CN117706776A - Display device and augmented reality device - Google Patents

Abstract

The present disclosure relates to a display device and an augmented reality apparatus, the device comprising: the display device comprises a first display panel, a second display panel and a first flexible circuit board; the first display panel comprises a first substrate, and the first substrate comprises a first binding area; the first substrate is provided with a first signal wire, and the first connecting end of the first flexible circuit board is fixed in the first binding area and is electrically connected with at least part of the first signal wire; the second display panel comprises a second substrate, and the second substrate comprises a second binding area; the second substrate is provided with a second signal wire, and the second connecting end of the first flexible circuit board is fixed in the second binding area and is electrically connected with at least part of the second signal wire. Because the first display panel and the second display panel are mutually independent, the relative positions of the first display panel and the second display panel can be adjusted, and the size of a display screen does not need to be enlarged. The edge line for avoiding the nose wing can be directly formed during cutting, and the process of manufacturing the notch is not required to be additionally increased.

Description

Display device and augmented reality device

Technical Field

The disclosure relates to the technical field of display, in particular to a display device and an augmented reality device.

Background

Extended Reality (XR for short) refers to that a virtual environment capable of man-machine interaction is created by combining Reality with virtual through a computer, which is also collectively called as multiple technologies such as AR, VR, MR and the like. By integrating the visual interaction technologies of the three, the method brings the 'immersion' of seamless transition between the virtual world and the real world for the experienter.

The existing head-mounted augmented reality device only comprises one display screen, wherein a black matrix is arranged in the middle of the display screen, so that the display screen is divided into two display areas, namely a left eye display area and a right eye display area. Such head-mounted virtual reality devices suffer from the following drawbacks: 1. because the left eye distance and the right eye distance of different wearers are different, if the binocular distance (interpupillary distance, IPD) adjustment is required, the transverse distance of the display area is required to be set to be adjustable to match different eye distances, and further the display screen size is enlarged, so that the power consumption of the display device is increased, the size of the display device is increased, and the cost of the display device is increased; secondly, if a low exit pupil (ER) is to be made, a notch (notch) for avoiding the nose wing needs to be formed between the two display areas, and the process cost for manufacturing the notch needs to be increased.

Disclosure of Invention

In order to solve the above technical problems or at least partially solve the above technical problems, the present disclosure provides a display device and an augmented reality apparatus.

In a first aspect, the present disclosure provides a display device, comprising: the display device comprises a first display panel, a second display panel and a first flexible circuit board;

the first display panel includes a first substrate including a first bonding region; the first substrate is provided with a first signal wire, and the first connecting end of the first flexible circuit board is fixed in the first binding area and is electrically connected with at least part of the first signal wire;

the second display panel includes a second substrate including a second bonding region; the second substrate is provided with a second signal wire, and the second connecting end of the first flexible circuit board is fixed in the second binding area and is electrically connected with at least part of the second signal wire.

In a second aspect, the present disclosure also provides an augmented reality device comprising a display apparatus as described above.

Compared with the prior art, the technical scheme provided by the embodiment of the disclosure has the following advantages:

according to the technical scheme provided by the embodiment of the disclosure, the first connecting end of the first flexible circuit board is fixed in the first binding area and is electrically connected with at least part of the first signal wires; the second connecting end of the first flexible circuit board is fixed in the second binding area and is electrically connected with at least part of the second signal wires, the display panels (namely the first display panel and the second display panel) corresponding to the second connecting end are respectively formed aiming at eyes, the first display panel and the second display panel are mutually independent, the signal wires in the display panels are electrically connected through the first flexible circuit board, and the first flexible circuit board has the characteristics of being capable of freely bending, winding and folding, and can realize the adjustment of the distance between the eyes by adjusting the relative positions of the first display panel and the second display panel without increasing the size of a display screen, so that the display device can reduce the power consumption of the display device, the size of the display device and the cost of the display device. In addition, because the first display panel and the second display panel are mutually independent, when the large-scale display panel is cut into independent display panels, the side line for avoiding the nose wing can be directly formed, the process of additionally increasing the manufacturing notch is not needed, on one hand, the manufacturing cost of the display device can be reduced, and on the other hand, the manufacturing process of the display device can be simplified.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the disclosure and together with the description, serve to explain the principles of the disclosure.

