CN111326110B - Pixel circuit, display panel, display device and switching method thereof - Google Patents
Pixel circuit, display panel, display device and switching method thereof Download PDFInfo
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- CN111326110B CN111326110B CN202010255333.4A CN202010255333A CN111326110B CN 111326110 B CN111326110 B CN 111326110B CN 202010255333 A CN202010255333 A CN 202010255333A CN 111326110 B CN111326110 B CN 111326110B
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- display device
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- 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
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
- G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
Abstract
The invention discloses a pixel circuit, a display panel, a display device and a switching method thereof, wherein the pixel circuit comprises: the light-emitting device comprises a light-emitting element, a driving circuit and a photosensitive sensor which are sequentially connected, wherein the photosensitive sensor converts an optical signal into an electric signal under the irradiation of a preset light source to control the driving circuit to light the light-emitting element. By implementing the invention, the photosensitive sensor is arranged in the pixel circuit, the photosensitive sensor can convert an optical signal into an electric signal under the irradiation of a preset light source, and the electric signal can control the driving circuit to light the light-emitting element, so that the light-emitting element can be controlled to be turned on and off under the condition of not contacting the light-emitting element, and the timeliness and convenience in certain scenes are enhanced. The pixel circuit, the display panel, the display device and the switching method of the display device are suitable for non-contact control over the display device, the starting and the closing of the display device are controlled by the specific light source, convenience and timeliness can be improved, and energy consumption can be saved.
Description
Technical Field
The invention relates to the technical field of display driving, in particular to a pixel circuit, a display panel, a display device and a switching method thereof.
Background
The OLED display is a display made using organic electroluminescent diodes. Since the OLED has self-luminous characteristics, it does not need a backlight, has high contrast, thin thickness, wide viewing angle, fast response speed, can be made into a flexible display panel, has a wide temperature range, and is a new application technology for the next generation of flat panel displays. The industrial prospect of the OLED is very wide, and enterprises in the industry are also striving to accumulate development experience and vigorously develop the OLED manufacturing industry.
The existing display devices such as OLED need to be realized in a contact control mode when being turned on or turned off; however, in some special scenarios, the OLED display device may not be able to be controlled in a contact manner, and at the same time, the OLED display device may not be able to be turned on or off.
Disclosure of Invention
In view of this, embodiments of the present invention provide a pixel circuit, a display panel, a display device and a switching method thereof, so as to solve the technical problem that an OLED display device in the prior art cannot be used in some application scenarios.
The technical scheme provided by the invention is as follows:
a first aspect of embodiments of the present invention provides a pixel circuit, including: the light-emitting component, drive circuit and the photosensitive sensor that connect gradually, photosensitive sensor is in predetermineeing the light source under the illumination with light signal conversion electric signal control drive circuit lights the light-emitting component.
With reference to the first aspect, in a first embodiment of the first aspect, the photosensitive sensor is a photodiode or a photoresistor.
A second aspect of an embodiment of the present invention provides a display panel, including: the substrate comprises a luminous area and a non-luminous area, the luminous area is used for arranging a luminous display assembly, the luminous display assembly comprises the luminous element, the non-luminous area is used for arranging a control assembly, and the control assembly comprises the photosensitive sensor and a driving circuit; the packaging layer covers the outside of the display panel and is used for protecting internal components; and the pixel circuit according to any one of the first aspect and the second aspect of the embodiments of the present invention, wherein the pixel circuit is disposed on the substrate.
With reference to the second aspect, in the first embodiment of the second aspect, the photosensor is disposed in the non-light emitting region between the pixels.
With reference to the second aspect, in a second embodiment of the second aspect, the photosensitive sensor is made of a transparent material, and the photosensitive sensor is disposed above a screen of the display panel.
With reference to the second aspect, in a third implementation of the second aspect, the photosensor is disposed below a screen of the display panel.
A third aspect of embodiments of the present invention provides a display device, including: an apparatus body having a device region; the display panel according to any one of the second aspect and the second aspect of the embodiments of the present invention is covered on the device body.
A fourth aspect of the embodiments of the present invention provides a switching method for a display device, where a pixel circuit of the display device includes a light emitting element, a driving circuit, and a photosensor, which are connected in sequence, the switching method including the steps of: judging whether the display device needs to be started or not; when the display device needs to be started, a preset light source is irradiated on the photosensitive sensor, and the light-emitting element is lightened.
With reference to the fourth aspect, in a first embodiment of the fourth aspect, the method for switching the display device further includes: when the display device needs to be turned off, the preset light source is removed, and the light-emitting element is turned off.
