CN111176488B - Display panel and display device - Google Patents
Display panel and display device Download PDFInfo
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- CN111176488B CN111176488B CN202010002152.0A CN202010002152A CN111176488B CN 111176488 B CN111176488 B CN 111176488B CN 202010002152 A CN202010002152 A CN 202010002152A CN 111176488 B CN111176488 B CN 111176488B
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0412—Digitisers structurally integrated in a display
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0416—Control or interface arrangements specially adapted for digitisers
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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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- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
- Electroluminescent Light Sources (AREA)
Abstract
The invention discloses a display panel and a display device. The display panel comprises a display substrate and a touch control layer positioned on the display side of the display substrate; the display substrate is provided with a display area and a non-display area arranged around the display area, and comprises edge sub-pixels which are positioned in the edge area of the display area and are adjacent to the non-display area; the touch layer comprises a touch area and a virtual touch area, and the virtual touch area covers at least part of the area of the edge sub-pixel in the direction perpendicular to the display substrate, and the light transmittance of the touch layer in the virtual touch area is smaller than that of the touch layer in the touch area. The problem of color edges or saw teeth on the edge of the display panel is solved, and the display effect of the display panel is improved. In addition, the touch layer of the virtual touch area and the touch layer of the touch area can be formed in the same process, so that the process for manufacturing the touch layer of the virtual touch area can be not additionally increased while improving the color edges or the saw teeth of the edge of the display panel.
Description
Technical Field
The embodiment of the invention relates to the technical field of display, in particular to a display panel and a display device.
Background
The display panel includes a plurality of pixel units. When the pixels are arranged, the edge sub-pixels in the display panel have the phenomenon that the single-color sub-pixels are protruded, so that the edge of the display panel has the problems of color edges or saw-tooth stripes and the like, and the display effect of the display panel is affected.
Disclosure of Invention
The invention provides a display panel and a display device, which are used for improving the display effect of the display panel.
In a first aspect, an embodiment of the present invention provides a display panel, including a display substrate and a touch layer located on a display side of the display substrate;
the display substrate is provided with a display area and a non-display area arranged around the display area, and comprises edge sub-pixels which are positioned in the edge area of the display area and adjacent to the non-display area; the touch layer comprises a touch area and a virtual touch area, the virtual touch area covers at least part of the area of the edge sub-pixel in the direction perpendicular to the display substrate, and the light transmittance of the touch layer in the virtual touch area is smaller than that of the touch layer in the touch area. The proposal ensures that the light quantity of the light emitted by the edge sub-pixels transmitted to the light-emitting surface of the display panel is smaller, thereby reducing the light-emitting brightness of the display area corresponding to the edge sub-pixels, further improving the problem of color edges of the edge of the display panel and improving the display effect of the display panel. In addition, the touch layer of the virtual touch area and the touch layer of the touch area are arranged in the same layer, namely the touch layer of the virtual touch area and the touch layer of the touch area can be formed in the same process, so that the process for manufacturing the touch layer of the virtual touch area can not be additionally increased while the color edges or saw teeth of the edge of the display panel are improved, and the process flow for manufacturing the display panel is prevented from being increased.
Optionally, the edge sub-pixels include a first edge sub-pixel and a second edge sub-pixel, the first edge sub-pixel is disposed protruding toward the non-display area with respect to the second edge sub-pixel, and the virtual touch area covers a portion of the first edge sub-pixel protruding toward the non-display area in a direction perpendicular to the display substrate.
Optionally, the touch layer includes a plurality of touch units, and a distribution density of the touch units in the virtual touch area is greater than a distribution density of the touch units in the touch area. According to the scheme, the light transmittance of the virtual touch area is smaller than that of the touch area, so that the light quantity of the light emitted by the edge sub-pixels transmitted to the light emitting surface of the display panel is smaller, the light emitting brightness of the display area corresponding to the edge sub-pixels is reduced, the problem of color edges or saw teeth of the edge of the display panel is solved, and the display effect of the display panel is improved. In addition, the touch control units of the virtual touch control area and the touch control units of the touch control area are arranged in the same layer, namely the touch control units of the virtual touch control area and the touch control units of the touch control area can be formed in the same process, so that the process for manufacturing the touch control units of the virtual touch control area can not be additionally increased while the color edges or saw teeth of the edge of the display panel are improved, and the process flow for manufacturing the display panel is prevented from being increased.
