CN109143645B - Display panel, driving method thereof and display device - Google Patents
Display panel, driving method thereof and display device Download PDFInfo
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- CN109143645B CN109143645B CN201811068154.9A CN201811068154A CN109143645B CN 109143645 B CN109143645 B CN 109143645B CN 201811068154 A CN201811068154 A CN 201811068154A CN 109143645 B CN109143645 B CN 109143645B
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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
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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
- G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
- G02F1/1362—Active matrix addressed cells
- G02F1/136286—Wiring, e.g. gate line, drain line
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
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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
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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
- G09G3/34—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 by control of light from an independent source
- G09G3/36—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 by control of light from an independent source using liquid crystals
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- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Theoretical Computer Science (AREA)
- Mathematical Physics (AREA)
- Optics & Photonics (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
The invention discloses a display panel, a driving method thereof and a display device, and relates to the technical field of display. In the embodiment of the invention, the through hole is arranged in the display panel and surrounded by the display area, so that functional devices such as a camera, a receiver and the like can be arranged in the through hole, the occupied area of the non-display area is reduced, the occupied area of the display area is increased, and the design of high screen occupation ratio and narrow frame is realized. In addition, due to the existence of the through holes, at least two sub-pixels in the first sub-pixel column are separated by the through holes, so that when the signal line electrically connected with the first sub-pixel column is the first signal line and at least part of the first signal line is directly and electrically connected with the control circuit, the interference between the first signal lines directly connected with the control circuit can be favorably reduced, and the display effect is improved.
Description
Technical Field
The invention relates to the technical field of display, in particular to a display panel, a driving method thereof and a display device.
Background
With the continuous development of display technology, display panels are widely applied to electronic devices such as mobile phones, tablet computers, information query machines in halls of public places, and the like, and bring convenience to the lives of people.
At present, the screen ratio becomes an important parameter for measuring the quality of the display panel. The larger the "screen occupation ratio" is, the smaller the frame of the display panel is, and the visual perception of the viewer can be improved. However, as the screen occupation ratio increases, a certain influence is inevitably generated on the display effect, and therefore, how to improve the display effect of the display panel with a high screen occupation ratio is a technical problem to be solved urgently by those skilled in the art.
Disclosure of Invention
The embodiment of the invention provides a display panel, a driving method thereof and a display device, which are used for improving the display effect of the display panel with a high screen occupation ratio.
In a first aspect, an embodiment of the present invention provides a display panel, including a display area, a non-display area surrounding the display area, and a through hole surrounded by the display area and penetrating through the display panel;
the display area comprises a plurality of sub-pixels, the sub-pixels arranged along the column direction form a sub-pixel column, and the sub-pixel columns are arranged along the row direction;
the sub-pixel columns comprise a plurality of first sub-pixel columns and a plurality of second sub-pixel columns, at least two sub-pixels in the first sub-pixel columns are spaced by the through holes, and the sub-pixels in the second sub-pixel columns are not spaced by the through holes;
the display panel also comprises a plurality of signal lines, wherein the signal lines correspond to the sub-pixel rows one by one and are electrically connected with the sub-pixels in the sub-pixel rows;
the non-display area comprises a control circuit and a plurality of multiplexers;
wherein the signal line includes a first signal line electrically connected to the first sub-pixel column and a second signal line electrically connected to the second sub-pixel column;
at least part of the first signal wires are directly and electrically connected with the control circuit, and at least part of the second signal wires are electrically connected with the control circuit through the multiplexer.
In a second aspect, an embodiment of the present invention further provides a driving method for a display panel, which is implemented by using the display panel provided in the embodiment of the present invention, and the driving method includes:
continuously providing a control signal to a first signal wire which is at least partially directly connected with the control circuit in a first time period;
and sequentially supplying control signals to a plurality of second signal lines connected to the same multiplexer in the first period.
In a third aspect, an embodiment of the present invention further provides a display device, including: the display panel provided by the embodiment of the invention.
The invention has the following beneficial effects:
according to the display panel, the driving method thereof and the display device provided by the embodiment of the invention, the through hole is formed in the display panel and surrounded by the display area, so that functional devices such as a camera, a receiver and the like can be arranged in the through hole, the occupied area of the non-display area is reduced, the occupied area of the display area is increased, and the design of high screen occupation ratio and narrow frame is realized.
In addition, due to the existence of the through holes, at least two sub-pixels in the first sub-pixel column are separated by the through holes, so that when the signal line electrically connected with the first sub-pixel column is the first signal line and at least part of the first signal line is directly and electrically connected with the control circuit, the interference between the first signal lines directly connected with the control circuit can be favorably reduced, and the display effect is improved.
