CN111399594A - Flexible display device and folding angle detection method thereof - Google Patents
Flexible display device and folding angle detection method thereof Download PDFInfo
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- CN111399594A CN111399594A CN202010266057.1A CN202010266057A CN111399594A CN 111399594 A CN111399594 A CN 111399594A CN 202010266057 A CN202010266057 A CN 202010266057A CN 111399594 A CN111399594 A CN 111399594A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/16—Constructional details or arrangements
- G06F1/1613—Constructional details or arrangements for portable computers
- G06F1/1633—Constructional details or arrangements of portable computers not specific to the type of enclosures covered by groups G06F1/1615 - G06F1/1626
- G06F1/1637—Details related to the display arrangement, including those related to the mounting of the display in the housing
- G06F1/1652—Details related to the display arrangement, including those related to the mounting of the display in the housing the display being flexible, e.g. mimicking a sheet of paper, or rollable
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/26—Measuring arrangements characterised by the use of optical techniques for measuring angles or tapers; for testing the alignment of axes
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/301—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements flexible foldable or roll-able electronic displays, e.g. thin LCD, OLED
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/33—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being semiconductor devices, e.g. diodes
Abstract
The invention provides a flexible display device and a folding angle detection method thereof.A light emitting component emits detection light, a rotating reflecting component rotates around a rotating shaft according to a preset frequency and reflects the detection light in the rotating process, a light receiving component detects the detection light reflected by the rotating reflecting component, an optimal reflection angle corresponding to the maximum light intensity value is obtained according to the corresponding relation between the light intensity value of the detection light and the reflection angle of the rotating reflecting component, and the folding angle of a flexible display panel is obtained according to the corresponding relation between the optimal reflection angle and the folding angle. Since the positional relationship between the light receiving part and the rotating reflection part changes with the change of the folding angle of the flexible display panel, an arbitrary folding angle of the flexible display panel can be obtained according to the detection light reflected and received at an arbitrary positional relationship between the rotating reflection part and the light receiving part, thereby improving the detection range and the detection accuracy of the folding angle of the flexible display device.
Description
Technical Field
The invention relates to the technical field of flexible display, in particular to a flexible display device and a folding angle detection method thereof.
Background
With the development of technology, flexible display panels have become a new development trend. The existing flexible display panel has at least one bending region, and the flexible display panel can be folded along the direction of the bending region. In the process of folding the flexible display panel, different folding states can correspond to different display states, for example, when non-bending regions on two sides of the bending region are overlapped together, the flexible display panel can enter a standby state. However, in order to realize different folding states corresponding to different display states, an angle detection device, such as a hall sensor, needs to be installed in the flexible display panel, but the existing angle detection device and detection method can only realize the detection of a plurality of specific folding angles, and the detection precision is low.
Disclosure of Invention
In view of this, the present invention provides a flexible display device and a method for detecting a folding angle thereof, so as to improve a detection range and a detection accuracy of a folding angle of a flexible display panel.
In order to achieve the purpose, the invention provides the following technical scheme:
a flexible display device comprising:
a flexible display panel including a folding region and non-folding regions positioned at both sides of the folding region;
the folding device comprises a light emitting component and a rotating reflection component, wherein the light emitting component and the rotating reflection component are arranged on one side of a folding area, the light emitting component is used for emitting detection light, and the rotating reflection component is used for rotating around a rotating shaft according to a preset frequency and reflecting the detection light in the rotating process;
a light receiving part disposed at the other side of the folding region, a positional relationship of the light receiving part and the rotating reflection part being changed as a folding angle of the flexible display panel is changed;
the light receiving part is used for detecting the detection light reflected by the rotating reflection part, obtaining the optimal reflection angle of the rotating reflection part corresponding to the maximum light intensity value of the detection light according to the corresponding relation between the light intensity value of the detection light and the reflection angle of the rotating reflection part, and obtaining the folding angle of the flexible display panel according to the corresponding relation between the optimal reflection angle and the folding angle of the flexible display panel;
wherein the correspondence between the optimal reflection angle and the folding angle of the flexible display panel is obtained from the positional relationship between the light receiving part and the rotating reflection part and the folding area.
