CN109727540B - Foldable display device - Google Patents
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- CN109727540B CN109727540B CN201910152723.6A CN201910152723A CN109727540B CN 109727540 B CN109727540 B CN 109727540B CN 201910152723 A CN201910152723 A CN 201910152723A CN 109727540 B CN109727540 B CN 109727540B
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Abstract
The embodiment of the invention provides a foldable display device, relates to the technical field of display, and is used for improving the lighting effect of an optical element in the foldable display device. The foldable display device comprises a display panel, wherein the display panel comprises a first area, a second area and a bending area which are arranged along a first direction; the bending area is connected with the first area and the second area; the first region comprises a first sub-region and the second region comprises a second sub-region; an optical element is arranged in the second sub-area; the optical element is positioned on the light-emitting side of the display panel; in a first state, the bending region is bent, the first sub-region and the second sub-region are overlapped, and the first sub-region is in a light-transmitting state.
Description
[ technical field ] A method for producing a semiconductor device
The invention relates to the technical field of display, in particular to a foldable display device.
[ background of the invention ]
With the continuous development of display technology, various display products with different characteristics are produced to meet different use requirements. The foldable display device is a novel display product with flexibility, and when the foldable display device is used, a user can fold the foldable display device according to needs so as to reduce the size of the display device and improve the portability of the display device. Alternatively, the foldable display device may be unfolded to obtain a large display screen. Currently, performance improvement of foldable display devices has become a focus of research.
[ summary of the invention ]
In view of this, embodiments of the present invention provide a foldable display device to improve the light-collecting effect of an optical element in the foldable display device.
The embodiment of the invention provides a foldable display device, which comprises a display panel, a first display panel and a second display panel, wherein the display panel comprises a first area, a second area and a bending area which are arranged along a first direction, and the bending area is connected with the first area and the second area; the first region comprises a first sub-region, the second region comprises a second sub-region, an optical element is arranged in the second sub-region, and the optical element is positioned on the light emitting side of the display panel; in a first state, the bending region is bent, the first sub-region and the second sub-region are overlapped, and the first sub-region is in a light-transmitting state.
In the foldable display device provided by the embodiment of the invention, in the first state, that is, when the first sub-area and the second sub-area included in the display panel are set to be overlapped, the first sub-area is set to be in the light-transmitting state, so that when the optical element located in the second sub-area works, the first sub-area in the light-transmitting state does not affect the lighting performance of the optical element, and the optical element can be ensured to still work normally when the foldable display device is in the first state.
In addition, the optical element is arranged in the second sub-area in the second area, so that the optical element is prevented from being arranged in the frame area of the foldable display device, and the screen occupation ratio of the foldable display device can be improved.
[ description of the drawings ]
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic cross-sectional view of a display panel according to an embodiment of the invention;
fig. 2 is a schematic diagram of a foldable display device provided in an embodiment of the present invention in a first state;
fig. 3 is a schematic diagram of a foldable display device in a second state according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of another foldable display device provided in an embodiment of the present invention in a second state;
FIG. 5 is a schematic cross-sectional view along AA' of FIG. 4;
FIG. 6 is an operational view of the foldable display device of FIG. 4 in a first state;
FIG. 7 is a schematic cross-sectional view along BB' of FIG. 4;
FIG. 8 is a schematic view of a foldable display device according to an embodiment of the present invention in a bowed mode;
FIG. 9 is a schematic view of a foldable display device according to an embodiment of the present invention in a bent-in mode;
FIG. 10 is a schematic diagram of a foldable display device in a first state according to an embodiment of the present invention;
fig. 11 is a schematic view of another foldable display device provided in the embodiment of the present invention in a second state.
[ detailed description ] embodiments
For better understanding of the technical solutions of the present invention, the following detailed descriptions of the embodiments of the present invention are provided with reference to the accompanying drawings.
It should be understood that the described embodiments are only some embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The terminology used in the embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the examples of the present invention and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
It should be understood that the term "and/or" as used herein is merely one type of association that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
It should be understood that although the terms first, second, etc. may be used herein to describe regions in embodiments of the present invention, these regions should not be limited by these terms. These terms are only used to distinguish one region from another. For example, a first region may also be referred to as a second region, and similarly, a second region may also be referred to as a first region, without departing from the scope of embodiments of the present invention.
An embodiment of the present invention provides a foldable display device, which includes a display panel, and optionally, as shown in fig. 1, fig. 1 is a schematic cross-sectional view of a display panel provided in an embodiment of the present invention, where the display panel includes a substrate 01, an array layer 02 located on a side of the substrate, and a display film layer 03 located on a side of the array layer 02 away from the substrate 01. The display film layer is provided with a plurality of pixels 030 for emitting light, and the pixels 030 may be, for example, a light emitting display element including an organic light emitting layer, but is not limited thereto. The array layer is provided with a plurality of electric elements such as thin film transistors and storage capacitors constituting a pixel circuit for driving the pixels to emit light.
