CN115547272A - Display panel and display device - Google Patents

Display panel and display device Download PDF

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Publication number
CN115547272A
CN115547272A CN202211342088.6A CN202211342088A CN115547272A CN 115547272 A CN115547272 A CN 115547272A CN 202211342088 A CN202211342088 A CN 202211342088A CN 115547272 A CN115547272 A CN 115547272A
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China
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sub
display
pixels
edge
pixel
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Granted
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CN202211342088.6A
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Chinese (zh)
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CN115547272B (en
Inventor
王洁
沈婷婷
刘运阳
张光晨
李志威
吕立
郑浩旋
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HKC Co Ltd
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HKC Co Ltd
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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
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
    • G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
    • G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
    • G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2300/00—Aspects of the constitution of display devices
    • G09G2300/04—Structural and physical details of display devices
    • G09G2300/0439—Pixel structures
    • G09G2300/0443—Pixel structures with several sub-pixels for the same colour in a pixel, not specifically used to display gradations
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/02—Improving the quality of display appearance
    • G09G2320/0233—Improving the luminance or brightness uniformity across the screen

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

The application provides a display panel and a display device. The display panel comprises edge data lines positioned at two opposite edges of a plurality of display sub-pixels and a middle data line arranged between two adjacent rows of display sub-pixels; the middle data line is connected with the display sub-pixels positioned in the odd-numbered rows in the display sub-pixels in one column adjacent to the middle data line and connected with the display sub-pixels positioned in the even-numbered rows in the display sub-pixels in the other column adjacent to the middle data line, and the edge data line is connected with the second sub-pixels in the display sub-pixels in the adjacent column; the display sub-pixel columns adjacent to the edge data lines are defined as edge columns, and the rest display sub-pixel columns are defined as middle columns; the display panel also comprises a light modulation structure which is at least matched with the display sub-pixels positioned in the edge column, so that the display brightness of the edge column and the display brightness of the middle column meet the requirement of brightness uniformity. The technical scheme of the application can reduce the brightness of the edge area of the image display, so that the brightness of the whole display panel is more uniform.

Description

Display panel and display device
Technical Field
The present disclosure relates to display technologies, and particularly to a display panel and a display device.
Background
At present, a Thin Film Transistor (TFT) is generally provided in a display panel, and picture display is realized by turning on or off a TFT switch. In this case, only one side of the data signal lines at the edge positions of the screen display is alternately connected to the TFT switches, and the left and right sides of the middle data signal line are alternately connected to the TFT switches, so that the number of TFT switches connected to the data signal lines at the edge positions is reduced, and the load is reduced. This causes the edge area of the screen display to be bright and the brightness of the entire display panel to be uneven.
Disclosure of Invention
An object of the present application is to provide a display panel and a display device, which can effectively reduce the brightness of the edge region of the image display, so that the brightness of the whole display panel is more uniform.
According to an aspect of the present disclosure, a display panel is provided, where the display panel includes a plurality of display sub-pixels arranged in a display area in an array, and the display panel further includes edge data lines at two opposite edges of the plurality of display sub-pixels, and a middle data line between two adjacent rows of the display sub-pixels;
the plurality of display sub-pixels comprise first sub-pixels connected with the middle data line and second sub-pixels connected with the edge data line, the middle data line is connected with one first sub-pixel in the row direction, and the first sub-pixels are alternately distributed on two sides of the middle data line in the column direction;
the second sub-pixels are arranged on the same side of the edge data line and are distributed at intervals with the adjacent first sub-pixels in the column direction;
the display panel further comprises a dimming structure, and the dimming structure is at least matched with the second sub-pixel to enable the display brightness of the second sub-pixel and the display brightness of the first sub-pixel to meet the requirement of brightness uniformity.
In one aspect, the dimming structure includes at least one row of energy consuming units, and the energy consuming units are located in a non-display area of the display panel and connected to the edge data lines, so that a load on the edge data lines is equal to a load on the middle data lines.
In one aspect, a column of the energy consumption units is arranged on one side of each edge data line far away from the middle data line, and each energy consumption unit comprises a plurality of dummy sub-pixels arranged at intervals.
In one aspect, the dummy sub-pixels are equally spaced in the non-display area.
In one aspect, the portions of the edge data lines between the adjacent second sub-pixels are connected to the dummy sub-pixels of the energy consumption units adjacent to the edge data lines in a one-to-one correspondence.
In one aspect, the dummy sub-pixel has the same structure as the display sub-pixel.
In one aspect, when the second sub-pixel is a blue-light display sub-pixel, the number of the second sub-pixels is defined as N1, and the number of the dummy sub-pixels is defined as N2, then: n2 is less than N1.
