CN112099273A - Display panel, display module and display device - Google Patents
Display panel, display module and display device Download PDFInfo
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- CN112099273A CN112099273A CN202011036102.0A CN202011036102A CN112099273A CN 112099273 A CN112099273 A CN 112099273A CN 202011036102 A CN202011036102 A CN 202011036102A CN 112099273 A CN112099273 A CN 112099273A
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1343—Electrodes
- G02F1/134309—Electrodes characterised by their geometrical arrangement
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/13338—Input devices, e.g. touch panels
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Abstract
The embodiment of the invention discloses a display panel, a display module and a display device, wherein the display panel comprises a first display area and a second display area adjacent to the first display area, the second display area is reused as a light sensing element setting area, the first display area comprises a plurality of first sub-pixels arranged in an array manner, the second display area comprises a plurality of second sub-pixels arranged in an array manner, and the pixel area of the first sub-pixels is smaller than that of the second sub-pixels; the first sub-pixel comprises a first pixel electrode and a first common electrode, and the second sub-pixel comprises a second pixel electrode and a second common electrode; in a display stage of the display panel, a first driving voltage is loaded between the first pixel electrode and the first common electrode, a second driving voltage is loaded between the second pixel electrode and the second common electrode, and the first driving voltage and the second driving voltage are loaded independently. The display panel can realize full-screen display and has a good visual effect.
Description
Technical Field
The embodiment of the invention relates to a display technology, in particular to a display panel, a display module and a display device.
Background
In the field of display technology, full-screen display is becoming a research hotspot.
The full-screen display and the front camera function are contradictory, and the prior art adopts a scheme of reducing the pixel density of a camera shooting area to increase the light transmittance of the area, so that the display device has the full-screen display and the front camera function.
However, the scheme of reducing the pixel density by increasing the size of the sub-pixels in the imaging region has the following problems: due to the fact that the sizes of the sub-pixels in the image pickup area are different from the sizes of the sub-pixels in other display areas, the voltage on the common electrode of the sub-pixels in the image pickup area is different from the voltage on the common electrode of the sub-pixels in the other display areas, and therefore the actual display gray scale of the sub-pixels in the image pickup area is different from the target display gray scale, the display effect of the image pickup area is abnormal, and the visual effect of the display panel is affected.
Disclosure of Invention
The embodiment of the invention provides a display panel, a display module and a display device, which are used for improving the visual effect while realizing full-screen display.
In a first aspect, an embodiment of the present invention provides a display panel, where the display panel includes a first display area and a second display area adjacent to the first display area, the second display area is reused as a light sensing element setting area, the first display area includes a plurality of first sub-pixels arranged in an array, the second display area includes a plurality of second sub-pixels arranged in an array, and a pixel area of the first sub-pixels is smaller than a pixel area of the second sub-pixels;
the first sub-pixel comprises a first pixel electrode and a first common electrode, and the second sub-pixel comprises a second pixel electrode and a second common electrode;
in a display stage of the display panel, a first driving voltage is loaded between the first pixel electrode and the first common electrode, a second driving voltage is loaded between the second pixel electrode and the second common electrode, and the first driving voltage and the second driving voltage are loaded independently.
In a second aspect, an embodiment of the present invention further provides a display module, including the display panel provided in the previous aspect, further including:
and the driving chip is used for loading a first driving voltage between the first pixel electrode and the first common electrode and loading a second driving voltage between the second pixel electrode and the second common electrode in a display stage of the display panel.
In a third aspect, an embodiment of the present invention further provides a display device, including the display module provided in the above aspect.
The embodiment of the invention realizes the compatibility of full-screen display and a front-end camera function by multiplexing the second display area as the light sensing element setting area, and further enables the second sub-pixel in the second display area to display the target gray scale under the action of the second driving voltage by independently loading the first driving voltage between the first pixel electrode and the first public electrode and loading the second driving voltage between the second pixel electrode and the second public electrode, thereby avoiding the situation that the actual display gray scale of the second sub-pixel is inconsistent with the target display gray scale due to the fact that the pixel area of the second sub-pixel is larger than the area of the first sub-pixel, and further improving the visual effect.