The drawings of the present embodiment show only a display panel; in other alternative embodiments of the present invention, the display device may further include a protective casing disposed on a side of the display panel opposite to the light emitting surface.
The display panel comprises a first area and a second area, namely, the display panel can be divided into the first area and the second area on the plane where the display panel is located, and a bending area is further arranged between the first area and the second area; the bending region connects the first region and the second region. The provision of the bending region enables the foldable display device to be operable in a plurality of different operational states including a first state and a second state.
Specifically, as shown in fig. 2 and fig. 3, fig. 2 is a schematic view of a foldable display device provided in an embodiment of the present invention in a first state, where the bending region 10 is bent. Fig. 3 is a schematic diagram of a foldable display device in a second state according to an embodiment of the present invention, in which the bending region 10 is unfolded. The first region 11 comprises a first sub-region 110, the second region 12 comprises a second sub-region 120; the optical element 2 is arranged in the second sub-area 120; the optical element 2 is located at the light exit side of the display panel. Alternatively, the optical element 2 may comprise a camera, which is directed towards the light exit side of the display panel.
When the foldable display device is in the second state, the display panel in the foldable display device is in a flat state, that is, the first region, the second region and the bending region are located in the same plane. Specifically, as shown in fig. 3, the first region 11, the second region 12 and the bending region 10 included in the display panel 1 are arranged along the first direction x; the bending region 10 connects the first region 11 and the second region 12.
When the foldable display device is in the first state, as shown in fig. 2, the bending region 10 is bent, and optionally, as shown in fig. 3, the bending region 10 may be bent to the state shown in fig. 2 along a folding axis 100 parallel to the second direction y. Optionally, in this embodiment, one side of the foldable display device facing the light exit surface is folded, that is, folded along a direction opposite to the light exit surface, and the light exit surface is contacted after being bent. As shown in fig. 2, at this time, the first sub-area 110 and the second sub-area 120 overlap, and the first sub-area 110 is in a light-transmitting state. Light in the external environment can enter the optical element 2 located in the second sub-area 120 through the first sub-area 110, that is, the optical element 2 located in the second sub-area 120 can receive the light in the external environment through the first sub-area 110, so that the optical element 2 can form an image by lighting through the first sub-area 110 overlapped with the second sub-area 120, and the optical element 2 can perform operations such as taking a picture or taking a picture.
Alternatively, as shown in fig. 3, when the foldable display device is in the second state, the first region 11 and the second region 12 are symmetrical about the folding axis 100 located at the folding region 10, and thus, after the display panel is folded in half about the folding axis 100, the regions at both sides of the folding axis 100 in the flattened state completely overlap in the first state.
As can be seen from the above description of the operation process of the foldable display device in the first state, when the bending region 10 is bent, the first sub-region 110 is set to be in the light-transmitting state, so that when the optical element 2 located in the second sub-region 120 overlapped with the first sub-region 110 operates, the first sub-region 110 in the light-transmitting state does not affect the lighting performance of the optical element 2, and thus the optical element 2 can be ensured to still operate normally when the foldable display device is in the first state.
Based on this, the embodiment of the present invention may further include the first region 11 and the second region 12 located on both sides of the folding axis 100 being disposed symmetrically with respect to the folding axis 100, so that when the foldable display device is in the first state by bending the bending region 10, the first region 11 and the second region 12 can be completely overlapped, and the area of the foldable display device in the first state can be made as small as possible without affecting the normal operation of the optical element 2 located in the second region 12. Moreover, the arrangement can ensure the thickness uniformity of the foldable display device in the first state, and avoid collision or abrasion of the protruding position caused by uneven thickness. In the prior art, in order to ensure normal lighting of an optical element such as a camera, when the foldable display device is folded, a region provided with the optical element is usually folded while avoiding a region not provided with the optical element, that is, regions on two sides of a folding shaft are not symmetrically folded, and when the foldable display device is folded, the regions on two sides of the folding shaft must be staggered, so that the area of the foldable display device in a folded state is inevitably increased, the foldable display device is inconvenient to carry, and the protruding position of the foldable display device is easily collided or damaged due to the staggered stacking.
As shown in fig. 3, the bending region 10 includes a folding axis 100; in the second state, the bending region 10 is unfolded, and the second sub-region 120 and the first sub-region 110 are symmetrical about the folding axis 100, so that in the first state, the first sub-region 110 in the light-transmitting state can cover the second sub-region 120, thereby ensuring the light-collecting effect of the optical element 2.
It should be noted that the shapes of the first sub-area 110 and the second sub-area 120 are not limited in the embodiment of the present invention, for example, the shapes of the first sub-area 110 and the second sub-area 120 may be set to any shape including a circle, an ellipse, a polygon, etc., and it is only necessary to ensure that the first sub-area 110 overlapping the second sub-area 120 is in a light-transmitting state in the first state.