Drawings
FIG. 1 is a schematic diagram of a display panel in the prior art;
fig. 2 to fig. 4 are schematic plan views of a display panel according to an embodiment of the invention;
fig. 5 is a schematic partial structural diagram of a relationship among a via, a signal line, a control circuit, and a multiplexer according to an embodiment of the present invention;
fig. 6 is a schematic partial structure diagram of a via and a signal line according to an embodiment of the present invention;
FIG. 7 is a schematic diagram of a partial structure of a multiplexer according to an embodiment of the present invention;
FIG. 8 is a timing diagram provided by an embodiment of the present invention;
fig. 9 is a cross-sectional view of a display panel according to an embodiment of the present invention;
fig. 10 is a schematic structural diagram of a display device according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the drawings, the relative positional relationship between the respective structures is merely described, but the actual dimensions of the respective structures are not shown.
As shown in fig. 1, fig. 1 is a schematic structural diagram of a display panel in the prior art, and the inventor has found in research that the display panel shown in fig. 1 includes: a display area A and a non-display area B surrounding the display area A, and a through hole T (such as a diagonal filled area) surrounded by the display area A and penetrating through the display panel; fig. 1 shows only one through hole T, and functional devices such as a camera and an earphone may be disposed in the through hole T.
Referring to fig. 1, the display area a includes three sub-pixels (e.g., a red sub-pixel R, a green sub-pixel G, and a blue sub-pixel B) having different colors and arranged in an array, and one sub-pixel column is connected to one data line 1, and one sub-pixel column is formed by sub-pixels of the same color (only some of the sub-pixels are shown in the figure). The non-display area B is generally provided with a multiplexer 2, an input end of the multiplexer 2 is connected to the driving chip 3, an output end of the multiplexer 2 is connected to the data line 1, and the multiplexer 2 is configured to sequentially output the data signals output by the driving chip 3 to the data lines 1 correspondingly connected to the sub-pixel columns with different colors, and simultaneously output the data signals to the data lines 1 correspondingly connected to the sub-pixel columns with the same color, so as to provide the data signals for the sub-pixels, thereby implementing the display function.
However, as shown in fig. 1, due to the existence of the via hole T, when the data line 1 is disposed, a part of the data line 1 needs to be disposed along the outer edge of the via hole T avoiding the location of the via hole T, such as the data lines marked as 1a and 1b, so that the distance between the data lines (such as 1a and 1b) disposed along the outer edge of the via hole T is small (as shown by d in fig. 1), when two adjacent data lines (such as 1a and 1b) sequentially input data signals, a large interference may occur between the data signals transmitted on the two adjacent data lines (such as 1a and 1b), that is, the data signal input later may interfere with the data signal input earlier, and the interference may easily cause the generation of vertical stripes in the screen during displaying, thereby affecting the displaying effect.
In order to solve the above problem, an embodiment of the invention provides a display panel to improve a display effect of the display panel having a through hole T.
Specifically, as shown in fig. 2 to 4, fig. 2 to 4 are schematic structural diagrams of display panels with three different structures provided in an embodiment of the present invention, and the display panel provided in an embodiment of the present invention may include: a display area a and a non-display area B surrounding the display area a, and a through hole (e.g., T or T1 or T2) surrounded by the display area a and penetrating the display panel. In an implementation, the position of the through hole (e.g., T or T1 or T2) may be set as required, and may be surrounded by the display area a and have the same distance from two edges of the display area a, that is, located at a middle position of the display area a (e.g., T shown in fig. 2), or surrounded by the display area a and have a closer distance from one edge of the display area a, that is, located near a top right corner of the display area a (e.g., T shown in fig. 3), or located near a top left corner of the display area a (not shown). The shape of the through hole (e.g., T or T1 or T2) is not limited in the embodiments of the present invention, and may be a circular hole (as shown in fig. 2 to 4), a U-shaped hole (not shown), a square hole (not shown), or the like. In addition, in the display panel, the number of through holes (e.g., T or T1 or T2) may be one (as shown in fig. 2 and 3), two (as shown in fig. 4), three (not shown), or more, and may be specifically set according to actual needs, which is not limited herein.
The display area a may include a plurality of sub-pixels (only some of the sub-pixels are shown in fig. 2 to 4) arranged in an array, the plurality of sub-pixels arranged in a column direction form a sub-pixel column, and the plurality of sub-pixel columns are arranged in a row direction. The sub-pixel columns include a plurality of first sub-pixel columns (such as the columns where the green sub-pixels G marked as P1 and P3 in fig. 2 are located) in which at least two sub-pixels are spaced by through holes, and a plurality of second sub-pixel columns (such as the columns where the red sub-pixels R marked as P2 in fig. 2 are located), in which the sub-pixels are not spaced by through holes.