Optionally, the area of the touch unit in the virtual touch area is smaller than the area of the touch unit in the touch area. The scheme can be more beneficial to realizing that the distribution density of the touch control units in the virtual touch control area is larger than that of the touch control units in the touch control area, so that the light transmittance of the virtual touch control area is smaller than that of the touch control area.
Optionally, the touch layer includes a touch electrode, and a distribution density of the touch electrode in the virtual touch area is greater than a distribution density of the touch electrode in the touch area;
preferably, the touch electrode includes a first touch electrode and a second touch electrode that are arranged in different layers, and the distribution density of the first touch electrode in the virtual touch area is greater than the distribution density of the first touch electrode in the touch area, and/or the distribution density of the second touch electrode in the virtual touch area is greater than the distribution density of the second touch electrode in the touch area. The scheme can realize that the light transmittance of the virtual touch area is smaller than that of the touch area. Therefore, the light quantity of the light emitted by the edge sub-pixels transmitted to the light emitting surface of the display panel is smaller, so that the light emitting brightness of the display area corresponding to the edge sub-pixels is reduced, the problem of color edges or saw teeth of the edge of the display panel is further solved, and the display effect of the display panel is improved. In addition, the touch electrode of the virtual touch area and the touch electrode of the touch area are arranged in the same layer, namely the touch electrode of the virtual touch area and the touch electrode of the touch area can be formed in the same process, so that the process for manufacturing the touch electrode of the virtual touch area can not be additionally increased while the color edge or saw tooth of the edge of the display panel is improved, and the process flow for manufacturing the display panel is prevented from being increased.
Optionally, the touch layer includes a dielectric layer, and a light transmittance of the dielectric layer in the virtual touch area is smaller than a light transmittance of the dielectric layer in the touch area. According to the scheme, the light transmittance of the virtual touch area is further smaller than that of the touch area, the light quantity of the light emitted by the edge sub-pixels and transmitted to the light emitting surface of the display panel is further reduced, so that the light emitting brightness of the display area corresponding to the edge sub-pixels is further reduced, the problem of color edges or saw teeth of the edge of the display panel is further solved, and the display effect of the display panel is improved.
Optionally, the transmittance of the dielectric layer is 50% -90%; preferably, the material of the dielectric layer comprises silicon oxynitride. According to the scheme, the light blocking effect of the virtual touch area can be adjusted according to the requirement, and then the light quantity of the light emitted by the edge sub-pixels covered by the virtual touch area and transmitted to the light emitting surface of the display panel can be adjusted, so that the problem of edge color edges or saw teeth can be better improved according to the requirement. Preferably, the nitrogen-oxygen content of the dielectric layer in the virtual touch area is different from the nitrogen-oxygen content of the dielectric layer in the touch area, so that the light transmittance of the dielectric layer in the virtual touch area is smaller than that of the dielectric layer in the touch area.
Optionally, the thickness of the dielectric layer in the virtual touch area is greater than the thickness of the dielectric layer in the touch area;
preferably, the thickness of the dielectric layer in the virtual touch area is greater than 120nm and less than 800nm. According to the scheme, the insulation effect of the dielectric layer can be achieved, and the light transmittance of the dielectric layer can be within 50% -90%, so that the light blocking effect of the virtual touch area can be adjusted according to the requirement.
Optionally, edges of the virtual touch area adjacent to the touch area are in a straight line shape, a zigzag shape or an arc shape. In the scheme, the shapes of the virtual touch area and the adjacent edges of the touch area can be adaptively changed according to the edge shapes of the edge sub-pixels of the display panel, so that the problem of color edges or saw teeth of the edges of different display screens such as the special-shaped screen, the rectangular screen and the like is solved.
Optionally, the virtual touch area extends from the edge of the display area to the center of the display area to a length of 25 μm-50 μm. The scheme can cover the part corresponding to the color edge of the edge when the display panel is displayed, and can avoid the problem of reducing the light emitting rate of the display panel caused by covering other sub-pixels by the virtual touch area.
In a second aspect, an embodiment of the present invention further provides a display apparatus, including a display panel provided by any embodiment of the present invention.
According to the technical scheme, the touch layer comprises the touch area and the virtual touch area, the virtual touch area covers at least part of the area of the edge sub-pixel in the direction perpendicular to the display substrate, and the light transmittance of the touch layer in the virtual touch area is smaller than that of the touch layer in the touch area. The light emitted by the edge sub-pixels is blocked by the touch layer of the virtual touch area, so that the light emitted by the edge sub-pixels is transmitted to the light-emitting surface of the display panel to be smaller, thereby reducing the light-emitting brightness of the display area corresponding to the edge sub-pixels, further improving the problem of color edges or saw teeth of the edge of the display panel and improving the display effect of the display panel. In addition, the touch layer of the virtual touch area and the touch layer of the touch area are arranged in the same layer, namely the touch layer of the virtual touch area and the touch layer of the touch area can be formed in the same process, so that the process for manufacturing the touch layer of the virtual touch area can not be additionally increased while the color edges or saw teeth of the edge of the display panel are improved, and the process flow for manufacturing the display panel is prevented from being increased.