In order to more clearly illustrate the embodiments of the present disclosure or the solutions in the prior art, the drawings that are required for the description of the embodiments or the prior art will be briefly described below, and it will be obvious to those skilled in the art that other drawings can be obtained from these drawings without inventive effort.

Fig. 1 is a schematic structural diagram of a display device according to an embodiment of the disclosure;

FIG. 2 is a schematic structural diagram of the first display panel and the second display panel in FIG. 1;

fig. 3 is a schematic structural diagram of another display device according to an embodiment of the disclosure;

FIG. 4 is a cross-sectional view of the cut of FIG. 3 taken along line A1-A2;

fig. 5 and 6 are schematic cross-sectional structures of another two display devices according to embodiments of the disclosure;

fig. 7 is a schematic cross-sectional view of another display device according to an embodiment of the disclosure;

fig. 8 is a schematic structural diagram of another display device according to an embodiment of the disclosure;

fig. 9 is a schematic structural diagram of another display device according to an embodiment of the disclosure;

fig. 10 is a schematic structural diagram of an augmented reality device according to an embodiment of the present disclosure.

Detailed Description

In order that the above objects, features and advantages of the present disclosure may be more clearly understood, a further description of aspects of the present disclosure will be provided below. It should be noted that, without conflict, the embodiments of the present disclosure and features in the embodiments may be combined with each other.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present disclosure, but the present disclosure may be practiced otherwise than as described herein; it will be apparent that the embodiments in the specification are only some, but not all, embodiments of the disclosure.

Fig. 1 is a schematic structural diagram of a display device according to an embodiment of the disclosure, and fig. 2 is a schematic structural diagram of a first display panel and a second display panel in fig. 1. As shown in fig. 1 to 2, the display device includes: a first display panel, a second display panel, and a first flexible circuit board 30; the first display panel includes a first substrate 10, the first substrate 10 including a first bonding region 121; the first substrate 10 is provided with a first signal line (not shown in fig. 1-2), and a first connection end of the first flexible circuit board 30 is fixed to the first bonding region 121 and is electrically connected to at least a portion of the first signal line; the second display panel includes a second substrate 20, the second substrate 20 including a second bonding region 221; the second substrate 20 is provided with a second signal line (not shown in fig. 1-2), and the second connection end of the first flexible circuit board 30 is fixed to the second bonding region 221 and is electrically connected to at least a portion of the second signal line.

In practice, optionally, the first display panel is used to form a left eye display screen of the head mounted display device and the second display panel is used to form a right eye display screen of the head mounted display device. Alternatively, the first display panel is used to form a right eye display screen of the head mounted display device, and the second display panel is used to form a left eye display screen of the head mounted display device.

In the present disclosure, the first display panel and the second display panel may specifically be a liquid crystal display panel (Liquid Crystal Display, LCD), an Organic Light-Emitting Diode (OLED), a Micro LED display panel, a liquid crystal on silicon (Liquid Crystal on Silicon, LCOS) display panel, and the like. For example, if the first display panel and the second display panel are liquid crystal display panels, the first substrate and the second substrate refer to substrates for manufacturing the array substrate. If the first display panel and the second display panel are organic light emitting display panels, the first substrate and the second substrate refer to substrates for fabricating an anode, an organic light emitting layer, and a cathode.

The first signal line is used for transmitting signals which can control the pixel units in the first display panel to display (or the light emitting units to emit light). Similarly, the second signal line is used for transmitting a signal that can control the pixel unit in the second display panel to display (or the light emitting unit to emit light). The present disclosure does not limit the signal lines to which the first signal line and the second signal line refer specifically. Illustratively, the first signal lines include, but are not limited to, one or more of scan lines, data lines, high and low level voltage lines, and timing control lines. The second signal lines include, but are not limited to, one or more of scan lines, data lines, high and low level voltage lines, and timing control lines corresponding to the first signal lines.