A folding angle detection method of a flexible display device is applied to the flexible display device, and comprises the following steps:
the light emitting member emits detection light;
the rotating reflection component rotates around a rotating shaft according to a preset frequency and reflects the detection light in the rotating process;
the light receiving component detects the detection light reflected by the rotating reflection component, so as to obtain the optimal reflection angle of the rotating reflection component corresponding to the maximum light intensity value according to the maximum light intensity value of the detection light obtained by detection and the corresponding relation between the maximum light intensity value of the detection light and the reflection angle of the rotating reflection component, and obtain the folding angle of the flexible display panel according to the corresponding relation between the optimal reflection angle and the folding angle of the flexible display panel;
wherein the correspondence of the optimal reflection angle to the flexible display panel is obtained from a positional relationship of the light receiving part and the rotating reflection part.
Compared with the prior art, the technical scheme provided by the invention has the following advantages:
the invention provides a flexible display device and a folding angle detection method thereof.A light emitting component emits detection light, a rotating reflecting component rotates around a rotating shaft according to a preset frequency and reflects the detection light in the rotating process, a light receiving component detects the detection light reflected by the rotating reflecting component, the optimal reflecting angle of the rotating reflecting component corresponding to the maximum light intensity value of the detection light is obtained according to the corresponding relation between the light intensity value of the detection light and the reflecting angle of the rotating reflecting component, and the folding angle of the flexible display panel is obtained according to the corresponding relation between the optimal reflecting angle and the folding angle of the flexible display panel. Since the positional relationship between the light receiving part and the rotating reflection part changes with the change of the folding angle of the flexible display panel, an arbitrary folding angle of the flexible display panel can be obtained according to the detection light reflected and received at an arbitrary positional relationship between the rotating reflection part and the light receiving part, thereby improving the detection range and the detection accuracy of the folding angle of the flexible display device.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic cross-sectional structure diagram of a flexible display device in an unbent state according to an embodiment of the present invention;
fig. 2 is a schematic top view of a flexible display device in an unbent state according to an embodiment of the present invention;
fig. 3 is a schematic cross-sectional view of a flexible display device in a bent state according to an embodiment of the present invention;
fig. 4 is a schematic cross-sectional view of a flexible display device in another bending state according to an embodiment of the present invention;
fig. 5 is a schematic cross-sectional view of another flexible display device in a bent state according to an embodiment of the present invention;
fig. 6 is a schematic cross-sectional view of another flexible display device in a bent state according to an embodiment of the present invention;
fig. 7 is a schematic cross-sectional view of another flexible display device in a bent state according to an embodiment of the present invention;
fig. 8 is a schematic cross-sectional view of another flexible display device in a bent state according to an embodiment of the present invention;
fig. 9 is a flowchart of a method for detecting a folding angle of a flexible display device according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, so that the above is the core idea of the present invention, and the above objects, features and advantages of the present invention can be more clearly understood. 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 embodiment of the invention provides a flexible display device which can be applied to electronic equipment such as a mobile phone, a tablet personal computer and a notebook computer. As shown in fig. 1 and fig. 2, fig. 1 is a schematic cross-sectional structure diagram of a flexible display device provided in an embodiment of the present invention in a non-bent state, and fig. 2 is a schematic top-view structure diagram of the flexible display device provided in the embodiment of the present invention in the non-bent state, where the flexible display device includes a flexible display panel 1, a light emitting part 20, a rotating reflection part 21, and a light receiving part 22.
The flexible display panel 1 includes a folding region 10 and non-folding regions 11 located at two sides of the folding region 10, the flexible display panel 1 is a display panel capable of independently displaying, and includes a flexible substrate, L ED or O L ED disposed on the flexible substrate, a driving circuit, and the like, in a non-folding state, as shown in fig. 1 and fig. 2, the folding region 10 and the non-folding region 11 are in a flat state, and in a folding state, as shown in fig. 3 and fig. 4, fig. 3 is a schematic cross-sectional structure diagram of a flexible display device provided in an embodiment of the present invention in one folding state, fig. 4 is a schematic cross-sectional structure diagram of the flexible display device provided in an embodiment of the present invention in another folding state, and two non-folding regions 11 are bent to a direction close to the folding region 10 to form an approximate U shape or L shape, and the like.
