CN107591427B - Flexible screen folding state detection device and method - Google Patents
Flexible screen folding state detection device and method Download PDFInfo
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- CN107591427B CN107591427B CN201710791035.5A CN201710791035A CN107591427B CN 107591427 B CN107591427 B CN 107591427B CN 201710791035 A CN201710791035 A CN 201710791035A CN 107591427 B CN107591427 B CN 107591427B
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- 230000009975 flexible effect Effects 0.000 title claims abstract description 132
- 238000001514 detection method Methods 0.000 title claims abstract description 92
- 238000000034 method Methods 0.000 title claims abstract description 10
- 238000005452 bending Methods 0.000 claims description 40
- 229920001621 AMOLED Polymers 0.000 description 8
- 238000010586 diagram Methods 0.000 description 6
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- 230000000875 corresponding effect Effects 0.000 description 5
- 239000002184 metal Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
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Abstract
The invention provides a device and a method for detecting the folding state of a flexible screen, wherein the device for detecting the folding state of the flexible screen comprises: a detection wire disposed at a predetermined fold of a display area of the flexible screen; the detection unit is electrically connected to two ends of the detection lead and used for detecting the resistance value of the detection lead when the flexible screen is folded and acquiring the folding angle of the flexible screen according to the detected resistance value; and the control unit is electrically connected with the detection unit and used for controlling the display state of the flexible screen according to the folding angle of the flexible screen provided by the detection unit. The invention sets the detection lead in the folding area of the flexible screen, obtains the folding angle of the flexible screen by detecting the resistance value of the detection lead, and correspondingly controls the display state according to different folding angles, so that the flexible screen can respond to different folding states, and the adopted detection lead has low cost and is easy to realize.
Description
Technical Field
The invention relates to the technical field of screen display, in particular to a device and a method for detecting the folding state of a flexible screen.
Background
With the development of display technology, the AMOLED (Active-matrix organic light emitting diode) display technology is gradually mature. Compared with LCD display, the LCD display has the advantages of high brightness, full color, high contrast, lower driving voltage, faster response time and the like. The AMOLED display screen also gradually comes into the market, and tends to replace the conventional LCD display. As a next generation display technology, AMOLED display has a good development prospect.
Because every pixel of AMOLED can both shine alone, consequently utilize AMOLED technique to make flexible screen more easily, and a plurality of vendors all realize the flexible display of AMOLED screen, flexible product will certainly rush into the market in the near future. As an excellent product, the flexible property of the AMOLED screen needs to be functionalized, i.e. different functions are realized when the flexible screen is folded.
Disclosure of Invention
The technical problem to be solved by the present invention is to provide a device and a method for detecting a folding state of a flexible screen, wherein the flexible screen responds to different folding states through the detected folding state of the flexible screen.
In order to solve the above technical problem, the present invention provides a flexible screen folding state detecting device, including:
a detection wire disposed at a predetermined fold of a display area of the flexible screen;
the detection unit is electrically connected to two ends of the detection lead and used for detecting the resistance value of the detection lead when the flexible screen is folded and acquiring the folding angle of the flexible screen according to the detected resistance value;
and the control unit is electrically connected with the detection unit and used for controlling the display state of the flexible screen according to the folding angle of the flexible screen provided by the detection unit.
The detection conducting wires wind the upper part or the lower part of the display area from the preset folding part at one side of the flexible screen to the preset folding part at the other side of the flexible screen to form a reverse U shape or an ㄩ shape and are respectively and electrically connected with the detection units.
The detection lead is arranged at a preset folding position on one side of the flexible screen, and two ends of the detection lead are electrically connected with the detection unit respectively.
When the flexible screen is folded, the detection wire is deformed or stretched due to bending, the resistance value of the detection wire is increased along with the increase of the folding angle of the flexible screen, and the folding angle of the flexible screen is an included angle between the end position after the flexible screen is folded and the initial position before the flexible screen is folded.
And a relation table is formed between the folding angle of the flexible screen and the resistance value of the detection lead.
Wherein the detection unit further comprises:
the detection module is used for detecting the resistance value of the detection lead when the flexible screen is folded;
and the query module is used for querying the relation table according to the detected resistance value to obtain the folding angle corresponding to the resistance value.
Wherein the detection wire is a single-strand metal wire or a multi-strand metal stranded wire.
The detection conducting wire is a flat strip and comprises a first conducting wire and a second conducting wire which are connected with each other, the first conducting wire comprises a first connecting portion, a first middle portion and a pair of first bending portions, the first connecting portion, the first middle portion and the pair of first bending portions are sequentially connected, the first bending portions vertically extend from the upper end and the lower end of the first middle portion and are parallel to each other, the second conducting wire comprises a second connecting portion, a second middle portion and a second bending portion, the second bending portions are sequentially connected, the second bending portions are vertically extended from the center of the second middle portion, the second bending portions are embedded between the pair of first bending portions and are abutted against the first middle portion, and the first bending portions are abutted against the.