Drawings
FIG. 1 is a schematic diagram of a pixel arrangement of a conventional display panel;
fig. 2 is a schematic structural diagram of a display panel according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of another display panel according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of another display panel according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of another display panel according to an embodiment of the present invention;
fig. 6 is a schematic cross-sectional view of a display panel according to an embodiment of the invention;
FIG. 7 is a schematic cross-sectional view of another display panel according to an embodiment of the invention;
fig. 8 is a schematic structural diagram of a display device according to an embodiment of the present invention.
Detailed Description
The invention is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present invention are shown in the drawings.
The display panel includes a plurality of pixel units, each including a plurality of sub-pixels. When the pixels are arranged, in order to ensure the completeness of the sub-pixels, in the edge area of the display panel, the boundary line between the sub-pixels and the edge can not be completely matched, and a saw-tooth notch is formed, so that when the display panel displays, the problem that color edges or saw teeth and the like are formed at the edge, and the display effect of the display panel is affected. Fig. 1 is a schematic diagram of a pixel arrangement of a conventional display panel. As shown in fig. 1, the display panel 10 is a rectangular display panel, and a plurality of sub-pixels with different colors are arrayed on the display panel 10, wherein R is a red sub-pixel, G is a green sub-pixel, B is a blue sub-pixel, and R, G and B form a pixel unit. Due to the pixel arrangement and the size requirements of the sub-pixels with different colors, the first row of the display panel 10 only includes the green sub-pixels, and the last row only includes the red sub-pixels, so that the display area corresponding to the first row of the sub-pixels of the display panel 10 has a marginal green edge, and the display area corresponding to the last row of the sub-pixels has a marginal red edge, thereby affecting the display effect of the display panel.
Aiming at the technical problems, the embodiment of the invention provides a display panel. The display panel comprises a display substrate and a touch control layer positioned on the display side of the display substrate; the display substrate is provided with a display area and a non-display area arranged around the display area, and comprises edge sub-pixels which are positioned in the edge area of the display area and are adjacent to the non-display area; the touch layer comprises a touch area and a virtual touch area, and the virtual touch area covers at least part of the area of the edge sub-pixel in the direction perpendicular to the display substrate, and the light transmittance of the touch layer in the virtual touch area is smaller than that of the touch layer in the touch area.
In the above technical solution, the edge sub-pixel is located at the most edge of the pixel structure, and the outline of the outer contour of the adjacent edge sub-pixel, which is close to the non-display area, is not matched with the outline of the corresponding position of the edge of the display area. For example, in a shaped screen (commonly known as Liu Haibing), an edge sub-pixel is a sub-pixel located at the very edge of the pixel structure and near the shaped region; in a rectangular screen with a chamfer, the edge sub-pixel is the sub-pixel located at the extreme edge of the pixel structure and near the chamfer area; in addition, for some pixel structures with special pixel arrangement, for example, the pixel structure shown in fig. 1, because each sub-pixel is arranged in a delta shape in each pixel unit, in a certain arrangement direction (such as a row direction), the outer contour of the sub-pixel near the non-display area formed by the most edge presents obvious concave-convex lines, which are not matched with the straight line contour line at the corresponding position of the edge of the display area, and at this time, the edge sub-pixel is the sub-pixel located at the most edge of the pixel structure and near the straight line contour line. In the design of a display panel, color edges or jaggies appear in the display area corresponding to the edge sub-pixels when displaying an image due to the edge sub-pixels.