With reference to the fourth aspect, in a second embodiment of the fourth aspect, the preset light source is disposed in a code scanning gun, and when the display device needs to be started, the code scanning gun is directed at the photosensitive sensor to light the light emitting element.
The technical scheme of the invention has the following advantages:
according to the pixel circuit, the display panel, the display device and the switching method thereof, the photosensitive sensor is arranged in the pixel circuit, the photosensitive sensor can convert optical signals into electric signals under the irradiation of the preset light source, the electric signals can control the driving circuit to light the light-emitting element, so that the light-emitting element can be controlled to be turned on and off under the condition of not contacting the light-emitting element, and the timeliness and convenience of the pixel circuit, the display panel and the display device in certain scenes are enhanced. Meanwhile, the position of the photosensitive sensor in the display panel can be set according to different requirements, for example, in order to ensure the optimal identification and display effect, the photosensitive sensor can be arranged in a non-light-emitting area between pixels, and in order to increase the area of the light-emitting area, the photosensitive sensor can also be arranged below the screen or made into a transparent photosensitive sensor arranged above the screen. The pixel circuit, the display panel, the display device and the switching method of the display device are suitable for non-contact control over the display device, the starting and the closing of the display device are controlled by the specific light source, convenience and timeliness can be improved, and energy consumption can be saved.
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, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a block diagram of a pixel circuit according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a display device according to an embodiment of the present invention;
FIG. 3 is a flowchart illustrating a method for turning on and off a display device according to an embodiment of the present invention;
fig. 4 is a flowchart illustrating a method for turning on and off a display device according to another embodiment of the present invention.
Detailed Description
As described in the background art, the OLED display device in the prior art needs to be implemented by a contact control method when being turned on or turned off; however, in some special scenarios, the OLED display device may not be able to be controlled in a contact manner, and at the same time, the OLED display device may not be able to be turned on or off, so that the OLED display device may not be used in some special scenarios requiring non-contact control of the display screen in the conventional contact control manner.
Based on this, the present invention provides a pixel circuit comprising: the light-emitting device comprises a light-emitting element, a driving circuit and a photosensitive sensor which are sequentially connected, wherein the photosensitive sensor converts an optical signal into an electric signal under the irradiation of a preset light source to control the driving circuit to light the light-emitting element.
According to the technical scheme, the photosensitive sensor is arranged in the pixel circuit, the photosensitive sensor can convert optical signals into electric signals under the irradiation of a preset light source, and the electric signals can control the driving circuit to light the light-emitting element, so that the display device can be controlled to be turned on and off under the condition of not contacting the display device.
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. 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.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; the two elements may be directly connected or indirectly connected through an intermediate medium, or may be communicated with each other inside the two elements, or may be wirelessly connected or wired connected. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
Example 1
An embodiment of the present invention provides a pixel circuit, as shown in fig. 1, the pixel circuit includes: the light-emitting device comprises a light-emitting element 1, a driving circuit 2 and a photosensitive sensor 3 which are connected in sequence, wherein the photosensitive sensor 3 converts an optical signal into an electric signal under the irradiation of a preset light source 4 to control the driving circuit 2 to light the light-emitting element 1. The light response range of the light sensor 3 can be adjusted by selecting different light-sensitive materials, so that the light sensor 3 has a function of converting an optical signal into an electrical signal under the irradiation of a light source with a specific wavelength and energy.
In an embodiment, the selection of the photosensitive material may be specifically set according to an application scenario thereof, for example, when the photosensitive material is applied to a code scanning payment scenario, the photosensitive material may select a corresponding material according to a wavelength and energy of an emergent light source of the code scanning gun, so that the photosensitive sensor may light the light emitting element through the driving circuit under irradiation of the code scanning gun, the code scanning gun is removed, and the display screen is turned off, thereby playing roles of protecting privacy and reducing power consumption.
As an alternative implementation of the embodiment of the present invention, the main element of the photosensor 3 may be constituted by a photodiode or a photoresistor. In addition, the photosensitive sensor 3 may also be formed by other elements sensitive to light, which is not limited in the present invention.
According to the pixel circuit provided by the embodiment of the invention, the photosensitive sensor is arranged in the pixel circuit, the photosensitive sensor can convert an optical signal into an electric signal under the irradiation of a preset light source, and the electric signal can control the driving circuit to light the light-emitting element, so that the light-emitting element can be controlled to be turned on or off under the condition of not contacting the pixel circuit, and the timeliness and the convenience of the pixel circuit in certain scenes are enhanced.