According to the technical scheme, the first connecting end of the first flexible circuit board is fixed in the first binding area and is electrically connected with at least part of the first signal wires; the second connecting end of the first flexible circuit board is fixed in the second binding area and is electrically connected with at least part of the second signal wires, the display panels (namely the first display panel and the second display panel) corresponding to the second binding area are respectively formed aiming at two eyes, the first display panel and the second display panel are mutually independent, the signal wires in the display panels are electrically connected through the first flexible circuit board, transmission of display signals is realized, and image display can be carried out on the two display panels.

Fig. 3 is a schematic structural diagram of another display device according to an embodiment of the disclosure. In this application, fig. 1 corresponds to a case where the distance between the first display panel and the second display panel is large. Fig. 3 corresponds to a case where the distance between the first display panel and the second display panel is small. Because the first display panel and the second display panel are mutually independent, the first flexible circuit board has the characteristics of being capable of being freely bent, rolled and folded, the relative positions of the first display panel and the second display panel can be adjusted, the binocular distance adjustment is realized, and the display screen size does not need to be increased, so that the power consumption of the display device can be reduced, the size of the display device is reduced, and the cost of the display device is reduced. In addition, since the first display panel and the second display panel are independent of each other, when the large display panel is cut into individual display panels, the edge line (such as edge line m and edge line n in fig. 1) for avoiding the nose wing can be directly formed. The manufacturing process of the display device can be simplified without additionally increasing the manufacturing process of the notch, so that the manufacturing cost of the display device can be reduced.

Fig. 4 is a cross-sectional view of the cut of fig. 3 taken along line A1-A2. Optionally, referring to fig. 4, the first flexible circuit board includes a bending region B; the bending area B is positioned between the first connecting end 31 and the second connecting end 32; the distance between the first display panel and the second display panel is adjustable; the bending state of the bending region of the first flexible circuit board changes along with the change of the distance between the first display panel and the second display panel. In other words, when the distance between the first display panel and the second display panel is adjusted, only the bending region B of the first flexible circuit board 30 may be bent, and the rest may not be bent, so that the bending state may not be exhibited. The setting is convenient for follow-up carry out special setting to bending zone B like this, makes it can satisfy and bear many times dynamic bending and not damage its inside wire's demand, consolidates other parts except bending zone B simultaneously, prevents at the in-process of buckling that first link 31 and second link 32 warp, causes short circuit or open circuit's bad situation to appear.

A change in bending state, including a change in bending shape; alternatively, the curved shape is the same, but the degree of curvature varies.

In practice, the bending area of the first flexible circuit board may take on various bending shapes, which is not limited in this application. Illustratively, with continued reference to fig. 4, the curved shape of the bending region B of the first flexible circuit board 30 is zigzag. Fig. 5 and fig. 6 are schematic cross-sectional structures of another two display devices according to the embodiments of the present disclosure, where fig. 5 corresponds to a case where a distance between the first display panel and the second display panel is larger. Fig. 6 corresponds to a case where the distance between the first display panel and the second display panel is small. Referring to fig. 5 and 6, the bent shape of the bent region B of the first flexible circuit board 30 is arched. As the distance between the first display panel and the second display panel is gradually reduced, the curvature radius of the arch shape presented by the bending region of the first flexible circuit board is gradually reduced.

With continued reference to fig. 4, optionally, the first connection end 31 of the first flexible circuit board 30 is provided with a first stiffening layer 41 on a side facing away from the first substrate 10; the second connection end 32 of the first flexible circuit board 30 is provided with a second stiffening layer 42 at a side facing away from the second substrate 20. The bending resistance degree of the first connection end 31 can be increased through the first reinforcing layer 41, and the occurrence probability of the bad condition of short circuit or open circuit caused by the tilting of the first connection end 31 is reduced; the second reinforcing layer 42 can increase the bending resistance of the second connection end 32, and reduce the occurrence probability of a short circuit or an open circuit caused by the tilting of the second connection end 32.