The light emitting part 20 and the rotating reflection part 21 are disposed at one side of the folding region 10, the light receiving part 22 is disposed at the other side opposite to the folding region 10, that is, the light emitting part 20 and the rotating reflection part 21 are disposed at the non-folding region 11 at one side of the folding region 10, the light receiving part 22 is disposed at the other non-folding region 11 at the other side opposite to the folding region 10, and the positional relationship of the light receiving part 22 and the rotating reflection part 21 is changed as the folding angle of the flexible display panel 1 is changed.
In an embodiment of the present invention, the light emitting means 20 is used to emit detection light, alternatively, the light emitting means 20 is L ED or a laser or the like that emits infrared light, i.e., the light emitting means 20 includes an infrared generator, although the present invention is not limited thereto, and in other embodiments, the light emitting means 20 may be a means that emits other light such as ultraviolet light.
The rotating reflecting member 21 is configured to rotate around the rotating axis O at a predetermined frequency and to reflect the detection light during the rotation. Optionally, as shown in fig. 1 and fig. 2, the rotating reflection component 21 is a triangular prism, of course, the present invention is not limited thereto, and in other embodiments, the rotating reflection component 21 may also be a polygonal prism or a cylinder, such as a quadrangular prism or a pentagonal prism, and will not be described herein again. The surface of the polygonal column or the cylinder may have a reflective layer to reflect the detection light, or the polygonal column or the cylinder itself may be made of a reflective material. That is, the rotating reflective member 21 includes a prism having a plurality of reflective surfaces, and the rotation axis O is the center axis of the prism.
The light receiving surface of the light receiving part 22 is disposed in correspondence with the reflection surface of the rotating reflection part 21 so that the light receiving surface of the light receiving part 22 receives the detection light reflected by the reflection surface of the rotating reflection part 21. The light receiving part 22 is configured to detect the detection light reflected by the rotating reflection part 21, obtain an optimal reflection angle of the rotating reflection part 21 corresponding to a maximum light intensity value of the detection light according to a corresponding relationship between a light intensity value of the detected detection light and a reflection angle of the rotating reflection part 21, and obtain a folding angle of the flexible display panel 1 according to a corresponding relationship between the optimal reflection angle and a folding angle of the flexible display panel 1.
Alternatively, the light receiving part 22 includes a photodetector or a photosensor or the like provided in correspondence with the light emitting part 20, i.e., the light receiving part 22 includes an infrared receiver. That is, when the light emitting part 20 is an infrared light emitting part, the light receiving part 22 includes an infrared light detector or the like.
In the embodiment of the present invention, as the folding angle of the flexible display panel 1 changes, the positional relationship between the rotating reflection part 21 and the light receiving part 22 changes, for example, the angle between the connecting line between the rotating reflection part 21 and the light receiving part 22 and the plane of the non-folding area 11 changes. Based on this, the current folding angle can be obtained according to the angle between the line connecting the rotating reflecting member 21 and the light receiving member 22 and the plane in which the non-folding region 11 is located in any folding state, i.e., any folding angle.
As shown in fig. 3, the positional relationship between the light emitting member 20 and the rotating reflecting member 21 does not change with the change of the folding angle, and based on this, when the rotating reflecting member 21 is rotated about the rotating axis O in the arrow direction at a predetermined frequency at any folding angle, that is, at any positional relationship between the rotating reflecting member 21 and the light receiving member 22, the position where the detection light is irradiated to the non-folding area 11 where the light receiving member 22 is located changes from S1 to S2, and the light intensity value detected by the light receiving member 22 is maximum only when the rotating reflecting member 21 is rotated to a certain position, that is, when the reflection angle of the rotating reflecting member 21 is the optimum reflection angle.
