CN110379336B - Display device and display method thereof - Google Patents
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- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/005—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes forming an image using a quickly moving array of imaging elements, causing the human eye to perceive an image which has a larger resolution than the array, e.g. an image on a cylinder formed by a rotating line of LEDs parallel to the axis of rotation
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Abstract
The invention provides a display device and a display method thereof, and belongs to the technical field of display. The invention provides a display device, which comprises a display substrate with a fan-shaped display area and a rotating unit, wherein the display substrate comprises a base and a plurality of light-emitting devices positioned on the base; wherein the plurality of light emitting devices are arranged in the fan-shaped display area and arranged in a plurality of rows along a bending direction of an arc of the fan-shaped display area; and the number of each row of light-emitting devices is gradually increased along the direction that the top point of the fan-shaped display area points to the arc; the rotating unit is connected to the position of the substrate corresponding to the top point of the fan-shaped display area and used for controlling the substrate to rotate so as to drive the plurality of light-emitting devices to rotate. According to the invention, the number of the light-emitting devices is gradually increased along the direction of the pointing arc of the top point of the fan-shaped display area, so that when the substrate rotates and drives the plurality of light-emitting devices to rotate to display a picture, the resolution of each position of the displayed picture can be the same, the uniformity of the picture is improved, and the display quality is further improved.
Description
Technical Field
The invention belongs to the technical field of display, and particularly relates to a display device and a display method thereof.
Background
When people observe something, the light signal is transmitted into the brain nerve through human eyes, and acts on the retina to generate a visual picture. However, after the light ceases to act, the visual image will remain in the human brain for a period of time. We refer to this phenomenon as Visual persistence phenomenon (Visual persistence phenomenon).
The persistence of vision is often applied to rotating display devices. In the prior art, as shown in fig. 1, a rotary display device based on the persistence of vision generally includes: a light strip 11, a motor 12 and a control unit 13. At least one row of Light Emitting Diodes (LEDs) 111 is disposed on the Light strip, and the number of LEDs 111 in each row is equal; the motor 12 is connected with the lamp strip 11 and used for driving the lamp strip 11 to rotate; the control unit 13 is connected to the light emitting diodes 111 on the light strip 11, and is configured to control the light emitting diodes 111 on the light strip 11 to refresh and light according to a preset program when the light strip 11 rotates. When the light strip 11 rotates, if the refresh frequency of the light emitting diode 111 is greater than 10Hz, the phenomenon of persistence of vision can be generated. The control unit 13 controls the light emitting diodes 111 on the light strip 11 to refresh and light according to a preset program during rotation, and by using a visual persistence phenomenon, pictures displayed by the light emitting diodes 111 at different rotation angles can be combined to form a complete frame of display picture on the rotation surface of the light strip 11.
The inventor finds that at least the following problems exist in the prior art: as shown in fig. 2, when the motor 13 drives the light strip 11 to rotate, the light emitting diode 111 disposed on the light strip 11 makes a circular motion along with the light strip 11 using a connection position of the motor 12 and the light strip 11 as a center C. Under the same rotation angle, the distance of the circle moved by the led 111 far from the center C (for example, the leds E1 to E1') is longer than the distance of the circle moved by the led 111 near the center C (for example, the leds E3 to E3') and under the same rotation angle (for example, the rotation angle θ), that is, the same rotation time, the number of times of refreshing the led 111 far from the center C and the led 111 near the center C is the same, and due to this difference, the display effect is worse, the farther the pixels from the center C are in the display image formed by the rotation of the light strip 11, visually, the worse the display image is uneven, and the display quality is reduced.
Disclosure of Invention
The present invention is directed to at least one of the technical problems in the prior art, and provides a display device, which can make the resolution of each position of the displayed image the same when the substrate rotates and drives the light emitting devices to rotate to display the image, so as to improve the uniformity of the image and further improve the display quality.