For example, referring to fig. 2, the display panel includes a through hole T, and two green sub-pixels G respectively labeled as P1 and P3 are separated by the through hole T, so that columns of P1 and P3 are a first sub-pixel column, and a column of a red sub-pixel R labeled as P2 is a second sub-pixel column; referring to fig. 4, the display panel includes two through holes (labeled T1 and T2, respectively), and two green sub-pixels G labeled P1 and P3 are separated by the through hole T1, so that the columns of P1 and P3 are the first sub-pixel columns, and two blue sub-pixels B labeled P4 and P5 are separated by the through hole T2, so the columns of P4 and P5 are also the first sub-pixel columns.
The display panel may further include a plurality of signal lines 10, the signal lines 10 are in one-to-one correspondence with the sub-pixel rows and are electrically connected with each sub-pixel in the sub-pixel rows, and one row of sub-pixels is correspondingly connected with one signal line 10; in order to clearly illustrate the relative positions between the structures, only a part of the signal lines are shown in fig. 2 to 4, and each signal line is only partially shown.
Referring to fig. 2 to 4, the non-display area B may include a control circuit 20 and a number of multiplexers 30. Wherein, the signal line 10 may include a first signal line 11 electrically connected to the first subpixel column and a second signal line 12 electrically connected to the second subpixel column; specifically, for the first signal lines, at least a portion of the first signal lines have bent portions (portions indicated by dashed ellipses in fig. 2 to 4), such as the first signal lines labeled 11, while for the second signal lines, all of the second signal lines extend in straight lines without bent portions, such as the second signal lines labeled 12.
At least a part of the first signal lines 11 are electrically connected to the control circuit 20 directly, and at least a part of the second signal lines 12 are electrically connected to the control circuit 20 through the multiplexer 30.
Note that, for the first signal line, it is possible to set: all of the first signal lines 11 are electrically connected directly to the control circuit 20 (as shown in fig. 2 and 3), or a part of the first signal lines 11 are electrically connected directly to the control circuit 20, and the remaining part of the first signal lines are electrically connected to the control circuit 20 through the multiplexer 30 (as shown in fig. 4, the first signal lines labeled W1, W2, W3, and W4).
For the second signal line, it may be set that: all the second signal lines 12 are electrically connected to the control circuit 20 through the multiplexer 30, as shown in fig. 2 and 4; alternatively, some of the second signal lines are electrically connected to the control circuit 20 through the multiplexer 30, and the remaining second signal lines (e.g., 12a in fig. 3) are directly electrically connected to the control circuit 20.
Also, in the first period, the control circuit 20 supplies control signals to the plurality of signal lines 10, respectively; among them, the plurality of first signal lines 11 directly connected to the control circuit 20 continuously receive the control signals at the same time during the first period, and the plurality of second signal lines 12 connected to the same multiplexer 30 sequentially receive the control signals during the first period.
Therefore, for the first signal lines 11 directly electrically connected to the control circuit 20, the control circuit 20 can directly input the control signals to these first signal lines 11 without the adjustment of the multiplexer 30, that is, the first signal lines 11 directly electrically connected to the control circuit 20 can simultaneously input the control signals, that is, the first signal lines 11 are always in the state directly controlled by the signals input by the control circuit 20 during the first time period, and can receive the continuous control signals without the floating state; thus, the occupied area of the traces in the non-display area can be reduced by providing the multiplexer 30, the output terminals (e.g., the pins of the IC) of the control circuit 20 can be reduced, and the narrow bezel can be realized. Meanwhile, even if the distance between two adjacent first signal lines 11 is smaller due to the existence of the through hole T, the interference between the two adjacent first signal lines (especially between the two adjacent first signal lines) and the adjacent signal lines can be reduced, so that the display effect is improved, the interference caused by signals on other signal lines in a period when the first signal line 11 does not receive the control signal can be effectively avoided, and the interference caused by the signal change on the first signal line 11 to other adjacent signal lines in the first period can also be avoided.
In specific implementation, due to the existence of the through hole T, when the signal line 10 extends along the column direction, in order to avoid the disconnection of the first signal line 11, so as to ensure the normal transmission of the signal on the first signal line 11, in the embodiment of the present invention, reference is made to the partial schematic diagrams shown in fig. 5 and 6, where fig. 5 is a partial schematic structural diagram of a relationship among the through hole, the signal line, the control circuit, and the multiplexer provided in the embodiment of the present invention, and fig. 6 is a partial schematic structural diagram of the through hole and the signal line provided in the embodiment of the present invention; specifically, the first signal line 11 may include a first sub-section 11a and a second sub-section 11b respectively located at both sides of the through hole T in the column direction (e.g., Y direction in fig. 5 and 6), and a connecting sub-section 11c connected between the first sub-section 11a and the second sub-section 11 b; the connection sub-segment 11c extends along the extending direction of the edge of the through hole T, so that the control signal can be transmitted to each sub-pixel correspondingly connected with the first signal line 11 through the first signal line 11, thereby ensuring the normal operation of the display panel.