Therefore, in the embodiment of the present invention, in any positional relationship, the rotating reflecting member 21 is made to rotate around the rotating axis O in the arrow direction at a preset frequency, and the light receiving member 22 is made to constantly detect the light intensity value of the detection light, so that the relationship between the change in the light intensity value and the time can be obtained, and since the relationship between the change in the reflection angle of the rotating reflecting member 21 and the time is known during the rotation of the rotating reflecting member 21, the correspondence relationship between the light intensity value of the detection light and the reflection angle of the rotating reflecting member 21, such as the relationship curve therebetween, can be obtained, and the optimum reflection angle corresponding to the maximum light intensity value of the detection light can be obtained therefrom. Since the positional relationship between the light receiving part 22 and the rotating reflection part 21 and the folding region 10 is predetermined and known, the correspondence relationship between the optimum reflection angle of the rotating reflection part 21 and the folding angle of the flexible display panel 1 can be obtained based on this, and thus the folding angle of the flexible display panel 1 can be obtained from the correspondence relationship between the optimum reflection angle and the folding angle of the flexible display panel 1 after the optimum reflection angle in any positional relationship is obtained.
Since the folding angle of the flexible display panel 1 at any positional relationship between the light receiving part 22 and the rotating reflection part 21 can be obtained in the embodiment of the present invention, the folding angle of the flexible display panel 1 in any folding state can be detected in the embodiment of the present invention, that is, the detection range and the detection accuracy of the folding angle of the flexible display device in the embodiment of the present invention are large.
Alternatively, after the flexible display panel 1 enters the standby state, that is, after the folding angle of the flexible display panel 1 is 0 °, the light emitting part 20, the rotating reflecting part 21, and the light receiving part 22 stop operating; after the flexible display panel 1 is lit into the display state, i.e., after the folding angle of the flexible display panel 1 is greater than 0 °, the light emitting part 20, the rotating reflecting part 21, and the light receiving part 22 start to operate. Alternatively, when the flexible display panel 1 is in a flat state, the folding angle is 180 °. Optionally, after the rotating reflection component 21 enters the working state, it rotates within a range of 0 to 45 degrees according to a preset fixed frequency. Wherein 0 to 45 degrees is a reflection angle range of the rotary reflection member 21. Of course, in the practical application process, the frequency and the reflection angle range can be set according to the practical situation.
Alternatively, in an embodiment of the present invention, the light receiving part 22 and the rotating reflection part 21 are located at a first distance D1 from the folding region 10, the rotating reflection part 21 is located at a second distance D2 from the folding region 10, and the first distance D1 is equal to the second distance D2, so that the optimal reflection angle obtained according to the location relationship of the light receiving part 22 and the rotating reflection part 21 to the folding region 10 corresponds to the folding angle of the flexible display panel 1, where θ is 180 ° -4 α, where θ is the folding angle of the flexible display panel 1 and α is the optimal reflection angle.
As shown in fig. 4, since D1 is D2, an angle a between a line connecting the rotating reflecting member 21 and the light receiving member 22 and a plane in which one non-folding region 11 is located and an angle B between the line and a plane in which the other non-folding region 11 is located are equal, that is, a is B, an incident angle is equal to a reflection angle according to the principle of reflection, B is 2 α, and a + B + θ is 180 ° according to the fact that the sum of inner angles of triangles is equal to 180 °, so that θ is 180 ° -2B is 180 ° -4 α.
In other embodiments, as long as the first distance from the light receiving part 22 to the folding region 10 and the second distance from the rotating reflection part 21 to the folding region 10 are known, the relationship between the included angle a and the included angle B can be calculated, and as long as B is 2 α, the relationship between θ and α can be obtained, and the folding angle θ can be calculated from α obtained by measurement.
It should be further noted that the flexible display panel 1 in the embodiment of the present invention is a flexible display panel having no light-blocking structure such as a supporting structure on the back surface, that is, the detection light can penetrate through the flexible display panel 1 and be detected by the light-receiving device 22 on the back surface of the flexible display panel 1.