The technical scheme adopted for solving the technical problem of the invention is a display device, which comprises:
a display substrate having a sector display area, the display substrate comprising: a substrate on which a plurality of light emitting devices are positioned; wherein,
the plurality of light emitting devices are arranged in the fan-shaped display area and are arranged in a plurality of rows along the bending direction of the arc of the fan-shaped display area; and the number of the light emitting devices in each row is gradually increased along the direction that the top point of the fan-shaped display area points to the arc;
and the rotating unit is connected to the position of the substrate corresponding to the top point of the fan-shaped display area and is used for controlling the substrate to rotate so as to drive the plurality of light-emitting devices to rotate.
According to the display device provided by the invention, the plurality of rows of light-emitting devices are arranged on the substrate with the fan-shaped display area along the bending direction of the arc of the fan-shaped display area, and the number of the light-emitting devices in each row is gradually increased along the direction that the vertex of the fan-shaped display area points to the arc, so that when the substrate rotates and drives the plurality of light-emitting devices to rotate to display a picture, the resolution of each position of the displayed picture can be the same, the uniformity of the picture is improved, and the display quality is further improved.
Preferably, in the display device provided by the invention, the distance between any two adjacent rows of the light emitting devices is the same;
in any row of the light emitting devices, the distance between any two adjacent light emitting devices is the same.
Preferably, in the display apparatus provided by the present invention, each row of the light emitting devices and the vertex of the fan-shaped display area define a sub-display area; the radius of each sub display area is increased in a multiple manner along the direction of the arc pointed by the vertex of the fan-shaped display area;
and the number of the light-emitting devices in each row is multiplied and increased in a direction that the vertex of the fan-shaped display area points to the arc, and the increasing multiples of the number of the light-emitting devices in each row are in one-to-one correspondence with the increasing multiples of the radius of each sub-display area.
Preferably, in the display device provided by the present invention, the display substrate includes N fan-shaped display areas, each fan-shaped display area is provided with the plurality of light emitting devices, and the N fan-shaped display areas share a vertex;
wherein N is an integer greater than 1.
Preferably, in the display device provided by the present invention, the display substrate includes 2 fan-shaped display areas, and the 2 display areas are arranged in a central symmetry manner.
Preferably, the display device according to the present invention further includes:
and the control unit is connected with the light-emitting device and used for controlling the light-emitting device to display a picture corresponding to the rotation information according to the rotation information of the preset rotation unit when the substrate rotates.
Preferably, in the above display apparatus provided by the present invention, the light emitting device includes a light emitting diode.
Preferably, in the display device provided by the present invention, the rotating unit includes a stepping motor.
Accordingly, the present invention provides a display method of the display device, including the steps of:
acquiring a first image to be displayed;
dividing the first image into a plurality of fan-shaped second images by taking the center of the first image as a vertex, and recording phase information of each second image so that the phase information corresponds to rotation information of the rotating unit;
and acquiring image information of corresponding positions in each second image according to the positions of the light-emitting devices arranged in the fan-shaped display area, and generating pictures to be displayed by the light-emitting devices in each phase according to the image information so as to obtain the pictures correspondingly displayed by the light-emitting devices under each piece of rotation information.
Preferably, in the method provided by the present invention, the dividing the first image into the second images of the plurality of sectors specifically includes: dividing the first image into a number of second images equal to the number of refreshes according to the number of refreshes of the light emitting device within a rotation angle required to display the first image as the substrate rotates.
Drawings
FIG. 1 is a schematic diagram of a display device utilizing persistence of vision in the prior art;
FIG. 2 is a schematic diagram of the circumferential path of LEDs at different positions in a display device using persistence of vision in the prior art;
FIG. 3 is a schematic structural diagram of a display device according to an embodiment of the present invention;
FIG. 4 is a second schematic structural diagram of a display device according to an embodiment of the present invention
FIG. 5 is a schematic structural diagram of another embodiment of a display device according to the present invention;
fig. 6 is a schematic flow chart illustrating a display method of the display device according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, and it is obvious that the described embodiments are only some embodiments of the present invention, 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 shapes and sizes of the various elements in the drawings are not to scale and are merely intended to illustrate the invention.