In particular, the display substrate may include a driving circuit and a light emitting device. That is, devices such as a thin film transistor and a capacitor are formed on a substrate to form a driving circuit, and the driving circuit is connected to the light emitting device for driving the light emitting device to emit light. The touch control area and the virtual touch control area of the touch control layer are both provided with touch control units, the touch control units of the touch control area can be connected with the touch control circuit to enable the touch control circuit to have a touch control function, and the touch control units of the virtual touch control area are not connected with the touch control circuit to enable the virtual touch control area not to have the touch control function. When the virtual touch area covers at least part of the area of the edge sub-pixel, the light emitted by the edge sub-pixel is blocked by the touch layer of the virtual touch area, so that the light emitted by the edge sub-pixel is transmitted to the light emitting surface of the display panel to be smaller, the light emitting brightness of the display area corresponding to the edge sub-pixel is reduced, the problem of color edges or saw teeth of the edge of the display panel is further solved, and the display effect of the display panel is improved. In addition, the touch layer of the virtual touch area and the touch layer of the touch area are arranged in the same layer, namely the touch layer of the virtual touch area and the touch layer of the touch area can be formed in the same process, so that the process for manufacturing the touch layer of the virtual touch area can not be additionally increased while the color edges or saw teeth of the edge of the display panel are improved, and the process flow for manufacturing the display panel is prevented from being increased.
Fig. 2 is a schematic structural diagram of a display panel according to an embodiment of the present invention. As shown in fig. 2, the display panel includes a display substrate 100 and a touch layer 200 on the display substrate 100. The display substrate 100 includes a display region 110 and a non-display region 120, and the display substrate 100 includes edge sub-pixels P1 located at an edge region of the display region 110 and adjacent to the non-display region 120. The touch layer 200 includes a touch area 210 and a virtual touch area 220, and the virtual touch area 220 covers at least a partial area of the edge sub-pixel P1 in a direction perpendicular to the display substrate 100.
Specifically, the light transmittance of the touch layer 200 of the virtual touch area 220 is lower, and the light emitted by the edge sub-pixel P1 at least partially covered by the virtual touch area 220 is transmitted to the light emitting surface of the display panel with less light, so that the light emitting brightness of the display area 110 corresponding to the edge sub-pixel P1 is lower, thereby improving the problem of poor display of the display area 110 corresponding to the edge sub-pixel P1 of the display panel and improving the display effect of the display panel.
It should be noted that, fig. 2 exemplarily shows that the display panel is a rectangular display panel, and the edge sub-pixels P1 are the first row sub-pixels and the last row sub-pixels of the display panel. In some embodiments, the edge subpixels may also be the first column subpixels and the last column subpixels of the display panel for different pixel arrangements or designs of the display area edges. In other embodiments, when the display panel is a shaped display panel, the edge sub-pixels may further include sub-pixels at the edges of the shaped region. Fig. 3 is a schematic structural diagram of another display panel according to an embodiment of the invention. As shown in fig. 3, the display panel has rounded corners where the edge subpixels P1 of the display panel are distributed in a plurality of rows of subpixels. The virtual touch area 220 can at least partially cover the edge sub-pixels P1 of different rows to reduce the amount of light emitted by the edge sub-pixels P1 transmitted to the light emitting surface of the display panel, so that the light emitting brightness of the display area 110 corresponding to the edge sub-pixels P1 is lower, thereby improving the problem of poor display of the display area 110 corresponding to the edge sub-pixels P1 of the display panel and improving the display effect of the display panel.
Optionally, the edge sub-pixels include a first edge sub-pixel and a second edge sub-pixel, the first edge sub-pixel is disposed protruding toward the non-display area relative to the second edge sub-pixel, and the virtual touch area covers a portion of the first edge sub-pixel protruding toward the non-display area in a direction perpendicular to the display substrate.
Illustratively, referring to fig. 1 and 2, in the first row of edge sub-pixels, the green sub-pixel G is a first edge sub-pixel, the blue sub-pixel B is a second edge sub-pixel, and the green sub-pixel G is disposed to protrude toward the non-display area 120 with respect to the blue sub-pixel B. At this time, in the direction perpendicular to the display substrate, the virtual touch area is provided to cover the portion of the green sub-pixel G protruding toward the non-display area 120, so that the transmittance of the light of the portion of the green sub-pixel G protruding toward the non-display area 120 can be reduced, thereby reducing the light emitting brightness of the vertical light of the covered green sub-pixel G, and further improving the problem of the edge color (green line) of the display area.
Therefore, the virtual touch control area is arranged to cover the part, protruding towards the non-display area, of the first edge sub-pixel relative to the second edge sub-pixel in the edge sub-pixels, so that the part corresponding to the edge display failure during display of the display panel can be covered, and the display effect of the display panel is improved.
Optionally, the virtual touch area extends from the edge of the display area to the center of the display area by a length of 25 μm to 50 μm.