Drawings
Fig. 1 is a schematic structural diagram of a display panel according to an embodiment of the present invention;
fig. 2 is a schematic partial structure diagram of a display panel according to an embodiment of the present invention;
FIG. 3 is a schematic cross-sectional view of the display panel taken along AA' in FIG. 2;
FIG. 4 is a schematic diagram illustrating gray scale and driving voltage as a function of the present invention;
FIG. 5 is a circuit diagram of independent driving voltage loading according to an embodiment of the present invention;
FIG. 6 is a circuit diagram of another driving voltage independent loading according to an embodiment of the present invention;
FIG. 7 is a circuit diagram of another independent driving voltage loading circuit according to an embodiment of the present invention;
FIG. 8 is a circuit diagram of another independent driving voltage loading circuit according to an embodiment of the present invention;
FIG. 9 is a circuit diagram of another independent driving voltage loading circuit according to an embodiment of the present invention;
fig. 10-12 are schematic partial structural diagrams of another display panel according to an embodiment of the invention;
fig. 13 is a schematic structural diagram of a display module according to an embodiment of the present invention;
fig. 14 is a schematic structural diagram of a display device according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
Fig. 1 is a schematic structural diagram of a display panel according to an embodiment of the present invention, fig. 2 is a schematic partial structural diagram of a display panel according to an embodiment of the present invention, fig. 3 is a schematic sectional structural diagram of a display panel taken along AA' in fig. 2, referring to fig. 1, a display panel 100 according to an embodiment of the present invention includes a first display area 10 and a second display area 20 adjacent to the first display area 10, the second display area 20 is reused as a light sensing element disposing area, the first display area 10 includes a plurality of first sub-pixels 110 arranged in an array, the second display area 20 includes a plurality of second sub-pixels 210 arranged in an array, referring to fig. 2, a pixel area of the first sub-pixels 110 is smaller than a pixel area of the second sub-pixels 210; referring to fig. 3, the first subpixel 110 includes a first pixel electrode 121 and a first common electrode 131, and the second subpixel 210 includes a second pixel electrode 221 and a second common electrode 231; in the display phase of the display panel 100, a first driving voltage is applied between the first pixel electrode 121 and the first common electrode 131, a second driving voltage is applied between the second pixel electrode 221 and the second common electrode 231, and the first driving voltage and the second driving voltage are independently applied.
As shown in fig. 3, the display panel provided by the embodiment of the invention may be a liquid crystal display panel. In the display stage, the common electrodes of all the sub-pixels are electrically connected and loaded with common voltages, and the pixel electrodes of all the sub-pixels are loaded with pixel voltages, so that liquid crystals can deflect at different angles under the action of an electric field between the pixel electrodes and the common electrodes, so that different sub-pixels display different gray scales, and the display of a color picture is realized. Therefore, the target gray scale can be displayed by the sub-pixel by adjusting the driving voltage between the pixel electrode and the common electrode of the sub-pixel. In general, the functional relationship between the gray scale and the driving voltage applied between the pixel electrode and the driving electrode is different for different sub-pixels.
In this embodiment, by setting the pixel area of the second sub-pixel 210 to be larger than the pixel area of the first sub-pixel 110, the pixel density of the second display area 20 can be reduced, and the light transmittance of the second display area 20 can be increased, so that the second display area 20 can be reused as the light-sensing element setting area, and the compatibility of the full-screen display and the front-camera function is realized. However, such an arrangement may cause the actual display gray scale of the second sub-pixel 210 in the second display area 20 to be inconsistent with the target display gray scale thereof, thereby affecting the display effect of the light sensing element arrangement area and deteriorating the visual effect of the display panel, for the following reasons:
referring to fig. 4, fig. 4 is a schematic diagram illustrating a functional relationship between a gray scale and a driving voltage according to an embodiment of the present invention, where the driving voltage U refers to a voltage between a pixel electrode and a common electrode of a sub-pixel, and as can be seen from fig. 4, since pixel areas of a first sub-pixel and a second sub-pixel are different, functional relationships between the gray scale and the driving voltage displayed by the two sub-pixels are different, that is, when the first sub-pixel and the second sub-pixel display the same gray scale, a first driving voltage of the first sub-pixel and a second driving voltage of the second sub-pixel are different. For example, referring to fig. 4, when the target display gray scale of the first sub-pixel and the second sub-pixel is G, the first driving voltage is U1, and the second driving voltage is U2. With reference to fig. 3, in this embodiment, since the pixel area of the second sub-pixel 210 is larger than the pixel area of the first sub-pixel 110, the area of the second common electrode 231 in the corresponding region of the second sub-pixel 210 is larger than the area of the first common electrode 131 in the corresponding region of the first sub-pixel 110, so that there is a difference between the voltages on the second common electrode 231 and the first common electrode 131, that is, the actual voltage on the second common electrode 231 is not consistent with the loaded voltage. When the first sub-pixel 110 and the second sub-pixel 210 display the same gray scale, the voltages applied to the first pixel electrode 121 and the second pixel electrode 221 are the same, and thus, the voltage between the second pixel electrode 221 and the second common electrode 231 (for example, U0 in fig. 4) may not be equal to the second driving voltage U2 corresponding to the target display gray scale G, which causes the actual display gray scale of the second sub-pixel 210 to be inconsistent with the target display gray scale, thereby affecting the visual effect.
