CN111176488A - Display panels and display devices - Google Patents
Display panels and display devices Download PDFInfo
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- CN111176488A CN111176488A CN202010002152.0A CN202010002152A CN111176488A CN 111176488 A CN111176488 A CN 111176488A CN 202010002152 A CN202010002152 A CN 202010002152A CN 111176488 A CN111176488 A CN 111176488A
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- G—PHYSICS
- G06—COMPUTING OR CALCULATING; 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 OR CALCULATING; 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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Abstract
本发明公开了一种显示面板和显示装置。该显示面板包括显示基板和位于显示基板显示侧的触控层；显示基板具有显示区和围绕显示区设置的非显示区，显示基板包括位于显示区边缘区域且与非显示区相邻的边缘子像素；触控层包括触控区和虚拟触控区，在垂直于显示基板的方向上，虚拟触控区覆盖边缘子像素的至少部分区域，触控层在虚拟触控区的透光率小于触控层在触控区的透光率。改善了显示面板边缘彩边或锯齿的问题，提高了显示面板的显示效果。另外，虚拟触控区的触控层与触控区的触控层可以在同一工艺中形成，从而可以在改善显示面板边缘彩边或锯齿的同时，不会额外增加制作虚拟触控区的触控层的工艺。
The invention discloses a display panel and a display device. The display panel includes a display substrate and a touch layer located on the display side of the display substrate; the display substrate has a display area and a non-display area arranged around the display area, and the display substrate includes an edge sub-area located in an edge area of the display area and adjacent to the non-display area The touch layer includes a touch area and a virtual touch area. In the direction perpendicular to the display substrate, the virtual touch area covers at least part of the edge sub-pixels, and the light transmittance of the touch layer in the virtual touch area is less than The light transmittance of the touch layer in the touch area. The problem of color fringing or jagged edges of the display panel has been improved, and the display effect of the display panel has been 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 color fringing or jaggies on the edge of the display panel can be improved without additionally increasing the number of touch points in the virtual touch area. control layer process.
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 of single-color sub-pixel protrusion, so that the edge of the display panel has the problems of colored edges or sawtooth-shaped stripes and the like, and the display effect of the display panel is influenced.
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 are 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 partial area of the edge sub-pixels 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 scheme ensures that the light quantity of the light emitted by the edge sub-pixel 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-pixel is reduced, the problem of edge color 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 on the same layer, that is, 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 edge color or the sawtooth of the display panel can be improved, the process for manufacturing the touch layer of the virtual touch area cannot be additionally increased, and the process 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 to protrude toward the non-display area relative to the second edge sub-pixel, and in a direction perpendicular to the display substrate, the virtual touch area covers a portion of the first edge sub-pixel protruding toward the non-display area.
Optionally, the touch layer includes a plurality of touch units, and the distribution density of the touch units in the virtual touch area is greater than the distribution density of the touch units 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, 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 edge color or sawtooth of the display panel is solved, and the display effect of the display panel is improved. Moreover, the touch unit of the virtual touch area and the touch unit of the touch area are arranged on the same layer, that is, the touch unit of the virtual touch area and the touch unit of the touch area can be formed in the same process, so that the process for manufacturing the touch unit of the virtual touch area is not additionally added while the edge color or the sawtooth of the display panel is improved, and the process flow for manufacturing the display panel is avoided being added.
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 units in the virtual touch area is greater than that of the touch units in the touch area, so that the light transmittance of the virtual touch area is less than that of the touch area.
Optionally, the touch layer includes touch electrodes, and the distribution density of the touch electrodes in the virtual touch area is greater than the distribution density of the touch electrodes in the touch area;
preferably, the touch electrodes include first touch electrodes and second touch electrodes disposed in different layers, and the distribution density of the first touch electrodes in the virtual touch area is greater than the distribution density of the first touch electrodes in the touch area, and/or the distribution density of the second touch electrodes in the virtual touch area is greater than the distribution density of the second touch electrodes 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-pixel and 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-pixel is reduced, the problem of edge color or sawtooth of the display panel is solved, and the display effect of the display panel is improved. Moreover, the touch electrode of the virtual touch area and the touch electrode of the touch area are arranged on the same layer, that is, 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 is not additionally added while the edge color or the sawtooth of the display panel is improved, and the process flow for manufacturing the display panel is avoided being added.