In one aspect, the light-adjusting structure comprises a light-shielding layer, and the pixel opening area of each display sub-pixel is the same; wherein,
and the part of the pixel opening area of the display sub-pixels in the edge column is covered by the shading layer, so that the actual light-transmitting area of the display sub-pixels in the edge column is smaller than the actual light-transmitting area of the display sub-pixels in the middle column.
In one aspect, defining the area of the pixel opening area of the display sub-pixel as S1, and defining the area of the portion of the display sub-pixel covered by the light shielding layer as S2, satisfies: S2/S1 is more than or equal to 1/3 and less than or equal to 1/2.
In one aspect, in the edge column, the areas of the display sub-pixels shielded by the light shielding layer are the same.
In one aspect, in the edge column, the areas of at least two display sub-pixels shielded by the light shielding layer are different.
In one aspect, the dimming structure comprises a plurality of driving chips, wherein the plurality of driving chips comprise independently controlled edge driving chips and intermediate driving chips, the edge driving chips are connected with at least the edge data lines, and the intermediate driving chips are connected with the intermediate data lines;
the display panel further comprises a middle photosensitive layer and an edge photosensitive layer, the dimming structure comprises a first control unit and a second control unit, the middle photosensitive layer is arranged on a light-emitting surface of the first sub-pixel, the edge photosensitive layer is arranged on a light-emitting surface of the second sub-pixel, the middle photosensitive layer is connected with the first control unit, the middle photosensitive layer is used for transmitting a detected first photosensitive signal to the first control unit, the edge photosensitive layer is connected with the second control unit, the edge photosensitive layer is used for transmitting a detected second photosensitive signal to the second control unit, the first control unit is connected with the middle driving chip, and the second control unit is connected with the edge driving chip;
the first control unit is used for controlling the data voltage input by the middle driving chip to the middle data line according to the first photosensitive signal, and the second control unit is used for controlling the data voltage input by the edge driving chip to the edge data line according to the second photosensitive signal.
In addition, in order to solve the above problem, the present application further provides a display device, which includes a liquid crystal display panel and a backlight module, wherein the liquid crystal display panel is disposed on the light emitting side of the backlight module, and the liquid crystal display panel is the display panel as described above.
In the technical scheme of this application, structure and the second sub-pixel cooperation of adjusting luminance sets up, can adjust the display brightness of second sub-pixel through adjusting luminance the structure. The display brightness of the second sub-pixel and the display brightness of the first sub-pixel meet the requirement of uniformity, and therefore the brightness of the whole display panel is more uniform.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.
Drawings
The above and other objects, features and advantages of the present application will become more apparent by describing in detail exemplary embodiments thereof with reference to the attached drawings.
Fig. 1 is a schematic diagram of a position structure of an energy consumption unit of a dimming structure in a first embodiment of the present application.
Fig. 2 is a schematic diagram of the position structure of the dummy sub-pixel equalization arrangement of the dimming structure in the present application.
Fig. 3 is a schematic structural diagram of a corner position of a dummy sub-pixel of the dimming structure in the non-display area in the present application.
Fig. 4 is a schematic structural diagram of a conventional black matrix layer in the present application.
Fig. 5 is a schematic structural diagram of a light shielding layer of a light modulation structure in a first embodiment of the present application.
Fig. 6 is a schematic structural diagram of the irregular arrangement of the light-shielding layers of the light-adjusting structure in the first embodiment of the present application.
Fig. 7 is a schematic structural diagram of a driving chip in the first embodiment of the present application.
Fig. 8 is a schematic view of a structure in which a photosensitive layer is provided in the first embodiment in this application.
Fig. 9 is a schematic view showing a position structure of the photosensitive layer in fig. 7.
FIG. 10 is a timing control diagram of the display panel of the present application.
Fig. 11 is a schematic structural diagram of a display device according to a second embodiment of the present application.
The reference numerals are explained below:
10. a display panel; 20. a backlight module;
110. a display area; 120. a non-display area; 130. an edge data line; 140. a middle data line; 150. an edge drive chip; 170. an intermediate driver chip; 180. scanning a line; 190. a TFT; 191. a common electrode line;
101. a display sub-pixel; 111. an edge column; 112. a middle column; 161. an energy consumption unit; 162. a black matrix layer; 163. a light-shielding layer; 164. a first control unit; 165. a second control unit; 166. an intermediate photosensitive layer; 167. an edge photosensitive layer; 102. a pixel electrode; 103. a common electrode; 104. a liquid crystal layer; 105. a support layer; 106. a source electrode; 107. a drain electrode; 108. a color film layer; 210. and emitting the light.
Detailed Description
While this application is susceptible of embodiment in different forms, there is shown in the drawings and will herein be described in detail only some specific embodiments thereof with the understanding that the present disclosure is to be considered as an exemplification of the principles of the application and is not intended to limit the application to that as illustrated herein.