Of course, the present invention is not limited thereto, and in another embodiment, as shown in fig. 5, fig. 5 is a schematic cross-sectional view of another flexible display device provided in an embodiment of the present invention in a bent state, a non-display side of the flexible display panel 1 has a supporting structure 3, and the supporting structure 3 is used for supporting and fixing the flexible display panel 1. Since the material of the supporting structure 3 has poor light transmittance, in the embodiment of the present invention, the supporting structure 3 has a first opening 31 and a second opening 32, the first opening 31 is located on one side of the folding region 10, the second opening 32 is located on the other side of the folding region 10, and the rotating reflection part 21 is located in the first opening 31, and the light receiving part 22 is located in the second opening 32. Based on this, the rotating reflecting member 21 can reflect the detection light to the first opening 31 and transmit it to the light receiving member 22 through the first switch 31 and the second opening 32.
In the embodiment of the present invention, the light emitting component 20, the rotating reflection component 21 and the light receiving component 22 may be located on the back side, i.e. the non-display side, of the flexible display panel 1, but the present invention is not limited thereto, and in other embodiments, as shown in fig. 6, fig. 6 is a schematic cross-sectional structure diagram of another flexible display device provided in the embodiment of the present invention in a bent state, in order not to affect the back structure of the flexible display panel 1, the light emitting component 20, the rotating reflection component 21 and the light receiving component 22 may also be located on the bent inner side, i.e. the display side, of the flexible display panel 1, or located inside the flexible display panel 1, wherein, in order not to affect the display effect of the display area, the light emitting component 20, the rotating reflection component 21 and the light receiving component 22 may be disposed on the non-display area.
In another embodiment of the present invention, the light emitting device 20, the rotating reflection member 21, and the light receiving device 22 may also be located at the side of the flexible display panel 1 for convenience of application. As shown in fig. 7, fig. 7 is a schematic cross-sectional structure diagram of another flexible display device in a bending state according to an embodiment of the present invention, in which the flexible display panel 1 includes a first side C1 and a second side C2 that are oppositely disposed, and the first side C1 and the second side C2 are parallel to a folding axis of the folding area 10, wherein the light receiving part 22 is disposed at the first side C1 of the flexible display panel 1, and the rotating reflection part 21 is disposed at the second side C2 of the flexible display panel 1.
In an embodiment of the present invention, the flexible display panel 1 may be bent to only one side, such as to the display side, while in another embodiment of the present invention, the flexible display panel 1 may be bent to two sides, i.e. both the display side and the non-display side, based on which, as shown in fig. 8, fig. 8 is a schematic cross-sectional structure diagram of another flexible display device provided by an embodiment of the present invention in a bent state, the light receiving part 22 includes a first light receiving part 221 and a second light receiving part 222, the flexible display panel 1 includes a display side X1 and a non-display side X2 which are oppositely arranged, wherein a receiving surface of the first light receiving part 221 faces the display side X1 to obtain a folding angle of the display side X1 of the flexible display panel 1 according to the detection light reflected by the rotating reflection part 21; the receiving surface of the second light receiving part 222 faces the non-display side X2 to obtain the folding angle of the non-display side X2 of the flexible display panel 1 from the detection light reflected 21 by the rotating reflecting part. Based on this, detection of the folding angle of the two side surfaces of the flexible display panel 1, i.e., the display side X1 and the non-display side X2, can be achieved by one light emitting part, one rotating reflection part, and two light receiving parts.
The first light receiving part 221 and the second light receiving part 222 may be located on the same side of the flexible display panel 1, as shown in fig. 8, or may be located on different sides of the flexible display panel 1, which is not described herein again.