As shown in fig. 3, the present embodiment provides a display device including: a display substrate and a rotation unit 1.
Specifically, the display substrate includes a base 21 and a plurality of light emitting devices 22 on the base 21, and the display substrate has a fan-shaped display area 23 thereon. Wherein, a plurality of light emitting devices 22 are disposed in the fan-shaped display area 23 and are disposed in a plurality of rows along a curved direction of an arc of the fan-shaped display area 23; and the number of the light emitting devices 22 in each row is gradually increased in a direction in which the vertex C of the fan-shaped display area 23 points to an arc (a direction indicated by a dotted arrow in fig. 3).
It should be noted that the sector may be regarded as a part of a circle, and is defined by a central angle of the circle corresponding to the sector and a circumference corresponding to the central angle, an arc of the sector is a partial circumference of the circle corresponding to the central angle, a bending direction of the arc of the sector is a circumferential direction of the circumference corresponding to the central angle of the sector, and a bending direction of the arc of the sector display area in the present embodiment is hereinafter simply referred to as an arc direction.
The rotating unit 1 is connected to the substrate 21 at a position corresponding to the vertex C of the fan-shaped display area 23, and the rotating unit 1 is used for controlling the substrate 21 to rotate so as to drive the plurality of light emitting devices 22 arranged on the substrate 21 to rotate.
In the display apparatus provided in the present embodiment, since the plurality of rows of light-emitting devices 22 are disposed on the substrate 21 having the fan-shaped display area 23 along the curved direction of the arc of the fan-shaped display area, and the number of the light-emitting devices 22 in each row is gradually increased along the direction in which the vertex C of the fan-shaped display area 23 points to the arc, when the rotating unit 1 drives the substrate 21 to rotate to drive the plurality of light-emitting devices 22 to rotate for displaying a picture, the number of the light-emitting devices 22 in the upward direction of the arc farther from the vertex C is larger, for example, in fig. 3, the number of the light-emitting devices 22 (5 light-emitting devices) disposed in the upward direction of the arc having a distance L1 from the vertex C is larger than the number of the light-emitting devices 22 (3 light-emitting devices) disposed in the upward direction of the arc having a distance L2 from the vertex C, so that the number of the light-emitting devices 22 in the circumference at the farther from the center of the picture (i.e., the vertex C of the fan-shaped display area) is larger, accordingly, the resolution of each position of the displayed picture can be the same, and therefore, in the display device (as shown in fig. 1) having a rectangular display area, the resolution of the part of the picture that is farther from the center of the picture is lower in the picture displayed by the rotation of the light emitting device due to the fact that the circular distance along which the light emitting device 22 moves is longer at the same rotation angle (as the circular distance from E1 to E1 'is greater than the circular distance from E3 to E3' at the same rotation angle in fig. 2), which can be effectively avoided, and the uniformity and the display quality of the picture can be improved.
Alternatively, in the display apparatus provided in the present embodiment, the Light Emitting device 22 may be a Light Emitting Diode (LED), and the Light Emitting device may be any type of LED, such as a miniaturized LED (Micro LED), a submillimeter LED (Mini LED), or the like. The type of the light emitting device 22 can be selected according to the requirement in specific applications, and is not limited herein.
Alternatively, in the display device provided in the present embodiment, the rotating unit 1 may be a stepping motor, and of course, the rotating unit 1 may also be another type of motor as long as the substrate 21 can be controlled to rotate, which is not limited herein.
Alternatively, as shown in fig. 3, in the plurality of rows of light emitting devices 22 arranged along the arc direction of the fan-shaped display area 23, the pitch H between any two adjacent rows of light emitting devices 22 is the same, and the pitch D between any two adjacent rows of light emitting devices 22 is the same in any one row of light emitting devices 22. By arranging the rows of light emitting devices 22 in the fan-shaped display area 23 at the same pitch H and making the pitches D between the adjacent light emitting devices 22 in each row of light emitting devices 22 equal, the light emitting devices 22 can be arranged more uniformly in the fan-shaped display area 23.
