating a position of each display area.
2. The display driving unit splits the display image frame to obtain display contents corresponding to each display area.
3. And the display driving unit drives each display area to display the corresponding display content according to the position.
In step 603, the barrier driving unit drives the liquid crystal barrier panel to form a liquid crystal barrier on the plurality of liquid crystal barrier regions arranged in parallel and at intervals.
As a possible implementation manner, this step can be implemented as the following step instead:
1. the barrier driving unit determines the positions of a plurality of liquid crystal barrier areas which are arranged in parallel and at intervals on the liquid crystal barrier panel according to the pre-stored second position information.
2. The barrier driving unit drives each liquid crystal barrier region to form a liquid crystal barrier according to the position.
As another possible implementation, the control unit further sends a second position determination instruction to the display driving unit, and this step may alternatively be implemented as the following step:
1. the barrier driving unit determines the positions of a plurality of liquid crystal barrier areas which are arranged in parallel and at intervals on the liquid crystal barrier panel according to the second position determination instruction; the second position determination instruction is for indicating a position of each liquid crystal barrier region.
2. The barrier driving unit drives each liquid crystal barrier region to form a liquid crystal barrier according to the position.
The display content displayed in each display area is transmitted to a preset visual range through a light transmission area between two adjacent liquid crystal barrier areas on the liquid crystal barrier panel. Alternatively, the predetermined visible range is a range determined according to a binocular distance of the human eye.
Here, step 602 and step 603 are steps executed in parallel.
In step 604, the control unit sends a state switching instruction to the display driving unit and the barrier driving unit when the operating state is switched from the narrow viewing angle operating state to the wide viewing angle operating state.
In step 605, the display driving unit drives the display panel to display a display image frame on the entire display area after receiving the state switching instruction.
In step 606, the barrier driving unit drives the liquid crystal barrier panel to cancel forming the liquid crystal barrier after receiving the state switching instruction.
Wherein, steps 605 and 606 are executed in parallel.
It should be noted that, when the operating state is switched from the wide-viewing-angle operating state to the narrow-viewing-angle operating state, the process is the reverse of the above steps 601 to 606, which is easily understood by those skilled in the art through the description of the above steps 601 to 606 and the description in the foregoing embodiment of the apparatus, and is not described herein again.
It should be noted that, when the operating state is the narrow viewing angle operating state, the display driving unit drives an idle region between two adjacent display regions on the display panel to be in the inactive state, or drives the idle region on the display panel to display predetermined disguised display contents.
Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.
Claims (4)
1. A display device, characterized in that the display device comprises: the display driving unit comprises a liquid crystal driving circuit; a display panel connected to the display driving unit; a liquid crystal barrier panel connected to the barrier driving unit; the liquid crystal barrier panel is positioned above the display panel;
the control unit is used for sending the display image frame to the display driving unit periodically or when the display image frame changes; sending a barrier control instruction to the barrier driving unit;
the display driving unit is used for driving the display panel to display the display image frames on a plurality of display areas which are arranged in parallel and at intervals, each display area is used for respectively displaying a part of display content in the display image frames, at least two display areas have the same length and different widths, and the display driving unit is also used for driving an idle area between two adjacent display areas on the display panel to be in a non-working state;
the control unit is further configured to determine, when the position of the display area is fixed, the positions of a plurality of liquid crystal barrier areas arranged in parallel and at intervals according to the distance between human eyes, the projection coordinates of the human eyes on the liquid crystal barrier panel, the distance between the human eyes and the liquid crystal barrier panel, and the distance between the liquid crystal barrier panel and the display panel, which are acquired by a front camera, and send a second position determination instruction to the barrier driving unit, where the second position determination instruction is configured to indicate the position of each liquid crystal barrier area;
the control unit is further configured to send a first position determination instruction to the display driving unit, where the first position determination instruction is used to indicate a position of each display area; the display driving unit is used for determining the positions of the plurality of display areas which are arranged in parallel and at intervals on the display panel according to the first position determination instruction; splitting the display image frame to obtain the display content corresponding to each display area; driving each display area to display the corresponding display content according to the position;
the barrier driving unit is used for determining the positions of the liquid crystal barrier areas which are arranged in parallel and at intervals on the liquid crystal barrier panel according to the second position determination instruction, and driving the liquid crystal barrier panel to form liquid crystal barriers on the liquid crystal barrier areas which are arranged in parallel and at intervals according to the positions;
the display content displayed by each display area penetrates through a light transmission area between two adjacent liquid crystal barrier areas on the liquid crystal barrier panel and is emitted to a preset visual range, and the preset visual range is a range determined according to the distance between two eyes of human eyes.
2. The display device according to claim 1,
the control unit is further used for sending a state switching instruction to the display driving unit and the barrier driving unit when the working state is switched from the narrow-view working state to the wide-view working state;
the display driving unit is used for driving the display panel to display the display image frame on the whole display area after receiving the state switching instruction;
and the barrier driving unit is used for driving the liquid crystal barrier panel to cancel the formation of the liquid crystal barrier after receiving the state switching indication.
3. The display method is characterized by being applied to a display device, wherein the display device comprises a control unit, a display driving unit and a barrier driving unit, wherein the display driving unit is connected with the control unit and comprises a liquid crystal driving circuit; a display panel connected to the display driving unit; a liquid crystal barrier panel connected to the barrier driving unit; the liquid crystal barrier panel is positioned over the display panel, the method comprising:
the control unit sends the display image frame to the display driving unit periodically or when the display image frame changes; sending a barrier control instruction to the barrier driving unit;
the display driving unit drives the display panel to display the display image frames on a plurality of display areas which are arranged in parallel and at intervals, each display area is used for respectively displaying a part of display content in the display image frames, at least two display areas have the same length and different widths, and the display driving unit is also used for driving an idle area between two adjacent display areas on the display panel to be in an inoperative state;
when the position of the display area is fixed, the control unit determines the positions of a plurality of liquid crystal barrier areas which are arranged in parallel at intervals according to the distance between human eyes, the projection coordinates of the human eyes on the liquid crystal barrier panel, the distance between the human eyes and the liquid crystal barrier panel and the distance between the liquid crystal barrier panel and the display panel, which are acquired by a front camera, and sends a second position determination instruction to the barrier driving unit, wherein the second position determination instruction is configured to indicate the position of each liquid crystal barrier area;
the control unit sends a first position determination instruction to the display driving unit, wherein the first position determination instruction is used for indicating the position of each display area; the display driving unit determines the positions of the plurality of display areas which are arranged in parallel and at intervals on the display panel according to the first position determination instruction; splitting the display image frame to obtain the display content corresponding to each display area; driving each display area to display the corresponding display content according to the position;
the barrier driving unit determines the positions of the liquid crystal barrier areas which are arranged in parallel and at intervals on the liquid crystal barrier panel according to the second position determination instruction, and drives the liquid crystal barrier panel to form liquid crystal barriers on the liquid crystal barrier areas which are arranged in parallel and at intervals according to the positions;
the display content displayed by each display area penetrates through a light transmission area between two adjacent liquid crystal barrier areas on the liquid crystal barrier panel and is emitted to a preset visual range, and the preset visual range is a range determined according to the distance between two eyes of human eyes.
4. The display method according to claim 3,
when the working state is switched from the narrow visual angle working state to the wide visual angle working state, the control unit sends a state switching instruction to the display driving unit and the barrier driving unit;
the display driving unit drives the display panel to display the display image frame on the whole display area after receiving the state switching instruction;
and the barrier driving unit drives the liquid crystal barrier panel to cancel the formation of the liquid crystal barrier after receiving the state switching indication.
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