Optionally, the touch layer includes a dielectric layer, and a light transmittance of the dielectric layer in the virtual touch region is smaller than a light transmittance of the dielectric layer in the touch region. The scheme can further enable the light transmittance of the virtual touch area to be smaller than that of the touch area, and 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 edge color or sawtooth of the display panel is further solved, and the display effect of the display panel is improved.
Optionally, the light transmittance of the dielectric layer is 50% to 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 needs, and then the light quantity of 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 edge or sawtooth can be better solved according to needs. 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 800 nm. The scheme can realize the insulation effect of the dielectric layer and can also ensure that the light transmittance of the dielectric layer is within 50% -90%, thereby realizing the light blocking effect of the virtual touch area adjusted according to the requirement.
Optionally, the edges of the virtual touch area adjacent to the touch area are linear, zigzag or arc. In the scheme, the shape of the virtual touch area and the adjacent edge of the touch area can be adaptively changed according to the edge shape of the edge sub-pixel of the display panel, so that the problem of edge color margin or sawtooth of different display screens such as a special-shaped screen, a rectangular screen and the like is solved.
Optionally, the length of the virtual touch area extending from the edge of the display area to the center of the display area is 25 μm to 50 μm. The scheme can cover the part corresponding to the edge color edge when the display panel displays, and can avoid the problem of reducing the light-emitting rate of the display panel caused by the fact that the virtual touch area covers other sub-pixels.
In a second aspect, an embodiment of the present invention further provides a display device, including the display panel provided in any embodiment of the present invention.
According to the technical scheme of the embodiment of the invention, 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-pixels in the direction vertical 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 quantity transmitted to the light-emitting surface of the display panel by the light emitted by the edge sub-pixels is smaller, the light-emitting brightness of the display area corresponding to the edge sub-pixels is reduced, the problem of edge color or sawtooth 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 are arranged on the same layer, that is, 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 edge color or the sawtooth of the display panel can be improved, the process for manufacturing the touch layer of the virtual touch area cannot be additionally increased, and the process for manufacturing the display panel is prevented from being increased.
Drawings
Fig. 1 is a schematic structural 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 structure diagram of a display panel according to an embodiment of the present invention;
fig. 7 is a schematic cross-sectional view illustrating 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 present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
The display panel includes a plurality of pixel units, each including a plurality of sub-pixels. When the pixel is arranged, in order to ensure the completeness of the sub-pixels, in the edge area of the display panel, the sub-pixels cannot be completely matched with the boundary line at the edge to form a saw-toothed notch, so that when the display panel displays, the problem of poor display such as colored edges or saw teeth is formed at the edge, and the display effect of the display panel is influenced. Fig. 1 is a schematic structural 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 of different colors are arranged in an array on the display panel 10, where R is a red sub-pixel, G is a green sub-pixel, and B is a blue sub-pixel, 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 green sub-pixels, and the last row only includes red sub-pixels, so that an edge green edge appears in a display area corresponding to the first row of the display panel 10, and an edge red edge appears in a display area corresponding to the last row of the display panel, thereby affecting the display effect of the display panel.
In view of the above technical problems, an embodiment of the present invention provides a display panel. The display panel comprises a display substrate and a touch 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, the virtual touch area covers at least partial area of the edge sub-pixels 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 edge of the pixel structure, and the outer contour of the non-display area, which is formed by a plurality of adjacent edge sub-pixels, is not matched with the contour line at the corresponding position of the edge of the display area. For example, in a shaped screen (colloquially referred to as a bang screen), an edge sub-pixel is a sub-pixel located at the very edge of the pixel structure and near the shaped region; in the rectangular screen with the chamfer, the edge sub-pixel is the sub-pixel which is positioned at the most edge of the pixel structure and is close to the chamfer area; in addition, for some pixel structures with special pixel arrangement, such as the pixel structure shown in fig. 1, since each sub-pixel in each pixel unit is arranged in a delta shape, in a certain arrangement direction (e.g., row direction), an outer contour, which is close to the non-display area and is formed by the sub-pixel at the edge, presents a significant concave-convex line, which is not matched with a straight line contour line at a position corresponding to the edge of the display area, and at this time, the edge sub-pixel is the sub-pixel which is located at the edge of the pixel structure and is close to the straight line contour line. In the design of the display panel, due to the existence of the edge sub-pixels, the display area may exhibit a color fringing or jaggy phenomenon in the area corresponding to the edge sub-pixels when displaying an image.