Further, as shown in fig. 4, for convenience of explanation, it is assumed that m rows of light emitting devices are disposed in the fan-shaped display area, and the 1 st to m-th rows of light emitting devices are respectively denoted by L1，L2……LmAnd m is an integer greater than 1. In rows arranged along the arc of the fan-shaped display area1-LmIn the display device, a sub-display area is defined by each row of light emitting devices and the vertex of the fan-shaped display area, and the sub-display areas defined by the 1 st to mth rows of light emitting devices and the vertex of the fan-shaped display area are respectively marked as A1，A2……AmEach of the sub display regions A1-AmThe radii of (A) are sequentially denoted as R1，R2……RmAnd each sub-display area A1-AmThe central angles omega are the same; radius R of each sub-display area along the direction of arc pointing from the vertex of the sector display area1-RmMultiplying and increasing gradually; the rows of light-emitting devices L are directed along the arc from the apex of the fan-shaped display area1-LmIs multiplied by the number of the light emitting devices of each row, and each of the sub-display areas a1-AmRadius R of1-RmThe incremental multiples of (a) are in one-to-one correspondence.
From the sector arc length formula
It can be known that the ratio of the arc lengths of any two sub-display areas is equal to the ratio of the radii of the two sub-display areas, where l is the arc length of the sector, ω is the central angle of the sector, each sub-display area in this embodiment is concentric with the central angle, and R is the radius of the sector, that is, the radius of the sub-display area in this embodiment. For example, if the first sub-display area A1Has a radius of R1Arc length of l1(ii) a M sub-display area AmHas a radius of RmArc length of lmThen the first sub-display area A1Arc length l of1And the m-th sub-display area AmArc length l ofmRatio of
Specifically, referring to fig. 4, in the present embodiment providing the above-described display device, the first sub-display area a1By the first row of light-emitting devices L nearest the apex1Is defined with the vertex to form a first sub-display area A1Radius R of1As unit radius, in the first display area A1Arc length l of1Is in units of arc length. The radius R of each sub-display area along the direction of the arc pointed by the vertex of the fan-shaped display area1-RmMultiple increments, i.e. radius R of sub-display areas 2-m2-RmIs 2+ j-m + j times of unit radius, and is in the same circle centerAt the angle, the arc length ratio of different sub-display regions is equal to the radius ratio, therefore, if the radius R of the 2 nd to m th sub-display regions2-Rm2+ j-m + j times of unit radius, the arc length l of the 2 nd to mth sub-display areas2-lmIs 2+ j-m + j times of unit arc length, wherein j is an integer greater than or equal to 0.
Specifically, as shown in fig. 4, as can be seen from the above, the display apparatus of the present embodiment is provided such that the rows of light emitting devices L are directed in the direction of an arc along the apex of the fan-shaped display area1-LmIs multiplied by a multiple, and each row of light emitting devices L1-LmWith increasing multiples of the number of (2) and the respective sub-display areas A1-AmRadius R of1-RmIn a one-to-one correspondence, i.e. with the first row of light-emitting devices L1The number of the middle light emitting devices is a unit number, and in the 2-m rows of light emitting devices, the ratio (i.e. increasing multiple) of the number of the light emitting devices in each row to the unit number is equal to the ratio (i.e. increasing multiple) of the radius of the sub-display area corresponding to the row of the light emitting devices to the unit radius. For example, if j is 1, the row 2 light emitting device L2The corresponding 2 nd sub-display area A2Radius of (l)2Is 3 times the unit radius, and accordingly, the 2 nd row light emitting device L2Is a unit number (i.e., the 1 st row of light emitting devices L)1Number of (d) 3 times. By analogy, the m-th row of light emitting devices LmCorresponding mth sub-display area AmRadius of (l)mIs m +1 times the unit radius, and accordingly, the m-th row of light emitting devices LmThe number of (2) is m +1 times the unit number. And the distance H between any two adjacent rows of light emitting devices is j times of the unit radius, so that the difference between the arc lengths of any two adjacent rows of light emitting devices is consistent, for example, in fig. 4, the difference between the arc lengths of any two adjacent rows of light emitting devices is the unit arc length l1And in any row of light-emitting devices, the distance D between any two adjacent light-emitting devices is the same, so that the number of the light-emitting devices corresponding to the unit arc length of the sub-display area in the sub-display area corresponding to any row of light-emitting devices is the same.