Thus, a feature indicated in this specification will serve to explain one of the features of one embodiment of the application, and does not imply that every embodiment of the application must have the explained feature. Further, it should be noted that this specification describes many features. Although some features may be combined to show a possible system design, these features may also be used in other combinations not explicitly described. Thus, the combinations illustrated are not intended to be limiting unless otherwise specified.
In the embodiments shown in the drawings, the indications of directions (such as up, down, left, right, front, and rear) are used to explain the structures and movements of the various elements of the present application not absolutely, but relatively. These illustrations are appropriate when the elements are in the positions shown in the figures. If the description of the positions of these elements changes, the indication of these directions changes accordingly.
Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the examples set forth herein; rather, these example embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The drawings are merely schematic illustrations of the present application and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and thus their repetitive description will be omitted.
The preferred embodiments of the present application will be further described in detail below with reference to the accompanying drawings of the present specification.
Example one
The present application provides a Display panel, which can be applied to an LCD (Liquid Crystal Display), an LED (Light Emitting Diode) Display, or an OLED (Organic Light-Emitting Diode) Display.
Referring to fig. 1, the display panel 10 has a display area 110 and a non-display area 120, wherein the non-display area 120 is disposed around the display area 110.
The display panel 10 includes a plurality of display sub-pixels 101 arranged in the display area 110 in an array, and the display panel 10 further includes edge data lines 130 located at two opposite edges of the plurality of display sub-pixels 101 and middle data lines 140 located between two adjacent columns of display sub-pixels 101; that is, the edge data line 130 is located at an edge region of the display area 110, i.e., a position of the display area 110 near the non-display area 120. Wherein the edge data lines 130 and the middle data lines 140 are arranged in a row direction and extend in a column direction. The row direction is the X direction and the column direction is the Y direction.
In addition, the arrangement of the display sub-pixels 101 may be a matrix type arrangement. The display panel includes an array substrate and an opposite substrate, which are disposed opposite to each other, and a liquid crystal layer 104 is disposed between the array substrate and the opposite substrate. The array substrate includes a TFT190, a pixel electrode 102, and a common electrode 103. A pixel electrode 102 is disposed below the liquid crystal layer 104, a common electrode 103 is disposed below the pixel electrode 102, and the common electrode 103 is connected to the common electrodeA line 191 connecting the pixel electrode 102 to the source electrode 106 of the TFT190, a data line connecting the drain electrode 107 of the TFT190, and controlling the TFT190 to be turned on ， The pixel electrode 102 is energized. And, the common electrode 103 is powered by the common electrode line 191, an electric field is formed between the pixel electrode 102 and the common electrode 103, the electric field drives the liquid crystal molecules in the liquid crystal layer 104 to deflect, and the light passes through the liquid crystal layer 104 to complete the picture display.
Referring to fig. 10, the display panel 10 includes a gate driving circuit and a scan line, the gate driving circuit is connected to the scan line, the gate driving circuit provides a gate driving signal to the scan line, the gate driving circuit is disposed in the non-display region 120, the scan line extends along a row direction, and the scan line is connected to the display sub-pixel 101. The scan lines may be provided in plural, and the plural scan lines are arranged at intervals along the column direction, and the display sub-pixels 101 in each row are connected to the same scan line.
When the liquid crystal molecules are driven to rotate, the data represents the waveform of a data voltage signal, S1 represents the waveform of the first row scanning line 180, S2 represents the waveform of the second row scanning line 180, the data voltage waveform and S1 are partially overlapped in time t1, the first row display sub-pixels 101 are charged, the corresponding TFT190 is kept disconnected in time t3, and the deflection state of the first row liquid crystal molecules is kept. The data voltage waveform and S2 partially coincide during time T2 to charge the second row of display subpixels 101, and the corresponding TFT190 remains off during time T3 to maintain the second row of liquid crystal molecules in this deflected state. And after one period of scanning is finished, scanning the next frame.
The plurality of display sub-pixels include a first sub-pixel connected to the middle data line 140 and a second sub-pixel connected to the edge data line 130, the middle data line 140 is connected to one first sub-pixel in the row direction, and the first sub-pixels are alternately distributed on both sides of the middle data line 140 in the column direction; the second sub-pixels are disposed on the same side of the edge data line 130, and are spaced apart from the adjacent first sub-pixels in the column direction.
For example, the display sub-pixels arranged in the display area have three rows. In the first row, one display sub-pixel 101 is connected to the right side of the middle data line 140; in the second row, the left side of the middle data line 140 is connected with one display sub-pixel 101; in the third row, one display sub-pixel 101 is connected to the right side of the middle data line 140. One or more intermediate data lines 140 may be provided. The edge data lines 130 and the middle data lines 140 are used to supply data voltages.