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 in the touch control area can be connected with the touch control circuit to enable the touch control units to have a touch control function, and the touch control units in the virtual touch control area are not connected with the touch control circuit to enable the touch control units not to have the touch control function. The light transmittance of the touch layer in the virtual touch area is smaller than that of the touch layer in the touch area, when the virtual touch area covers at least part of the area of the edge sub-pixels, light emitted by the edge sub-pixels is blocked by the touch layer in the virtual touch area, so that the light quantity transmitted to the light-emitting surface of the display panel by the light emitted by the edge sub-pixels is smaller, the light-emitting brightness of the display area corresponding to the edge sub-pixels is reduced, the problem of color edges or sawteeth 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 are arranged on the same layer, that is, 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 edge color or the sawtooth of the display panel can be improved, the process for manufacturing the touch layer of the virtual touch area cannot be additionally increased, and the process for manufacturing the display panel is prevented from being increased.
Exemplarily, 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 disposed 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 an edge subpixel 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 in the virtual touch area 220 is relatively low, and the amount of light emitted by the edge sub-pixel P1 at least partially covered by the virtual touch area 220 and transmitted to the light emitting surface of the display panel is relatively low, so that the light emitting luminance of the display area 110 corresponding to the edge sub-pixel P1 is relatively low, and thus the problem of poor display of the display area 110 corresponding to the edge sub-pixel P1 of the display panel is solved, and the display effect of the display panel is improved.
It should be noted that fig. 2 exemplarily shows that the display panel is a rectangular display panel, and the edge subpixels P1 are the first row and the last row of subpixels of the display panel. In some embodiments, the edge sub-pixels may also be a first column of sub-pixels and a last column of sub-pixels of the display panel for different pixel arrangements or designs of the edges of the display area. In other embodiments, when the display panel is a special-shaped display panel, the edge sub-pixels may further include sub-pixels at the edge of the special-shaped area. Fig. 3 is a schematic structural diagram of another display panel according to an embodiment of the present 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 may at least partially cover the edge sub-pixels P1 in different rows to reduce the amount of light emitted by the edge sub-pixels P1 and transmitted to the light exit surface of the display panel, so that the luminance of the display area 110 corresponding to the edge sub-pixels P1 is relatively low, thereby improving the problem of poor display in 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 to protrude 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.
Exemplarily, referring to fig. 1 and 2, in the first row of edge subpixels, the green subpixel G is a first edge subpixel, the blue subpixel B is a second edge subpixel, and the green subpixel G is disposed to be convex with respect to the blue subpixel B toward the non-display region 120. At this time, in the direction perpendicular to the display substrate, the virtual touch area is arranged to cover the portion of the green sub-pixel G protruding toward the non-display area 120, so that the transmittance of the portion of the light protruding toward the non-display area 120 by the green sub-pixel G can be reduced, the emission luminance of the covered vertical light of the green sub-pixel G is reduced, and the problem of edge color (green line) of the display area is further improved.
Therefore, the virtual touch area is arranged to cover the part, protruding towards the non-display area, of the edge sub-pixel relative to the second edge sub-pixel, of the edge sub-pixel, so that the part corresponding to the poor edge display in the display of the display panel can be covered, and the display effect of the display panel is improved.
Optionally, the length of the virtual touch area extending from the edge of the display area to the center of the display area is 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 part of the edge sub-pixel (the first edge sub-pixel) protruding towards the non-display area relative to other sub-pixels (the second edge sub-pixels) 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 μm to 50 μm, the virtual touch area covers the part of the edge sub-pixel protruding towards the non-display area relative to other sub-pixels, not only can the part corresponding to the edge display failure when the display panel displays be covered, but also the light output rate of the display panel is prevented from being reduced due to the fact that the virtual touch area covers other sub-pixels.
Optionally, the orthographic projection of the edge of the virtual touch area adjacent to the touch area on the display substrate is linear, zigzag or arc.