Illustratively, the different color sub-pixels constitute one pixel unit, and the side length of one pixel unit is 50 μm to 100 μm. The length of the protruding part of the edge sub-pixel (the first edge sub-pixel) towards the non-display area relative to the other sub-pixels (the second edge sub-pixel) occupies one third to one half of the side length of the pixel unit, so that the length of the virtual touch area extending from the edge of the display area to the center of the display area can be set to be 25-50 μm, the virtual touch area covers the protruding part of the edge sub-pixel towards the non-display area relative to the other sub-pixels, the part corresponding to the edge display failure during display of the display panel can be covered, and the light-emitting rate of the display panel caused by the virtual touch area covering the other sub-pixels can be avoided.
Optionally, the orthographic projection of the edge of the virtual touch area adjacent to the touch area on the display substrate is in a straight line shape, a zigzag shape or an arc shape.
Specifically, the shape of the orthographic projection of the adjacent edges of the virtual touch area and the touch area on the display substrate can be adaptively changed according to the arrangement of the edge sub-pixels of the display panel. For example, with continued reference to fig. 2, when a portion of the edge sub-pixels are disposed to protrude toward the non-display area relative to other edge sub-pixels, and the protruding portions of the edge sub-pixels are in the same rectangular area, the front projection of the edge of the virtual touch area 220 adjacent to the touch area 210 on the display substrate may be linear. As shown in fig. 3, when the edge sub-pixels of the display panel are arranged in a step near the chamfer area, the orthographic projection of the edge of the virtual touch area 220 adjacent to the touch area 210 on the display substrate may be in an arc shape. In addition, fig. 4 is a schematic structural diagram of another display panel according to an embodiment of the present invention. As shown in fig. 4, when the edge sub-pixels of the display panel are arranged in a step near the chamfer area, the front projection of the edge of the virtual touch area 220 adjacent to the touch area 210 on the display substrate may also be in a zigzag shape. The shape of the orthographic projection of the adjacent edges of the virtual touch area 220 and the touch area 210 on the display substrate is not limited in this embodiment, as long as the virtual touch area 220 can cover at least part of the edge sub-pixels.
Fig. 5 is a schematic structural diagram of another display panel according to an embodiment of the invention. As shown in fig. 5, the touch layer includes a plurality of touch units 201, and the distribution density of the touch units 201 in the virtual touch area 220 is greater than the distribution density of the touch units 201 in the touch area 210.
In the embodiments of the present invention, the distribution density refers to the area occupied by the touch unit or the touch electrode in a unit area.
Specifically, the touch unit 201 of the touch area 210 is electrically connected to the touch circuit, and has a touch function. The touch unit 201 of the virtual touch area 220 is a virtual touch unit, i.e. is not electrically connected to the touch circuit, and has no touch function. When the light transmittance of the touch unit 201 is lower, and when the distribution density of the touch unit 201 in the virtual touch area 220 is greater than the distribution density of the touch unit 201 in the touch area 210, the light transmittance of the virtual touch area 220 is smaller than the light transmittance of the touch area 210, so that when the virtual touch area 220 covers at least a part of the area of the edge sub-pixel P1, the light emitted by the edge sub-pixel P1 is blocked by the touch layer of the virtual touch area 220, and the light transmitted to the light emitting side of the display panel is smaller, thereby reducing the light emitting brightness of the display area 110 corresponding to the edge sub-pixel P1, further improving the problem of poor display of the display area 110 corresponding to the edge sub-pixel P1 of the display panel, and improving the display effect of the display panel.
In addition, with continued reference to fig. 5, the area of the touch unit 201 is larger than that of the pixel unit, and the touch unit 201 disposed in the virtual touch area 220 may extend to the non-display area 120, so that the touch unit 201 of the virtual touch area 220 covers at least a part of the area of the edge sub-pixel P1, thereby avoiding the touch unit 201 of the virtual touch area 220 from weakening the light quantity transmitted to the light emitting surface of the display panel by the sub-pixel of the touch area 210, and ensuring the light emitting brightness of the display panel.
It should be noted that, the shape of the touch unit 201 is not particularly limited, and only one shape of the touch unit 201 is illustrated in fig. 5 by way of example. In other embodiments, the touch unit 201 may have a diamond shape or other shapes.
With continued reference to fig. 5, the area of the touch unit 201 in the virtual touch area 220 is smaller than the area of the touch unit 201 in the touch area 210.