Of course, the orthographic projection pattern of the connection sub-segment 11c on the display panel may be an arc (as shown in fig. 5), a step (as shown in fig. 6), or other shapes, which are not limited herein.
In particular, since the connecting subsegments 11c extend in the extension direction of the edge of the through hole T, the distance d1 between two adjacent connecting subsegments 11c is much smaller than the distance d2 between two adjacent first subsegments 11a, as shown in fig. 6; therefore, in the case where all the first signal lines 11 are directly and electrically connected to the control circuit 20, since all the first signal lines 11 are simultaneously supplied with the control signal, interference between the first signal lines 11 is small even if d1 is much smaller than d 2; for the case that part of the first signal lines 11 are directly electrically connected to the control circuit 20, it is necessary to determine which part of the first signal lines are directly electrically connected to the control circuit 20 according to the distance between two adjacent connection subsections 11c, and the specific determination manner may include the following manners:
optionally, the inventor finds in research that, when the wiring is arranged, distances between adjacent connecting subsections 11c are different at different positions, and tests show that, if control signals are sequentially input to two adjacent connecting subsections 11c, when a minimum distance d1 between two adjacent connecting subsections 11c is 4 to 6 micrometers, that is, when d1 takes a value between [4 and 6], a control signal input later will generate a large interference to a control signal input earlier, thereby affecting normal display of the display panel; whereas, when the minimum distance d1 is greater than 6 μm, the control signal input at the rear has less interference with the control signal input at the front due to the greater spacing.
Based on this, if the first signal lines to which the two adjacent connection subsections with the minimum distance d1 between 4 micrometers and 6 micrometers belong are directly connected with the control circuit 20, the two first signal lines simultaneously input control signals, and at this time, the interference of the control signal input later to the control signal input earlier is small, so in the embodiment of the present invention, for the connection subsections 11c in the first signal lines directly electrically connected with the control circuit 20, the minimum distance d1 between the adjacent connection subsections 11c may be set between 4 micrometers and 6 micrometers, thereby ensuring the normal display of the display panel; in addition, the distance between the first signal lines 11 can be reduced, and the occupied area of the wiring around the through hole T can be reduced, so that the display effect around the through hole T can be prevented from being adversely affected.
Alternatively, in addition to the above, it may be determined which part of the first signal line is directly electrically connected to the control circuit 20 in the following manner.
Specifically, in the embodiment of the present invention, referring to fig. 5, the plurality of first signal lines include a plurality of first a signal lines and a plurality of first b signal lines, a distance between a connection sub-segment of a first a signal line and a connection sub-segment in another adjacent first signal line is a first distance L1, a distance between a connection sub-segment of a first b signal line and a connection sub-segment in another adjacent first signal line is a second distance L2, where the first distance L1 is greater than the second distance L2 (as shown in fig. 5); among them, the first a signal lines (e.g., m1 and m2) are electrically connected to the control circuit 20 through the multiplexer 30, and the first b signal lines (e.g., n1 and n2) are electrically connected directly to the control circuit 20.
Wherein, the first distance L1 may be a minimum distance between the connection sub-segment 11c of the first a signal line (e.g., m1 or m2) and the connection sub-segment 11c in the other adjacent first signal lines 11, and the second distance L2 may be a minimum distance between the connection sub-segment 11c of the first b signal line (e.g., n1 or n2) and the connection sub-segment 11c in the other adjacent first signal lines 11; since the first a signal line (e.g., m1 or m2) is electrically connected to the control circuit 20 through the multiplexer 30, the first distance L1 may be set to be greater than 6 micrometers in order to avoid a large signal interference; also, since the first b signal line (e.g., n1 or n2) is directly electrically connected to the control circuit 20, in order to prevent the wiring from being too dense to reduce the manufacturing difficulty, the second distance L2 may be set to be greater than 2 micrometers, and preferably, the second distance L2 may be set to be greater than 4 micrometers.
Therefore, by setting the first signal line (e.g., m1 or m2) to be electrically connected to the control circuit 20 through the multiplexer 30, the number of wires in the non-display area B can be effectively reduced to reduce the occupied area of the wires in the non-display area B, and the output terminal (e.g., the pin of the IC) of the control circuit 20 can also be reduced to realize the design of a narrow bezel. Meanwhile, the first b signal line (e.g., n1 or n2) is directly electrically connected to the control circuit 20, so that the occupied area of the wiring around the through hole T can be reduced, and the display effect around the through hole T can be prevented from being adversely affected; therefore, the display panel provided by the embodiment of the invention can effectively avoid mutual interference between the first signal lines around the through hole T, can further realize the design of the narrow frame, and greatly improves the display effect of the display panel.