Specifically, the shape of the orthographic projection of the virtual touch area and the adjacent edge of 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 reference to fig. 2, when some 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 orthographic 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 manner near the chamfered region, the orthographic projection of the edge of the virtual touch region 220 adjacent to the touch region 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 shape near the chamfered region, the orthographic projection of the edge of the virtual touch region 220 adjacent to the touch region 210 on the display substrate may also be in a zigzag shape. The shape of the orthographic projection of the virtual touch area 220 and the adjacent edge of 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 present 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 each embodiment of the present invention, the distribution density refers to the area occupied by the touch units or the touch electrodes 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 in 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. The light transmittance of the touch unit 201 is relatively low, 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 less than that of the touch area 210, so that when the virtual touch area 220 covers at least a partial area of the edge sub-pixel P1, light emitted by the edge sub-pixel P1 is blocked by the touch layer of the virtual touch area 220, and the amount of light transmitted to the light-emitting side of the display panel is relatively small, thereby reducing the light-emitting luminance 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 reference to fig. 5, the area of the touch unit 201 is larger than the area 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 partial area of the edge sub-pixel P1, thereby preventing the touch unit 201 of the virtual touch area 220 from weakening the light quantity transmitted from the sub-pixel of the touch area 210 to the light exit surface of the display panel, and ensuring the light emission brightness of the display panel.
It should be noted that the shape of the touch unit 201 is not particularly limited, and fig. 5 only exemplarily shows one shape of the touch unit 201. In other embodiments, the touch unit 201 may also have other shapes such as a diamond shape.
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 the distribution density of the touch units in the touch area, the smaller the area of the touch units 201 is, the more densely the touch units 201 are arranged in the same area, which is beneficial to the implementation of the setting of the touch units 201 in the virtual touch area 220, and at the same time, the transmittance of the virtual touch area 220 to light is reduced, that is, the transmittance of the virtual touch area 220 is less than that of the touch area, so that the light quantity of at least a partial area of the edge sub-pixel P1 covered by the virtual touch area 220, which is transmitted to the light-emitting surface of the display panel, is reduced, thereby 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.
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 electrode 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 electrode plate. The touch electrode may be made of metal, or may be made of a semiconductor conductive material, such as indium tin oxide. The light transmittance of the touch electrode is relatively low, and when the touch electrode is disposed on the light exit side of the display substrate 100, the light emitted from the sub-pixels that are orthographically projected and covered on the display substrate 100 by the touch electrode is blocked by the touch electrode, and the amount of light transmitted to the light exit surface of the display panel is reduced compared to the light emitted from the sub-pixels that are not orthographically projected and covered on the display substrate 100 by the touch electrode. Therefore, when 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, the light blocking effect of the touch electrodes on the edge sub-pixel P1 corresponding to the virtual touch area 220 is greater than the light blocking effect of the touch electrodes 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 less than the light emitted by the sub-pixel covered by the touch area 210, and the light quantity transmitted to the light emitting surface of the display panel by the light emitted by the edge sub-pixel P1 is less, therefore, the luminance of the display area 110 corresponding to the edge sub-pixel P1 is lower, the problem of poor display of the display area 110 corresponding to the edge sub-pixel P1 of the display panel is solved, and the display effect of the display panel is.
In other embodiments, the touch electrodes include first touch electrodes and second touch electrodes disposed in different layers, the distribution density of the first touch electrodes in the virtual touch area is greater than the distribution density of the first touch electrodes in the touch area, and/or the distribution density of the second touch electrodes in the virtual touch area is greater than the distribution density of the second touch electrodes in the touch area.
Specifically, the first touch electrode and the second touch electrode are both conductive electrodes and can be respectively used as a first capacitor plate and a second capacitor plate of a touch capacitor in the capacitive touch electrode, and orthographic projections of the first touch electrode and the second touch electrode on the display substrate are overlapped to form the touch capacitor. The first touch electrode and the second touch electrode can be made of metal or semiconductor conductive material, so that the light transmittance of the first touch electrode and the second touch electrode is low. When the distribution density of the first touch electrodes in the virtual touch area is greater than that of the first touch electrodes in the touch area, the light blocking effect of the first touch electrodes on the edge sub-pixels corresponding to the virtual touch area is greater than that of the first touch electrodes on the sub-pixels corresponding to the touch area. Therefore, the light emitted by the edge sub-pixels covered by the virtual touch area has less light quantity transmitting the light-emitting surface of the display panel compared with the light emitted by the sub-pixels covered by the touch area, and the luminance of the display area corresponding to the edge sub-pixels is lower, so that the problem of color fringes or sawteeth at the edge of the display panel is solved, and the display effect of the display panel is improved. Similarly, when the distribution density of the second touch electrodes in the virtual touch area is greater than that of the second touch electrodes in the touch area, the light blocking effect of the second touch electrodes on the edge sub-pixels corresponding to the virtual touch area is greater than that of the second touch electrodes on the sub-pixels corresponding to the touch area. Therefore, the light emitted by the edge sub-pixels covered by the virtual touch area has less light quantity transmitting the light-emitting surface of the display panel compared with the light emitted by the sub-pixels covered by the touch area, and the luminance of the display area corresponding to the edge sub-pixels is lower, so that the problem of color fringes or sawteeth at the edge of the display panel is solved, and the display effect of the display panel is improved.
