Display screen for virtual reality device
Technical Field
The present invention relates to a display screen, and more particularly, to a display screen for a virtual reality device to have a narrow frame structure.
Background
In the existing virtual reality device, the display screen is configured to use two display screens to respectively correspond to the images seen by the left and right eyes, or a single display screen is used to divide the display screen into two areas, namely a left area and a right area, to correspond to the images seen by the left and right eyes. If dual display screens are used, a control chip for controlling the display screens and a flexible circuit board connected to the control chip are required to be separately disposed, and are usually disposed above, below, or on the left and right sides of the display screens. In order to arrange the control chip and the flexible circuit board, the shell needs to be enlarged outside the display screen, and a specific accommodating space is reserved for accommodating the electronic elements.
If a single display screen is used, only one set of control chip and flexible circuit board is needed to transmit signals, however, although only one set is used, the left and right sides, upper and lower sides of the housing still need to be enlarged to reserve specific accommodating spaces, especially in the state of being arranged on the left and right sides, in order to balance the left and right sides of the virtual reality device, the required accommodating spaces need to be reserved on the left and right sides even if only one side is provided with the control chip and the flexible circuit board.
Disclosure of Invention
However, the above configuration requires increasing the volume of the housing of the virtual reality device to reserve the space for accommodating the control chip and the flexible circuit board. And therefore, the whole volume of the virtual reality device becomes large, and the user feels too large or heavy when wearing the virtual reality device. In addition, if the configuration of dual display screens is used, a control chip is required to be configured to control each display screen, which also increases the number of components.
To reduce the size of the frame around the display screen as much as possible, to miniaturize the whole virtual reality device as much as possible, and to reduce the number of required components. The invention provides a display screen for a virtual reality device in an embodiment. The central position of the long side direction of the glass display panel is an installation area with a preset width, and the installation area divides the glass display panel into a first display area and a second display area. The control chip is arranged in the mounting area of the glass display panel and is respectively wired to the first display area and the second display area of the glass display panel so as to control the first display area and the second display area to respectively display images. And the flexible circuit board is electrically connected to the control chip from one side of the long side direction of the glass display panel.
When the virtual reality device is worn and used, an invalid space is formed in the visual range of the left eye and the right eye, and the invalid space is positioned in the middle between the two pupils. Therefore, in an embodiment of the present invention, by disposing the control chip and the flexible circuit board for signal transmission in the mounting area at the middle of the glass display panel, there is no need to additionally reserve an accommodating space for accommodating the control chip and the flexible circuit board around the glass display panel, and there is no need to enlarge a housing of the virtual reality device, so that the overall design is reduced, and the border around the glass display panel is narrowed.
In addition, the glass display panel is a single-chip display panel, so that only one control chip is needed for control. By arranging the control chip at the middle position of the long side direction of the whole glass display panel, the control chip can be respectively wired to the first display area and the second display area which are positioned at the left and the right in a short distance so as to control the first display area and the second display area to display images. Also, since the wiring lengths of the two are almost the same, the problem of delay in signal transmission is less likely to occur.
In some embodiments, the display screen for the virtual reality device further includes another flexible circuit board electrically connected to the control chip from another side of the glass display panel in the long side direction. And the flexible circuit board and the other flexible circuit board respectively transmit images to be displayed in the first display area and the second display area. By using two flexible circuit boards to transmit the image signals to be displayed in the first display area and the second display area, the number of pins required by a single flexible circuit board can be reduced, and the flexible circuit board with a narrower width can be used. In this way, the width of the mounting area is not too large, and the size of the first display area and the second display area is not affected.
In some embodiments, the glass display panel includes a glass substrate and a backlight module. The glass substrate is arranged above the backlight module, and the control chip is arranged above the glass substrate. The backlight module comprises a light source component, the light source component is arranged in the installation area, and the light source component emits light sources towards the first display area and the second display area. By arranging the light source component of the backlight module in the installation area, the situation that an accommodating space needs to be added around the glass display panel is avoided, so that the frame is narrowed. And the light source component emits light sources from the installation area to the first display area and the second display area which are positioned at the left side and the right side, so that the light traveling path can not be overlong, and the problem that the light intensity at the edge is possibly insufficient is avoided.