In order to solve the problem, the embodiment of the present invention adopts a scheme that, in the display stage of the display panel, a first driving voltage is independently applied between the first pixel electrode 121 and the first common electrode 131, and a second driving voltage is independently applied between the second pixel electrode 221 and the second common electrode 231, so that the second driving voltage between the second pixel electrode 221 and the second common electrode 231 can be matched with the target display gray scale of the second sub-pixel 210, and the visual effect can be improved.
For example, pixel voltages can be independently applied to the first pixel electrode 121 and the second pixel electrode 221, and the deviation of the voltage on the second common electrode 231 is compensated by adjusting the pixel voltage on the second pixel electrode 221, so that the voltage between the second pixel electrode 221 and the second common electrode 231 reaches the second driving voltage, and the second sub-pixel 210 can display a target gray scale, thereby improving a visual effect. For example, a common voltage may be independently applied to the first common electrode 131 and the second common electrode 231, so that the voltage between the second pixel electrode 221 and the second common electrode 231 reaches a second driving voltage, and the second sub-pixel 210 may display a target gray scale, thereby improving a visual effect. The embodiment of the present invention does not limit the manner of independently loading the first driving voltage and the second driving voltage, and the following detailed description is provided.
The embodiment of the invention realizes the compatibility of full-screen display and a front-end camera function by multiplexing the second display area as the light sensing element setting area, and further enables the second sub-pixel in the second display area to display the target gray scale under the action of the second driving voltage by independently loading the first driving voltage between the first pixel electrode and the first public electrode and loading the second driving voltage between the second pixel electrode and the second public electrode, thereby avoiding the situation that the actual display gray scale of the second sub-pixel is inconsistent with the target display gray scale due to the fact that the pixel area of the second sub-pixel is larger than the area of the first sub-pixel, and further improving the visual effect.
On the basis of the above embodiments, the following describes in further detail the implementation manner in which the first driving voltage and the second driving voltage are independently applied, and exemplarily provides 3 feasible manners.
First, optionally, in a display stage of the display panel, the first common electrode 131 is electrically connected to the second common electrode 231, the first pixel electrode 121 is electrically connected to a first pixel voltage terminal, the second pixel electrode 221 is electrically connected to a second pixel voltage terminal, the first pixel voltage terminal is used for loading a first pixel voltage to the first pixel electrode 121, and the second pixel voltage terminal is used for loading a second pixel voltage to the second pixel electrode 221, so that the first driving voltage and the second driving voltage are loaded independently.
For example, in the present embodiment, the first common electrode 131 and the second common electrode 231 are electrically connected, and the first common electrode 131 and the second common electrode 231 may be electrically connected by a trace. In other embodiments, the common electrode may be disposed corresponding to the entire layer of the display panel 100, the first common electrode 131 specifically refers to a part of the common electrode in the region corresponding to the first sub-pixel 110, and the second common electrode 231 specifically refers to a part of the common electrode in the region corresponding to the second sub-pixel 210, so that the first common electrode 131 and the second common electrode 231 are electrically connected, and the voltage on the second common electrode 231 is the same as the voltage on the first common electrode 131. The embodiment of the present invention does not limit the electrical connection manner between the first common electrode 131 and the second common electrode 231.