As shown in fig. 3, the first area 11 further comprises a first non-transparent display area 111 surrounding the first sub-area 110. The second area 12 further comprises a second non-transparent display area 121 surrounding the second sub-area 120. That is, the first sub-area 110 is surrounded by the first non-transparent display area 111, the first sub-area 110 is formed in an island-shaped structure in the first region 11, the second sub-area 120 is surrounded by the second non-transparent display area 121, and the second sub-area 120 is formed in an island-shaped structure in the second region 12. It is understood that, in the embodiment of the present invention, the first sub-area 110 and the first non-transparent display area 111 are divided only by considering the difference of the light transmittances of the first sub-area 110 and the first non-transparent display area 111 in the first state, and there is no obvious boundary therebetween, that is, when the first area 11 is used for displaying, there is no obvious gap between the first sub-area 110 and the first non-transparent display area 111, and the two areas may together form a complete picture to be displayed by the first area 11.
Illustratively, as shown in fig. 3, the first and second non-transparent display regions 111 and 121 include a plurality of first sub-pixels 41 and a first pixel driving circuit (not shown) electrically connected to the first sub-pixels 41, and a plurality of first data lines 61 and a plurality of scanning lines (not shown) electrically connected to the first pixel driving circuit. The display panel further includes a driving unit 7 electrically connected to the first data line 61, and a gate driving circuit VSR electrically connected to the scan line. Illustratively, as shown in fig. 3, the display panel further includes a non-display area NA surrounding the display area including the first non-transparent display area 111 and the second non-transparent display area 121, and the driving unit 7 and the gate driving circuit VSR are located in the non-display area NA of the display panel.
By arranging the optical element 2 in the second sub-area 120 in the second area 12, the second non-transparent display area 121 located at the periphery of the second sub-area 120 in the second area 12 can still normally arrange the first sub-pixels 41 for emitting light, and compared with the scheme of arranging the optical element 2 in the non-display area NA of the foldable display device, the area of the area for displaying in the display panel can be increased, so that the screen occupation ratio of the foldable display device can be improved.
On the basis of ensuring that the first sub-area 110 is in the light-transmitting state in the first state of the foldable display device, the embodiment of the present invention may set the first sub-area 110 as the display area, that is, as shown in fig. 4, fig. 4 is a schematic diagram of another foldable display device provided by the embodiment of the present invention in the second state, the second sub-pixel 42 for displaying may be set in the first sub-area 110, and at this time, the first non-transparent display area 111, the second non-transparent display area 121, and the first sub-area 110 together constitute the display area of the display panel. Alternatively, the first sub area 110 may be set as the non-display area NA, that is, as shown in fig. 3, the second sub pixel for display may not be provided in the first sub area 110, and the following description will be made separately.
When the first sub-area 110 is configured as a transparent non-display area, a physical through hole may be designed at a position corresponding to the first sub-area 110, for example, the substrate at the position corresponding to the first sub-area 110 is cut, the substrate is not configured at the position corresponding to the first sub-area 110, and then various film layers including a light emitting film layer, an encapsulation film layer, a touch control film layer, and the like are not configured at the position. When the foldable display device is operated in the first state by folding the bending region 10, the light rays on the side of the foldable display device far away from the optical element 2 will not be lost when entering the optical element 2 in the second sub-region 120, so as to improve the imaging quality of the optical element 2.
Alternatively, when the first sub-area 110 is set as the transparent non-display area, the substrate at the position corresponding to the first sub-area 110 may not be cut, that is, the substrate is still set at the position corresponding to the first sub-area 110, and then the transparent film layers such as the encapsulation film layer, the touch film layer, and the cover plate may be set at the position, and only the non-transparent film layer including, for example, the light emitting film layer or the light shielding film layer is not set at the position, so that when the folding region 10 is folded to operate the foldable display device in the first state, the imaging quality of the optical element 2 can still be ensured.
When the first sub-area 110 is configured as a transparent display area, as shown in fig. 4 and 5, fig. 5 is a schematic cross-sectional view along AA' of fig. 4, wherein the first sub-area 110 includes a plurality of second sub-pixels 42, a plurality of second pixel driving circuits 52 (not shown in fig. 4) electrically connected to the second sub-pixels 42 in a one-to-one correspondence, a plurality of second data lines 62 (not shown in fig. 5) electrically connected to the second pixel driving circuits 52, and a driving unit 7 electrically connected to the second data lines 62.
On the basis of setting the first sub-area 110 as the transparent display area, the foldable display device can have a plurality of different display modes in the first state and the second state:
for example, in the first state, i.e., when the first sub-area 110 and the second sub-area 120 overlap, the first sub-area 110 may not be displayed. At this time, the driving unit 7 does not provide the data signal to the second data line 62, so that the first sub-area 110 is not used for displaying, and thus when the optical element 2 located in the second sub-area 120 receives the external light through the first sub-area 110, the display screen of the first sub-area 110 can be prevented from affecting the optical element 2, thereby ensuring the shooting effect of the optical element 2.