In some embodiments, when the resolutions of the first display area and the second display area of the glass display panel in the long side direction are R, the fan-out (fan-out) number of the single side of the control chip is F, and the width of the control chip is W, the predetermined width satisfies the following formula:
the predetermined width is (R × 3 ÷ 6 ÷ F × 6) × 2+ W.
Therefore, after the required preset width can be calculated in advance according to different resolutions, the size of the installation area and the related wiring (Layout) mode can be planned in advance, and the installation area can be miniaturized as much as possible to avoid influencing the image display of the display area.
The detailed features and advantages of the present invention are described in detail in the following embodiments, which are sufficient for anyone skilled in the art to understand the technical contents of the present invention and to implement the present invention, and the objects and advantages related to the present invention can be easily understood by anyone skilled in the art according to the disclosure of the present specification, the claims and the accompanying drawings.
The invention is described in detail below with reference to the drawings and specific examples, but the invention is not limited thereto.
Drawings
FIG. 1 is a schematic top view of a display screen for a virtual reality device according to an embodiment of the present invention;
FIG. 2 is a schematic top view of a backlight module for a display screen of a virtual reality device according to an embodiment of the present invention;
FIG. 3 is a schematic side view of a display screen for a virtual reality device according to an embodiment of the invention.
Wherein, the reference numbers:
10 glass display panel
11 long side
12 short side
13 mounting area
14 first display area
15 second display area
16 glass substrate
17 backlight module
171 light source assembly
1711 Circuit board
1712 light-emitting diode
20 control chip
30 flexible circuit board
L predetermined width
Width W
Detailed Description
The invention will be described in detail with reference to the following drawings, which are provided for illustration purposes and the like:
referring to fig. 1 to 3, fig. 1 is a schematic top view of a display screen for a virtual reality device according to an embodiment of the present invention, fig. 2 is a schematic top view of a backlight module for a display screen for a virtual reality device according to an embodiment of the present invention, and fig. 3 is a schematic side view of a display screen for a virtual reality device according to an embodiment of the present invention. For convenience of illustration, fig. 2 only illustrates the backlight module located at the lowermost layer, and omits the glass substrate, the control chip and the flexible circuit board above the backlight module. Fig. 3 is a diagram for simply illustrating the relative position relationship among the glass display panel 10, the control chip 20 and the backlight module 17, and other elements not shown are omitted.
As shown in fig. 1, the display screen for a virtual reality device of the present embodiment includes a glass display panel 10, a control chip 20, and two flexible circuit boards 30. The glass display panel 10 is a complete long rectangular display panel. Since only a single sheet type display panel is used, only one control chip 20 is required to control the glass display panel 10 to display a desired image, and two control chips are not required, thereby reducing the number of required components.
The glass display panel 10 has a long side 11 and a short side 12 opposite to each other. The central position of the glass display panel 10 in the direction of the long side 11 is a mounting area 13 with a predetermined width L, and the mounting area 13 divides the glass display panel 10 into a first display area 14 and a second display area 15. The first display area 14 and the second display area 15 correspond to a left eye area and a right eye area of a user when the user wears the display device. Here, the mounting region 13 equally divides the glass display panel 10 into two display regions, i.e., left and right display regions, and the mounting region 13 located at the center corresponds to the position of the nose of the user, which is usually an invalid region, i.e., it is not used to display an image in actual use. Therefore, this invalid region is used as the mounting region 13 in the present embodiment.
The control chip 20 is disposed in the mounting region 13 of the glass display panel 10 and is respectively wired to the first display region 14 and the second display region 15 of the glass display panel 10 to control the first display region 14 and the second display region 15 to respectively display images. In the present embodiment, the control chip 20 is disposed at the middle position of the whole glass display panel 10 in the direction of the long side 11, and for the images to be transmitted to the first display area 14 and the second display area 15 to display the images corresponding to the left eye and the right eye, the images are transmitted by wiring from the control chip 20 to the left and right respectively through independent lines. Therefore, the control chip 20 can be wired to the left and right first display regions 14 and second display regions 15 in a short distance, and the first display region 14 and second display region 15 can be controlled to display images. Also, since the distance between the control chip 20 and the first display area 14 and the distance between the control chip and the second display area 15 are almost the same, there is less delay problem in signal transmission.