When the first common electrode 131 and the second common electrode 231 are electrically connected, theoretically, the voltages on the common electrodes are consistent and are all loaded voltages, but since the pixel area of the second sub-pixel 210 is larger than the pixel area of the first sub-pixel 110, the voltage on the second common electrode 231 and the voltage on the first common electrode 131 are different, that is, the voltage on the second common electrode 231 is deviated and is inconsistent with the loaded voltage, so that the voltage between the second pixel electrode 221 and the second common electrode 231 is not matched with the target display gray scale of the second sub-pixel 210, and the visual effect is affected.
Therefore, in order to compensate for the voltage deviation on the second common electrode 231, the embodiment controls the first pixel voltage on the first pixel electrode 121 to be independently applied, and controls the second pixel voltage on the second pixel electrode 221 to be independently applied, so that the first driving voltage and the second driving voltage can be independently applied, and thus, by adjusting the magnitude of the second pixel voltage, the voltage between the second pixel electrode 221 and the second common electrode 231 can reach the second driving voltage matched with the target display gray scale of the second sub-pixel 210, thereby improving the visual effect.
For example, fig. 5 is a schematic circuit diagram of a driving voltage independent loading according to an embodiment of the present invention, referring to fig. 5, each column of the first sub-pixels 110 may be electrically connected to a first pixel voltage terminal through a data signal line S10, and each column of the second sub-pixels 210 may be electrically connected to a second pixel voltage terminal through a data signal line S20, where the first pixel voltage terminal and the second pixel voltage terminal may be terminals in a driving circuit (driving chip).
Further, the second pixel voltage may be adjusted as follows to compensate for the deviation of the voltage on the second common electrode. Optionally, the working voltage of the first common electrode is x, and the working voltage of the second common electrode is y; in the display stage of the display panel, the voltages applied to the first common electrode 131 and the second common electrode are both x, and when the first subpixel 110 and the second subpixel 210 display the same gray scale, the first pixel voltage is a, and the second pixel voltage is a + (x-y).
The working voltage of the first common electrode is the optimal loading voltage of the first common electrode obtained through testing, the working voltage of the second common electrode is the optimal loading voltage of the second common electrode obtained through testing, in the display stage, the first common electrode and the second common electrode are electrically connected, and the loading voltages are x. As a result of the debugging, when the first pixel voltage loaded by the first pixel electrode 121 is a, if the second subpixel 210 and the first subpixel 110 are to display the same gray scale, the pixel voltage loaded on the second pixel electrode 221 is a + (x-y), so that the voltage between the second pixel electrode 221 and the second common electrode can reach the second driving voltage, and the actual display gray scale of the second subpixel 210 is consistent with the target display gray scale, thereby improving the visual effect.
For example, for the 0-255 gray levels, the second pixel voltage on the second pixel electrode 221 can be adjusted with reference to the voltage difference value on the second common electrode 231 of the 127 gray levels, and then the visual effect corresponding to the 0-255 gray levels can be confirmed, and if the visual effect of some gray levels is not optimal, fine adjustment can be performed.
Fig. 6 is a circuit diagram of independent loading of driving voltages according to an embodiment of the present invention, which schematically illustrates a second possible manner. Referring to fig. 6, optionally, in a display phase of the display panel, when the first sub-pixel and the second sub-pixel display the same gray scale, the first pixel electrode and the second pixel electrode (not shown in fig. 6) are loaded with the same pixel voltage; the first common electrode 131 is electrically connected to a first common voltage terminal for applying a first common voltage Vcom1 to the first common electrode 131, and the second common electrode 231 is electrically connected to a second common voltage terminal for applying a second common voltage Vcom2 to the second common electrode 231.