In the second state, that is, the display panel is in the unfolded state, the first sub-area 110 and the second sub-area 120 do not overlap, as shown in fig. 4, the lighting of the optical element 2 located in the second sub-area 120 is not affected by the first sub-area 110, and therefore, the embodiment of the invention can make the first sub-area 110 and the first non-transparent display area 111 complete the image display together under the driving of the driving unit 7, so as to increase the field of view of the user.
That is to say, through this embodiment, on the basis of increasing the user's field of vision, making this collapsible display device have better display effect, when adopting this collapsible display device to shoot, can also guarantee the shooting effect of optical element 2 that is located in this collapsible display device, make this collapsible display device's shooting function and display function all better.
Alternatively, in the first state, that is, when the first sub-area 110 and the second sub-area 120 overlap, as shown in fig. 6, fig. 6 is an operation schematic diagram of the foldable display device provided in fig. 4 in the first state, the embodiment of the present invention may also display the first sub-area 110, and a dashed arrow in fig. 6 is a schematic diagram of the light emitted by the first sub-area 110 when displaying being directed to the optical element 2. At this time, the embodiment of the present invention may control the optical element 2 to be turned off, so that the first sub-area 110 is used for displaying time, information, or incoming call reminder. Alternatively, the embodiment of the present invention may also open the optical element 2, so that the optical element 2 can capture the display image of the first sub-area 110 at this time, so that the controller disposed in the foldable display device gives different feedback according to the display image. In the second state, that is, when the first sub-area 110 and the second sub-area 120 do not overlap, the driving unit 7 is configured to drive the first non-transparent display area 111 and the second non-transparent display area 121 to display, and at this time, the first sub-area 110 may display to realize a full-screen display of the foldable display device, so as to increase the field of view of the user.
Illustratively, as shown in fig. 6, in the first state, that is, when the bending region 10 is bent to overlap the first sub-region 110 and the second sub-region 120, and the first sub-region 110 displays, the optical element 2 provided by the embodiment of the present invention can control the foldable display device to give different feedbacks according to different pictures displayed by the first sub-region 110. For example, in the first state, when the first sub-area 110 displays the first picture, the optical element 2 in the second sub-area 120 recognizes the first picture and sends a first signal corresponding to the first picture to the controller, and the controller controls the foldable display device to give the first feedback. For example, the first screen may be a screen indicating shutdown, and the first feedback may be a shutdown operation. When the first sub-area 110 displays the second image, the optical element 2 in the second sub-area 120 recognizes the second image and sends a second signal corresponding to the second image to the controller, and the controller controls the foldable display device to give a second feedback. For example, the second screen may be a screen locking indication screen, and the second feedback may be a screen locking operation. The controller may be integrated in the above-mentioned drive unit 7.
For example, the same driving unit 7 may be used to perform time-sharing driving on the first sub-region 110 and the first non-transparent display region 111 or the second non-transparent display region 121, so that the first sub-region 110 and the first non-transparent display region 111 or the second non-transparent display region 121 cooperate with each other. Alternatively, as shown in fig. 4, the driving unit 7 may be provided to include a first driving unit 71 and a second driving unit 72; wherein the first driving unit 71 is connected to the first data line 61; the second driving unit 72 is connected to the second data line 62, that is, the first driving unit 71 and the second driving unit 72 individually drive the first sub-region 110 and the first non-transparent display region 111, and the second non-transparent display region 121, respectively, so that the first sub-region 110 and the first non-transparent display region 111 and the second non-transparent display region 121 operate independently.
It should be understood that in the embodiment of the present invention, the distribution position of the first sub-area 110 in the first region 11 is not limited, for example, the first sub-area 110 and the above-mentioned driving unit 7 may be located on the same side of the display panel, that is, the first sub-area 110 is arranged at the lower edge of the first region 11, and of course, the first sub-area 110 may also be arranged at the opposite side of the driving unit 7, that is, the first sub-area 110 is arranged at the upper edge of the first region 11. Alternatively, the first sub-region 110 and the gate driving circuit VSR may be located on the same side of the display panel, that is, the first sub-region 110 is disposed at the left edge of the first region 11, the first sub-region 110 may be disposed at the opposite side of the gate driving circuit VSR, that is, the first sub-region 110 is disposed at the right edge of the first region 11, and the first sub-region 110 may be disposed inside the first region 11 (as shown in fig. 3 and 4).