Example 2
An embodiment of the present invention provides a display panel, which includes a substrate, an encapsulation layer, and the pixel circuit described in any one of embodiments 1. The substrate comprises a light emitting area and a non-light emitting area, wherein the light emitting area is used for arranging a light emitting display assembly, the light emitting display assembly comprises a light emitting element, the non-light emitting area is used for arranging a control assembly, and the control assembly comprises the photosensitive sensor and a driving circuit; and the packaging layer covers the outside of the display panel and is used for protecting the internal components. The display panel may be any one of an LCD display panel, a PMOLED display panel, or an AMOLED display panel, which is not limited in the present invention.
As an optional implementation manner of the embodiment of the present invention, each pixel region of the display panel may include a photosensor and a pixel light-emitting region, the arrangement manner between the photosensor and the pixel point may have various forms, the position and size of the photosensor may be adjusted as needed, the photosensor may be distributed in the non-light-emitting region between the pixels, connected to the driving TFT, and integrated in the pixel circuit to ensure the optimal recognition and display effects.
As an alternative to the embodiment of the present invention, in order to increase the area of the light emitting area of the display panel, the photosensor may be disposed below the screen of the display panel, i.e., on the side of the substrate away from the pixel circuit. In addition, the photosensitive sensor can also be made of transparent materials, the made transparent photosensitive sensor is arranged above the screen of the display panel, and the control of the display panel can be realized on the basis of not influencing the display effect of the display panel.
According to the display panel provided by the embodiment of the invention, the photosensitive sensor is arranged in the pixel circuit of the display panel, the photosensitive sensor can convert an optical signal into an electric signal under the irradiation of a preset light source, and the electric signal can control the driving circuit to light the light-emitting element, so that the display panel can be controlled to be turned on and off under the condition of not contacting the display panel, and the timeliness and the convenience of the display panel in certain scenes are enhanced. Meanwhile, the position of the photosensitive sensor in the display panel can be set according to different requirements, for example, in order to ensure the optimal identification and display effect, the photosensitive sensor can be arranged in a non-light-emitting area between pixels, and in order to increase the area of the light-emitting area, the photosensitive sensor can also be arranged below the screen or made into a transparent photosensitive sensor arranged above the screen.
Example 3
An embodiment of the present invention provides a display device, including: an apparatus body having a device region; the display panel according to any of the above embodiments, integrated in a device body. The display device can be a product or a component with a display function, such as a mobile phone, a flat panel, a television, a display, a palm computer, an ipod, a digital camera, a navigator and the like.
Fig. 2 is a schematic structural diagram of a display device in an embodiment, where the display device includes an apparatus body 810 and a display panel 820. The display panel 820 is disposed on the apparatus body 810 and is interconnected with the apparatus body 810. The display panel 820 may be the display panel in any of the embodiments described above, and is used for displaying a static or dynamic picture.
According to the display device provided by the embodiment of the invention, the photosensitive sensor is arranged in the pixel circuit of the display device, the photosensitive sensor can convert an optical signal into an electric signal under the irradiation of a preset light source, and the electric signal can control the driving circuit to light the light-emitting element, so that the display device can be controlled to be turned on and off under the condition of not contacting the display device, and the timeliness and the convenience of the display device in certain scenes are enhanced.
Example 4
An embodiment of the present invention provides a switching method of a display device, where a pixel circuit of the display device includes a light emitting element, a driving circuit, and a photosensor, which are sequentially connected to each other, as shown in fig. 3, the switching method includes the following steps:
step S101: judging whether a display device needs to be started or not;
step S102: when the display device needs to be started, a preset light source is irradiated on the photosensitive sensor, and the light-emitting element is lightened.
In one embodiment, a photosensitive sensor can be arranged at one position or a plurality of positions of the display device, so that the on and off states of the whole display device can be controlled, and the function of a remote switch is achieved. Under the irradiation of light with specific wavelength and energy, the photosensitive sensor absorbs photons to generate corresponding electric signals, and after the electric signals are amplified by the driving circuit, the light emitting elements of the display device are in a lighting state.
As an optional implementation manner of the embodiment of the present invention, as shown in fig. 4, the switching method of the display device further includes the following steps:
step S103: when the display device needs to be turned off, the preset light source is removed, and the light-emitting element is turned off. Specifically, when the display device needs to be turned off, the preset light source can be used for not irradiating the photosensor any more, namely the photosensor cannot absorb photons to generate an electric signal, at the moment, the driving circuit cannot be conducted, and the light-emitting element is changed from a lighting state to a turning-off state.