As described above, when the first and second common electrodes 131 and 231 are electrically connected and applied with the same common voltage, a deviation occurs in the voltage on the second common electrode 231 because the pixel area of the second sub-pixel is larger than that of the first sub-pixel. Therefore, in order to eliminate the deviation, instead of electrically connecting the first common electrode 131 and the second common electrode 231, the first common electrode 131 may be independently applied with the first common voltage Vcom1, and the second common electrode 231 may be independently applied with the second common voltage Vcom2, so that the voltage between the first pixel electrode and the first common electrode 131 reaches the first driving voltage, the voltage between the second pixel electrode and the second common electrode 231 reaches the second driving voltage, and the actual display gray scale of the second sub-pixel is consistent with the target display gray scale, thereby improving the visual effect.
It should be noted that fig. 6 illustrates an example in which the first common electrodes 131 of all the first sub-pixels in the first display region 10 are integrally disposed, and the second common electrodes 231 of all the second sub-pixels in the second display region 20 are integrally disposed, so that the first common voltage Vcom1 and the second common voltage Vcom2 can be independently applied. In other embodiments, the first common electrode 131 of each first sub-pixel and the second common electrode 231 of each second sub-pixel may be separately disposed, and each first common electrode 131 is connected by a wire, and each second common electrode 231 is connected by a wire, so as to implement independent loading of the first common voltage and the second common voltage, which is not limited in this embodiment of the present invention.
Fig. 7 is a schematic circuit diagram of another driving voltage independent loading circuit provided in the embodiment of the present invention, referring to fig. 7, further optionally, a first switch T1 is disposed between the first common voltage terminal and the first common electrode 131, and a second switch T2 is disposed between the second common voltage terminal and the second common electrode 231; in a display phase of the display panel, the first switch T1 and the second switch T2 are both turned on, the first common voltage terminal applies a first common voltage Vcom1 to all the first common electrodes 131, and the second common voltage terminal applies a second common voltage Vcom2 to all the second common electrodes 231; in the touch stage of the display panel, the first switch T1 and the second switch T2 are both turned off, and the first common electrode 131 and the second common electrode 231 are multiplexed as the touch electrode 30.
First, it should be noted that fig. 7 only exemplarily shows an arrangement manner of the touch electrode 30, and specifically, the touch electrode 30 may be formed by a plurality of first common electrodes 131 and a plurality of second common electrodes 231, which can be designed by a person skilled in the art. In addition, by multiplexing the first common electrode 131 and the second common electrode 231 as touch electrodes, an increase in a metal film layer may be avoided, so that the thickness of the display device may be reduced.
Specifically, when the first switch T1 and the second switch T2 are both turned on, the first common electrode 131 and the second common electrode 231 may be independently applied with the first common voltage Vcom1 and the second common voltage Vcom2, respectively, to eliminate the voltage deviation on the second common electrode 231 due to the larger pixel area of the second sub-pixel 210. When the first switch T1 and the second switch T2 are both turned off, the first common electrode 131 and the second common electrode 231 can be reused as the touch electrode 30, and the touch signal is transmitted through the touch signal traces, so as to implement the touch function.
Fig. 8 is a circuit diagram of another driving voltage independent loading according to an embodiment of the present invention, which exemplarily provides the 3 rd possibility. Optionally, in a display stage of the display panel, the first common electrode and the second common electrode are electrically connected; referring to fig. 8, the display panel further includes a plurality of data signal lines S0 extending in the column direction; in the first display region 10, the first pixel electrode 121 of each column of the first sub-pixels 110 is electrically connected to one data signal line S0; in the second display area 20, the second pixel electrode 221 of each column of the second sub-pixels 210 is alternately connected to the two data signal lines S0 on both sides of the column of the second sub-pixels 210.
Similarly, in this embodiment, the first common electrode and the second common electrode may be electrically connected through a trace, or may be electrically connected in an integrated manner, which is not limited in this embodiment of the present invention. In the technical solution of the present embodiment, the second pixel electrode 221 of each row of the second sub-pixels 210 in the second display area 20 is alternately connected to the two data signal lines S0 on both sides of the row of the second sub-pixels 210, so that the actual display gray scale of each second sub-pixel 210 in the row of the second sub-pixels 210 can be alternately changed on the basis of the target display gray scale by applying different data signals to the data signal lines S0 on both sides of the row of the second sub-pixels 210, thereby improving the abnormal visual effect caused by the voltage deviation on the second common electrode 231 in the column direction.