Wherein the control unit is specifically configured to: and comparing the folding angle of the flexible screen provided by the detection unit with a preset judgment threshold value, and controlling the display state of the flexible screen according to the comparison result.
The invention also provides a method for detecting the folding state of the flexible screen, which comprises the following steps:
arranging a detection lead at a preset folding position of a display area of the flexible screen;
detecting the resistance value of the detection lead when the flexible screen is folded, and acquiring the folding angle of the flexible screen according to the detected resistance value;
and controlling the display state of the flexible screen according to the detected folding angle of the flexible screen.
The embodiment of the invention has the beneficial effects that: set up the detection wire in flexible screen folding region, through the detection to detecting the wire resistance, obtain the folding angle of flexible screen to according to the corresponding control display state of the folding angle of difference, not only make the flexible screen respond to different fold condition, the detection wire that adopts is with low costs moreover, easily realizes.
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 some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a flexible screen folding state detection device according to an embodiment of the present invention.
Fig. 2 is a schematic diagram of a flexible screen folding state detection device in a folding state according to an embodiment of the present invention.
Fig. 3 is a schematic diagram of a detection lead arrangement according to an embodiment of the invention.
Fig. 4 is another schematic diagram of a detection lead arrangement according to an embodiment of the invention.
Fig. 5 is a schematic view of a folding angle of a flexible screen according to an embodiment of the invention.
Fig. 6 is a schematic diagram illustrating a relationship between a folding angle of a flexible screen and a resistance of a detection lead according to an embodiment of the invention.
Fig. 7 is a schematic structural diagram of a detection lead according to an embodiment of the invention.
Fig. 8 is a schematic view of the sensing wire of fig. 7 in a bent state.
Fig. 9 is another schematic view of the sensing wire of fig. 7 in a bent state.
Fig. 10 is a schematic flow chart of a flexible screen folding state detection method according to a second embodiment of the present invention.
Detailed Description
The following description of the embodiments refers to the accompanying drawings, which are included to illustrate specific embodiments in which the invention may be practiced.
Referring to fig. 1 and fig. 2, an embodiment of a flexible screen folding state detecting device according to the present invention includes:
a detection wire 2 disposed at a predetermined fold of a display area 10 of the flexible screen 1;
the detection unit 3 is electrically connected to two ends of the detection lead 2, and is used for detecting the resistance value of the detection lead 2 when the flexible screen 1 is folded, and acquiring the folding angle of the flexible screen 1 according to the detected resistance value;
and the control unit 4 is electrically connected with the detection unit 3 and is used for controlling the display state of the flexible screen 1 according to the folding angle of the flexible screen 1 provided by the detection unit 3.
In the embodiment, the detection wires 2 are arranged at the preset folding position (see the area a shown in fig. 2) of the display area 10 of the flexible screen 1, when the flexible screen 1 is folded, the resistance value of the detection wires 2 is changed due to bending, and the detection unit 3 judges the folding angle of the flexible screen 1 by using the detected resistance value of the detection wires 2, and then feeds the folding angle back to the control unit 4 to perform corresponding actions, so that the flexible screen 1 responds to different folding states.
In this embodiment, the detecting wires 2 can be wound around the display region 10 from the predetermined folding position on one side of the flexible screen 1 to the predetermined folding position on the other side of the flexible screen 1 to form a shape of "n" or "ㄩ" as shown in fig. 3, and then are electrically connected to the detecting units 3 respectively; it is also possible to arrange only at a predetermined fold on one side of the flexible screen 1, as shown in fig. 4, with both ends electrically connected to the detecting unit 3, respectively. That is, the present embodiment does not limit the specific arrangement of the detection wire 2 as long as the resistance change at the time of folding can be reflected.
As previously described, when the flexible screen 1 is folded, according to the resistance formula:
where ρ represents the resistivity of the resistor and is determined by its properties, L represents the length of the resistor, and S represents the cross-sectional area of the resistor.
The detection wire 2 is deformed due to bending, which is equivalent to increase of L and decrease of S, and as a result, the resistance R of the detection wire 2 is increased, namely the resistance value of the detection wire 2 is increased along with the increase of the folding angle of the flexible screen 1.
The folding angle α of the flexible screen 1 is an angle between an end position after the flexible screen is folded and an initial position before the flexible screen is folded as shown in fig. 5, the initial position of the flexible screen 1 is a1, i.e., a horizontal direction, and when the flexible screens 1 to a2 are folded in a counterclockwise direction, an angle between a2 and a1 is a folding angle α of the flexible screen 1.