In summary, in the display apparatus provided in the present embodiment, the light emitting devices 22 are arranged in the fan-shaped display area 23 in the above manner, so that the more light emitting devices 22 are arranged in the upward direction of the arc farther from the vertex C, and the increased number corresponds to the distance from the vertex C, when the substrate 21 is driven by the rotating unit 1 to rotate the plurality of light emitting devices 22 to display the image, the more light emitting devices 22 are arranged in the upward direction of the arc farther from the vertex C, and thus the more light emitting devices 22 are arranged in the circumference farther from the center of the image (i.e. the vertex C of the fan-shaped display area), i.e. the larger circumference of the circumference, so that the resolution of each position of the displayed image can be the same, and therefore, in the display apparatus (as shown in fig. 1) with a rectangular display area, the longer circumference distance of the light emitting devices farther from the vertex (as the circumference distance from E1 to E1' of the same rotation angle in fig. 2) can be effectively avoided Greater than the circumferential distance from E3 to E3'), which results in lower resolution of portions of the picture displayed by the rotation of the light emitting device that are farther from the center of the picture, thereby enabling improvement in the uniformity and display quality of the picture.
Optionally, in the display device provided in this embodiment, the display substrate may include 1 fan-shaped display area 23, or may include N fan-shaped display areas 23, where each fan-shaped display area 23 is provided with a plurality of light emitting devices 22, and the N fan-shaped display areas share a vertex; wherein N is an integer greater than 1.
Specifically, if the display device includes a sector display area, the rotation unit controls the substrate to rotate 360 ° to display a complete frame. If the display device comprises N fan-shaped display areas, the display of a complete frame of picture needs to be determined according to the number of the fan-shaped display areas and the angle between each fan-shaped display area and the adjacent fan-shaped display area, and the rotation unit needs to control the rotation angle value of the substrate. The angles between any two adjacent fan-shaped display areas in the plurality of fan-shaped display areas may be the same or different, and specifically, the angles are designed according to needs, and are not limited herein. Preferably, when there are a plurality of fan-shaped display areas, the plurality of fan-shaped display areas are uniformly arranged with the vertex as the center of the circle.
In addition, in the display device provided in this embodiment, if the display device has a plurality of fan-shaped display areas, the number of the substrates may be one or more, and the shape of the substrate is not limited in this embodiment. Specifically, the plurality of fan-shaped display areas may be disposed on a substrate, the substrate may be a circular substrate having a center the same as that of the fan-shaped display areas, and the radius of the substrate is greater than that of the fan-shaped display areas; the same number of substrates may also be arranged according to the number of the fan-shaped display areas, that is, the fan-shaped display areas and the substrates are arranged in a one-to-one correspondence, which is not limited herein.
For example, as shown in fig. 5, optionally, in the above display device provided in this embodiment, the display substrate includes 2 fan-shaped display areas 23, the 2 fan-shaped display areas 23 share a vertex C, and the 2 fan-shaped display areas 23 may be arranged in central symmetry. In this way, according to the picture to be displayed, corresponding display data is input to each light emitting device 22, and a complete picture can be displayed by controlling the substrate 21 to rotate 180 ° through the rotating unit 1. Moreover, by arranging the 2 fan-shaped display areas 23 in a central symmetry manner, the rotation force of the rotation unit 1 for controlling the rotation of the substrate 21 can be stabilized, and the stability of the display device during rotation display can be improved.