Alternatively, the operation mode of the optical element 2 may be varied according to the operation state of the foldable display device. For example, in the second state, i.e., when the first sub-area 110 and the second sub-area 120 do not overlap, as shown in fig. 3 and 4, the optical element 2 located in the second sub-area 120 is in the high resolution mode, and the resolution of the picture taken by it is higher. In the first state, i.e. when the first sub-area 110 and the second sub-area 120 overlap, as shown in fig. 2 and 6, the optical element 2 located in the second sub-area 120 is in the low resolution mode, and the resolution of the picture taken is low. That is, in the embodiment of the present invention, a plurality of optical elements 2 are not required to be provided, and only by adjusting the operating state of the foldable display panel, two shooting modes, i.e., a high resolution mode and a low resolution mode, can be realized by using a single optical element 2, so as to reduce the cost of the optical element 2, and also reduce the space occupied by the optical element 2. Specifically, in the first state, the optical element 2 in the low resolution mode may be used for video call, and in the second state, the optical element 2 in the high resolution mode may be used for capturing high definition pictures, so that the optical element 2 is applied to different scenes.
For example, the optical element 2 can be used to recognize that the foldable display device is in the first state or the second state, and then each element in the foldable display device, including the optical element 2, can be adjusted in different working states according to the recognition result, for example, the optical element 2 is switched between a high resolution mode and a low resolution mode; and to switch the first sub-section 110 between a display mode and a non-display mode, etc.
Illustratively, when the first sub-area 110 is set as a transparent display area, the light transmittance T of the first sub-area 110 is greater than or equal to 30% to ensure the amount of light entering the external environment of the optical element 2 located in the second sub-area 120 via the first sub-area 110, i.e. to improve the lighting effect of the optical element 2 located in the second sub-area.
Specifically, the embodiment of the present invention can increase the light transmittance of the first sub-region 110 by reducing the area ratio of the light-shielding element including the second pixel driving circuit 52 and the like in the first sub-region 110. As shown in fig. 5, the number of the first pixel driving circuits 51 included in the first non-transparent display area 111 and the second non-transparent display area (not shown) is greater than the number of the second pixel driving circuits 52 included in the first sub-area 110 having the same area, for example, when the number of the first sub-pixels 41 included in the first non-transparent display area and the number of the second sub-pixels 42 included in the first sub-area 110 having the same area are set to be the same, one second pixel driving circuit 52 may be connected to at least two second sub-pixels 42, so as to increase the light transmittance of the first sub-area 110.
Alternatively, as shown in fig. 7, fig. 7 is a schematic cross-sectional view along BB' of fig. 4, wherein the display panel further includes a first substrate 81 and a second substrate 82 disposed opposite to each other, and a plurality of first sub-pixels 41 disposed between the first substrate 81 and the second substrate 82. As shown in fig. 4 and 7, in the second state, the bending region 10 is unfolded, that is, when the first sub-region 110 and the second sub-region 120 do not overlap, the first substrate 81 located in the first region 11 and the first substrate 81 located in the second region 12 are in the same plane, and the second substrate 82 located in the first region 11 and the second substrate 82 located in the second region 12 are in the same plane. In the second state, the plurality of first sub-pixels 41 emit light to increase the field of view of the user. Exemplarily, as shown in fig. 7, the light emitting direction of the display panel includes a direction in which the second substrate 82 is far away from the first substrate 81.
Specifically, the first state includes an outward bending mode shown in fig. 8 and an inward bending mode shown in fig. 9; fig. 8 is a schematic view of the foldable display device in the outward bending mode according to the embodiment of the present invention, as shown in fig. 8, wherein the second substrate 82 located in the first region 11 faces the second substrate 82 located in the second region 12; the first substrate 81 located in the first region 11 and the first substrate 81 located in the second region 12 are stacked, and the arrow in fig. 8 indicates the light emitting direction, so that the display screen of the foldable display device can be still observed through the first region 11 and the second region 12 in the first state.
As shown in fig. 9, fig. 9 is a schematic view of the foldable display device provided in the embodiment of the invention in the inward bending mode, wherein the first substrate 81 located in the first region 11 faces the first substrate 81 located in the second region 12; the second substrate 82 located in the first region 11 and the second substrate 82 located in the second region are laminated to each other. At this time, the foldable display device does not display, and can be reduced in size and carried conveniently by folding it.
Exemplarily, as shown in fig. 9, the display panel further includes a plurality of third sub-pixels 43 located on a side of the first substrate 81 away from the second substrate 82, and the light emitting direction of the display panel further includes a direction of the first substrate 81 away from the second substrate 82; wherein the third sub-pixel 43 is used for displaying the image taken by the optical element 2 when the foldable display panel is in the inflected mode. Optionally, the display panel further includes a second display layer located on one side of the first substrate far from the second substrate, the third sub-pixel is located on the second display layer, and the second display layer includes a second array layer, a second light-emitting functional layer, and a second protective layer. In this embodiment, the second display layer multiplexes the first substrate to serve as a substrate of the display layer, but in other optional embodiments, the second display layer may additionally be provided with a substrate and then attached to the first substrate through an adhesive layer, and optionally, the second display layer is a rigid display layer.