As described above, the relationship between the folding angle α of the flexible screen 1 and the resistance value R of the detection wire 2 as shown in fig. 6 can form a relationship table, and when the detection unit 3 detects the resistance value of the detection wire 2 during folding, the relationship table can be queried through the resistance value to obtain the folding angle α corresponding to the resistance value.
After obtaining the folding angle of the flexible screen 1, the control unit 4 will determine the current folding state of the flexible screen 1, and control the driving controller 5 (Driver IC) to make the flexible screen 1 present different display states, such as dim, bright, screen saver, extinguish, etc., according to the different folding states, specifically, a plurality of determination thresholds may be set for the folding angle, and the control unit 4 controls different display states of the flexible screen 1 according to the relationship between the obtained folding angle of the flexible screen and the respective determination thresholds, for example, set the first threshold to 160 °, if the folding angle α of the flexible screen 1 obtained by the detection unit 3 is greater than or equal to 160 °, indicating that the display area 10 of the flexible screen 1 is folded relatively to be closed, and no content needs to be displayed continuously, the control unit 4 will control the display area 10 of the flexible screen 1 to not display or display the screen saver, if the second threshold is set to 30 °, if the folding angle α ° of the flexible screen 1 obtained by the detection unit 3 is greater than or equal to 30 °, the soft screen 1 may be controlled to display the dim gradually.
Further, the detection lead 2 of the present embodiment may be a single-stranded metal lead or a multi-stranded metal stranded wire, and when the flexible screen 1 is folded, the flexible screen is deformed due to bending, so that the resistance value is changed. The detection wire 2 may also be designed in a structure as shown in fig. 7, considering that the change in resistance value caused by deformation is irreversible and sometimes causes wire loss.
Referring to fig. 7, the detection wire 2 is a flat strip and includes a first wire 21 and a second wire 22 connected to each other, the first wire 21 includes a first connecting portion 211, a first middle portion 212 and a pair of first bending portions 213 extending vertically from upper and lower ends of the first middle portion 212 and parallel to each other, the second wire 22 includes a second connecting portion 221, a second middle portion 222 and a second bending portion 223 extending vertically from a center of the second middle portion 222, the second bending portion 223 is embedded between the pair of first bending portions 213 and abuts against the first middle portion 212, and the first bending portions 213 abut against the second middle portion 222.
When the flexible screen 1 is folded, the detection wire 2 is bent at the areas where the first bending part 213 of the first wire 21 and the second bending part 223 of the second wire 22 are located, wherein the second bending part 223 is pulled out from between the first bending parts 213 (see fig. 8) to form a stretching length Δ l (see fig. 9), the folding angle α of the flexible screen 1 is increased, and the stretching length Δ l is increased accordingly, and the resistance value of the detection wire 2 is increased according to the resistance formula.
Correspondingly to the first embodiment of the present invention, the second embodiment of the present invention provides a method for detecting a folding state of a flexible screen, including:
arranging a detection lead at a preset folding position of a display area of the flexible screen;
detecting the resistance value of the detection lead when the flexible screen is folded, and acquiring the folding angle of the flexible screen according to the detected resistance value;
and controlling the display state of the flexible screen according to the detected folding angle of the flexible screen.
The working principle and process of this embodiment can be referred to the description of the first embodiment of the present invention, and are not described herein again.
As can be seen from the above description, the embodiments of the present invention have the following beneficial effects: set up the detection wire in flexible screen folding region, through the detection to detecting the wire resistance, obtain the folding angle of flexible screen to according to the corresponding control display state of the folding angle of difference, not only make the flexible screen respond to different fold condition, the detection wire that adopts is with low costs moreover, easily realizes.
The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention, and it is therefore to be understood that the invention is not limited by the scope of the appended claims.
Claims (8)
1. A flexible screen folding condition detecting device, comprising:
a detection wire disposed at a predetermined fold of a display area of the flexible screen;
the detection unit is electrically connected to two ends of the detection wire and used for detecting the resistance value of the detection wire when the flexible screen is folded and acquiring the folding angle of the flexible screen according to the detected resistance value, when the flexible screen is folded, the detection wire is deformed due to bending or stretched due to bending, the resistance value of the detection wire is increased along with the increase of the folding angle of the flexible screen, and the folding angle of the flexible screen is an included angle between the end position of the flexible screen after being folded and the initial position of the flexible screen before being folded;
the control unit is electrically connected with the detection unit and used for controlling the display state of the flexible screen according to the folding angle of the flexible screen provided by the detection unit;
the detection wire is a flat strip and comprises a first wire and a second wire which are connected, the first wire comprises a first connecting portion, a first middle portion and a pair of first bending portions, the first connecting portion, the first middle portion and the pair of first bending portions are sequentially connected, the first bending portions vertically extend from the upper end to the lower end of the first middle portion and are parallel to each other, the second wire comprises a second connecting portion, a second middle portion and a second bending portion, the second bending portions are sequentially connected, the second bending portions are vertically extended from the center of the second middle portion, the second bending portions are embedded between the pair of first bending portions and are abutted to the first middle portion, and the first bending portions are abutted to the second middle portion respectively.