The second sub-pixels are distributed on the same side of the edge data line at intervals along the column direction. The second sub-pixel refers to the display sub-pixel 101 not connected to the middle data line 140, and as shown in fig. 1, the first on the left side of the first row, the first on the right side of the second row, and the first on the left side of the third row can be understood as the second sub-pixel. In short, in the display region, except for the connection of the middle data line 140, there are second sub-pixels.
Further, referring to fig. 1 for example, each column of display sub-pixels 101 is located in an odd row and connected to the left data line thereof, an even row is connected to the right data line thereof, and only one data line is shared between two adjacent columns of display sub-pixels 101. Therefore, all the display sub-pixels 101 are connected with the data line, and the display sub-pixels 101 in the same row are only connected with one data line, so that the situation that the display sub-pixels 101 are repeatedly connected or are not connected in a spare mode is avoided.
As can be seen from the above, the number of display sub-pixels 101 connected by the edge data line 130 is small, and is usually only half of the number of display sub-pixels 101 connected by the middle data line 140. This results in less consumption of voltage in the edge data line 130, resulting in a larger voltage applied to the display sub-pixel 101, resulting in a higher light emission luminance of the display sub-pixel 101 to which the edge data line 130 is connected. This results in the brightness of the entire display panel 10 being not uniform enough.
For this purpose, the display panel 10 further includes a light modulation structure, and the light modulation structure is at least disposed in cooperation with the second sub-pixel located in the edge column 111, so that the display brightness of the second sub-pixel and the display brightness of the first sub-pixel satisfy the requirement of brightness uniformity. The requirement of brightness uniformity may be satisfied by the fact that the brightness of both are equal or substantially equal. For example, the luminance of the two has a certain difference, and the difference is smaller than the threshold, and when the difference is smaller than the threshold, the user can not recognize the luminance difference with naked eyes.
Wherein, in the plurality of display sub-pixels 101: the display sub-pixel column adjacent to the edge data line 130 is defined as an edge column 111, and the remaining display sub-pixel columns are defined as middle columns 112.
The light-adjusting structure is connected with the display sub-pixels 101 of the edge column 111 in a matching manner, and the matching connection can be a direct connection, such as increasing the consumption of the power on the edge data line 130, or reducing the voltage transmission to the edge data line through an electric signal control manner. It is also possible to block light indirectly, for example in the light exit path of the display sub-pixels 101 of the edge columns 111. In the above, the luminance of the display sub-pixels 101 in the edge column 111 can be reduced to match the luminance of the display sub-pixels 101 in the middle column 112. In this way, the brightness of the entire display panel 10 is ensured to be more uniform.
In the technical scheme of this embodiment, the light modulation structure and the second sub-pixel are cooperatively arranged, and the display brightness of the second sub-pixel can be adjusted through the light modulation structure. The display brightness of the second sub-pixel and the display brightness of the first sub-pixel are made to satisfy the requirement of uniformity, so that the brightness of the whole display panel 10 is more uniform.
In the present application, the light-adjusting structure is connected to the display sub-pixels 101 of the edge column 111 in a matching manner, and the matching connection may have multiple connection modes.
First scheme of cooperation
The power consumption on the edge data line 130 is increased by increasing the load. Specifically, the data voltages output to the TFT190 by the edge data line and the middle data line are the same, and for this purpose, the dimming structure includes at least one row of energy dissipation units 161, and the energy dissipation units 161 are located in the non-display area 120 of the display panel 10 and connected to the edge data line 130, so that the load on the edge data line 130 is equal to the load on the middle data line 140. Thereby improving the voltage loss on the edge data line 130 and reducing the light-emitting brightness of the display sub-pixels 101 of the edge column 111, so that the brightness of the display panel meets the requirement of uniformity.
Further, in order to make the overall brightness of the display panel 10 more uniform, the energy consumption of the energy consumption unit 161 and the energy consumption of the display sub-pixel 101 are substantially the same. The data voltage of the energy consumption unit 161 connected to the edge data line 130 can be reduced, so that the voltage difference of the second sub-pixel is reduced and is closer to the voltage difference of the display sub-pixel 101 connected to the middle data line 140. The voltage difference consumed by the display sub-pixels 101 in the edge column 111 and the middle column 112 is substantially the same, so that the deflection angle of the liquid crystal molecules in the edge column 111 and the deflection angle of the liquid crystal molecules in the middle column 112 are substantially the same, and the amount of light transmitted through the liquid crystal layer 104 is also substantially the same. This ensures that the light emission luminance of the edge column 111 and the middle column 112 are also substantially the same.