Exemplarily, as shown in fig. 10, fig. 10 is a schematic diagram of a foldable display device provided in an embodiment of the present invention in a first state, where the foldable display device further includes a touch module 91, a determination module 92, and a control module 93 electrically connected to each other; the touch module 91 is used for receiving instruction information input by a user; the judging module 92 is configured to judge whether the instruction information is consistent with the preset information; when the instruction information is consistent with the preset information, the control module 93 is configured to turn on the optical element 2. In practical applications, a preset message may be stored in the foldable display device in advance, when the foldable display device is used to open the optical element 2, a user may input an instruction message to the touch module 91, and then the determining module 92 is used to compare the preset message with the instruction message to determine whether the instruction message is consistent with the preset message. When the preset information and the command information are consistent, the control module 93 may turn on the optical element 2, i.e., wake up the optical element 2. When the preset information and the command information are not consistent, the control module 93 controls the optical element 2 to be in the closed state. That is to say, the touch module 91, the judgment module 92 and the control module 93 can wake up the optical element 2 by sensing the touch information of the user, so that the opening action of the optical element 2 is simplified, the operation is convenient, and the user experience is improved.
Optionally, as shown in fig. 10, the touch module 91, the determination module 92, and the control module 93 are integrated in the first sub-area 110 to avoid affecting the screen ratio of the display panel when the touch module is disposed in the first non-transparent display area or the second non-transparent display area.
Illustratively, as shown in fig. 10, the foldable display device further comprises a function sensor 90, the function sensor 90 overlaps with the projection of the optical element 2 on the plane of the display panel, and the function sensor 90 is located on the backlight side of the display panel. In the embodiment of the present invention, when the foldable display device is unfolded, the optical element 2 may be caused to take an image located on the side of the optical element 2 facing the light exit side of the display panel, that is, the optical element 2 may be caused to function as a front camera. When the foldable display device is folded, the optical element 2 can be made to take an image on the side of the optical element 2 facing away from the light exit side of the display panel, that is, the optical element 2 can be used as a rear camera, and therefore, compared with the prior art that at least two optical elements 2 are needed to realize a front camera and a rear camera, in the foldable display device provided by the embodiment of the invention, only one optical element 2 is needed, this not only reduces the cost of the optical element 2, but also reduces the space occupied by the optical element 2, on this basis, the embodiment of the present invention can use the saved space for disposing the function sensor 90, on the premise of not additionally increasing the area of a non-display area in the display panel, the using function of the foldable display device is enriched.
Illustratively, the functional sensor 90 includes one or more of an infrared sensor, a gravity sensor, an acceleration sensor, and a magnetic field sensor.
Illustratively, in addition to the manner of disposing the first sub-region 110 to be surrounded by the first non-transparent display region 111 shown in fig. 3 and 4, the embodiment of the invention may also dispose the position of the first sub-region 110 to be independent of the first non-transparent display region 111, specifically, as shown in fig. 11, fig. 11 is a schematic diagram of another foldable display device provided by the embodiment of the invention in the second state, wherein the first sub-region 110 and the gate driving circuit VSR are both located in the non-display region NA, and no pixel for displaying is disposed in the region surrounding the first sub-region 110. Correspondingly, the second sub-area 120 and the optical element 2 located in the second sub-area 120 are also independent from the second non-transparent display area 121.
As shown in fig. 11, the gate driving circuit VSR may include a first gate driving circuit VSR1 located on a side of the first non-transparent display region 111 away from the bending region 10, and a second gate driving circuit VSR2 located on a side of the second non-transparent display region 121 away from the bending region 10. Alternatively, when the scan lines 63 are disposed in the display panel, the scan lines disposed in the first non-transparent display region 111 and the second non-transparent display region 121 may be disposed independently, and when the display panel performs display, the first gate driving circuit VSR1 and the second gate driving circuit VSR2 are used to provide scan signals to the scan lines disposed in the first non-transparent display region 111 and the second non-transparent display region 121, respectively. Alternatively, the scan lines in the first non-transparent display region 111 and the scan lines in the second non-transparent display region 121 may be connected to each other, and when the display panel performs display, signals are provided to the scan lines 63 by using the first gate driving circuit VSR1 and the second gate driving circuit VSR2 in a dual-edge driving manner, and at this time, the timing control signals provided by the driving chip 7 may be matched to implement independent display of the first non-transparent display region 111 and the second non-transparent display region 121.
For example, as shown in fig. 11, in the embodiment of the invention, by disposing the first sub-region 110 between the first gate driving circuit VSR1 and the first non-transparent display region 111, when the first gate driving circuit VSR1 is used to supply signals to the scan lines located in the first non-transparent display region 111, the connection lines 64 connecting the first gate driving circuit VSR1 and the scan lines 63 and the first sub-region 110 can be disposed in a part of the non-display region NA in a concentrated manner, and compared with the case where the first sub-region 110 is disposed in the first gate driving circuit VSR1 away from the first non-transparent display region 111, the area of the non-display region NA can be reduced, and the screen ratio of the display panel can be improved.