In addition, the distribution density of the first touch electrodes in the virtual touch area is greater than that of the first touch electrodes in the touch area, and the distribution density of the second touch electrodes in the virtual touch area is greater than that of the second touch electrodes in the touch area, so that the light blocking effect of the first touch electrodes on the edge sub-pixels corresponding to the virtual touch area is greater than that of the first touch electrodes on the sub-pixels corresponding to the touch area, and the light blocking effect of the second touch electrodes on the edge sub-pixels corresponding to the virtual touch area is greater than that of the second touch electrodes on the sub-pixels corresponding to the touch area. Therefore, compared with the light emitted by the sub-pixels covered by the touch area, the light emitted by the edge sub-pixels is less in light quantity transmitted through the light-emitting surface of the display panel, and the light-emitting brightness of the display area corresponding to the edge sub-pixels is lower, so that the problem of edge color fringe or sawtooth 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 diagram of a display panel according to an embodiment of the present invention. As shown in fig. 6, the touch layer of the display panel includes a dielectric layer 240, and the light transmittance of the dielectric layer 240 in the virtual touch region 220 is less than that of the dielectric layer 240 in the touch region 210.
Specifically, the dielectric layer 240 is disposed between the first touch electrode 250 and the second touch electrode 260 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 light transmittance of the dielectric layer 240 in the virtual touch area 220 is smaller than the light transmittance of the dielectric layer 240 in the touch area 210, the light transmittance of the touch layer in the virtual touch area 220 is smaller than the light transmittance 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 greater than the light blocking effect of the touch layer in the touch area 210 on other sub-pixels, and therefore, the light emitted by the edge sub-pixels covered by the virtual touch area 220 is smaller than the light emitted by the sub-pixels covered by the touch area 210, and the light quantity of the light emitted by the edge sub-pixels transmitted through 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 lower, the problem of color fringes or jaggies at the.
Optionally, when the light transmittance of the dielectric layer 240 in the virtual touch area 220 is smaller than the light 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 and transmitted through the light emitting surface of the display panel can be further reduced, the problem of edge color fringes or sawteeth of the display panel is further solved, and the display effect of the display panel is improved.
Alternatively, the dielectric layer may have a light transmittance of 50% to 90%. By adjusting the light transmittance of the dielectric layer, the light blocking effect of the virtual touch area can be adjusted as required, and then the light quantity of 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 or sawtooth can be better solved as required. 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 and oxygen in the silicon oxynitride. In the above process, by setting that 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, 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 structure diagram 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 region 220 is greater than the thickness of the dielectric layer 240 in the touch region 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 light transmittance of the dielectric 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 light transmittance of the dielectric layer 240 in the virtual touch area 220 is smaller than the light transmittance of the dielectric layer 240 in the touch area 210. When the light transmittance of the dielectric layer 240 in the virtual touch area 220 is smaller than the light transmittance of the dielectric layer 240 in the touch area 210, the light transmittance of the touch layer in the virtual touch area 220 is smaller than the light transmittance 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 greater than the light blocking effect of the touch layer in the touch area 210 on other sub-pixels, and therefore, the light emitted by the edge sub-pixels covered by the virtual touch area 220 is smaller than the light emitted by the sub-pixels covered by the touch area 210, and the light quantity of the light emitted by the edge sub-pixels transmitted through 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 lower, the problem of color fringes or jaggies at the. Exemplarily, the thickness of the dielectric layer 240 in the virtual touch area 220 is greater than 120nm and less than 800nm, which not only can realize the insulating effect of the dielectric layer 240, but also can make the light transmittance of the dielectric layer 240 within 50% to 90%, thereby realizing the light blocking effect of adjusting the virtual touch area 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 greater than 120nm and less than 500 nm.
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 the display panel 31 provided in any embodiment of the present invention, the display device 30 may be a mobile phone, a computer, a tablet, or a wearable device, and the like, and the display device 30 includes the pixel structure provided in any embodiment of the present invention, so that the same advantageous effects are also provided, and details are not repeated herein.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (10)
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