With continued reference to fig. 8, optionally, the second pixel electrodes 221 of the odd-numbered row second sub-pixels 210 are connected to the data signal line S0 on the first side of the second sub-pixels 210, and the second pixel electrodes 221 of the even-numbered row second sub-pixels 210 are connected to the data signal line S0 on the second side of the second sub-pixels 210.
With this arrangement, the actual display gray levels of the second sub-pixels 210 in the adjacent rows can be alternately changed on the basis of the target display gray level, so as to improve the visual effect. In other embodiments, for a column of the second sub-pixels 210, the second pixel electrodes 221 of adjacent rows of the second sub-pixels 210 may also be alternately connected to the data signal lines S0 on both sides of the column of the second sub-pixels 210, which is not limited in the embodiment of the present invention. For example, fig. 9 is a circuit diagram for independently loading another driving voltage according to an embodiment of the present invention, and fig. 9 illustrates that the second pixel electrodes 221 of two adjacent rows of second sub-pixels 210 are alternately connected to the data signal lines S0 on both sides of the column of second sub-pixels 210, which can be set by a person skilled in the art.
Further, in order to realize that the actual display gray scale of each second sub-pixel 210 in a row of second sub-pixels 210 alternately changes on the basis of the target display gray scale, the following scheme may be adopted: optionally, in two adjacent data signal lines S0, one data signal line S0 is applied with a positive voltage, and the other data signal line S0 is applied with a negative voltage; the positive voltage is greater than the common voltage of the first common electrode, and the negative voltage is less than the common voltage of the first common electrode.
Referring to fig. 8 or 9, for example, the data signal lines S1 in odd columns may be applied with a positive voltage, and the data signal lines S2 in even columns may be applied with a negative voltage, so that the electric fields between the pixel electrodes and the common electrodes of the two adjacent columns of sub-pixels may be prevented from influencing each other, thereby improving the effect. In the present embodiment, since the second pixel electrode 221 of each row of the second sub-pixels 210 is alternately connected to the two data signal lines S0 on both sides of the row of the second sub-pixels 210, the scheme can make the actual display gray scale of any row of the second sub-pixels 210 in the second display area 20 alternately change on the basis of the target display gray scale, so that the equalization in the column direction improves the abnormal visual effect caused by the deviation of the voltage on the second common electrode.
For example, it is assumed that the target display gray scales of the first sub-pixel 110 and the second sub-pixel 210 are the same, and in order to display the target gray scale, the voltage difference between the pixel electrode and the common electrode is required to be 2V. In order to display the target gray scale, the first common electrode and the second common electrode are electrically connected, and the common voltage of the first common electrode is 2V, the voltage applied to the data signal line S1 of the odd-numbered columns is 4V, and the voltage applied to the data signal line S2 of the even-numbered columns is 0V. For the first sub-pixels 110, since the voltage difference between the first pixel electrode 121 and the first common electrode of each row of the first sub-pixels 110 is the same, and is 2V, the actual display gray scale and the target display gray scale of all the first sub-pixels 110 are the same. For a row of the second sub-pixels 210, assuming that the actual voltage on the second common electrode is 1.9V, the voltage difference between the second pixel electrode 221 electrically connected to the data signal line S1 of the odd row and the second common electrode 231 is 2.1V, the voltage difference between the second pixel electrode 221 electrically connected to the data signal line S2 of the even row and the second common electrode 231 is 1.9V, and the voltage difference fluctuates between 2V, so that the actual display gray scale of any row of the second sub-pixels 210 in the second display area 20 is alternately changed on the basis of the target display gray scale, and the equalization in the row direction improves the abnormal visual effect caused by the voltage deviation on the second common electrode.
In summary, the above-mentioned embodiments provide 3 feasible ways to independently load the first driving voltage and the second driving voltage, and both can solve the problem that the difference between the voltage on the second common electrode 231 and the voltage on the first common electrode 131 occurs due to the pixel area of the second sub-pixel 210 being larger than the pixel area of the first sub-pixel 110, which affects the visual effect.
On the basis of the above embodiments, the structure of the display panel will be further described below.