Optionally, the display device provided in this embodiment further includes: a control unit. The control unit is connected to the light emitting device 22, and is configured to control the light emitting device 22 to display a picture corresponding to the rotation information according to preset rotation information of the rotation unit 1 when the rotation unit 1 controls the substrate 21 to rotate. The angle of rotation of the substrate 21 per unit time can be known from the formula ω 2 pi n of the rotation speed and the angular speed of the rotating unit 1, where ω is the angle of rotation of the substrate 21 per unit time and n is the rotation speed of the rotating unit 1. The rotation speed information of the rotation unit 1 is preset in the control unit, the control unit can calculate the rotation information of the substrate 21 according to the rotation time length of the substrate 21, that is, the rotation angle of the substrate 21 in the rotation time length, so as to obtain the rotation angle of the light emitting device 22 in the fan-shaped display area 23, and then the control unit controls the light emitting device 22 to display the picture corresponding to the rotation information according to the rotation information, that is, the light emitting device 22 is controlled to display the corresponding picture at the rotation angle according to the rotation angle of the light emitting device 22, and after one rotation, the picture correspondingly displayed by the light emitting device 22 at a plurality of rotation angles is combined into a complete picture by using the phenomenon of visual persistence.
Alternatively, the control unit may be connected to the rotation unit 1, and the control unit may control the rotation unit 1 to rotate at a desired rotation speed according to the display requirement, and set the rotation speed as the rotation speed information of the rotation unit 1.
Alternatively, in the above-described display apparatus provided in the present embodiment, the picture to be displayed by the light-emitting device 22 is generally acquired by the control unit. The control unit may be connected to an upper computer, which sends data of the picture to be displayed by the light emitting device 22 to the control unit. Alternatively, the display apparatus provided in this embodiment may further include a transmission module, such as a WIFI module or a bluetooth module, and the data of the picture to be displayed by the light emitting device 22 may also be sent to the control unit through the transmission module. Of course, the data of the picture to be displayed by the light emitting device 22 may be input into the control unit by other manners as long as the principle of the display device provided in this embodiment is met, and the present invention is not limited thereto.
Correspondingly, as shown in fig. 6, the present embodiment further provides a display method of the display device, including the following steps:
s101, acquiring a first image needing to be displayed.
Specifically, the display data can be input into the control unit through the transmission unit or the upper computer, and the first image to be displayed is also acquired.
S201 divides the first image into a plurality of fan-shaped second images with the center of the first image as a vertex, and records phase information of each second image so that the phase information corresponds to the rotation information of the rotation unit. When the light emitting device is rotated to display a picture, the control unit may obtain the second image of the corresponding position in the first image at the rotation angle according to the rotation information, that is, the rotation angle of the light emitting device, so as to obtain the picture correspondingly displayed by the light emitting device at the rotation angle.
Specifically, the control unit may divide the first image into a plurality of second images, and record the phase information of each of the second images in the control unit, and then the control unit calculates the correspondence between the phase information of each of the second images and the rotation information preset in the control unit.
S301, acquiring image information of corresponding positions in each second image according to the positions of each light-emitting device arranged in the fan-shaped display area, and generating pictures to be displayed by the light-emitting devices in each phase according to the image information to obtain the pictures correspondingly displayed by the light-emitting devices under each rotation information, wherein the image information can be gray-scale values and color values of the light-emitting devices under the corresponding rotation information; wherein the central angles of the second images of the respective sectors are equal.
Specifically, the control unit may calculate a picture correspondingly displayed by the light emitting device under each rotation information.
Note that, the above steps are generally performed by the control unit in the display device.