According to the switching method of the display device provided by the embodiment of the invention, the photosensitive sensor is arranged in the pixel circuit of the display device, the photosensitive sensor can convert an optical signal into an electric signal under the irradiation of the preset light source, and the electric signal can control the driving circuit to light the light-emitting element, so that the display device can be controlled to be turned on and off under the condition of not contacting the display device, and the timeliness and the convenience of the display device in certain scenes are enhanced. The switching method of the display device provided by the embodiment of the invention is suitable for non-contact control of the display device, and the starting and the closing of the display device are controlled by the specific light source, so that the convenience and the timeliness can be improved, and the energy consumption can be saved.
As an optional implementation manner of the embodiment of the present invention, the switching method of the display device provided in the embodiment of the present invention may be used in code scanning payment, and the specific implementation steps thereof are as follows: firstly, a light source emitted by a code scanning gun irradiates the surface of a display device, then, a photosensitive material in a photosensitive sensor in the display device absorbs photons, an optical signal is converted into an electric signal, a related driving circuit starts to work, the light source is removed, and the display device can be rapidly extinguished. The light response range of the photosensitive material used in the photosensitive sensor is consistent with the spectrum of a light source emitted by the code scanning gun. The display device can present required information for the code scanning gun to identify after being lightened.
As an optional implementation manner of the embodiment of the present invention, the switching method of the display device provided in the embodiment of the present invention may be used in special application environments such as industry and military, and the specific implementation steps thereof are as follows: when the display device is placed in an environment which cannot be manually operated, the switch method of the display device provided by the embodiment of the invention can be adopted to carry out non-contact remote control. The light source emitter with specific wavelength and power is used as a control tool, so that the light source irradiates the surface of the display screen, the display screen is changed from a blank state to a lighting state, an optional picture is presented, then the information can be selected by the light source, the specific content on the display device is controlled, the display device is switched to a required picture, and the required information is presented. When the operation is finished and the display device needs to be turned off, the light source is removed.
Although the present invention has been described in detail with respect to the exemplary embodiments and the advantages thereof, those skilled in the art will appreciate that various changes, substitutions and alterations can be made to the embodiments without departing from the spirit and scope of the invention as defined by the appended claims. For other examples, one of ordinary skill in the art will readily appreciate that the order of the process steps may be varied while maintaining the scope of the present invention.
Moreover, the scope of the present application is not intended to be limited to the particular embodiments of the process, machine, manufacture, composition of matter, means, methods and steps described in the specification. As one of ordinary skill in the art will readily appreciate from the disclosure of the present invention, processes, machines, manufacture, compositions of matter, means, methods, or steps, presently existing or later to be developed, that perform substantially the same function or achieve substantially the same result as the corresponding embodiments described herein may be utilized according to the present invention. Accordingly, the appended claims are intended to include within their scope such processes, machines, manufacture, compositions of matter, means, methods, or steps.
Claims (5)
1. A switching method of a display device, wherein a pixel circuit of the display device includes a light emitting element, a driving circuit, and a photosensor, which are connected in this order, the switching method comprising:
judging whether the display device needs to be started or not;
when the display device needs to be started, a preset light source is irradiated on the photosensitive sensor, and the light-emitting element is lightened;
when the display device needs to be turned off, the preset light source is removed, and the light-emitting element is turned off;
the preset light source is arranged in the code scanning gun, and when the display device needs to be started, the code scanning gun is aligned to the photosensitive sensor, and the light-emitting element is lightened.
2. The method of switching the display device according to claim 1, wherein the photosensor is a photodiode or a photoresistor.
3. The switching method of a display device according to claim 1, wherein the photosensor is disposed in a non-light emitting region between pixels.
4. The method of claim 1, wherein the photosensitive sensor is made of a transparent material, and the photosensitive sensor is disposed above a screen of a display panel in the display device.
5. The method of claim 1, wherein the photosensor is disposed below a screen of a display panel in the display device.
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| CN202010255333.4A CN111326110B (en) | 2020-04-02 | 2020-04-02 | Pixel circuit, display panel, display device and switching method thereof |
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| CN202010255333.4A CN111326110B (en) | 2020-04-02 | 2020-04-02 | Pixel circuit, display panel, display device and switching method thereof |
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| CN114420051B (en) * | 2022-01-28 | 2023-08-22 | 京东方科技集团股份有限公司 | Man-machine interaction pixel circuit and OLED display screen |
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