In order to further improve the brightness uniformity, a row of energy dissipation units 161 is disposed on a side of each edge data line 130 away from the middle data line 140, and each energy dissipation unit 161 includes a plurality of dummy sub-pixels disposed at intervals; the portions of the edge data lines 130 between the adjacent second sub-pixels are connected to the dummy sub-pixels of the adjacent energy-consuming units 161 in a one-to-one correspondence manner. Thus, in the same row, the position where the energy consumption unit 161 is connected to the edge data line 130 corresponds to the position where the middle data line 140 is connected to the display sub-pixel 101.
For example, for the edge data line 130, the first row and the third row are provided with the second sub-pixels, the second row is provided with the energy consumption units 161, and the positions of the energy consumption units 161 connected to the edge data line 130 are located between the second sub-pixels of the first row and the second sub-pixels of the third row. For the adjacent middle data line 140, the position where the middle data line 140 connects the display sub-pixels 101 in the second row is located at a side close to the edge data line 130.
That is, for one of the edge data lines 130, the even rows are connected to the energy consuming units 161. And for the other edge data line 130, the odd rows are connected to the energy consuming units 161.
In order to further improve the brightness uniformity of the display panel 10, the energy dissipation unit 161 is a Dummy sub-pixel (Dummy TFT) connected to the edge data line 130, and the Dummy sub-pixel has the same structure as the display sub-pixel 101. As such, the edge column 111 faces the same installation environment as the middle column 112.
In order to equalize the mounting environment to which the edge data lines 130 face, the dummy sub-pixels are equally spaced in the non-display area. The distances between the dummy sub-pixels located on the same side are equal, thereby ensuring that the installation environment to which the edge data line 130 faces is also uniformly varied. For example, the voltage difference of the dummy sub-pixels regularly and uniformly changes through the equal-interval arrangement of the dummy sub-pixels.
Referring to fig. 2, in order to make the installation environment of the edge data line 130 more uniform, dummy sub-pixels may be sequentially arranged in a column direction on a side of the edge data line 130 away from the middle data line 140, that is, the dummy sub-pixels are arranged in each row, so that the left and right sides of the edge data line 130 are more uniform in environment.
Of course, the dummy sub-pixels are installed in the non-display area 120, and the size of the dummy sub-pixels may be set according to the size of the area of the non-display area 120. For example, to achieve a narrow bezel, the area of the dummy sub-pixels may be reduced.
Referring to fig. 3, when the second sub-pixel is a blue-light-displaying sub-pixel, the number of the second sub-pixels is defined as N1, and the number of the dummy sub-pixels is defined as N2, then: n2 is less than N1. The blue display sub-pixel emits blue light, and the human eye has low sensitivity to the blue light. Blue light appears less bright than red or green light at the same luminous intensity. That is, when the second sub-pixel is a blue-light-displaying sub-pixel, the light-emitting luminance is low even if the voltage difference obtained by the blue-light-displaying sub-pixel is large, whereby the number of dummy sub-pixels can be reduced. For example, the number N2 of dummy sub-pixels is one half, or one third, or one fifth of the number N1 of second sub-pixels.
In addition, when the number of dummy sub-pixels is small, the dummy sub-pixels may be disposed to extend at diagonal positions of the non-display area 120, such as upper left and lower right positions in fig. 3. Further save space, avoid the setting of grid drive circuit.
Second scheme
Referring to fig. 4 and 5, in the light emitting path of the display sub-pixel 101, the light is blocked. Specifically, the light-adjusting structure includes a light-shielding layer 163, and the pixel opening area of each display sub-pixel 101 is the same; in this case, the pixel opening area of the display sub-pixel 101 in the edge row 111 is covered by the light shielding layer 163, so that the actual light transmission area of the display sub-pixel 101 in the edge row 111 is smaller than the actual light transmission area of the display sub-pixel 101 in the middle row 112.
The counter substrate is provided with a black matrix layer 162, and a light shielding layer 163 and the black matrix layer 162 are provided on the same layer, and the light shielding layer 163 extends from the black matrix layer 162 at the edge position and covers the pixel opening area of the display sub-pixel 101, thereby completing the shielding of the pixel opening area of the display sub-pixel 101. Specifically, when the black matrix layer 162 is formed in the same layer, the light-shielding layer 163 is simultaneously formed by development and exposure. In addition, the light-shielding layer 163 can be disposed on the side of the opposite substrate away from the array substrate; the light shielding layer 163 may also be disposed on the array substrate, and at this time, the light shielding layer is a metal layer, and the position of the light shielding layer is in the same layer as the scanning line, and is not connected to any routing line, so as to prevent the driving of the dummy sub-pixel from being affected.