Referring to fig. 2, optionally, the first sub-pixel 110 includes a red sub-pixel 111, a green sub-pixel 112, and a blue sub-pixel 113, and the second sub-pixel 210 includes a red sub-pixel 211, a green sub-pixel 212, and a blue sub-pixel 213; the second display area 20 further includes a plurality of white sub-pixels 214, and the white sub-pixels 214 are used for transmitting external light when the light sensing elements are operated.
It should be noted that fig. 2 indicates sub-pixels with different colors in different display areas by different reference numerals to illustrate the distinction. In the second display area 20, the second sub-pixels 210 of 3 colors can be used for displaying images, and the pixel area of the second sub-pixels 210 is larger than the pixel area of the first sub-pixels 110, so that the display brightness of the second display area 20 can be improved, and the condition of display unevenness caused by the fact that the pixel distribution density of the second display area 20 is smaller than the pixel distribution density of the first display area 10 is improved.
It should be further noted that, in the embodiment of the present invention, the arrangement manner of the second sub-pixels 210 in the second display area 20 is not limited, and for example, fig. 10 to fig. 12 are schematic partial structures of another display panel provided in the embodiment of the present invention, respectively, and exemplarily show several arrangement manners of the second sub-pixels 210, which can be referred to and set by those skilled in the art.
Fig. 13 is a schematic structural diagram of a display module according to an embodiment of the present invention, and referring to fig. 13, the display module 01 includes the display panel 100 according to any one of the embodiments, and further includes a driving chip 200, the driving chip 200 is connected to the first pixel electrode, the first common electrode, the second pixel electrode, and the second common electrode (not shown in fig. 13), and the driving chip 200 is configured to load a first driving voltage between the first pixel electrode and the first common electrode, and load a second driving voltage between the second pixel electrode and the second common electrode in a display stage of the display panel.
For example, referring to fig. 13, the driving chip 200 may be connected to the first pixel electrode, the first common electrode, the second pixel electrode, and the second common electrode through routing lines of the fan-out area 201 to independently apply a first driving voltage between the first pixel electrode and the first common electrode and apply a second driving voltage between the second pixel electrode and the second common electrode in the display stage.
For example, the functional relationship between the display gray scales and the driving voltages of different sub-pixels as shown in fig. 4 may be stored in the driving chip 200 at the same time, and the driving voltages corresponding to the target display gray scales are loaded to the corresponding sub-pixels according to the functional relationship, so as to improve the visual effect. It should be noted that the functional relationship shown in fig. 4 is only an illustration, but not a limitation, and a specific functional relationship curve needs to be obtained through testing.
Optionally, the driving chip 200 is configured to apply independent pixel voltages to the first pixel electrode and the second pixel electrode, and/or apply independent common voltages to the first common electrode and the second common electrode.
The driving chip 200 may implement independent loading of the first driving voltage and the second driving voltage by loading independent pixel voltages to the first pixel electrode and the second pixel electrode, and/or loading independent common voltages to the first common electrode and the second common electrode, which may be specifically referred to the description of the above display panel embodiment. For example, in the above-mentioned embodiment of the display panel, the first pixel voltage terminal, the second pixel voltage terminal, the first common voltage terminal, the second common voltage terminal, and the like may be output terminals of the driving chip 200 or terminals electrically connected to the driving chip 200.
Based on the same inventive concept, an embodiment of the present invention further provides a display device, and fig. 14 is a schematic structural diagram of a display device according to an embodiment of the present invention, where the display device 02 includes the display module 01 according to any of the embodiments, and thus includes the display panel 100 according to any of the embodiments, and has the same beneficial effects as the display panel, and reference may be made to the description of the display panel and the display module according to the embodiments, and details thereof are not repeated herein. The display device 02 provided by the embodiment of the present invention may be a mobile phone as shown in fig. 14, and may also be any electronic product having a display function and a front camera function, including but not limited to the following categories: a television, a notebook computer, a desktop display, a tablet computer, a digital camera, a medical device, an industrial control device, a touch interaction terminal, and the like, which are not particularly limited in this embodiment of the present invention.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (12)
1. A display panel is characterized by comprising a first display area and a second display area adjacent to the first display area, wherein the second display area is reused as a light sensing element arrangement area, the first display area comprises a plurality of first sub-pixels arranged in an array manner, the second display area comprises a plurality of second sub-pixels arranged in an array manner, and the pixel area of the first sub-pixels is smaller than that of the second sub-pixels;
the first sub-pixel comprises a first pixel electrode and a first common electrode, and the second sub-pixel comprises a second pixel electrode and a second common electrode;
in a display stage of the display panel, a first driving voltage is applied between the first pixel electrode and the first common electrode, a second driving voltage is applied between the second pixel electrode and the second common electrode, and the first driving voltage and the second driving voltage are independently applied.
