CN111354306B - Display device, electronic apparatus, and display method - Google Patents
Display device, electronic apparatus, and display method Download PDFInfo
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- CN111354306B CN111354306B CN202010266806.0A CN202010266806A CN111354306B CN 111354306 B CN111354306 B CN 111354306B CN 202010266806 A CN202010266806 A CN 202010266806A CN 111354306 B CN111354306 B CN 111354306B
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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]
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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
- G09G2320/00—Control of display operating conditions
- G09G2320/02—Improving the quality of display appearance
- G09G2320/0233—Improving the luminance or brightness uniformity across the screen
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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
- G09G2320/00—Control of display operating conditions
- G09G2320/02—Improving the quality of display appearance
- G09G2320/0257—Reduction of after-image effects
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Abstract
The embodiment of the application provides a display device, electronic equipment and a display method, wherein the display device comprises a first display area, a second display area, a power management chip and a driving control chip, the power management chip is respectively electrically connected with a first pixel layer in the first display area and a second pixel layer in the second display area, and the driving control chip is electrically connected with the power management chip and used for controlling the power management chip to provide a first power supply voltage for the first pixel layer and a second power supply voltage for the second pixel layer, so that the brightness of the first pixel layer is the same as that of the second pixel layer. Based on this, by adjusting the relative relationship between the first power supply voltage and the second power supply voltage, the luminance difference between the first pixel layer and the second pixel layer can be compensated, so that the luminance of the first pixel layer is the same as that of the second pixel layer, no obvious boundary exists between the first display area and the second display area, and the afterimage phenomenon between the display areas caused by large consumption difference of display elements is avoided.
Description
Technical Field
The present disclosure relates to the field of electronic technologies, and in particular, to a display device, an electronic apparatus, and a display method.
Background
With the development of electronic technology, electronic devices such as smart phones are becoming more and more popular. During the use process of the electronic equipment, the electronic equipment can display a picture by using the display device of the electronic equipment.
When the display device is displaying, the display device may cause loss to the display elements in the display device, and the loss may cause the brightness to gradually decrease as the operation time of the display elements increases. If the display device frequently displays in a local area, the brightness attenuation between different areas of the display device is inconsistent, and a problem of a sharp boundary between different areas of the display device, that is, a problem of image sticking of the display device, occurs.
Disclosure of Invention
The embodiment of the application provides a display device, electronic equipment and a display method, and the technical problem that the display device has an image sticking phenomenon due to inconsistent element loss caused by inconsistent working time of display elements in different areas of the display device can be solved.
In a first aspect, an embodiment of the present application provides a display device, including:
a first display area including a first pixel layer;
a second display area including a second pixel layer;
the power management chip is electrically connected with the first pixel layer and the second pixel layer respectively; and
and the driving control chip is electrically connected with the power management chip and is used for controlling the power management chip to provide a first power supply voltage for the first pixel layer and a second power supply voltage for the second pixel layer so as to enable the brightness of the first pixel layer to be the same as that of the second pixel layer.
In a second aspect, an embodiment of the present application further provides an electronic device, including:
a display device as described above; and
the circuit board is electrically connected with the display device and is used for controlling the display device to display information.
In a third aspect, an embodiment of the present application further provides a display method, which is applied in the electronic device described above, and the display method includes:
setting a first corresponding relation between the working duration and the display brightness of the first pixel layer, and setting a second corresponding relation between the working duration and the display brightness of the second pixel layer;
determining a first operating time length of the first pixel layer and a second operating time length of the second pixel layer;
determining a first current brightness value of the first pixel layer under the first working duration according to the first corresponding relation and the first working duration;
determining a second current brightness value of the second pixel layer under the second working duration according to the second corresponding relation and the second working duration;
judging whether the difference value between the first current brightness value and the second current brightness value is within a preset range;
if so, continuing to provide the first current voltage under the first working duration to the first pixel layer, and continuing to provide the second current voltage under the second working duration to the second pixel layer;
and if not, providing the first power supply voltage to the first pixel layer, and providing the second power supply voltage to the second pixel layer, so that the brightness of the first pixel layer is the same as that of the second pixel layer.
According to the display device, the electronic equipment and the display method, the display device comprises the first display area, the second display area, the power management chip and the driving control chip. The first display area comprises a first pixel layer, the second display area comprises a second pixel layer, the power management chip is electrically connected with the first pixel layer and the second pixel layer respectively, and the driving control chip is electrically connected with the power management chip and used for controlling the power management chip to provide a first power supply voltage for the first pixel layer and a second power supply voltage for the second pixel layer so that the brightness of the first pixel layer is the same as that of the second pixel layer. Based on this, through adjusting the relative relation of the first power supply voltage and the second power supply voltage, the luminance difference between the first pixel layer and the second pixel layer can be made up, so that the luminance of the first pixel layer is the same as that of the second pixel layer, no obvious boundary exists between the first display area and the second display area, the afterimage phenomenon between display areas caused by large consumption difference of display elements is avoided, and the display effect of the display device is better.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings used in the description of the embodiments will be briefly introduced below. It is obvious that the drawings in the following description are only some embodiments of the application, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
Fig. 1 is a schematic view of a first structure of a display device according to an embodiment of the present disclosure.
Fig. 2 is a schematic view of a first display state of the display device according to the embodiment of the present application.
Fig. 3 is a schematic view of a second display state of the display device according to the embodiment of the present application.
Fig. 4 is a schematic view of a second structure of a display device according to an embodiment of the present disclosure.
Fig. 5 is a schematic circuit diagram of a display device according to an embodiment of the present disclosure.
Fig. 6 is a schematic structural diagram of a third display device according to an embodiment of the present application.
Fig. 7 is a schematic diagram of a fourth structure of a display device according to an embodiment of the present application.
Fig. 8 is a schematic diagram of a fifth structure of a display device according to an embodiment of the present application.
Fig. 9 is a schematic structural diagram of an electronic device according to an embodiment of the present application.