Further, in the embodiment of the present invention, the connection sub-segment 11c of the first a signal line (e.g., m1 or m2) may be located at a side of the connection sub-segment 11c of the first b signal line (e.g., n1 or n2) away from the through hole T, as shown in fig. 5, n1 and n2 are closer to the through hole T than m1 and m 2; so, be favorable to wiring setting around through-hole T, be favorable to reducing the preparation degree of difficulty.
In addition, the first second signal lines are more densely arranged compared with the first signal lines, so that the reduction of the aperture opening ratio caused by blocking pixels when the first second signal lines are arranged on one side of the first signal lines far away from the through holes T can be avoided, and the display brightness of the display panel is prevented from being influenced; in addition, the first A signal line with sparser wiring is arranged on one side, away from the through hole T, of the first B signal line, so that the situation that the connecting subsegment of the first B signal line occupies a larger area and the length of the connecting subsegment of the first B signal line is increased can be avoided, and the area occupied by the wiring around the through hole T is reduced. The connecting subsections of the adjacent first signal lines close to the through holes T can be arranged densely, the situation that the connecting subsections of the adjacent first signal lines far away from the through holes T need to surround a larger area to avoid the first signal lines close to the holes is avoided, and therefore the area occupied by wiring around the through holes T is reduced.
It should be noted that, for at least a part of the second signal lines 12 electrically connected to the control circuit 20 through the multiplexer 30, since the second signal lines 12 are correspondingly connected to the second sub-pixel column, and the sub-pixels in the second sub-pixel column are not separated by the through holes T, the second signal lines 12 generally do not extend along the extending direction of the edges of the through holes T, but extend along the column direction, so the pitch between the second signal lines 12 is a normal pitch, and even when all the second signal lines 12 are electrically connected to the control circuit 20 through the multiplexer 30, the interference between the second signal lines 12 is small. Therefore, in the case where some of the second signal lines 12 are electrically connected to the control circuit 20 through the multiplexer 30, the second signal lines 12 can be arbitrarily selected without considering the problem of the pitch as in the case of the first signal lines 11.
In specific implementation, in an embodiment of the present invention, referring to fig. 2 and 4, the plurality of sub-pixels may include: a red sub-pixel R, a blue sub-pixel B and a green sub-pixel G; the sub-pixels of the same color are located in the same sub-pixel column. Therefore, when the sub-pixels are manufactured, the manufacturing is convenient, the manufacturing difficulty is reduced, and the control of each sub-pixel is facilitated during driving, so that the display function is realized.
It should be noted that although only one sub-pixel is shown in each column in fig. 2 to 4, the color of the sub-pixel represents the color of the sub-pixel in the column. For example, the sub-pixel labeled P2 is a red sub-pixel R, and it is indicated that the sub-pixel column in which P2 is located includes only the red sub-pixel R.
Moreover, in order to realize the display function, the sub-pixel columns with different colors need to be alternately and circularly arranged in sequence, that is, as shown in fig. 2 and fig. 4, the red sub-pixel column, the green sub-pixel column, and the blue sub-pixel column form a minimum arrangement period, and in the display panel, the arrangement periods are arranged in sequence, and the arrangement manner of the red sub-pixel column, the green sub-pixel column, and the blue sub-pixel column in each arrangement period is completely the same.
Of course, the colors of the sub-pixels included in the display panel are not limited to three, but may be four (as shown in fig. 3); if the number of the sub-pixels is four, the colors of the sub-pixels are red, green, blue and white respectively, so that the image can be displayed better and a user can watch the image displayed in the display panel conveniently.
In addition, in the embodiment of the present invention, when the multiplexer 30 is provided, the signal lines 10 of at least three adjacent sub-pixel columns of different colors are connected to the same multiplexer 30. Thus, the control signals can be sequentially input to the signal lines 10 correspondingly connected to the sub-pixel columns with different colors by the time-sharing output function of the multiplexer 30; meanwhile, the wiring number of the non-display area B can be reduced, the occupied area of the non-display area B is reduced, and the design of a narrow frame is facilitated.