Since the first connection end 31 and the second connection end 32 form a gold finger for electrical connection, the gold finger is made of metal and is easily corroded by water and oxygen. With respect thereto, with continued reference to fig. 4, optionally the first stiffening layer 41 covers the end of the first connection end 31 and is in contact with the first substrate 10; and/or the second stiffening layer 42 covers the end of the second connection end 32 and is in contact with the second substrate 20. This arrangement seals the ends of the first and second connection ends 31, 32 to reduce the chance of the first and second connection ends 31, 32 being attacked by water and oxygen. Optionally, the first stiffening layer 41 and the second stiffening layer 42 are made of a material resistant to water and oxygen.

With continued reference to fig. 4, optionally, a third reinforcing structure 43 is disposed on a side of the first connection end 31 of the first flexible circuit board 30, which is close to the first substrate 10, and the third reinforcing structure 43 is located in a step area formed between the first flexible circuit board 30 and the first substrate 10, and is fixed to a surface of the first connection end 31 of the first flexible circuit board 30, which is close to the first substrate 10, and a side wall of the first substrate 10; and/or, a fourth reinforcing structure 44 is disposed on a side of the second connection end 32 of the first flexible circuit board 30, which is close to the second substrate 20, and the fourth reinforcing structure 44 is located in a step area formed between the first flexible circuit board 30 and the second substrate 20, and is fixed to a surface of the second connection end 32 of the first flexible circuit board 30, which is close to the second substrate 20, and a side wall of the second substrate 20. The third reinforcing structure 43 is used for improving the bending resistance of the first connecting end 31 and reducing the probability of occurrence of a fault condition of short circuit or open circuit caused by the warping of the first connecting end 31. The fourth reinforcing structure 44 is used for improving the bending resistance of the second connecting end 32 and reducing the probability of occurrence of a fault condition of short circuit or open circuit caused by the tilting of the second connecting end 32.

With continued reference to fig. 1, optionally, the first substrate 10 includes a display region 11 and a non-display region 12 surrounding the display region 11; the first binding area 121 is located in the non-display area 12; the non-display area 12 further includes a third bonding area 122, and the third bonding area 122 is bonded with the driving chip 50, and at least a portion of the first signal lines are electrically connected to the driving chip 50. The driving chip 50 is used to form driving signals for driving the pixel units (or light emitting units) in the first and second display panels to display images. Alternatively, the driving chip 50 is a data driving circuit that supplies a data signal.

Alternatively, the second substrate 20 includes a display region 21 and a non-display region 22 surrounding the display region 21; the second bonding area 221 is located in the non-display area 22.

Further, with continued reference to fig. 1, the display device optionally further includes a second flexible wiring board 60 and a printed wiring board (not shown in fig. 1); the driving chip 50 is electrically connected to the printed wiring board through a second flexible wiring board 60. The second flexible circuit board 60 is in a bent state, so that the printed circuit board is located on the non-light-emitting side of the first display panel. The printed circuit board is a main board comprising the display device.

Fig. 7 is a schematic cross-sectional view of another display device according to an embodiment of the disclosure. Referring to fig. 7, alternatively, the display device is a liquid crystal display device, and the first substrate 10 and the second substrate 20 are both substrates for forming an array substrate. The first display panel further comprises a color film substrate 15 opposite to the first substrate 10. The display device further comprises a backlight module 17 and a lens group 16. The backlight module 17 is located at a side of the first substrate 10 away from the color film substrate 15. The lens group 16 is located on a side of the color film substrate 15 away from the first substrate 10. The second display panel further comprises a color film substrate 25 opposite the second substrate 20. The display device further includes a backlight module 27 and a lens assembly 26. The backlight module 27 is located at a side of the second substrate 20 away from the color film substrate 25. The lens group 26 is located on a side of the color film substrate 25 away from the second substrate 20. The printed circuit board 70 is located at a side of the backlight module 17 away from the display panel. The human eye 80 views the display device through the lens assembly 26 and the lens assembly 16. The lens group 26 and the lens group 16 are used to enlarge images displayed in their respective display panels. Optionally, lens group 26 and lens group 16 include one or more of an aspherical lens, an aspherical-fresnel lens, a spherical lens, and a mirror. The frame comprising the display device can be reduced by the arrangement, and the development trend of the frame is consistent with that of a narrow frame.