Fig. 10 is a flowchart illustrating a display method according to an embodiment of the present application.
Fig. 11 is a first luminance decay curve diagram of a display device according to an embodiment of the present disclosure.
Fig. 12 is a first display state change diagram of a display device according to an embodiment of the present application.
Fig. 13 is a second luminance decay curve of the display device according to the embodiment of the present disclosure.
Fig. 14 is a second display state change diagram of the display device according to the embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The embodiment of the application provides a display device, electronic equipment and a display method. The execution main body of the display method can be the display device provided by the embodiment of the application, or an electronic device integrated with the display device, wherein the display device can be implemented in a hardware or software manner. The electronic device may be a mobile terminal device such as a mobile phone and a tablet computer, or may be a game device, an Augmented Reality (AR) device, a Virtual Reality (VR) device, an on-vehicle computer, a notebook computer, a data storage device, an audio playing device, a video playing device, a wearable device, or other devices having a display device, where the wearable device may be an intelligent bracelet, intelligent glasses, or the like.
Referring to fig. 1 and fig. 2, fig. 1 is a first structural schematic diagram of a display device according to an embodiment of the present disclosure, and fig. 2 is a first display state schematic diagram of the display device according to the embodiment of the present disclosure. As shown in fig. 1, a display device 100 provided in this embodiment of the present application may include a power management chip 10, a driving control chip 20, and a first display area 30 and a second display area 40 connected to each other, where both the first display area 30 and the second display area 40 may be used for displaying text or images, the first display area 30 includes a first pixel layer 31 therein, and the second display area 40 includes a second pixel layer 41 therein. The power management chip 10 is electrically connected to the first pixel layer 31 and the second pixel layer 41, the driving control chip 20 is electrically connected to the power management chip 10, the driving control chip 20 is configured to control the power management chip 10 to provide a first power supply voltage to the first pixel layer 31, and the driving control chip 20 is further configured to control the power management chip 10 to provide a second power supply voltage to the second pixel layer 41, so that the brightness of the first pixel layer 31 is the same as the brightness of the second pixel layer 41.
Wherein, when the display device 100 is a flexible folding screen, the first display area 30 and the second display area 40 may be two different display areas in the flexible folding screen. For example, please refer to fig. 3 in combination with fig. 2, wherein fig. 3 is a schematic diagram of a second display state of the display device according to the embodiment of the present application. When the flexible folding screen is in the unfolded state, as shown in fig. 2, the first display area 30 and the second display area 40 are connected to each other and can collectively display an image. When the flexible folding screen is in a folded state, as shown in fig. 3, at least one of the first display area 30 and the second display area 40 may display an image.
When the display device 100 is a non-flexible folding screen, the first display area 30 and the second display area 40 may also be two different display areas in the display device 100. For example, please refer to fig. 4, wherein fig. 4 is a second structural diagram of the display device according to the embodiment of the present disclosure. The first display area 30 may be disposed around the second display area 40, and the second display area 40 may be all adjacent to the first display area 30 at the periphery thereof. Wherein the second display area 40 may be used for dynamically or statically displaying time, weather, application messages, etc. under off-screen display. That is, the second display area 40 can be used for the off-screen display alone, and the second display area 40 can also be used for the bright-screen display together with the first display area 30.
It is understood that in the display apparatus 100, the second display area 40 may be positioned in the middle of the first display area 30. The first display area 30 may also partially surround the second display area 40, and a part of the edge of the second display area 40 is adjacent to the first display area 30. The corners of the first display area 30 may also be irregularly shaped, for example, having a notch in which the second display area 40 may be located.
It is understood that the structure and the positional relationship of the first display area 30 and the second display area 40 in the embodiment of the present application are not limited to the above examples, and other schemes of having the first display area 30 and the second display area 40 in the display device 100 are also within the scope of the present application.
The first display area 30 and the second display area 40 may display the same image together, for example, the first display area 30 displays a part of the preset image, and the second display area 40 displays the rest of the preset image. The first display area 30 and the second display area 40 may also display different images, for example, the first display area 30 displays a preset image and the second display area 40 displays a taskbar image.
Wherein the first display area 30 and the second display area 40 can work simultaneously to display the same or different images, of course, one of the first display area 30 and the second display area 40 can display information while the other does not display any information to realize partial display of the display device 100. For example, when the flexible folding screen is in the unfolded state or the display device 100 is in the bright screen display state, the first display area 30 and the second display area 40 may collectively display an image; when the flexible folding screen is in a folding state or the display device 100 is in a screen-off display state, one of the first display area 30 and the second display area 40 may display information while the other does not operate, thereby realizing partial display of the display device 100.
Due to the inherent characteristics of the display device 100, there is a problem that the luminance of the pixel unit in the display area is attenuated after the pixel unit is operated for a period of time, so that the luminance of the pixel unit is attenuated as the operation time of the display area is increased. In practical use, after the display device 100 displays locally for a period of time, the operating time of the local display area is much longer than that of the non-local display area, and the luminance of the pixel unit in the local display area is less than that of the pixel unit in the non-local display area, so that an obvious boundary exists between the local display area and the non-local display area.
The present application provides the above solution to solve the above technical problems. In the display device 100 of the embodiment of the application, the power management chip 10 is electrically connected to the first pixel layer 31 in the first display area 30 and the second pixel layer 41 in the second display area 40, respectively, and the driving control chip 20 controls the power management chip 10 to provide the first power supply voltage to the first pixel layer 31 and provide the second power supply voltage to the second pixel layer 41. Based on this, the supply voltage may affect the brightness of the first pixel layer 31 and the second pixel layer 41, and further, by adjusting the relative relationship between the first supply voltage and the second supply voltage, the brightness difference between the first pixel layer 31 in the first display area 30 and the second pixel layer 41 in the second display area 40 may be compensated, so that the brightness of the first pixel layer 31 is the same as the brightness of the second pixel layer 41, and no obvious boundary exists between the first display area 30 and the second display area 40, thereby avoiding the ghost phenomenon between the display areas due to the large wear difference of the display elements, and the display effect of the display device 100 is better.