Optionally, in the method provided in this embodiment, the dividing, in step S2, the first image into a plurality of fan-shaped second images specifically includes: the first image is divided into a number of second images equal to the number of refreshes according to the number of refreshes of the light emitting device within a rotation angle required to display the first image as the substrate rotates, and phase information of each of the second images is recorded, respectively. For example, if the rotation speed n of the rotating unit is 20r/s, that is, the rotating unit rotates 20 cycles in 1 second, the refresh frequency of the light emitting device is 7200Hz, that is, the light emitting device is refreshed 7200 times in 1 second, and the number of times the light emitting device is refreshed in one rotation of the rotating unit, that is, one rotation of the substrate is 360 times. If the display device includes a sector display area, the substrate rotates a circle (360 °) to display the first image, and the light emitting devices in the sector display area refresh 360 times within the rotation of the substrate, so that the first image can be divided into 360 second images, the central angle of each second image is 1 °, when the substrate rotates to drive the light emitting devices to rotate, the light emitting devices display one second image every time the light emitting devices refresh, and when the substrate rotates a circle, that is, the light emitting devices rotate 360 °, the 360 second images are displayed, and the 360 second images are synthesized into the complete first image by using the persistence of vision. Correspondingly, if the display device includes 2 fan-shaped display areas, and the 2 fan-shaped display areas are arranged in a central symmetry manner, the substrate rotates 180 degrees to display the first image, the light emitting devices in the fan-shaped display areas are refreshed 180 times when the substrate rotates 180 degrees, the first image can be divided into 360 second images, the central angle of each second image is 1 degree, every two second images with central symmetry are taken as one group, that is, the second images are divided into 180 groups, when the substrate rotates to drive the light emitting devices to rotate, the light emitting devices display two second images with central symmetry once when the light emitting devices refresh, when the substrate rotates 180 degrees, that is, the light emitting devices rotate 180 degrees, the 180 groups of second images are displayed, and the 180 groups of second images are synthesized into a complete first image by using the phenomenon of visual persistence.
Optionally, in the method provided in this embodiment, step S3 specifically includes:
and marking the identification numbers of the light-emitting devices in the fan-shaped display area as A1 and A2 … … An, and generating a relation table of the light-emitting devices and the image information according to the image information of the corresponding positions of the light-emitting devices in the second images and the phase information of the second images:
| ω1 | ω2 | …… | ωn | |
| A1 | c11 | c12 | …… | c1n |
| A2 | c21 | c22 | …… | c2n |
| A3 | c31 | c32 | …… | c3n |
| …… | …… | …… | …… | …… |
| An | cn1 | cn2 | …… | cnn |
TABLE 1
In table 1, a1-An are identification numbers of the respective light emitting devices, ω 1- ω n are phase information of the respective second images, and c11-cnn are image information of the respective light emitting devices in the second images corresponding to the respective phase information. And storing the relation table into a control unit, when the rotation unit controls the substrate to rotate so as to drive the light-emitting devices arranged on the substrate to rotate, the control unit obtains corresponding phase information according to preset rotation information, searches image information in the second image corresponding to each light-emitting device in the relation table under the phase information, and controls each light-emitting device to display according to the searched image information so that each light-emitting device displays the image corresponding to the rotation information under the corresponding rotation information. Of course, the control unit may determine the corresponding displayed frame of the light emitting device under each rotation information according to other manners as long as the principle of the display method provided in this embodiment is met, which is not limited herein.
In summary, in the display device provided by the present invention, the plurality of rows of light emitting devices are disposed on the substrate having the fan-shaped display area along the curved direction of the arc of the fan-shaped display area, and the number of the light emitting devices in each row is gradually increased along the direction in which the vertex of the fan-shaped display area points to the arc, so that when the substrate rotates and drives the plurality of light emitting devices to rotate to display a picture, the resolutions of each position of the picture displayed by the display device can be the same, so as to improve the uniformity of the picture, and further improve the display quality.
It will be understood that the above embodiments are merely exemplary embodiments taken to illustrate the principles of the present invention, which is not limited thereto. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit and substance of the invention, and these modifications and improvements are also considered to be within the scope of the invention.