When the area of the pixel opening area of the display sub-pixels 101 in the original edge row 111 is the same as the area of the pixel opening area of the display sub-pixels 101 in the middle row 112, reducing the area of the pixel opening area of the display sub-pixels 101 in the partial edge row 111 is equivalent to reducing the number of the actually emitted light rays of the display sub-pixels 101 in the partial edge row 111, and the corresponding light emission luminance is also reduced accordingly.
In order to partially block the pixel aperture area of the edge row 111 without affecting the view of the user, and to improve the overall brightness uniformity of the display panel 10, the area of the pixel aperture area of the display sub-pixel 101 is defined as S1, and the area of the portion of the display sub-pixel 101 covered by the light-shielding layer 163 is defined as S2, which satisfies: S2/S1 is more than or equal to 1/3 and less than or equal to 1/2.
If the ratio of S2/S1 is less than 1/3, it means that the area covered by the pixel opening area of the display sub-pixel 101 is too small, which easily causes the brightness of the edge row 111 to be too strong. If the ratio of S2/S1 is greater than 1/2, it means that the covered area of the pixel opening area of the display sub-pixel 101 of the edge column 111 is too large, which easily causes the brightness of the whole edge column 111 to be too low, and will be lower than that of the display sub-pixel 101 of the middle column 112. For this purpose, the ratio of S2/S1 is controlled to be between 1/3 and 1/2. Thereby ensuring the composite requirement of the brightness uniformity of the display panel.
In the edge row 111, the areas of the display sub-pixels 101 blocked by the light blocking layer 163 are the same. For example, when the luminance of the pixel sub-pixels connected to the edge data line 130 is uniform from one end of the edge data line 130 to the other end thereof, the shielding area of the light shielding layer 163 with respect to the edge row 111 is also uniform from one end of the edge data line 130 to the other end thereof. What is thus occluded is not only the display sub-pixels 101 connected to the edge data lines 130, but also the display sub-pixels 101 connected to the intermediate data lines 140. Thus, the light-shielding layer 163 is simple in structure and more convenient to set.
In the process of manufacturing the display panel 10, the luminance of the display panel 10 is detected. During the detection, the luminance of the display sub-pixels 101 in the edge column 111 is high, while the luminance in the middle column is low, and some positions have low luminance. In order to provide more pertinence and improve the shielding effect, the shielding area of the light shielding layer 163 on the edge column 111 has positive correlation with the light emission luminance of the display sub-pixel 101 in the edge column 111.
In short, the area blocked by the light-shielding layer 163 is larger in the region with higher emission luminance. Accordingly, the area blocked by the light-shielding layer 163 is smaller in the region where the light emission luminance is lower.
Referring to fig. 4 and 6, in another aspect, in the edge row 111, at least two display sub-pixels 101 have different areas shielded by the light shielding layer 163. In this way, the entire design of the display panel 10 can be used to block a place where the light intensity is strong, and the layout of the light-shielding layer 163 is more flexible.
For example, in the process of detecting the luminance, the luminance gradually increases from the middle to both ends of the edge data line 130; in order to improve the brightness uniformity, the shielding area of the light shielding layer 163 to the edge row 111 is gradually increased from the middle to both ends of the edge data line 130.
For another example, in the process of detecting the brightness, the brightness gradually decreases from the middle to both ends of the edge data line 130; accordingly, the shielding area of the shielding layer 163 to the edge column 111 is gradually reduced from the middle to both ends of the edge data line 130.
Alternatively, in the process of detecting the luminance, the luminance gradually decreases from one end of the edge data line 130 to the other end; therefore, the shielding area of the edge row 111 by the shielding layer 163 gradually decreases from one end of the edge data line 130 to the other end.
Further, a part of the second sub-pixels may be set as dummy sub-pixels, so that the dummy sub-pixels do not emit light, thereby reducing the light intensity of the edge columns.
Third mating scheme
Referring to fig. 7 to 9, the present embodiment also provides a method for reducing voltage transmission through an electric signal control. Specifically, the dimming structure includes a plurality of driving chips, the plurality of driving chips include an edge driving chip 150 and a middle driving chip 170, which are independently controlled, the edge driving chip 150 is connected to at least the edge data line 130, at least one output port of the edge driving chip 150 is connected to the edge data line 130, and other output ports may be used to connect to the middle data line 140. The intermediate driving chip 170 is connected to the intermediate data line 140;
the display panel 10 further includes an intermediate photosensitive layer 166 and an edge photosensitive layer 167, the dimming structure includes a first control unit 164 and a second control unit 165, the intermediate photosensitive layer 166 is disposed on a light emitting surface of the first sub-pixel, the edge photosensitive layer 167 is disposed on a light emitting surface of the second sub-pixel, the intermediate photosensitive layer 166 is connected to the first control unit 164, the intermediate photosensitive layer 166 is used for transmitting the detected first photosensitive signal to the first control unit 164, the edge photosensitive layer 167 is connected to the second control unit 165, the edge photosensitive layer 167 is used for transmitting the detected second photosensitive signal to the second control unit 165, the first control unit 164 is connected to the intermediate driving chip 170, and the second control unit 165 is connected to the edge driving chip 150;
the first control unit 164 is configured to control the data voltage input to the middle data line by the middle driving chip 170 according to the first photosensitive signal, and the second control unit 165 is configured to control the data voltage input to the edge data line by the edge driving chip 150 according to the second photosensitive signal.