It is to be understood that, in the description of the present application, terms such as "first", "second", and the like are used merely to distinguish similar objects and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated.
The specific structures of the first display area 30 and the second display area 40 according to the embodiment of the present application will be described in detail below with reference to the accompanying drawings.
In this embodiment, the first pixel layer 31 in the first display region 30 and the second pixel layer 41 in the second display region 40 may include at least one pixel point, and the pixel point may be an Organic Light-Emitting Diode (OLED), and under the action of voltage, the OLED may be lighted to emit Light rays with different colors. Specifically, please refer to fig. 5, wherein fig. 5 is a schematic circuit diagram of a display device according to an embodiment of the present disclosure. The display device 100 of the embodiment of the present application may include at least one driving unit, and one driving unit is electrically connected to at least one pixel. One of the driving units may at least include two Thin Film transistors (TFT for short) T1 and T2 and a capacitor C1, as shown in fig. 5, a gate of T1 is electrically connected to a Scan signal Scan, a source of T1 is electrically connected to a Data signal Data, and a drain of T1 is electrically connected to a gate of T2 and one end of the capacitor C1; the drain electrode of the T2 is electrically connected with the anode (ELVDD) of an external power supply, the source electrode of the T2 is electrically connected with the anode of the OLED, and the cathode of the OLED is electrically connected with the cathode (ELVSS) of the external power supply; one end of the capacitor C1 is electrically connected to the drain of T1 and the gate of T2, and the other end of the capacitor C1 is electrically connected to the drain of T2 and the external power positive (ELVDD).
When the anode and the cathode of the external power supply are electrically connected with the driving unit and the pixel point, the Scan signal Scan controls the T1 to be opened, the Data signal Data enters the gate of the T2 and the capacitor C1 through the T1, then the T1 is closed, and due to the storage effect of the C1, the gate voltage of the T2 can still keep the Data signal voltage, so that the T2 is in a conducting state, and the driving current enters the OLED through the T2 to drive the OLED to emit light. Further, under the control of the driving unit, the pixel points of the display device 100 may be lighted. And, when the pressure difference between the external power supply positive pole and the negative pole is bigger, the luminance of pixel is higher, and the luminance of pixel tends to be in direct proportion with the pressure difference.
Based on this, this application embodiment can adjust the luminance of different pixel through changing the pressure differential between external power source positive pole and the negative pole. Specifically, please refer to fig. 6 and 7, in which fig. 6 is a third structural schematic diagram of the display device provided in the embodiment of the present application, and fig. 7 is a fourth structural schematic diagram of the display device provided in the embodiment of the present application. The display device 100 of the embodiment of the present application further includes a first power input layer 32, a second power input layer 42, a first power input line 33, a second power input line 43, and a positive input power 51. The first power input layer 32 and the first power input line 33 are positioned in the first display region 30, the second power input layer 42 and the second power input line 43 are positioned in the second display region 40, and the positive input power 51 is positioned in both the first display region 30 and the second display region 40. Wherein the first power input layer 32 is disposed at one side of the first pixel layer 31, and the second power input layer 42 is disposed at one side of the second pixel layer 41. The positive electrode input power source 51 is provided on the other side of the first and second pixel layers 31 and 41, and further the first and second pixel layers 31 and 41 are provided between the positive electrode input power source 51 and the first and second power input layers 32 and 42.
As shown in fig. 6 and 7, the first pixel layer 31 and the second pixel layer 41 may be in the same layer, and the first power input layer 32 and the second power input layer 42 may also be in the same layer. In appearance, the inner and outer surfaces of the first pixel layer 31 and the second pixel layer 41 may be leveled and integrated, and the inner and outer surfaces of the first power input layer 32 and the second power input layer 42 may be leveled and integrated. Here, the first power input line 33 may be disposed at a periphery of the first power input layer 32, and the second power input line 43 may be disposed at a periphery of the second power input layer 42. For example, in fig. 7, the first power input line 33 may be disposed at both left and right sides of the first power input layer 32, and the second power input line 43 may be disposed at both left and right sides of the second power input layer 42.
It is to be understood that, in an actual production process, the first pixel layer 31 and the second pixel layer 41 may be formed on the same substrate by a process such as evaporation, and the first power input layer 32 and the second power input layer 42 may also be formed on the same substrate by a process such as film formation, exposure, and etching. After the first pixel layer 31, the second pixel layer 41, the first power input layer 32, the second power input layer 42, and the positive input power 51 are prepared, the upper part may be packaged, and then, various processes such as polarizer attachment, bonding of control lines such as the first power input line 33 and the second power input line 43 to a chip, and the like are performed, so as to finally prepare the complete display device 100.
When the first power input layer 32 and the second power input layer 42 are laid on one side of the first pixel layer 31 and one side of the second pixel layer 41, the first power input layer 32 can be directly contacted with the first pixel layer 31 to realize the electrical connection with the pixel points on the first pixel layer 31, and the second power input layer 42 can also be directly contacted with the second pixel layer 41 to realize the electrical connection with the pixel points on the second pixel layer 41, so that the first power input layer 32 and the second power input layer 42 do not need to be electrically connected with the pixel points through wires, and the display influence of the wires on the pixel points can be reduced.
Meanwhile, the first power input layer 32 may be electrically connected to the negative electrode of the power management chip 10 through the first power input line 33, and at this time, the power management chip 10, the first power input line 33, the first power input layer 32, the first pixel layer 31 and the positive input power 51 may form a current loop to make the first pixel layer 31 emit light. The second power input layer 42 can be electrically connected to the negative electrode of the power management chip 10 through the second power input line 43, and at this time, the power management chip 10, the second power input line 43, the second power input layer 42, the second pixel layer 41 and the positive input power 51 can form another current loop to make the second pixel layer 41 emit light. When the first power input line 33 is disposed at the periphery of the first power input layer 32 and the second power input line 43 is disposed at the periphery of the second power input layer 42, the display influence of the first power input line 33 and the second power input line 43 on the pixel point can also be reduced.