For example, as shown in fig. 11, when the first sub-region 110 is disposed between the first gate driving circuit VSR1 and the first non-transparent display region 111, the connection line 64 connecting the first gate driving circuit VSR1 and the scan line 63 may be disposed to avoid the first sub-region 110 to ensure the light transmissivity of the first sub-region 110.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (19)
1. A foldable display device is characterized by comprising a display panel, wherein the display panel comprises a first area, a second area and a bending area which are arranged along a first direction; the bending area is connected with the first area and the second area;
the first region comprises a first sub-region and the second region comprises a second sub-region; an optical element is arranged in the second sub-area; the optical element is positioned on the light-emitting side of the display panel;
in a first state, the bending region is bent, the first sub-region and the second sub-region are overlapped, and the first sub-region is in a light-transmitting state.
2. The foldable display device of claim 1,
the bending region comprises a folding shaft; in a second state, the bending region is unfolded, and the second sub-region and the first sub-region are symmetrical about the folding axis.
3. The foldable display device of claim 2,
the first region further comprises a first non-transparent display area surrounding the first sub-region.
4. The foldable display device of claim 3,
the first sub-area is a transparent display area.
5. The foldable display device of claim 4,
in the first state, when the first sub-area displays a first picture, the optical element in the second sub-area recognizes the first picture and sends a first signal corresponding to the first picture to a controller, and the controller controls the foldable display device to give a first feedback; when the first sub-area displays a second picture, the optical element in the second sub-area recognizes the second picture and sends a second signal corresponding to the second picture to the controller, and the controller controls the foldable display device to give a second feedback.
6. The foldable display device of claim 4,
the working modes of the optical element comprise a high resolution mode and a low resolution mode;
in the second state, the optical element is in a high resolution mode;
in the first state, the optical element is in a low resolution mode.
7. The foldable display device of claim 4,
the optical element is used for identifying that the foldable display device is in the first state or the second state.
8. The foldable display device of claim 4,
in the first state, the first sub-area is not displayed;
and in the second state, the first sub-area and the first non-transparent display area jointly complete the picture display.
9. The foldable display device of claim 4,
the light transmittance T of the first sub-area is more than or equal to 30 percent.
10. The foldable display device of claim 9,
the second region further comprises a second non-transparent display area surrounding the second sub-region;
the first non-transparent display area and the second non-transparent display area further comprise a plurality of first sub-pixels and a first pixel driving circuit, and the first pixel driving circuit is correspondingly and electrically connected with the plurality of first sub-pixels positioned in the first non-transparent display area and the second non-transparent display area;
the first sub-area comprises a plurality of second sub-pixels and a plurality of second pixel driving circuits which are electrically connected with the second sub-pixels in a one-to-one correspondence mode;
the number of the first pixel driving circuits included in the first non-transparent display area and the second non-transparent display area is greater than the number of the second pixel driving circuits included in the first sub-area having the same area.
11. The foldable display device of claim 10,
the first non-transparent display area and the second non-transparent display area comprise a plurality of first data lines, and the first sub-area comprises a plurality of second data lines;
the display panel includes a driving unit electrically connected to the first data line and the second data line;
in the second state, the driving unit is used for driving the first non-transparent display area and the second non-transparent display area to display;
in the first state, the driving unit is used for driving the first sub-area to display.
12. The folding display device of claim 11,
the driving unit comprises a first driving unit and a second driving unit; the first data line is connected with the first driving unit; the second data line is connected to the second driving unit.
13. The foldable display device of claim 3, wherein the first sub-area is a transparent non-display area.
14. The foldable display device of claim 1,
the display panel comprises a first substrate and a second substrate which are oppositely arranged, and a plurality of first sub-pixels positioned between the first substrate and the second substrate;
in a second state, the bending region is unfolded, the first substrate located in the first region and the first substrate located in the second region are in the same plane, and the second substrate located in the first region and the second substrate located in the second region are in the same plane.
15. The foldable display device of claim 14,
the light emitting direction of the display panel comprises the direction of the second substrate far away from the first substrate;
the first state comprises an outward bending mode and an inward bending mode;
when the display panel is in a bowing-out mode, the second substrate located in the first region faces the second substrate located in the second region; the first substrate positioned in the first region and the first substrate positioned in the second region are stacked on each other;
when the display panel is in a bending-in mode, the first substrate located in the first area faces the first substrate located in the second area; the second substrate positioned in the first region and the second substrate positioned in the second region are laminated with each other.