The photosensitive layer may be a photoresistor layer or a photovoltaic layer, a photodiode, or the like. The photoresistor layer may be made of cadmium sulfide material. The photosensitive layer is transparent, and the light transmits the photosensitive layer, avoids causing the sheltering from to the light of display screen. The photosensitive layer can detect the intensity of light and convert the intensity of light into current. The intermediate photosensitive layer 166 is capable of detecting the intensity of light of the display sub-pixels 101 of the intermediate column and converting the intensity of light into a first photosensitive signal. The edge sensitive layer 167 is capable of detecting the light intensity of the display sub-pixels 101 of the edge column and converting the light intensity into a second sensitive signal.
The first control unit 164 and the second control unit 165 may be one control unit, which may be a processor. In addition, the first control unit 164 may transmit the received first photosensitive signal to the second control unit 165, and the second control unit 165 may compare the magnitudes of the first photosensitive signal and the second photosensitive signal, and if the first photosensitive signal is smaller than the second photosensitive signal, the light intensity of the edge row is stronger than the light intensity of the middle row. The data voltage input to the edge data line by the edge driving chip 150 is controlled to be lower than the data voltage input to the intermediate data line 140 by the intermediate driving chip 170. If the first photosensitive signal is equal to the second photosensitive signal, which indicates that the illumination intensity of the edge column is equal to the illumination intensity of the middle column, the data voltage inputted to the edge data line by the lower edge driving chip 150 is maintained.
As for the position where the photosensitive layer is disposed, it may be located inside the display panel 10. For example, in the liquid crystal display panel 10, the support layer 105 surrounds a support space, and the liquid crystal layer 104 is provided in the support space. The photosensitive layer is disposed in the pixel opening area in the supporting space in the light emitting direction, and further, the photosensitive layer is disposed on the side of the color film layer 108 facing the liquid crystal layer 104. It should be further noted that the signal lines connected to the photosensitive layer are located above the data lines of the display panel 10, that is, the signal lines and the data lines are located in the same orthographic projection area of the display panel 10, so that the shielding of the signal lines to the light rays can be reduced, and the transmittance of the light rays can be ensured.
One edge data line 130 is arranged on the left and right, and the edge driving chips 150 connected with the two edge data lines 130 are independently controlled. When the number of the energy consumption units 161 connected to the two edge data lines 130 is the same, the data voltages provided by the two edge driving chips 150 are the same, so that the two edge data lines 130 obtain the same data voltage, and the same light-emitting brightness of the two edge columns 111 is ensured.
If the number of the energy consumption units 161 connected to one of the edge data lines 130 is greater, the corresponding edge driving chip 150 inputs a greater data voltage, and the corresponding edge data line 130 receives a greater data voltage, otherwise, the received data voltage is smaller.
According to the actual situation, one of the three modes can be used independently, and the three modes can be combined with each other in pairs or in three modes. When the second matching scheme is combined, the shielding of the light shielding layer on the edge array can be properly reduced, and the ratio of S2/S1 can be lower than 1/3. Thus, a more flexible arrangement scheme can be obtained, and the brightness uniformity of the display panel 10 can be further improved, so that the brightness uniformity of the display panel 10 meets the requirement.
For example, when the dummy sub-pixels are provided, the number of the dummy sub-pixels can be reduced appropriately, and the occupation of the frame area can be reduced. The dummy sub-pixels are arranged in a manner such that the edge driving chip 150 reduces the data voltage input to the edge data line 130. Furthermore, the display sub-pixels 101 in the edge row 111 can be partially shielded on the basis of reducing the data voltage input to the edge data line 130.
Example two
Referring to fig. 11, the present application further provides a display device, which includes a liquid crystal display panel and a backlight module 20, wherein the liquid crystal display panel is disposed on the light-emitting side of the backlight module 20. The backlight module 20 is used for providing a backlight source, and the emergent light 210 of the backlight module 20 is emitted through the liquid crystal display panel. The liquid crystal display panel in this embodiment is the display panel 10. For the specific implementation of the liquid crystal display panel, reference may be made to the above display panel, which is not described herein again.