It is understood that the substrate formed by the first power input layer 32 and the second power input layer 42 may further be provided with a first connection point 34 and a second connection point 44, wherein the first power input line 33 may be electrically connected to the negative electrode of the power management chip 10 through the first connection point 34, and the power management chip 10 may provide a first power supply voltage to the first power input layer 32 through the first connection point 34 and the first power input line 33; the second power input line 43 may be electrically connected to the negative electrode of the power management chip 10 through the second connection point 44, and the power management chip 10 may supply a second power supply voltage to the second power input layer 42 through the second connection point 44 and the second power input line 43.
It can be understood that, because a plurality of pixel points are generally arranged on the first pixel layer 31 and the second pixel layer 41, in order to realize accurate control of each pixel point, the first power input line 33 and the second power input line 43 are generally arranged in a plurality of numbers, the plurality of first power input lines 33 can be electrically connected with the cathode of the power management chip 10 through one first connection point 34, the plurality of second power input lines 43 can be electrically connected with the cathode of the power management chip 10 through one second connection point 44, and further, the difficulty of wiring between the plurality of power input lines and the power management chip 10 can be reduced.
As shown in fig. 7, two first connection points 34 and two second connection points 44 may be provided to correspond to the first power input line 33 and the second power input line 43 on the left and right sides. Specifically, the left first power input line 33 may be connected to the left first connection point 34, and the right first power input line 33 may be connected to the right first connection point 34; similarly, the left second power input line 43 may be connected to the left second connection point 44, and the right second power input line 43 may be connected to the right second connection point 44, so that cross-connection between the connection points and the connection points may be prevented. Meanwhile, the two first connection points 34 may be disposed outside the two second connection points 44, and correspondingly, the first power input line 33 on the same side may also be disposed outside the second power input line 43, so as to further avoid cross connection of the first power input line 33 and the second power input line 43.
Based on the display device 100 of fig. 6 and 7, in the display device 100 of the embodiment of the present application, the power management chip 10 provides the first power supply voltage (ELVSS1) with negative polarity to the pixels in the first pixel layer 31 of the first display region 30 through the first connection point 34, the first power input line 33, and the first power input layer 32. The power management chip 10 supplies a second power supply voltage (ELVSS2) of a negative polarity to the pixel points in the second pixel layer 41 of the second display region 40 through the second connection point 44, the second power input line 43, and the second power input layer 42. The anodes of the pixels in the first pixel layer 31 and the anodes of the pixels in the second pixel layer 41 are electrically connected to the positive input power supply 51, and the positive input power supply 51 supplies the same positive voltage (ELVDD) to the pixels in the first pixel layer 31 and the second pixel layer 41.
In the display device 100 of the embodiment of the application, the driving control chip 20 may control the power management chip 10 to provide the first power supply voltage (ELVSS1) to the first pixel layer 31 and provide the second power supply voltage (ELVSS2) to the second pixel layer 41 during the display process. The first power supply voltage (ELVSS1) may be the same as the second power supply voltage (ELVSS2), and when the positive electrode voltage (ELVDD) of the positive electrode input power source 51 is constant, the voltage difference between the two ends of the first pixel layer 31 is equal to the voltage difference between the two ends of the second pixel layer 41, and if the luminance attenuation degrees of the first pixel layer 31 and the second pixel layer 41 are the same, the luminance of the first pixel layer 31 is equal to the luminance of the second pixel layer 41. Since the voltage difference between the two ends of the pixel layer may affect the brightness of the pixel, if the brightness attenuation degrees of the first pixel layer 31 and the second pixel layer 41 are not consistent, the first power supply voltage (ELVSS1) may be adjusted to be different from the second power supply voltage (ELVSS2) so that the brightness of the first pixel layer 31 is equal to the brightness of the second pixel layer 41.
It is understood that the driving control chip 20 may be electrically connected to the power management chip 10 through an input/output interface. Furthermore, the driving control chip 20 may transmit a control chip to the power management chip 10, and the power management chip 10 may also transmit the current first power supply voltage of the first pixel layer 31 and the current second power supply voltage of the second pixel layer 41 to the driving control chip 20, so as to implement bidirectional control between the driving control chip 20 and the power management chip 10.
Please refer to fig. 8, wherein fig. 8 is a schematic diagram illustrating a fifth structure of a display device according to an embodiment of the present disclosure. The display device 100 of the embodiment of the present application may further include a first input power source 35, a second input power source 45, and a negative input power source layer 52. The first input power source 35 is located in the first display area 30, the second input power source 45 is located in the second display area 40, and the negative input power layer 52 is located in both the first display area 30 and the second display area 40. Also, the negative input power layer 52 may be positioned at one side of the first and second pixel layers 31 and 41 and cover one side of the first and second pixel layers 31 and 41. The first input power source 35 may be disposed at the other side of the first pixel layer 31 and the second input power source 45 may be disposed at the other side of the second pixel layer 41, and further, the first pixel layer 31 and the second pixel layer 41 may be disposed between the negative input power source layer 52 and the first input power source 35 and the second input power source 45. The first input power source 35 and the second input power source 45 may be in the same layer in appearance, that is, the inner and outer surfaces of the first input power source 35 and the second input power source 45 may be flat and integrated.
It is understood that the first input power source 35 and the second input power source 45 may be formed on the same substrate by cleaning and surface treatment, photolithography, film formation, exposure, etching, and the like in an actual production process. After the first pixel layer 31, the second pixel layer 41, the first input power source 35, the second input power source 45, and the negative input power source layer 52 are prepared, the upper components may be packaged, and then various processes such as polarizer attachment, control circuit and chip attachment are performed, so as to finally prepare the complete display device 100.