2. The display panel according to claim 1, wherein in a display phase of the display panel, the first common electrode is electrically connected to the second common electrode, the first pixel electrode is electrically connected to a first pixel voltage terminal, the second pixel electrode is electrically connected to a second pixel voltage terminal, the first pixel voltage terminal is configured to apply a first pixel voltage to the first pixel electrode, and the second pixel voltage terminal is configured to apply a second pixel voltage to the second pixel electrode, so that the first driving voltage and the second driving voltage are independently applied.
3. The display panel according to claim 2, wherein the operating voltage of the first common electrode is x, and the operating voltage of the second common electrode is y;
in a display stage of the display panel, the voltages loaded by the first common electrode and the second common electrode are both x, and when the first sub-pixel and the second sub-pixel display the same gray scale, the first pixel voltage is a, and the second pixel voltage is a + (x-y).
4. The display panel according to claim 1, wherein the first pixel electrode and the second pixel electrode are loaded with the same pixel voltage when the first sub-pixel and the second sub-pixel display the same gray scale during a display phase of the display panel;
the first public electrode is electrically connected with the first public voltage end, the second public electrode is electrically connected with the second public voltage end, the first public voltage end is used for loading first public voltage for the first public electrode, and the second public voltage end is used for loading second public voltage for the second public electrode.
5. The display panel according to claim 4, wherein a first switch is provided between the first common voltage terminal and the first common electrode, and a second switch is provided between the second common voltage terminal and the second common electrode;
in a display stage of the display panel, the first switch and the second switch are both turned on, the first common voltage end loads a first common voltage to all the first common electrodes, and the second common voltage end loads a second common voltage to all the second common electrodes;
in a touch control stage of the display panel, the first switch and the second switch are both closed, and the first common electrode and the second common electrode are multiplexed as touch control electrodes.
6. The display panel according to claim 1, wherein the first common electrode and the second common electrode are electrically connected in a display phase of the display panel;
the display panel further comprises a plurality of data signal lines extending in a column direction;
in the first display area, the first pixel electrode of each column of the first sub-pixels is electrically connected with one data signal line;
in the second display area, the second pixel electrode of each column of the second sub-pixels is alternately connected to the two data signal lines on two sides of the column of the second sub-pixels.
7. The display panel according to claim 6, wherein the second pixel electrodes of the odd-numbered rows of the second subpixels are connected to the data signal lines on a first side of the second subpixels, and the second pixel electrodes of the even-numbered rows of the second subpixels are connected to the data signal lines on a second side of the second subpixels.
8. The display panel according to claim 6 or 7, wherein one of the two adjacent data signal lines is applied with a positive voltage, and the other data signal line is applied with a negative voltage;
wherein the positive voltage is greater than the common voltage of the first common electrode, and the negative voltage is less than the common voltage of the first common electrode.
9. The display panel according to claim 1, wherein the first sub-pixel comprises a red sub-pixel, a green sub-pixel, and a blue sub-pixel, and the second sub-pixel comprises a red sub-pixel, a green sub-pixel, and a blue sub-pixel;
the second display area further comprises a plurality of white sub-pixels, and the white sub-pixels are used for transmitting external light when the light sensing elements work.
10. A display module comprising the display panel of any one of claims 1 to 9, further comprising:
and the driving chip is used for loading a first driving voltage between the first pixel electrode and the first common electrode and loading a second driving voltage between the second pixel electrode and the second common electrode in a display stage of the display panel.
11. The display module of claim 10, wherein the driving chip is configured to apply independent pixel voltages to the first pixel electrode and the second pixel electrode, and/or apply independent common voltages to the first common electrode and the second common electrode.
12. A display device comprising the display module of claim 10 or 11.
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Application publication date: 20201218 |