An embodiment of the present invention further provides a method for detecting a folding angle of a flexible display device, which is applied to the flexible display device provided in any of the above embodiments, as shown in fig. 9, where fig. 9 is a flowchart of the method for detecting a folding angle of a flexible display device provided in an embodiment of the present invention, and the method includes:
s101: the light emitting member emits detection light;
s102: the rotating reflection component rotates around the rotating shaft according to a preset frequency and reflects the detection light in the rotating process;
s103: the light receiving part detects the detection light reflected by the rotating reflection part, obtains the optimal reflection angle of the rotating reflection part corresponding to the maximum light intensity value of the detection light according to the corresponding relation between the light intensity value of the detection light obtained by detection and the reflection angle of the rotating reflection part, and obtains the folding angle of the flexible display panel according to the corresponding relation between the optimal reflection angle and the folding angle of the flexible display panel;
wherein the correspondence between the optimum reflection angle and the folding angle of the flexible display panel is obtained from the positional relationship between the light receiving part and the rotating reflection part and the folding area.
Optionally, before the light emitting component emits the detection light, the method further includes:
judging whether the flexible display panel is in a display state or not;
if yes, controlling the light emitting component, the light receiving component and the rotating reflection component to be in working states, and detecting the folding angle;
if not, the light emitting component, the light receiving component and the rotating reflection component are controlled to be in the closed state.
In the embodiment of the present invention, after the light emitting section, the light receiving section, and the rotating reflecting section are controlled to be in the operating state, the light emitting section emits the detection light, and since the positional relationship between the light emitting section and the rotating reflecting section does not change with the change of the folding angle, when the rotating reflecting section rotates around the rotating shaft in the arrow direction at a predetermined frequency at any folding angle, that is, at any positional relationship between the rotating reflecting section and the light receiving section, the light intensity value detected by the light receiving section becomes the maximum value only when the rotating reflecting section rotates to the optimum reflecting angle.
Therefore, in any positional relationship, the rotating reflecting member is made to rotate around the rotating shaft in the direction of the arrow at a preset frequency, and the light receiving member is made to constantly detect the light intensity value of the detection light, whereby the relationship between the change in the light intensity value and the time can be obtained. Since the positional relationship between the light receiving part and the rotating reflection part and the folding area is predetermined and known, the correspondence between the optimum reflection angle of the rotating reflection part and the folding angle of the flexible display panel can be obtained based on this, and after the optimum reflection angle in any positional relationship is obtained, the folding angle of the flexible display panel can be obtained based on the correspondence between the optimum reflection angle and the folding angle of the flexible display panel.
Optionally, before the light emitting component emits the detection light, the method further includes:
the correspondence between the optimum reflection angle and the folding angle of the flexible display panel is obtained based on the positional relationship between the light receiving part and the rotating reflection part and the folding area.
That is, in the embodiment of the present invention, the correspondence relationship between the optimum reflection angle and the folding angle of the flexible display panel, such as the determination of θ being 180 ° to 4 α, may be obtained according to the positional relationship between the folding regions and the light receiving parts and the rotating reflection parts after the positional relationship between the light emitting parts, the rotating reflection parts, and the light receiving parts and the flexible display panel is set.
Then, the folding angle of the flexible display panel is controlled to change within the range of 0-180 degrees or 0-360 degrees, and then under each folding angle, after the corresponding relation between the light intensity value of the detection light and the reflection angle of the rotating reflection component is obtained through the light emitting component, the rotating reflection component and the light receiving component, the optimal reflection angle can be determined, and further the folding angle can be determined according to the corresponding relation between the optimal reflection angle and the folding angle of the flexible display panel.