The two flexible circuit boards 30 are electrically connected to the control chip 20 from two sides of the glass display panel 10 in the direction of the long side 11. In the present embodiment, two flexible circuit boards 30 are illustrated as an example, but in other embodiments, only one flexible circuit board 30 may be provided and electrically connected to the control chip 20 from any side of the glass display panel 10 in the direction of the long side 11.
The two flexible circuit boards 30 can be configured to transmit images to be displayed in the first display area 14 and the second display area 15, respectively. And by using two flexible circuit boards 30 to transmit the image signals to be displayed on the first display area 14 and the second display area 15, respectively, the number of pins required for a single flexible circuit board 30 can be reduced, and a flexible circuit board 30 having a narrower width can be used. In this way, the width of the mounting region 13 may not be too large and may not affect the sizes of the first display region 14 and the second display region 15.
By disposing the control chip 20 and the flexible circuit board 30 for signal transmission in the mounting region 13 in the middle of the glass display panel 10, the accommodating space for accommodating the control chip 20 and the flexible circuit board 30 does not need to be additionally reserved around the glass display panel 10, and the housing of the virtual reality device does not need to be enlarged, so that the overall design can be reduced, and the frame around the glass display panel 10 can be narrowed.
Referring to fig. 1 to fig. 3, the glass display panel 10 of the present embodiment includes a glass substrate 16 and a backlight module 17, and as can be seen from fig. 3, the glass substrate 16 is disposed above the backlight module 17. As can be seen from fig. 2, the backlight module 17 includes a light source assembly 171, the light source assembly 171 is disposed in the mounting region 13, and the light source assembly 171 emits light toward the first display region 14 and the second display region 15. The light source module 171 includes a circuit board 1711 and a plurality of light emitting diodes 1712 disposed on the circuit board 1711. The light emitting diodes 1712 emit light sources to the first display region 14 or the second display region 15, respectively. In the present embodiment, the light emitting diodes 1712 arranged at intervals emit light sources in the same direction, but the invention is not limited thereto. As long as the light of the first display region 14 and the second display region 15 can be provided.
By disposing the light source module 171 of the backlight module 17 in the mounting region 13, it is also avoided that an accommodating space needs to be added around the glass display panel 10, so as to narrow the frame around the glass display panel 10. Furthermore, the light source assembly 171 emits light from the mounting region 13 to the first display region 14 and the second display region 15 located at the left and right sides, so that the light traveling path is not too long, and the problem that the intensity of light may be insufficient when the light is projected to the other side can be avoided, compared with the case that the light source assembly 171 is disposed at any side of the short side 12.
In addition, in the present embodiment, the required predetermined width L can be calculated for the glass display panels 10 with different resolutions in advance, so as to plan the size of the mounting area 13 and the related wiring manner in advance, and the mounting area 13 can be miniaturized as much as possible to avoid affecting the image display of the display area. Therefore, when the resolutions of the first display area 14 and the second display area 15 of the glass display panel 10 in the long side 11 direction are R, the fan-out number of one side of the control chip 20 is F, and the width of the control chip 20 is W, the predetermined width L satisfies the following formula:
the predetermined width L is (R × 3 ÷ 6 ÷ F × 6) × 2+ W.
For example, if the resolutions of the first display area 14 and the second display area 15 in the long side 11 direction are 720, the fan-out number F of one side of the control chip 20 is 2, and the width of the control chip is 2mm, the predetermined width L is 4.1 mm. Therefore, it can be known that the width of the minimum mounting region 13 to have a resolution of 720 and sufficient for disposing the required electronic components is about 4.1 mm. Further, the position of the glass display panel 10 in the entire virtual reality device may be adjusted based on the above.
Although the present invention has been described with reference to the foregoing embodiments, it should be understood that various changes and modifications can be made therein by those skilled in the art without departing from the spirit and scope of the invention.
The present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof, and it should be understood that various changes and modifications can be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.