Specifically, based on the above technical solution, when the distribution density of the touch units in the virtual touch area is greater than that of the touch units in the touch area, the area of the touch units 201 is smaller, and the touch units 201 are arranged more densely in the same area, so that the arrangement of the touch units 201 in the virtual touch area 220 is facilitated, and the transmittance of the virtual touch area 220 to light is reduced, that is, the transmittance of the virtual touch area 220 is smaller than that of the touch area, so that the light quantity of the light of at least part of the area of the edge sub-pixel P1 covered by the virtual touch area 220 transmitted to the light emitting surface of the display panel is reduced, the light emitting brightness of the display area 110 corresponding to the edge sub-pixel P1 is reduced, the problem of poor display of the display area 110 corresponding to the edge sub-pixel P1 of the display panel is further improved, and the display effect of the display panel is improved.
With continued reference to fig. 5, the touch layer includes touch electrodes, and the distribution density of the touch electrodes in the virtual touch area 220 is greater than the distribution density of the touch electrodes in the touch area 210.
Specifically, the touch electrodes may constitute the touch unit 201 in the touch layer. When the touch of the display panel is capacitive touch, the touch electrode may be a conductive layer forming a capacitive plate. The material of the touch electrode can be metal or semiconductor conductive material, such as indium tin oxide. When the light emitting side of the display substrate 100 is provided with the touch electrode, light emitted by the sub-pixels covered by the touch electrode in the orthographic projection manner on the display substrate 100 is reduced in light quantity transmitted to the light emitting surface of the display panel relative to light emitted by the sub-pixels covered by the display substrate 100 in the orthographic projection manner without the touch electrode under the light blocking effect of the touch electrode. Therefore, when the distribution density of the touch electrode in the virtual touch area 220 is greater than that of the touch electrode in the touch area 210, the light blocking effect of the touch electrode on the edge sub-pixel P1 corresponding to the virtual touch area 220 is greater than that of the touch electrode on the sub-pixel corresponding to the touch area 210, so that the light emitted by the edge sub-pixel P1 covered by the virtual touch area 220 is transmitted to the light emitted by the sub-pixel covered by the touch area 210, and the light quantity of the light emitted by the edge sub-pixel P1 transmitted to the light emitting surface of the display panel is relatively small, so that the light emitting brightness of the display area 110 corresponding to the edge sub-pixel P1 is relatively low, and the problem of poor display of the display area 110 corresponding to the edge sub-pixel P1 of the display panel is further improved.
In other embodiments, the touch electrode includes a first touch electrode and a second touch electrode that are disposed in different layers, and the distribution density of the first touch electrode in the virtual touch area is greater than the distribution density of the first touch electrode in the touch area, and/or the distribution density of the second touch electrode in the virtual touch area is greater than the distribution density of the second touch electrode in the touch area.
Specifically, the first touch electrode and the second touch electrode are conductive electrodes and can be respectively used as a first capacitance plate and a second capacitance plate of a touch capacitance in the capacitive touch electrodes, and orthographic projections of the first touch electrode and the second touch electrode on the display substrate overlap to form the touch capacitance. The materials of the first touch electrode and the second touch electrode can be metal or semiconductor conductive materials, so that the light transmittance of the first touch electrode and the second touch electrode is relatively low. When the distribution density of the first touch electrode in the virtual touch area is larger than that of the first touch electrode in the touch area, the light blocking effect of the first touch electrode on the edge sub-pixels corresponding to the virtual touch area is larger than that of the first touch electrode on the sub-pixels corresponding to the touch area. Therefore, the light emitted by the edge sub-pixels covered by the virtual touch area is relatively less than the light emitted by the sub-pixels covered by the touch area, and the light emitted by the edge sub-pixels transmits the light output surface of the display panel, so that the light emitting brightness of the display area corresponding to the edge sub-pixels is relatively lower, the problem of color edges or saw teeth of the edge of the display panel is further solved, and the display effect of the display panel is improved. Similarly, when the distribution density of the second touch electrode in the virtual touch area is greater than that of the second touch electrode in the touch area, the light blocking effect of the second touch electrode on the edge sub-pixels corresponding to the virtual touch area is greater than that of the second touch electrode on the sub-pixels corresponding to the touch area. Therefore, the light emitted by the edge sub-pixels covered by the virtual touch area is relatively less than the light emitted by the sub-pixels covered by the touch area, and the light emitted by the edge sub-pixels transmits the light output surface of the display panel, so that the light emitting brightness of the display area corresponding to the edge sub-pixels is relatively lower, the problem of color edges or saw teeth of the edge of the display panel is further solved, and the display effect of the display panel is improved.