For example, referring to fig. 2, six consecutive second signal lines 12 from left are connected to the multiplexer 30, and the six second signal lines 12 are correspondingly connected to the red sub-pixel column, the green sub-pixel column, and the blue sub-pixel column, respectively; when the six columns of sub-pixels correspondingly connected with the six second signal lines 12 are numbered as R1, G1, B1, R2, G2 and B2 from left to right, signals can be simultaneously input to the second signal lines 12 correspondingly connected with R1 and R2 at first, then signals can be simultaneously input to the second signal lines 12 correspondingly connected with G1 and G2, and finally signals can be simultaneously input to the second signal lines 12 correspondingly connected with B1 and B2 by the action of the multiplexer 30; alternatively, signals are simultaneously input to the second signal lines 12 connected correspondingly to G1 and G2 first, then signals are simultaneously input to the second signal lines 12 connected correspondingly to B1 and B2, and finally signals are simultaneously input to the second signal lines 12 connected correspondingly to R1 and R2; alternatively, signals are simultaneously input to the second signal lines 12 connected to the respective lines B1 and B2, then signals are simultaneously input to the second signal lines 12 connected to the respective lines R1 and R2, and finally signals are simultaneously input to the second signal lines 12 connected to the respective lines G1 and G2.
Of course, the above only illustrates the case where 6 second signal lines 12 are connected to the same multiplexer 30, and in actual operation, 3, or 9, or more second signal lines 12 may be connected to the same multiplexer 30; it should be noted that, if the display panel includes three different color sub-pixels (as shown in fig. 2 and 4), the number of signal lines (including the second signal line and the first signal line) connected to the same multiplexer 30 needs to be an integer multiple of 3, and if the display panel includes four different color sub-pixels (as shown in fig. 3), the number of signal lines (including the second signal line and the first signal line) connected to the same multiplexer 30 needs to be an integer multiple of 4.
In addition, it should be noted that, referring to fig. 7, where fig. 7 is a schematic diagram of a partial structure of the multiplexer 30 according to an embodiment of the present invention, an output terminal of the multiplexer 30 is connected to signal lines (e.g., VR, VG, VB), an input terminal is connected to an output terminal (e.g., source _ m) of the control circuit 20, and a control terminal is also connected to control output terminals (e.g., CKR, CKG, and CKB) of the control circuit 20; the number of the input terminals is related to the arrangement of the sub-pixels, and specifically includes: if the display panel includes three different color sub-pixels, the number of input terminals is one third of the number of output terminals, as shown in fig. 2 and 4, and fig. 7; if the display panel includes four sub-pixels with different colors, the number of the input terminals is one fourth of the number of the output terminals, as shown in fig. 3.
The number of control terminals is also related to the arrangement of the sub-pixels, and if the display panel includes three sub-pixels with different colors, the number of control terminals is also three, as shown in fig. 7, and if the display panel includes four sub-pixels with different colors, the number of control terminals is four (not shown).
Specifically, as for the specific structure of the multiplexer 30, any structure known in the art that can implement the function of the multiplexer 30 may be adopted, and is not limited herein.
In practical implementation, the signal line 10 (including the first signal line 11 and the second signal line 12) mentioned in the embodiment of the present invention may be a data line for providing a driving signal to a pixel electrode of a connected sub-pixel, and a control signal transmitted on the signal line 10 is a data signal. That is, as for the data lines directly connected to the control circuit 20, the control circuit 20 directly inputs data signals thereto, so that the data lines simultaneously input data signals; for the data lines connected to the control circuit 20 through the multiplexer 30, the control circuit 20 first inputs the data signals to the multiplexer 30, and sequentially outputs the data signals to the data lines connected to the sub-pixels having different colors through the time-sharing output function of the multiplexer 30, thereby implementing the display function.
It should be noted that the control circuit 20 mentioned in the embodiment of the present invention may be a driving chip, and the driving chip may provide various signals for display for the display panel, and the output control of the various signals may be implemented by software, so that the display effect of the display panel may be adjusted without changing the structure of the display panel, thereby improving the display effect of the display panel.
Based on the same inventive concept, an embodiment of the present invention further provides a driving method of a display panel, which is implemented by using the display panel provided in the embodiment of the present invention, and the driving method includes:
step one, continuously providing control signals to a first signal wire which is at least partially directly connected with a control circuit in a first time period;
when the progressive scanning mode is adopted, the first time period may be specifically a time for scanning a row of sub-pixel rows, and in the first time period, the control signal is continuously and simultaneously provided to the first signal lines directly electrically connected to the control circuit, so that signal interference caused by a small minimum distance between the first signal lines can be avoided.
And step two, in the first time period, sequentially providing control signals to a plurality of second signal lines connected to the same multiplexer.
The step one and the step two are executed in parallel, and the execution sequence is not limited.
Specifically, with reference to the schematic structure diagram shown in fig. 7 and the timing diagram shown in fig. 8, in the embodiment of the present invention, gout in fig. 8 represents the gate scan signal. For the second signal lines (labeled VR, VG, and VB) electrically connected to the control circuit 20 through the multiplexer 30, during the first period, one output source _ m of the control circuit 20 inputs signals to the input terminal of the multiplexer 30, and three control terminals of the multiplexer 30 control the signals to be sequentially input to VR, VG, and VB after receiving the turn-on signal provided by the control output terminals (e.g., CKR, CKG, and CKB) of the control circuit 20, so that VR, VG, and VB input signals to the corresponding connected sub-pixels.