The first input power source 35 can be electrically connected to the anode of the first pixel layer 31 and the anode of the power management chip 10 through a conductive material such as a power input line, and the power management chip 10, the first input power source 35, the first pixel layer 31 and the negative input power layer 52 can form a current loop to make the first pixel layer 31 emit light. Similarly, the second input power 45 can be electrically connected to the anode of the second pixel layer 41 and the anode of the power management chip 10 through a conductive material such as a power input line, and the power management chip 10, the second input power 45, the second pixel layer 41 and the negative input power layer 52 can form another current loop to make the second pixel layer 41 emit light.
It is understood that in the display device 100 of the embodiment of the present application, the driving control chip 20 may control the power management chip 10 to provide the first power supply voltage (ELVDD1) to the first input power source 35, and the driving control chip 20 may also control the power management chip 10 to provide the second power supply voltage (ELVDD2) to the second input power source 45, so that the first pixel layer 31 and the second pixel layer 41 have the same brightness. The first power supply voltage (ELVDD1) may be the same as the second power supply voltage (ELVDD2), and when the negative electrode voltage (ELVSS) of the negative electrode input power supply layer 52 is constant, the voltage difference between the two ends of the first pixel layer 31 is equal to the voltage difference between the two ends of the second pixel layer 41, and if the brightness attenuation degrees of the first pixel layer 31 and the second pixel layer 41 are the same, the brightness of the first pixel layer 31 is equal to the brightness of the second pixel layer 41. Since the voltage difference between the two ends of the pixel layer may affect the brightness of the pixel, if the brightness attenuation degrees of the first pixel layer 31 and the second pixel layer 41 are not consistent, the first power supply voltage (ELVDD1) may be adjusted to be different from the second power supply voltage (ELVDD2) so that the brightness of the first pixel layer 31 and the brightness of the second pixel layer 41 are equal.
In the embodiment of the present application, by adjusting the power supply voltage between the first input power source 35 and the second input power source 45, the luminance of the first display area 30 including the first pixel layer 31 and the luminance of the second display area 40 including the second pixel layer 41 can be consistent, and further, no obvious boundary exists between the first display area 30 and the second display area 40, so that the image sticking phenomenon between the display areas due to the large wear difference of the display elements is avoided, and the display effect of the display device 100 is better.
The driving control chip 20 may be electrically connected to the first pixel layer 31 and the second pixel layer 41, respectively, the driving control chip 20 may transmit a Data signal Data1 of a first voltage to the first pixel layer 31, and the driving control chip 20 may transmit a Data signal Data2 of a second voltage to the second pixel layer 41.
It is understood that the first voltage may be equal to the second voltage, the first voltage may be different from the second voltage, and the magnitudes of the first voltage and the second voltage may be related to the luminance decay of the first pixel layer 31 and the second pixel layer 41, and the luminance of the first pixel layer 31 and the second pixel layer 41 may be made the same by adjusting the magnitudes of the first voltage and the second voltage. For example, when the luminance attenuation value of the first pixel layer 31 is greater than the luminance attenuation value of the second pixel layer 41, the first voltage may be greater than the second voltage so that the current luminance of the first pixel layer 31 is the same as the current luminance of the second pixel layer 41.
In the embodiment of the present application, the voltages of the Data signal Data1 and the Data signal Data2 are controlled to adjust the luminance of the first display area 30 including the first pixel layer 31 and the luminance of the second display area 40 including the second pixel layer 41 to be the same, so that the first display area 30 and the second display area 40 do not have an obvious boundary, thereby avoiding the image sticking phenomenon between the display areas due to the large wear difference of the display elements, and improving the display effect of the display device 100.
The display device 100 of the embodiment of the present application may be an Organic Light-Emitting Diode (OLED) display. The display device 100 may be a full-screen. At this time, the display apparatus 100 may display information in a full screen, so that the electronic device 1000 has a large screen occupation ratio. The display device 100 may include only the display region instead of the non-display region, or the non-display region may have a smaller area for the user. At this time, electronic devices such as a camera and a proximity sensor in the electronic apparatus 1000 may be hidden under the display device 100, and a fingerprint recognition module of the electronic apparatus 1000 may be disposed on the rear cover 600 of the electronic apparatus 1000.
Referring to fig. 9, please refer to the display device 100 according to the above embodiment, and fig. 9 is a schematic structural diagram of an electronic apparatus according to an embodiment of the present disclosure. The electronic device 1000 of the present application may include a cover plate 200, a middle frame 300, a circuit board 400, a battery 500, a rear cover 600, and the like, in addition to the display device 100 described above.
The cover plate 200 may be mounted on the middle frame 300, and the cover plate 200 covers the display device 100 to protect the display device 100 from being scratched or damaged by water. The cover plate 200 may be a transparent glass cover plate 200 so that a user can view contents displayed by the display device 100 through the cover plate 200. The cover plate 200 may be a glass cover plate 200 of sapphire material.
The display device 100 may be mounted on the middle frame 300 and connected to the rear cover 600 through the middle frame 300 to form a display surface of the electronic apparatus 1000. The display device 100 may serve as a front case of the electronic apparatus 1000, and together with the rear cover 600, form a housing of the electronic apparatus 1000 for accommodating other electronic components of the electronic apparatus 1000. For example, the housing may be used to house the electronics of the electronic device 1000, such as a processor, memory, one or more sensors, lighting elements, and the like.
The middle frame 300 may have a thin plate-like or sheet-like structure, or may have a hollow frame structure. The middle frame 300 is used for providing a supporting function for the electronic devices in the electronic apparatus 1000, so as to mount the electronic devices in the electronic apparatus 1000 together. For example, lighting elements, a receiver, the circuit board 400, the battery 500, and other electronic components in the electronic apparatus 1000 may be mounted on the center frame 300 to be fixed.