Since the folding angle of the flexible display panel at any position relationship between the light receiving part and the rotating reflection part can be obtained in the embodiment of the present invention, the folding angle of the flexible display panel in any folding state can be detected, that is, the folding angle detection range and the detection accuracy of the flexible display device in the embodiment of the present invention are large.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. 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 invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A flexible display device, comprising:
a flexible display panel including a folding region and non-folding regions positioned at both sides of the folding region;
the folding device comprises a light emitting component and a rotating reflection component, wherein the light emitting component and the rotating reflection component are arranged on one side of a folding area, the light emitting component is used for emitting detection light, and the rotating reflection component is used for rotating around a rotating shaft according to a preset frequency and reflecting the detection light in the rotating process;
a light receiving part disposed at the other side of the folding region, a positional relationship of the light receiving part and the rotating reflection part being changed as a folding angle of the flexible display panel is changed;
the light receiving part is used for detecting the detection light reflected by the rotating reflection part, obtaining the optimal reflection angle of the rotating reflection part corresponding to the maximum light intensity value of the detection light according to the corresponding relation between the light intensity value of the detection light and the reflection angle of the rotating reflection part, and obtaining the folding angle of the flexible display panel according to the corresponding relation between the optimal reflection angle and the folding angle of the flexible display panel;
wherein the correspondence between the optimal reflection angle and the folding angle of the flexible display panel is obtained from the positional relationship between the light receiving part and the rotating reflection part and the folding area.
2. The flexible display device according to claim 1, wherein a distance from the light receiving member to the folding region is a first distance, a distance from the rotating reflection member to the folding region is a second distance, and the first distance is equal to the second distance, and a correspondence relationship between the optimal reflection angle obtained from a positional relationship between the light receiving member and the rotating reflection member and the flexible display panel is θ 180 ° -4 α;
where θ is the folding angle of the flexible display panel, and α is the optimal reflection angle.
3. The flexible display device according to claim 1 or 2, wherein the non-display side of the flexible display panel has a support structure;
the support structure having a first opening on one side of the fold region and a second opening on the other side of the fold region;
the rotating reflection part is positioned in the first opening, and the light receiving part is positioned in the second opening.
4. The flexible display device according to claim 1 or 2, wherein the flexible display panel comprises a first side edge and a second side edge which are oppositely arranged, and the first side edge and the second side edge are parallel to a folding axis of the folding area;
the light receiving part is arranged on a first side edge of the flexible display panel, and the rotating reflection part is arranged on a second side edge of the flexible display panel.
5. The flexible display device according to claim 1, wherein the rotating reflective member comprises a prism having a plurality of reflective surfaces, and the rotation axis is a central axis of the prism.
6. The flexible display device of claim 1, wherein the light emitting means comprises an infrared emitter; the light receiving part includes an infrared receiver.
7. The flexible display device according to claim 1, wherein the light receiving part comprises a first light receiving part and a second light receiving part, and the flexible display panel comprises a display side and a non-display side which are oppositely arranged;
a receiving surface of the first light receiving part faces the display side to obtain a folding angle of the display side of the flexible display panel from the detection light reflected by the rotating reflecting part;
the receiving surface of the second light receiving part faces the non-display side to obtain a folding angle of the non-display side of the flexible display panel from the detection light reflected by the rotating reflecting part.
8. A folding angle detection method of a flexible display device, applied to the flexible display device according to any one of claims 1 to 7, comprising:
the light emitting member emits detection light;
the rotating reflection component rotates around a rotating shaft according to a preset frequency and reflects the detection light in the rotating process;
the light receiving component detects the detection light reflected by the rotating reflection component, so as to obtain the optimal reflection angle of the rotating reflection component corresponding to the maximum light intensity value according to the maximum light intensity value of the detection light obtained by detection and the corresponding relation between the maximum light intensity value of the detection light and the reflection angle of the rotating reflection component, and obtain the folding angle of the flexible display panel according to the corresponding relation between the optimal reflection angle and the folding angle of the flexible display panel;
wherein the correspondence of the optimal reflection angle to the flexible display panel is obtained from a positional relationship of the light receiving part and the rotating reflection part.
9. The method of claim 8, wherein before the light emitting component emits the detection light, further comprising:
judging whether the flexible display panel is in a display state or not;
if yes, controlling the light emitting component, the light receiving component and the rotating reflection component to be in working states, and detecting the folding angle;
if not, the light emitting component, the light receiving component and the rotating reflection component are controlled to be in a closed state.
10. The method of claim 8, wherein before the light emitting component emits the detection light, further comprising:
the correspondence between the optimum reflection angle and the folding angle of the flexible display panel is obtained based on the positional relationship between the light receiving part and the rotating reflection part and the folding area.
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