While the present application has been described with reference to several exemplary embodiments, it is understood that the terminology used is intended to be in the nature of words of description and illustration, rather than of limitation. As the present application may be embodied in several forms without departing from the spirit or essential characteristics thereof, it should also be understood that the above-described embodiments are not limited by any of the details of the foregoing description, but rather should be construed broadly within its spirit and scope as defined in the appended claims, and therefore all changes and modifications that fall within the metes and bounds of the claims, or equivalence of such metes and bounds are therefore intended to be embraced by the appended claims.

Claims (11)

1. A display panel comprises a plurality of display sub-pixels which are arranged in a display area in an array mode, edge data lines which are located on two opposite edges of the plurality of display sub-pixels, and middle data lines which are arranged between two adjacent columns of display sub-pixels;
the plurality of display sub-pixels comprise first sub-pixels connected with the middle data line and second sub-pixels connected with the edge data line, the middle data line is connected with one first sub-pixel in the row direction, and the first sub-pixels are alternately distributed on two sides of the middle data line in the column direction;
the second sub-pixels are arranged on the same side of the edge data line and are distributed at intervals with the adjacent first sub-pixels in the column direction;
the display panel is characterized by further comprising a dimming structure, wherein the dimming structure is at least matched with the second sub-pixel, so that the display brightness of the second sub-pixel and the display brightness of the first sub-pixel meet the requirement of brightness uniformity.
2. The display panel of claim 1, wherein the dimming structure comprises at least one row of energy consuming units, and the energy consuming units are located in a non-display area of the display panel and connected to the edge data lines to equalize the load on the edge data lines with the load on the middle data lines.
3. The display panel according to claim 2, wherein a column of the energy dissipation units is disposed on a side of each of the edge data lines away from the middle data line, and each of the energy dissipation units comprises a plurality of dummy sub-pixels disposed at intervals.
4. The display panel of claim 3, wherein the dummy sub-pixels are equally spaced in the non-display area.
5. The display panel according to claim 3, wherein the portions of the edge data lines between the adjacent second sub-pixels are connected to the dummy sub-pixels of the energy-consuming units adjacent to the edge data lines in a one-to-one correspondence.
6. The display panel according to claim 3, wherein the dummy sub-pixel has the same structure as the display sub-pixel.
7. The display panel according to claim 3, wherein when the second sub-pixel is a blue-light display sub-pixel, the number of the second sub-pixels is defined as N1, and the number of the dummy sub-pixels is defined as N2, then: n2 is less than N1.
8. The display panel according to any one of claims 1 to 7, wherein, in the plurality of display sub-pixels: the display sub-pixel columns adjacent to the edge data lines are defined as edge columns, and the rest display sub-pixel columns are defined as middle columns;
the light adjusting structure comprises a light shielding layer, and the pixel opening areas of the display sub-pixels are the same; wherein,
and the part of the pixel opening area of the display sub-pixels in the edge column is covered by the shading layer, so that the actual light-transmitting area of the display sub-pixels in the edge column is smaller than the actual light-transmitting area of the display sub-pixels in the middle column.
9. The display panel according to claim 8, wherein an area of a pixel opening region of the display sub-pixel is defined as S1, and an area of a portion of the display sub-pixel covered by the light shielding layer is defined as S2, then: S2/S1 is more than or equal to 1/3 and less than or equal to 1/2.
10. The display panel according to any one of claims 1 to 7, wherein the dimming structure comprises a plurality of driving chips, the plurality of driving chips comprising independently controlled edge driving chips and intermediate driving chips, the edge driving chips being connected to at least the edge data lines, the intermediate driving chips being connected to the intermediate data lines;
the display panel further comprises an intermediate photosensitive layer and an edge photosensitive layer, the dimming structure comprises a first control unit and a second control unit, the intermediate photosensitive layer is arranged on the light emitting surface of the first sub-pixel, the edge photosensitive layer is arranged on the light emitting surface of the second sub-pixel, the intermediate photosensitive layer is connected with the first control unit, the intermediate photosensitive layer is used for transmitting a detected first photosensitive signal to the first control unit, the edge photosensitive layer is connected with the second control unit, the edge photosensitive layer is used for transmitting a detected second photosensitive signal to the second control unit, the first control unit is connected with the intermediate driving chip, and the second control unit is connected with the edge driving chip;
the first control unit is used for controlling the data voltage input by the middle driving chip to the middle data line according to the first photosensitive signal, and the second control unit is used for controlling the data voltage input by the edge driving chip to the edge data line according to the second photosensitive signal.
11. A display device, comprising a liquid crystal display panel and a backlight module, wherein the liquid crystal display panel is arranged at the light-emitting side of the backlight module, and the liquid crystal display panel is the display panel as claimed in any one of claims 1 to 10.
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