The circuit board 400 may be mounted on the middle frame 300. The circuit board 400 may be a main board of the electronic device 1000. One, two or more electronic devices such as a microphone, a speaker, a receiver, an earphone interface, a universal serial bus interface (USB interface), a camera assembly, a distance sensor, an ambient light sensor, a gyroscope, and a processor may be integrated on the circuit board 400.
The display device 100 may be electrically connected to the circuit board 400 to control the display of the display device 100 through a processor on the circuit board 400, and the circuit board 400 may be used to control the display device 100 to display images, texts, and other information.
The battery 500 may be mounted on the middle frame 300. Meanwhile, the battery 500 is electrically connected to the circuit board 400 to enable the battery 500 to supply power to the electronic device 1000. Among them, the power management chip 10 may be disposed on the circuit board 400. The power management chip 10 may be used to distribute the voltage provided by the battery 500 to various electronic devices in the electronic apparatus 1000. The battery 500 may be a rechargeable battery 500. For example, the battery 500 may be a lithium ion battery 500.
The rear cover 600 is located at a side of the circuit board 400 away from the display device 100, that is, the rear cover 600 is located at an outermost portion of the electronic apparatus 1000 and is used to form an outer contour of the electronic apparatus 1000. The rear cover 600 may be integrally formed. In the forming process of the rear cover 600, structures such as a rear camera hole and a fingerprint identification module mounting hole can be formed on the rear cover 600.
The rear cover 600 may be made of metal, such as magnesium alloy, stainless steel, etc. It should be noted that the material of the rear cover 600 according to the embodiment of the present application is not limited to this, and other methods may be adopted. For example, the rear cover 600 may be made of plastic. For another example, the rear cover 600 may be made of ceramic or glass. For another example, the rear cover 600 may include a plastic part and a metal part, and the rear cover 600 may be a housing structure in which the metal and the plastic are matched with each other. Specifically, the metal part may be formed first, for example, a magnesium alloy substrate is formed by injection molding, and then plastic is injected on the magnesium alloy substrate to form a plastic substrate, so as to form a complete housing structure.
Based on the display device 100 and the electronic device 1000, an embodiment of the application further provides a display method. Specifically, please refer to fig. 10, and fig. 10 is a schematic flow chart of a display method according to an embodiment of the present application. The display method according to the embodiment of the present application can be applied to the display device 100 and the electronic apparatus 1000, and the display method includes:
in 101, a first correspondence of an operating time length of a first pixel layer to a display luminance is set, and a second correspondence of an operating time length of a second pixel layer to a display luminance is set.
Due to the inherent characteristics of the display device 100, there is a problem of luminance degradation after the display area is operated for a period of time, so that the luminance of the pixel units in the display area is degraded as the operating time of the display area is increased. According to the attenuation relation characteristic of the operating time and the brightness, a first corresponding relation of the operating time length and the display brightness of the first pixel layer 31 and a second corresponding relation of the operating time length and the display brightness of the second pixel layer 41 can be determined.
For example, a first luminance decay curve of the first pixel layer 31 and a second luminance decay curve of the second pixel layer 41 may be prepared using the decay characteristic of the on-time versus luminance. Alternatively, a mapping table of the operating time length of the first pixel layer 31 and the display brightness, a mapping table of the operating time length of the second pixel layer 41 and the display brightness, and the like may be prepared by using the attenuation relation characteristic of the operating time and the brightness.
The first luminance decay curve of the first pixel layer 31 and the second luminance decay curve of the second pixel layer 41 are prepared as an example.
Referring to fig. 11, fig. 11 is a first luminance decay curve chart of the display device according to the embodiment of the present disclosure. Since the brightness decay of the same batch of pixel units is substantially the same, the brightness decay curve of the first pixel layer 31 can be prepared by using other pixel units in the same batch as the pixel units in the first pixel layer 31. Similarly, the brightness decay curve of the second pixel layer 41 can be prepared by using other pixel units in the same batch as the pixel units in the second pixel layer 41.
In fig. 11, a curve S1 represents a luminance decay curve of the first pixel layer 31 in the first display region 30, and a curve S2 represents a luminance decay curve of the second pixel layer 41 in the second display region 40. As can be seen from fig. 11, the luminance decay of a pixel unit is generally related to the characteristics of the pixel unit, and the luminance decay curves of different pixel units may be different. In fig. 11, when the operation time period is m, the luminance a of the first pixel layer 31 is smaller than the luminance a of the second pixel layer 41; when the operation time is 2m, the luminance B of the first pixel layer 31 is less than the luminance B of the second pixel layer 41, and the difference between the luminance a and the luminance B is much greater than the difference between the luminance a and the luminance B. It follows that as the operating time increases, the degree of luminance decay of the first pixel layer 31 is much greater than that of the second pixel layer 41.
At 102, a first operating time period of a first pixel layer and a second operating time period of a second pixel layer are determined.
In 103, a first current luminance value of the first pixel layer at the first operating time duration is determined according to the first correspondence and the first operating time duration, and a second current luminance value of the second pixel layer at the second operating time duration is determined according to the second correspondence and the second operating time duration.
The first pixel layer 31 and the second pixel layer 41 may have different brightness in different first and second operation periods. A first current luminance value of the first pixel layer 31 at the first operating duration may be determined based on the first correspondence and the first operating duration, and a second current luminance value of the second pixel layer 41 at the second operating duration may be determined based on the second correspondence and the second operating duration.
For example, in fig. 11, after the first operation time period is determined, a first current luminance value of the first pixel layer 31 at the first operation time period may be determined according to the first luminance decay curve and the first operation time period. Similarly, when the second operation time length is determined, the second current brightness value of the second pixel layer 41 at the second operation time length can be determined according to the second brightness attenuation curve and the second operation time length.
It is understood that the first operation period during which the first pixel layer 31 is illuminated in the operation state and the second operation period during which the second pixel layer 41 is illuminated in the operation state may be determined according to a clock module inside the display device 100. Two clock modules may be provided in actual production to manage the operating time periods of the first pixel layer 31 and the second pixel layer 41, respectively.