In practice, in order to reduce the wiring difficulty of the first signal line, optionally, in the first substrate, the first bonding region and the third bonding region reside on opposite sides of the display region. In one embodiment, as shown in fig. 1, the first binding area 121 and the third binding area 122 are separated on the left and right sides of the display area 11. Fig. 8 is a schematic structural diagram of another display device according to an embodiment of the disclosure. In another embodiment, as shown in fig. 8, the first binding area 121 and the third binding area 122 are located on both sides of the display area 11.

If the first binding area and the third binding area are located on the upper and lower sides of the display area, optionally, as shown in fig. 8, the first binding area 121 is located on the lower side of the display area 11, and the third binding area 122 is located on the upper side of the display area 11. The reason for this arrangement is that the second flexible circuit board 60 is convenient to be arranged at a place far away from the nose wings subsequently, the difficulty in arrangement of the second flexible circuit board 60 is reduced, and meanwhile, the wearing comfort of the head-mounted display device comprising the display device is improved.

Fig. 9 is a schematic structural diagram of another display device according to an embodiment of the disclosure. Optionally, the display device further includes a driving chip 50; the driving chip 50 is fixed on the first flexible circuit board 30 and electrically connected with the connection traces in the first flexible circuit board 30. The driving Chip 50 is fixed On the first flexible circuit board 30 by COF (Chip On Flex, or Chip On Film), which is often called flip Chip Film technology. The arrangement can further reduce the area of the non-display area in the first substrate 10, which is beneficial to reducing the frame of the display device, and is consistent with the development trend of a narrow frame.

Further, the display device further includes a printed wiring board 70; the first flexible circuit board 30 further includes a third connection end; the printed circuit board 70 is electrically connected to the third connection terminal, and the printed circuit board 70 is electrically connected to the driving chip 50 through the connection trace in the first flexible circuit board 30.

Similarly, in one embodiment, the portion of the first flexible wiring board 30 adjacent to the printed wiring board 70 may be bent such that the printed wiring board 70 is located on the non-light emitting side of the first display panel on the basis of fig. 9.

On the basis of the above technical solutions, optionally, if the display device further includes a backlight module and a third flexible circuit board, the backlight module is electrically connected with the printed circuit board through the third flexible circuit board. The printed circuit board is a main board of the display device.

On the basis of the above technical solutions, optionally, the shapes of the first display panel and the second display panel are convex polygons. The convex polygon is a polygon in which, if any one of all sides of a polygon is extended to a straight line in an infinite manner, the other sides are located on the same side of the straight line. The purpose of the arrangement is to ensure that the display panel with the required shape can be formed through a simple cutting process, and a notch manufacturing technology is not required, so that the purposes of reducing the manufacturing difficulty and the process cost of the display device are achieved.

The embodiment of the disclosure also provides an augmented reality device. Fig. 10 is a schematic structural diagram of an augmented reality device according to an embodiment of the present disclosure. Referring to fig. 10, the augmented reality device includes any one of the display devices provided in the embodiments of the present disclosure.

The augmented reality device is a terminal that combines reality and virtual, and can be provided in the form of glasses, head mounted displays (Head Mount Display, HMD), or contact lenses for realizing visual perception and other forms of perception, but the form of realization of the virtual reality device is not limited thereto, and can be further miniaturized or enlarged as needed. Augmented reality devices include, but are not limited to, virtual reality devices and augmented reality devices.