Claims (10)
1. A display device, comprising:
a display substrate having a sector display area, the display substrate comprising: a substrate on which a plurality of light emitting devices are positioned; wherein,
the plurality of light emitting devices are arranged in the fan-shaped display area and are arranged in a plurality of rows along the bending direction of the arc of the fan-shaped display area; the number of the light-emitting devices in each row is gradually increased along the direction that the top point of the fan-shaped display area points to the arc;
the display device further includes: and the rotating unit is connected to the position of the substrate corresponding to the top point of the fan-shaped display area and is used for controlling the substrate to rotate so as to drive the plurality of light-emitting devices to rotate.
2. The display device according to claim 1,
the distance between any two adjacent rows of the light-emitting devices is the same;
in any row of the light emitting devices, the distance between any two adjacent light emitting devices is the same.
3. The display device according to claim 2,
each row of the light-emitting devices and the vertex of the fan-shaped display area define a sub-display area; the radius of each sub display area is increased in a multiple manner along the direction of the arc pointed by the vertex of the fan-shaped display area;
and the number of the light-emitting devices in each row is multiplied and increased in a direction that the vertex of the fan-shaped display area points to the arc, and the increasing multiples of the number of the light-emitting devices in each row are in one-to-one correspondence with the increasing multiples of the radius of each sub-display area.
4. The display device according to claim 1, wherein the display substrate includes N of the fan-shaped display regions, each of the fan-shaped display regions having the plurality of light emitting devices disposed thereon, and the N of the fan-shaped display regions share a vertex;
wherein N is an integer greater than 1.
5. The display device according to claim 4, wherein the display substrate comprises 2 fan-shaped display areas, and the 2 fan-shaped display areas are arranged in a central symmetry manner.
6. The display device according to claim 1, further comprising:
and the control unit is connected with the light-emitting device and used for controlling the light-emitting device to display a picture corresponding to the rotation information according to the rotation information of the preset rotation unit when the substrate rotates.
7. The display device according to claim 1, wherein the light-emitting device comprises a light-emitting diode.
8. The display device according to claim 1, wherein the rotation unit comprises a stepping motor.
9. A display method of a display device according to claim 1, characterized by comprising the steps of:
acquiring a first image to be displayed;
dividing the first image into a plurality of fan-shaped second images by taking the center of the first image as a vertex, and recording phase information of each second image so that the phase information corresponds to rotation information of the rotating unit;
and acquiring image information of corresponding positions in each second image according to the positions of the light-emitting devices arranged in the fan-shaped display area, and generating pictures to be displayed by the light-emitting devices in each phase according to the image information so as to obtain the pictures correspondingly displayed by the light-emitting devices under each piece of rotation information.
10. The method according to claim 9, wherein segmenting the first image into a plurality of fan-shaped second images comprises: dividing the first image into a number of second images equal to the number of refreshes according to the number of refreshes of the light emitting device within a rotation angle required to display the first image as the substrate rotates.
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| CN111243452B (en) * | 2020-01-17 | 2022-09-06 | 深圳市福瑞达显示技术有限公司 | Fan screen display method, fan screen and fan screen display system |
| CN111128033B (en) * | 2020-01-20 | 2021-12-28 | 合肥维信诺科技有限公司 | Adjusting device of flexible display panel and display terminal |
| CN111312127B (en) * | 2020-02-24 | 2023-07-28 | 北京京东方光电科技有限公司 | Display picture adjusting method and device of rotary display screen and rotary display screen |
| CN115810319A (en) * | 2022-10-19 | 2023-03-17 | 武汉华星光电技术有限公司 | Display device |
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| CN107919087A (en) * | 2018-01-03 | 2018-04-17 | 上海天马有机发光显示技术有限公司 | A kind of display panel and its driving method, display device |
| CN109285873A (en) * | 2018-10-24 | 2019-01-29 | 京东方科技集团股份有限公司 | Display base plate and preparation method thereof, display device |
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| CA2278768A1 (en) * | 1997-01-27 | 1998-07-30 | Lumino Licht Elektronik Gmbh | Device for displaying alpha numeric symbols and/or graphic symbols |
| CN105094495A (en) * | 2015-09-15 | 2015-11-25 | 京东方科技集团股份有限公司 | Touch electrode structure, touch screen and display device |
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