At 104, it is determined whether the difference between the first current luminance value and the second current luminance value is within a predetermined range.
If yes, the first current voltage under the first working duration is continuously provided for the first pixel layer, and the second current voltage under the second working duration is continuously provided for the second pixel layer in 105.
If not, a first supply voltage is provided to the first pixel layer and a second supply voltage is provided to the second pixel layer so that the brightness of the first pixel layer is the same as the brightness of the second pixel layer 106.
When the difference between the first current luminance value of the first pixel layer 31 and the second current luminance value of the second pixel layer 41 is small, the difference between the display effects of the first display area 30 and the second display area 40 is small based on human visual error. Therefore, when the difference between the first current brightness value and the second current brightness value is within the preset range, the first current voltage at the first operation duration may be continuously provided to the first pixel layer 31, and the second current voltage at the second operation duration may be continuously provided to the second pixel layer 41 without adjusting the brightness of the first pixel layer 31 and the second pixel layer 41.
When the difference between the first current luminance value of the first pixel layer 31 and the second current luminance value of the second pixel layer 41 is large, the difference between the display effects of the first display area 30 and the second display area 40 is large. Referring to fig. 12 in conjunction with fig. 11, wherein fig. 12 is a first display state change diagram of the display device according to the embodiment of the present application. As shown in fig. 12, if the luminance of the first pixel layer 31 and the second pixel layer 41 is not adjusted, the boundary between the display effects of the first display region 30 and the second display region 40 becomes more and more obvious as the operation time period increases. For example, the boundary between the first display field 30 and the second display field 40 for a period of 2m of operation is more distinct than the boundary between the first display field 30 and the second display field 40 for a period of m of operation.
In order to make the display effects of the first display area 30 and the second display area 40 consistent, when the difference between the first current brightness value and the second current brightness value is not within the preset range, the brightness of the first pixel layer 31 and the second pixel layer 41 needs to be adjusted. Specifically, a first supply voltage may be supplied to the first pixel layer 31, and a second supply voltage may be supplied to the second pixel layer 41, so that the luminance of the first pixel layer 31 is the same as the luminance of the second pixel layer 41.
Please refer to fig. 13 and 14, wherein fig. 13 is a second luminance decay curve chart of the display device according to the embodiment of the present application. Fig. 14 is a second display state change diagram of the display device according to the embodiment of the present application. In fig. 13, a curve S3 is a luminance decay curve of the first pixel layer 31 in the first display region 30, and a curve S4 represents a luminance decay curve of the second pixel layer 41 in the second display region 40. When the operation length m is long and it is detected that the difference between the first current luminance value of the first pixel layer 31 and the second current luminance value of the second pixel layer 41 is not within the preset range, a first supply voltage may be provided to the first pixel layer 31, so that the luminance of the first pixel layer 31 is adjusted from luminance a to luminance a, and a second supply voltage may be provided to the second pixel layer 41, so that the luminance of the second pixel layer 41 is maintained as luminance a, and further, after adjustment, the luminance of the first pixel layer 31 is the same as the luminance of the second pixel layer 41.
It is understood that as the operation time length increases, the adjusted luminance difference between the first pixel layer 31 and the second pixel layer 41 will continue to increase, and then the luminance of the first pixel layer 31 and the second pixel layer 41 needs to be adjusted again. For example, when the operation length is 2m, and it is detected that the difference between the first current luminance value of the first pixel layer 31 and the second current luminance value of the second pixel layer 41 is not within the preset range, another first power supply voltage may be provided to the first pixel layer 31, so that the luminance of the first pixel layer 31 is adjusted from zero degree B to luminance B, and another second power supply voltage may be provided to the second pixel layer 41, so that the luminance of the second pixel layer 41 is maintained as luminance B, and further, after adjustment, the luminance of the first pixel layer 31 may be the same as the luminance of the second pixel layer 41. In an actual display process, the above steps may be repeated to adjust the brightness of the first pixel layer 31 and the second pixel layer 41 for multiple times, so that no obvious display boundary exists between the first pixel layer 31 and the second pixel layer 41, thereby avoiding an afterimage phenomenon between display areas caused by a large difference in consumption of display elements, and improving the display effect of the display device 100.
The first display region 30 may include a first power input layer 32 and a first power input line 33, the first power input layer 32 is disposed at one side of the first pixel layer 31, and the first power input layer 32 is electrically connected to a cathode of the first pixel layer 31; the first power input line 33 is disposed at the periphery of the first power input layer 32, and the first power input layer 32 is electrically connected to the negative electrode of the power management chip 10 through the first power input line 33. Similarly, the second display region 40 may include a second power input layer 42 and a second power input line 43, the second power input layer 42 is disposed at one side of the second pixel layer 41, and the second power input layer 42 is electrically connected to the cathode of the second pixel layer 41; the second power input line 43 is disposed at the periphery of the second power input layer 42, and the second power input layer 42 is electrically connected to the negative electrode of the power management chip 10 through the second power input line 43. Based on this, the display method of the embodiment of the present application may further include: the driving control chip 20 controls the power management chip 10 to supply a first power supply voltage to the first pixel layer 31 through the first power input line 33 and the first power input layer 32, and the driving control chip 20 controls the power management chip 10 to supply a second power supply voltage to the second pixel layer 41 through the second power input line 43 and the second power input layer 42.
The first display area 30 may further include a first input power source 35, the first input power source 35 is electrically connected to the anode of the first pixel layer 31, and the first input power source 35 is electrically connected to the anode of the power management chip 10. The second display region 40 may further include a second input power supply 45, the second input power supply 45 being electrically connected to the anode of the second pixel layer 41, the second input power supply 45 being electrically connected to the anode of the power management chip 10. Based on this, the display method of the embodiment of the present application may further include: the control power management chip 10 supplies a first supply voltage to the first pixel layer 31 through the first input power source 35 and is used to supply a second supply voltage to the second pixel layer 41 through the second input power source 45. So that the luminance of the first pixel layer 31 is the same as the luminance of the second pixel layer 41.