16. The foldable display device of claim 15,
the display panel further comprises a plurality of third sub-pixels positioned on one side of the first substrate far away from the second substrate, and the light emergent direction of the display panel further comprises the direction of the first substrate far away from the second substrate; the third sub-pixel is used for displaying an image shot by the optical element when the display panel is in the inward bending mode.
17. The foldable display device of claim 1,
the foldable display device also comprises a touch module, a judgment module and a control module which are electrically connected;
the touch module is used for receiving instruction information input by a user;
the judging module is used for judging whether the instruction information is consistent with preset information or not;
and when the instruction information is consistent with the preset information, the control module is used for starting the optical element.
18. The foldable display device of claim 17, wherein the touch module, the determination module and the control module are integrated in the first sub-area.
19. The foldable display device of claim 1, further comprising a functional sensor overlapping a projection of the optical element onto a plane of the display panel, wherein the functional sensor is located on a backlight side of the display panel;
the functional sensor comprises one or more of an infrared sensor, a gravity sensor, an acceleration sensor and a magnetic field sensor.
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| CN201910152723.6A CN109727540B (en) | 2019-02-28 | 2019-02-28 | Foldable display device |
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| CN201910152723.6A CN109727540B (en) | 2019-02-28 | 2019-02-28 | Foldable display device |
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| CN109727540B true CN109727540B (en) | 2021-02-26 |
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| CN110491910B (en) * | 2019-07-30 | 2022-04-26 | 武汉华星光电半导体显示技术有限公司 | Display panel, preparation method thereof and display device |
| CN112735261A (en) * | 2019-10-28 | 2021-04-30 | 华为技术有限公司 | Flexible display screen and display terminal |
| KR20210082895A (en) * | 2019-12-26 | 2021-07-06 | 엘지디스플레이 주식회사 | Foldable display device |
| CN111128028A (en) | 2019-12-31 | 2020-05-08 | 武汉华星光电半导体显示技术有限公司 | Bendable display panel, display device and display equipment |
| CN111667791B (en) * | 2020-07-08 | 2021-08-13 | Oppo广东移动通信有限公司 | Display screen driving circuit, method, electronic device and storage medium |
| CN111863895A (en) * | 2020-07-16 | 2020-10-30 | 武汉华星光电半导体显示技术有限公司 | Foldable display screen |
| CN112233556B (en) * | 2020-10-29 | 2022-04-29 | 厦门天马微电子有限公司 | Display panel and display device |
| CN114489364A (en) | 2020-11-11 | 2022-05-13 | 京东方科技集团股份有限公司 | Display device and control method thereof |
| CN112700725B (en) * | 2021-01-08 | 2022-03-08 | 武汉华星光电半导体显示技术有限公司 | Display device |
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| JP5647819B2 (en) * | 2010-06-11 | 2015-01-07 | 任天堂株式会社 | Portable electronic devices |
| KR101889838B1 (en) * | 2011-02-10 | 2018-08-20 | 삼성전자주식회사 | Portable device having touch screen display and method for controlling thereof |
| KR102358935B1 (en) * | 2014-02-12 | 2022-02-04 | 가부시키가이샤 한도오따이 에네루기 켄큐쇼 | Electronic device |
| KR101727971B1 (en) * | 2014-02-21 | 2017-04-18 | 삼성전자주식회사 | Foldable device |
| KR102276192B1 (en) * | 2014-03-07 | 2021-07-12 | 엘지디스플레이 주식회사 | Foldable display apparatus |
| KR102414855B1 (en) * | 2015-04-30 | 2022-07-01 | 삼성전자주식회사 | Flexible electronic device |
| KR102460466B1 (en) * | 2016-07-06 | 2022-10-28 | 삼성전자주식회사 | Foldable electronic device including flexible display |
| US9918395B1 (en) * | 2016-09-13 | 2018-03-13 | Motorola Mobility Llc | Three part foldable housing supporting multiple use positions in an electronic device |
| CN107835277B (en) * | 2016-11-16 | 2020-01-14 | Oppo广东移动通信有限公司 | Leading camera mounting structure and mobile terminal of mobile terminal |
| KR101995977B1 (en) * | 2016-11-28 | 2019-07-04 | 삼성디스플레이 주식회사 | Flexible display apparatus |
| CN107180597B (en) * | 2017-05-23 | 2019-09-27 | 京东方科技集团股份有限公司 | Display device and its control circuit |
| KR102350059B1 (en) * | 2017-07-11 | 2022-01-11 | 엘지이노텍 주식회사 | Optical apparatus |
| CN208128323U (en) * | 2018-05-04 | 2018-11-20 | Oppo广东移动通信有限公司 | Mobile terminal |
| CN108449461A (en) * | 2018-05-25 | 2018-08-24 | Oppo广东移动通信有限公司 | Folding device |
| CN208386624U (en) * | 2018-05-25 | 2019-01-15 | Oppo广东移动通信有限公司 | folding device |
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