In addition, the distribution density of the first touch electrode in the virtual touch area is larger than that of the first touch electrode in the touch area, and the distribution density of the second touch electrode in the virtual touch area is larger than that of the second touch electrode in the touch area, at the moment, the light blocking effect of the first touch electrode on the edge sub-pixel corresponding to the virtual touch area is larger than that of the first touch electrode on the sub-pixel corresponding to the touch area, and meanwhile, the light blocking effect of the second touch electrode on the edge sub-pixel corresponding to the virtual touch area is larger than that of the second touch electrode on the sub-pixel corresponding to the touch area. Therefore, the light emitted by the edge sub-pixels covered by the virtual touch area is smaller in light quantity of the light emitted by the edge sub-pixels transmitting the light emitting surface of the display panel relative to the light emitted by the sub-pixels covered by the touch area, and the light emitting brightness of the display area corresponding to the edge sub-pixels is lower, so that the problem of color edges or saw teeth of the edge of the display panel is further solved, and the display effect of the display panel is improved.
Fig. 6 is a schematic cross-sectional structure of a display panel according to an embodiment of the invention. As shown in fig. 6, the touch layer of the display panel includes a dielectric layer 240, and the transmittance of the dielectric layer 240 in the virtual touch area 220 is smaller than the transmittance of the dielectric layer 240 in the touch area 210.
Specifically, the dielectric layer 240 is disposed between the first touch electrode 250 and the second touch electrode 260, and is used for insulating the first touch electrode 250 and the second touch electrode 260, so that the first touch electrode 250, the dielectric layer 240 and the second touch electrode 260 form a touch capacitance. When the transmittance of the dielectric layer 240 in the virtual touch area 220 is smaller than that of the dielectric layer 240 in the touch area 210, the transmittance of the touch layer in the virtual touch area 220 is smaller than that of the touch layer in the touch area 210, so that the light blocking effect of the touch layer in the virtual touch area 220 on the edge sub-pixels is larger than that of the touch layer in the touch area 210 on the other sub-pixels, and therefore, the light emitted by the edge sub-pixels covered by the virtual touch area 220 is relative to the light emitted by the sub-pixels covered by the touch area 210, the light emitted by the edge sub-pixels is less in light quantity transmitted through the light emitting surface of the display panel, and therefore, the light emitting brightness of the display area corresponding to the edge sub-pixels is lower, and further, the problem of edge color edges or saw teeth of the display panel is improved, and the display effect of the display panel is improved.
Optionally, when the transmittance of the dielectric layer 240 in the virtual touch area 220 is smaller than the transmittance of the dielectric layer 240 in the touch area 210, the distribution density of the first touch electrode 250 and/or the second touch electrode 260 in the virtual touch area 220 may be set to be greater than the distribution density in the touch area 210. The light transmittance of the virtual touch area 220 can be further reduced, so that the light quantity of the light emitted by the edge sub-pixels transmitting the light emitting surface of the display panel can be further reduced, the problem of color edges or saw teeth of the edge of the display panel is further improved, and the display effect of the display panel is improved.
Alternatively, the dielectric layer may have a light transmittance of 50% to 90%. The light blocking effect of the virtual touch area can be adjusted according to the need by adjusting the light transmittance of the dielectric layer, so that the light quantity of the light emitted by the edge sub-pixels covered by the virtual touch area and transmitted to the light emitting surface of the display panel can be adjusted, and the problem of edge color edges or saw teeth can be better improved according to the need. Illustratively, the material of the dielectric layer includes silicon oxynitride. The light transmittance of the dielectric layer formed by the silicon oxynitride is adjusted by adjusting the content of nitrogen oxide in the silicon oxynitride. In the above process, the nitrogen-oxygen content of the dielectric layer in the virtual touch area is set to be different from the nitrogen-oxygen content of the dielectric layer in the touch area, so that the light transmittance of the dielectric layer in the virtual touch area is smaller than that of the dielectric layer in the touch area.
Fig. 7 is a schematic cross-sectional view of another display panel according to an embodiment of the invention. As shown in fig. 7, the thickness of the dielectric layer 240 in the virtual touch area 220 is greater than the thickness of the dielectric layer 240 in the touch area 210.