The driving control chip 20 may be electrically connected to the first pixel layer 31 and the second pixel layer 41, and based on this, the display method according to the embodiment of the present disclosure may further include: the data signal of the first voltage is transferred to the first pixel layer 31 and is used to transfer the data signal of the second voltage to the second pixel layer 41 so that the luminance of the first pixel layer 31 is the same as the luminance of the second pixel layer 41.
The display device, the electronic device, and the display method provided in the embodiments of the present application are described in detail above. The principles and implementations of the present application are described herein using specific examples, which are presented only to aid in understanding the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application. Meanwhile, for those skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.
Claims (10)
1. A display device, comprising:
the display panel comprises a first display area and a second display area, wherein the first display area comprises a first pixel layer and a first power input layer, the first power input layer is arranged on one side of the first pixel layer and is in contact with the first pixel layer, and the first power input layer is electrically connected with a cathode of the first pixel layer;
the second display area comprises a second pixel layer and a second power input layer, the second power input layer is arranged on one side of the second pixel layer and is in contact with the second pixel layer, and the second power input layer is electrically connected with the cathode of the second pixel layer;
the positive input power supply is arranged on one side of the first pixel layer and one side of the second pixel layer, which are far away from the first power input layer and the second power input layer, and is electrically connected with the positive electrode of the first pixel layer and the positive electrode of the second pixel layer;
the first power input layer and the second power input layer are electrically connected with the negative electrode of the power management chip; and
the driving control chip is electrically connected with the power management chip and used for determining a first current brightness value of the first pixel layer under the first working time length according to a first corresponding relation of the working time length of the first pixel layer and a first attenuation curve of display brightness and the current first working time length of the first pixel layer; determining a second current brightness value of the second pixel layer under the second working duration according to a second corresponding relation reflected by the working duration of the second pixel layer and a second attenuation curve of the display brightness and the current second working duration of the second pixel layer; and controlling the power management chip to provide a first power supply voltage to the first pixel layer and a second power supply voltage to the second pixel layer according to the first current brightness value and the second current brightness value, so that the brightness of the first pixel layer is the same as that of the second pixel layer.
2. The display device according to claim 1, wherein the first display region further comprises:
a first power input line disposed at a periphery of the first power input layer, the first power input layer being electrically connected to a negative electrode of the power management chip through the first power input line;
the driving control chip is used for controlling the power management chip to provide the first power supply voltage for the first pixel layer through the first power input line and the first power input layer.
3. The display device according to claim 2, wherein the second display region further comprises:
a second power input line disposed at a periphery of the second power input layer, the second power input layer being electrically connected to a negative electrode of the power management chip through the second power input line;
the driving control chip is used for controlling the power management chip to provide the second power supply voltage for the second pixel layer through the second power input line and the second power input layer.
4. The display device according to claim 3, further comprising:
a first connection point through which the first power input line is electrically connected with a negative electrode of the power management chip; and
and the second power input line is electrically connected with the cathode of the power management chip through the second connection point.
5. The display device according to claim 1, wherein the positive input power supply further comprises:
a first input power supply electrically connected to the anode of the first pixel layer, the first input power supply also being electrically connected to the anode of the power management chip;
the driving control chip is used for controlling the power management chip to provide the first power supply voltage for the first pixel layer through the first input power supply.
6. The display device according to claim 5, wherein the positive input power supply further comprises:
a second input power supply electrically connected to the anode of the second pixel layer, the second input power supply also being electrically connected to the anode of the power management chip;
the driving control chip is used for controlling the power management chip to provide the second power supply voltage for the second pixel layer through the second input power supply.
7. The display device according to claim 1, wherein the driving control chip is electrically connected to the first pixel layer and the second pixel layer, respectively, and the driving control chip is configured to transmit a data signal of a first voltage to the first pixel layer and transmit a data signal of a second voltage to the second pixel layer, so that the luminance of the first pixel layer is the same as the luminance of the second pixel layer.
8. The display device according to any one of claims 1 to 7, further comprising:
and the drive control chip is electrically connected with the power management chip through the input and output interface.
9. An electronic device, comprising:
a display device according to any one of claims 1 to 8; and
the circuit board is electrically connected with the display device and is used for controlling the display device to display information.
10. A display method applied in the electronic device according to claim 9, the display method comprising:
acquiring a first corresponding relation reflected by the working duration of the first pixel layer and a first attenuation curve of display brightness, and acquiring a second corresponding relation reflected by the working duration of the second pixel layer and a second attenuation curve of the display brightness;
determining a first operating time length of the first pixel layer and a second operating time length of the second pixel layer;
determining a first current brightness value of the first pixel layer under the first working duration according to the first corresponding relation and the first working duration;
determining a second current brightness value of the second pixel layer under the second working duration according to the second corresponding relation and the second working duration;
judging whether the difference value between the first current brightness value and the second current brightness value is within a preset range;
if so, continuing to provide the first current voltage under the first working duration to the first pixel layer, and continuing to provide the second current voltage under the second working duration to the second pixel layer;
and if not, providing the first power supply voltage to the first pixel layer, and providing the second power supply voltage to the second pixel layer, so that the brightness of the first pixel layer is the same as that of the second pixel layer.
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| CN202010266806.0A CN111354306B (en) | 2020-04-07 | 2020-04-07 | Display device, electronic apparatus, and display method |
| PCT/CN2021/075291 WO2021203822A1 (en) | 2020-04-07 | 2021-02-04 | Display apparatus, electronic device, and display method |
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| CN202010266806.0A CN111354306B (en) | 2020-04-07 | 2020-04-07 | Display device, electronic apparatus, and display method |
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| WO2021203822A1 (en) | 2021-10-14 |
| CN111354306A (en) | 2020-06-30 |
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