Referring to the timing diagram shown in fig. 8, for the first signal line directly electrically connected to the control circuit, the three output terminals (source r _ n, source g _ n, and source b _ n) of the control circuit directly input signals into the three first signal lines, respectively, so that the three first signal lines input signals into the corresponding sub-pixels.
In order to ensure the display quality of the display panel, when the display panel is a liquid crystal display panel, the display panel generally adopts a column inversion or dot inversion driving method, that is, the polarities of the data signals input to the adjacent sub-pixels are opposite.
Specifically, as shown in fig. 8, the data signal output from source _ m of the control circuit is input to the corresponding signal line after passing through the multiplexer, and then is input to the red sub-pixel R, the green sub-pixel G, and the blue sub-pixel B through the signal line; when the driving method is a column inversion or dot inversion driving method, for the red sub-pixel R, the green sub-pixel G and the blue sub-pixel B which are adjacently arranged, if the data signal input to the red sub-pixel R is positive polarity, the data signal input to the green sub-pixel G is negative polarity, and the data signal input to the blue sub-pixel B is positive polarity, so as to improve the display effect of the display panel.
Similarly, for the sub-pixels directly connected to the first signal line connected to the control circuit, it is also necessary to ensure that the polarities of the data signals input to the adjacent sub-pixels are opposite to each other, so as to improve the display effect of the display panel.
Based on the same inventive concept, an embodiment of the present invention further provides a display device, as shown in fig. 10, where fig. 10 is a schematic structural diagram of the display device provided in the embodiment of the present invention, and the display device may include: the display panel 50 according to the embodiment of the present invention is provided, wherein the display panel 50 is exemplarily shown to have three through holes T, but in practical cases, the display panel is not limited to three through holes T.
Specifically, in the embodiment of the present invention, the display panel 50 may be a liquid crystal display panel, and the specific structure may be a cross-sectional view of the display panel as shown in fig. 9, which includes: an array substrate 51, an opposite substrate 52 opposite to the array substrate 51, and a liquid crystal 53 between the array substrate 51 and the opposite substrate 52.
In specific implementation, in the embodiment of the present invention, the display device may be: any product or component with a display function, such as a mobile phone (as shown in fig. 10), a tablet computer, a television, a display, a notebook computer, a digital photo frame, and a navigator. The display device can be implemented by referring to the above embodiments of the display panel, and repeated descriptions are omitted.
Alternatively, in the embodiment of the present invention, the display apparatus may include several functional devices, a projection of which in a direction perpendicular to the display panel overlaps with the through hole T, that is, the functional devices are disposed within the through hole T; in addition, only one functional device may be disposed in one through hole T, or a plurality of functional devices may be disposed in one through hole T, which is not limited herein.
Because the functional device is arranged in the through hole T, compared with the structure that the functional device is arranged in the non-display area, the display device provided by the embodiment of the invention can be provided with the ultra-narrow frame, and further the screen occupation ratio can be increased, thereby realizing the design of high screen occupation ratio and narrow frame.
In an embodiment of the present invention, the functional device may include: one or more of a sensor, an inductor, a camera, an earphone and a loudspeaker. Of course, the functional device is not limited to this, and may be a structure for realizing other specific functions.
The embodiment of the invention provides a display panel, a driving method thereof and a display device, wherein a through hole is formed in the display panel and is surrounded by a display area, so that functional devices such as a camera, a receiver and the like can be arranged in the through hole, the occupied area of a non-display area is reduced, the occupied area of the display area is increased, and the design of high screen occupation ratio and narrow frame is realized. In addition, due to the existence of the through holes, at least two sub-pixels in the first sub-pixel column are separated by the through holes, so that when the signal line electrically connected with the first sub-pixel column is the first signal line and at least part of the first signal line is directly and electrically connected with the control circuit, the interference between the first signal lines directly connected with the control circuit can be favorably reduced, and the display effect is improved.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (13)
1. A display panel comprises a display area, a non-display area surrounding the display area, and a through hole surrounded by the display area and penetrating through the display panel;
the display area comprises a plurality of sub-pixels, the sub-pixels arranged along the column direction form a sub-pixel column, and the sub-pixel columns are arranged along the row direction;
the sub-pixel columns comprise a plurality of first sub-pixel columns and a plurality of second sub-pixel columns, at least two sub-pixels in the first sub-pixel columns are spaced by the through holes, and the sub-pixels in the second sub-pixel columns are not spaced by the through holes;
the display panel also comprises a plurality of signal lines, wherein the signal lines correspond to the sub-pixel rows one by one and are electrically connected with the sub-pixels in the sub-pixel rows;
wherein the signal line includes a first signal line electrically connected to the first sub-pixel column and a second signal line electrically connected to the second sub-pixel column;
the display device is characterized in that the non-display area comprises a control circuit and a plurality of multiplexers;
at least part of the first signal wires are directly and electrically connected with the control circuit, and at least part of the second signal wires are electrically connected with the control circuit through the multiplexer.