Specifically, the light transmittance of the dielectric layer 240 is inversely proportional to the thickness of the dielectric layer 240. The thicker the thickness of the dielectric layer 240, the lower the transmittance of the dielectric layer 240. By setting the thickness of the dielectric layer 240 in the virtual touch area 220 to be greater than the thickness of the dielectric layer 240 in the touch area 210, the transmittance of the dielectric layer 240 in the virtual touch area 220 is smaller than the transmittance of the dielectric layer 240 in the touch area 210. When the transmittance of the dielectric layer 240 in the virtual touch area 220 is smaller than that of the dielectric layer 240 in the touch area 210, the transmittance of the touch layer in the virtual touch area 220 is smaller than that of the touch layer in the touch area 210, so that the light blocking effect of the touch layer in the virtual touch area 220 on the edge sub-pixels is larger than that of the touch layer in the touch area 210 on the other sub-pixels, and therefore, the light emitted by the edge sub-pixels covered by the virtual touch area 220 is relative to the light emitted by the sub-pixels covered by the touch area 210, the light emitted by the edge sub-pixels is less in light quantity transmitted through the light emitting surface of the display panel, and therefore, the light emitting brightness of the display area corresponding to the edge sub-pixels is lower, and further, the problem of edge color edges or saw teeth of the display panel is improved, and the display effect of the display panel is improved. The thickness of the dielectric layer 240 in the virtual touch area 220 is greater than 120nm and less than 800nm, which can realize the insulation effect of the dielectric layer 240 and the light transmittance of the dielectric layer 240 within 50% -90%, thereby realizing the light blocking effect of the virtual touch area adjusted as required. When the thickness of the dielectric layer 240 in the virtual touch area 220 may be greater than 120nm and less than 800nm, the thickness of the dielectric layer 240 in the touch area 220 may be in a range of greater than 120nm and less than 500nm.
The embodiment of the invention also provides a display device. Fig. 8 is a schematic structural diagram of a display device according to an embodiment of the present invention. As shown in fig. 8, the display device 30 includes a display panel 31 provided in any embodiment of the present invention, and the display device 30 may be a mobile phone, a computer, a tablet, a wearable device, or the like, and the display device 30 includes a pixel structure provided in any embodiment of the present invention, so that the same beneficial effects are obtained, and will not be described herein.
Note that the above is only a preferred embodiment of the present invention and the technical principle applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, while the invention has been described in connection with the above embodiments, the invention is not limited to the embodiments, but may be embodied in many other equivalent forms without departing from the spirit or scope of the invention, which is set forth in the following claims.
Claims (12)
1. The display panel is characterized by comprising a display substrate and a touch control layer positioned on the display side of the display substrate;
the display substrate is provided with a display area and a non-display area arranged around the display area, and comprises edge sub-pixels which are positioned in the edge area of the display area and adjacent to the non-display area; the touch layer comprises a touch area and a virtual touch area, the virtual touch area covers at least part of the area of the edge sub-pixel in the direction perpendicular to the display substrate, and the light transmittance of the touch layer in the virtual touch area is smaller than that of the touch layer in the touch area;
the touch layer comprises a plurality of touch units, and the distribution density of the touch units in the virtual touch area is greater than that of the touch units in the touch area.
2. The display panel according to claim 1, wherein the edge sub-pixels include a first edge sub-pixel and a second edge sub-pixel, the first edge sub-pixel being disposed to protrude toward the non-display area with respect to the second edge sub-pixel, the virtual touch area covering a portion of the first edge sub-pixel protruding toward the non-display area in a direction perpendicular to the display substrate.
3. The display panel of claim 1, wherein an area of the touch unit in the virtual touch area is smaller than an area of the touch unit in the touch area.
4. The display panel of claim 1, wherein the touch layer comprises touch electrodes, and a distribution density of the touch electrodes in the virtual touch area is greater than a distribution density of the touch electrodes in the touch area.
5. The display panel according to claim 4, wherein the touch electrodes include a first touch electrode and a second touch electrode that are disposed in different layers, a distribution density of the first touch electrode in the virtual touch area is greater than a distribution density of the first touch electrode in the touch area, and/or a distribution density of the second touch electrode in the virtual touch area is greater than a distribution density of the second touch electrode in the touch area.
6. The display panel of claim 1, wherein the touch layer comprises a dielectric layer having a light transmittance in the virtual touch area that is less than a light transmittance of the dielectric layer in the touch area.
7. The display panel of claim 6, wherein the dielectric layer has a light transmittance of 50% to 90%.
8. The display panel of claim 7, wherein the material of the dielectric layer comprises silicon oxynitride.
9. The display panel of claim 6, wherein a thickness of the dielectric layer in the virtual touch area is greater than a thickness of the dielectric layer in the touch area.
10. The display panel of claim 9, wherein the dielectric layer has a thickness in the virtual touch area greater than 120nm and less than 800nm.
11. The display panel according to claim 1, wherein the virtual touch area extends from an edge of the display area to a center of the display area by a length of 25 μm to 50 μm.
12. A display device comprising the display panel of any one of claims 1-11.
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