Since the augmented reality device provided by the embodiment of the present disclosure includes any one of the display devices provided by the embodiment of the present disclosure, the display device has the same or corresponding beneficial effects as the display device included therein.

It should be noted that in this document, relational terms such as "first" and "second" and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

The foregoing is merely a specific embodiment of the disclosure to enable one skilled in the art to understand or practice the disclosure. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the disclosure. Thus, the present disclosure is not intended to be limited to the embodiments shown and described herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (13)

1. A display device, comprising: the display device comprises a first display panel, a second display panel and a first flexible circuit board;

the first display panel includes a first substrate including a first bonding region; the first substrate is provided with a first signal wire, and the first connecting end of the first flexible circuit board is fixed in the first binding area and is electrically connected with at least part of the first signal wire;

the second display panel includes a second substrate including a second bonding region; the second substrate is provided with a second signal wire, and the second connecting end of the first flexible circuit board is fixed in the second binding area and is electrically connected with at least part of the second signal wire.

2. The display device of claim 1, wherein the first flexible circuit board comprises a bending region; the bending area is positioned between the first connecting end and the second connecting end;

the distance between the first display panel and the second display panel is adjustable; the bending state of the bending region of the first flexible circuit board changes along with the change of the distance between the first display panel and the second display panel.

3. The display device of claim 1, wherein the display device comprises a display device,

a first reinforcing layer is arranged on one side, away from the first substrate, of the first connecting end of the first flexible circuit board;

and a second reinforcing layer is arranged on one side of the second connecting end of the first flexible circuit board, which is away from the second substrate.

4. A display device according to claim 3, wherein,

the first reinforcement layer covers the end part of the first connection end and is in contact with the first substrate; and/or the number of the groups of groups,

the second reinforcing layer covers an end of the second connection terminal and is in contact with the second substrate.

5. The display device of claim 1, wherein the display device comprises a display device,

a third reinforcing structure is arranged on one side, close to the first substrate, of the first connecting end of the first flexible circuit board, and is positioned in a step area formed by the first flexible circuit board and the first substrate and fixed with the surface, close to the first substrate, of the first connecting end of the first flexible circuit board and the side wall of the first substrate; and/or the number of the groups of groups,

a fourth reinforcing structure is arranged on one side, close to the second substrate, of the second connecting end of the first flexible circuit board, is located in a step area formed by the first flexible circuit board and the second substrate, and is fixed with the surface, close to the second substrate, of the second connecting end of the first flexible circuit board and the side wall of the second substrate.

6. The display device of claim 1, wherein the display device comprises a display device,

the first substrate includes a display region and a non-display region surrounding the display region; the first binding area is positioned in the non-display area;

the non-display area further comprises a third binding area, a driving chip is bound in the third binding area, and at least part of the first signal lines are electrically connected with the driving chip.

7. The display device of claim 6, wherein the display device comprises a display device,

at least part of the first signal lines are electrically connected with the driving chip through anisotropic conductive adhesive.

8. The display device according to claim 6, further comprising a second flexible wiring board and a printed wiring board;

the driving chip is also electrically connected with the printed circuit board through the second flexible circuit board;

the second flexible circuit board is in a bending state, and the printed circuit board is fixed on the non-light-emitting side of the first display panel.

9. The display device of claim 6, wherein in the first substrate, the first binding region and the third binding region reside on opposite sides of the display region.

10. The display device of claim 1, further comprising a driver chip;

the driving chip is fixed on the first flexible circuit board and is electrically connected with the connecting wiring in the first flexible circuit board.

11. The display device of claim 10, further comprising a printed wiring board; the first flexible circuit board further comprises a third connecting end;

the printed circuit board is electrically connected with the third connecting end, and the printed circuit board is electrically connected with the driving chip through a connecting wiring in the first flexible circuit board.

12. The display device of claim 1, wherein the first display panel and the second display panel are each convex polygonal in shape.

13. An augmented reality device comprising the display device of any one of claims 1-12.