2. The device for detecting the folded state of a flexible screen according to claim 1, wherein the detection wires are formed in a shape of "n" or "ㄩ" from the predetermined folding position on one side of the flexible screen to the predetermined folding position on the other side of the flexible screen around the display area from the upper or lower side, and are electrically connected to the detection units, respectively.
3. The flexible screen folded state detecting device of claim 1, wherein the detecting wire is provided at a predetermined folding position at one side of the flexible screen, and both ends are electrically connected to the detecting unit, respectively.
4. The flexible screen folding state detecting device according to claim 1, wherein a relation table is formed between a folding angle of the flexible screen and a resistance value of the detecting wire.
5. The flexible screen folded state detecting device according to claim 4, wherein the detecting unit further comprises:
the detection module is used for detecting the resistance value of the detection lead when the flexible screen is folded;
and the query module is used for querying the relation table according to the detected resistance value to obtain the folding angle corresponding to the resistance value.
6. The flexible screen fold condition detecting device according to claim 1, wherein the detecting wire is a single wire or a stranded wire.
7. The flexible screen folding state detection device of claim 1, wherein the control unit is specifically configured to: and comparing the folding angle of the flexible screen provided by the detection unit with a preset judgment threshold value, and controlling the display state of the flexible screen according to the comparison result.
8. A method for detecting the folding state of a flexible screen is characterized by comprising the following steps:
arranging a detection lead at a preset folding position of a display area of the flexible screen, wherein the detection lead is a flat strip and comprises a first lead and a second lead which are connected, the first lead comprises a first connecting part, a first middle part and a pair of first bending parts which vertically extend from the upper end and the lower end of the first middle part respectively and are parallel to each other, the second lead comprises a second connecting part, a second middle part and a second bending part which vertically extends from the center of the second middle part, the second bending part is embedded between the pair of first bending parts and is abutted against the first middle part, and the first bending parts are abutted against the second middle part respectively;
detecting the resistance value of the detection lead when the flexible screen is folded, and acquiring the folding angle of the flexible screen according to the detected resistance value, wherein when the flexible screen is folded, the detection lead is deformed due to bending or stretched due to bending, the resistance value of the detection lead is increased along with the increase of the folding angle of the flexible screen, and the folding angle of the flexible screen is an included angle between the end position of the flexible screen after being folded and the initial position of the flexible screen before being folded;
and controlling the display state of the flexible screen according to the detected folding angle of the flexible screen.
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| CN201710791035.5A CN107591427B (en) | 2017-09-05 | 2017-09-05 | Flexible screen folding state detection device and method |
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| CN201710791035.5A CN107591427B (en) | 2017-09-05 | 2017-09-05 | Flexible screen folding state detection device and method |
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| CN107591427B true CN107591427B (en) | 2020-04-28 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108320669A (en) * | 2018-01-29 | 2018-07-24 | 昆山国显光电有限公司 | Flexible Displays module and preparation method thereof |
| CN109714813A (en) * | 2019-01-08 | 2019-05-03 | 京东方科技集团股份有限公司 | Electronic equipment |
| CN109637417B (en) * | 2019-01-08 | 2021-08-03 | 上海天马有机发光显示技术有限公司 | Display panel, driving method thereof and display device |
| CN109992189B (en) * | 2019-02-22 | 2021-05-11 | 华为技术有限公司 | Screen control method, electronic device and storage medium |
| CN111694455A (en) * | 2019-03-15 | 2020-09-22 | 陕西坤同半导体科技有限公司 | Display panel and display device thereof |
| CN110307821A (en) * | 2019-07-01 | 2019-10-08 | 三星电子（中国）研发中心 | A kind of angle measurement method and mobile terminal |
| TWI742519B (en) * | 2019-07-26 | 2021-10-11 | 友達光電股份有限公司 | Flexible display device and manufacturing method thereof |
| CN111508358A (en) * | 2020-04-26 | 2020-08-07 | 武汉华星光电半导体显示技术有限公司 | Display device |
| CN111722754A (en) * | 2020-06-19 | 2020-09-29 | 京东方科技集团股份有限公司 | A display panel, its detection method and display device |
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