2. The display panel according to claim 1,
in a first time period, the control circuit provides control signals to the signal lines respectively;
a plurality of first signal lines directly connected with the control circuit continuously receive the control signals at the same time in the first time period;
a plurality of second signal lines connected to the same multiplexer sequentially receive the control signal in the first period.
3. The display panel according to claim 1, wherein the signal line is a data line for supplying a driving signal to a pixel electrode of a connected sub-pixel.
4. The display panel according to claim 1, wherein the first signal line includes a first sub-section and a second sub-section respectively located at two sides of the through hole in a column direction, and a connection sub-section connected between the first sub-section and the second sub-section, and the connection sub-section extends along an extending direction of an edge of the through hole.
5. The display panel according to claim 4, wherein for a connection sub-segment in a first signal line directly electrically connected to the control circuit, a minimum distance between adjacent connection sub-segments is 4 to 6 micrometers.
6. The display panel according to claim 4, wherein the plurality of first signal lines include a plurality of first A signal lines and a plurality of first B signal lines, a distance between a connection sub-segment of the first A signal line and a connection sub-segment of another adjacent first signal line is a first distance, and a distance between a connection sub-segment of the first B signal line and a connection sub-segment of another adjacent first signal line is a second distance, wherein the first distance is greater than the second distance;
the first signal line A is electrically connected with the control circuit through the multiplexer, and the first signal line B is directly electrically connected with the control circuit.
7. The display panel according to claim 6, wherein the connection sub-section of the first A signal line is located on a side of the connection sub-section of the first B signal line away from the through hole.
8. The display panel according to claim 1, wherein the plurality of sub-pixels comprise: red, blue, green sub-pixels;
the sub-pixels of the same color are located in the same sub-pixel column.
9. The display panel according to claim 1, wherein the sub-pixel columns of different colors are alternately arranged in a cycle in sequence, and the signal lines of at least three adjacent sub-pixel columns of different colors are connected to the same multiplexer.
10. A driving method of a display panel, implemented with a display panel according to any one of claims 1 to 9, the driving method comprising:
continuously providing a control signal to a first signal wire which is at least partially directly connected with the control circuit in a first time period;
and sequentially supplying control signals to a plurality of second signal lines connected to the same multiplexer in the first period.
11. A display device, comprising:
the display panel according to any one of claims 1 to 9.
12. A display device as claimed in claim 11, characterized in that the display device comprises several functional components, the projections of which in a direction perpendicular to the display panel overlap the through holes.
13. The display device according to claim 12,
the functional device includes: one or more of a sensor, an inductor, a camera, an earphone and a loudspeaker.
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| CN109767692B (en) * | 2019-01-09 | 2022-03-08 | 昆山国显光电有限公司 | Display panel |
| JP7248458B2 (en) * | 2019-03-08 | 2023-03-29 | 株式会社ジャパンディスプレイ | Display device |
| CN109765737B (en) * | 2019-03-20 | 2021-07-02 | 厦门天马微电子有限公司 | Array substrate and display device |
| CN109981855A (en) * | 2019-04-26 | 2019-07-05 | 武汉华星光电技术有限公司 | Display device |
| CN110047386B (en) * | 2019-04-30 | 2021-12-31 | 武汉天马微电子有限公司 | Display device and electronic equipment |
| CN110211972B (en) * | 2019-05-23 | 2021-02-02 | 武汉华星光电半导体显示技术有限公司 | Array substrate and display device |
| CN110288943B (en) * | 2019-07-08 | 2020-10-16 | 武汉华星光电半导体显示技术有限公司 | Display panel and display device |
| CN110610667B (en) * | 2019-10-28 | 2022-01-14 | 武汉天马微电子有限公司 | Display panel and display device |
| CN110969943A (en) * | 2019-11-27 | 2020-04-07 | 厦门天马微电子有限公司 | Display panel and display device |
| CN110969935B (en) | 2019-12-20 | 2022-02-22 | 京东方科技集团股份有限公司 | Array substrate and display device |
| CN111710240A (en) * | 2020-06-24 | 2020-09-25 | 昆山国显光电有限公司 | Pixel circuit structure and display panel |
| CN111710243A (en) * | 2020-06-30 | 2020-09-25 | 上海中航光电子有限公司 | Display device |
| US11404530B2 (en) | 2020-06-30 | 2022-08-02 | Chengdu Boe Optoelectronics Technology Co., Ltd. | Display substrate and display device |
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