CN115016183B - Display panel and display device - Google Patents
Display panel and display device Download PDFInfo
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- CN115016183B CN115016183B CN202210754898.6A CN202210754898A CN115016183B CN 115016183 B CN115016183 B CN 115016183B CN 202210754898 A CN202210754898 A CN 202210754898A CN 115016183 B CN115016183 B CN 115016183B
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- 238000001125 extrusion Methods 0.000 abstract description 10
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Classifications
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1339—Gaskets; Spacers; Sealing of cells
- G02F1/13394—Gaskets; Spacers; Sealing of cells spacers regularly patterned on the cell subtrate, e.g. walls, pillars
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1339—Gaskets; Spacers; Sealing of cells
- G02F1/13396—Spacers having different sizes
-
- 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
- G09F9/33—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 being semiconductor devices, e.g. diodes
-
- 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
- G09F9/33—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 being semiconductor devices, e.g. diodes
- G09F9/335—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 being semiconductor devices, e.g. diodes being organic light emitting diodes [OLED]
Abstract
The application provides a display panel and a display device, comprising: the first substrate and the second substrate are oppositely arranged, a first spacer, a second spacer and a third spacer are arranged between the first substrate and the second substrate, the first spacer is a main spacer, the second spacer is an auxiliary spacer, at least part of the third spacers are arranged in a dividing area, the dividing area is positioned in the central area of the display panel, the dividing area divides the display panel into at least 2 display areas, the ratio of the length to the width of the display area is larger than a threshold value, the dividing area where part of the third spacers are positioned is equivalent to pseudo frame glue, the display panel with a larger size is divided into a plurality of display panels with smaller length-width ratios larger than the threshold value, the third spacers of the dividing area can be utilized to rapidly dissipate the extrusion force when the extrusion force is received, the deformation of the display panel is reduced, the probability of wiping ghost phenomenon of the display panel is reduced, and the uniformity of the display panel in a dark state is improved.
Description
Technical Field
The present application relates to the field of display technologies, and in particular, to a display panel and a display device.
Background
With the rapid development of terminal devices, higher demands are being put on the display of the terminal devices. The current display technology field is mainly divided into Liquid Crystal Display (LCD), organic Light Emitting Display (OLED) and Micro light emitting diode (Micro-LED) display.
Display panels based on liquid crystal display are now applied to various fields, such as vehicle-mounted display devices. The display panel in the current in-vehicle display apparatus is small in size, for example, between 10 inches and 12.3 inches. With the development of vehicle-mounted display devices, there is a demand for large-screen display, for example, the center control display panel of the vehicle-mounted display device can be 14-17 inches, the display panel combined with the meter and the center control device can be 23-28 inches, and a larger size of the display panel of 30-50 inches is also possible in the future.
However, as the size of the display panel increases, a wiping ghost (push mura) phenomenon occurs in the display panel, which affects the display effect of the display panel.
Disclosure of Invention
Accordingly, an object of the present application is to provide a display panel and a display device capable of reducing the probability of occurrence of a wiping ghost phenomenon of the display panel, improving the uniformity of the display panel in a dark state, and improving the display effect of the display panel.
An embodiment of the present application provides a display panel including:
a first substrate and a second substrate disposed opposite to each other;
a first spacer, a second spacer and a third spacer are arranged between the first substrate and the second substrate, two sides of the first spacer are respectively contacted with the surfaces of the first substrate and the second substrate, and the second spacer is arranged on one side surface of the second substrate close to the first substrate;
at least part of the third spacers are arranged in a dividing area on the plane where the first substrate is located, the dividing area is located in the central area of the display panel, the dividing area divides the display panel into at least 2 display areas, and the ratio of the length to the width of the display areas is larger than a threshold value;
the third spacers are used for assisting the first spacers and the second spacers to provide support for the display panel when the display panel is pressed.
Optionally, at least a part of the third spacers are disposed in the same row or the same column of the dividing area, and the third spacers located in the same row or the same column divide the display panel into a plurality of symmetrical display areas.
Optionally, in a direction perpendicular to the plane of the first substrate, the length of the third spacer is at least greater than the length of the second spacer and less than or equal to the length of the first spacer.
Optionally, the first, second and third spacers located at the divided regions have a first density, and the first, second and third spacers located at other regions of the display panel than the divided regions have a second density, the first density being greater than the second density.
Optionally, the dividing area is located at 2 symmetrical display areas dividing the display panel.
Optionally, the number of the third spacers is proportional to the width of the sealant of the display panel.
Optionally, the third spacers are disposed in a number ranging from [4, 10].
Optionally, the number of the third spacers is gradually reduced in a direction approaching the edge of the display panel.
Optionally, the third spacer comprises a first raised structure and a first support structure;
the first protruding structure is arranged on one side surface of the second substrate, which is close to the first substrate;
the first supporting structure is arranged on one side surface of the first protruding structure away from the second substrate.
Optionally, the third spacer comprises a second raised structure and a second support structure;
the second bulge structure is arranged on one side surface of the first substrate, which is close to the second substrate;
the second supporting structure is arranged on one side surface of the second substrate, which is close to the first substrate;
the projections of the second bulge structure and the second support structure on the plane of the first substrate at least partially overlap;
when the display panel is pressed, the second protruding structure and the second supporting structure are in direct contact.
Optionally, in a direction perpendicular to a plane of the first substrate, a length of the third spacer is equal to a length of the first spacer;
both sides of the third spacer are respectively contacted with the surfaces of the first substrate and the second substrate.
An embodiment of the present application provides a display device including the display panel according to any one of the above embodiments.
The embodiment of the application provides a display panel and a display device, wherein the display panel comprises: the display panel comprises a first substrate, a second substrate, a first spacer, a second spacer and a third spacer, wherein the first substrate and the second substrate are oppositely arranged, the first spacer, the second spacer and the third spacer are arranged between the first substrate and the second substrate, two sides of the first spacer are respectively contacted with surfaces of the first substrate and the second substrate, namely the first spacer is a main spacer, the second spacer is arranged on one side surface of the second substrate close to the first substrate, namely the second spacer is an auxiliary spacer, at least part of the third spacers are arranged in a partition area on a plane where the first substrate is arranged, the partition area is arranged in a central area of a display panel, the partition area divides the display panel into at least 2 display areas, the ratio of the length to the width of the display area is larger than a threshold value, namely the partition area arranged by the part of the third spacers divides the display panel into at least 2 display areas with length to width ratio of the display area which are larger than the threshold value, and the third spacer is used for assisting the first spacer and the second spacer to provide support for the display panel when the display panel is subjected to extrusion force, namely the partition area where part of the third spacer is arranged is equivalent to frame glue, the partition area where the third spacer is arranged when the display panel is arranged, the extrusion force is large, the display panel is large in size, the display panel can be more uniform than the display panel, the situation of the display panel can be more easily and the display panel can be deformed when the situation is more than the threshold value is well when the display panel is more is subjected to the situation, and the situation is well is reduced, and the situation is well when the situation is reduced.
Drawings
In order to more clearly illustrate the embodiments of the application or the technical solutions in the prior art, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are some embodiments of the application and that other drawings may be obtained from these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram showing a wiping afterimage phenomenon of a display panel;
fig. 2 is a schematic structural diagram of a display panel according to an embodiment of the present application;
FIG. 3 is a schematic diagram showing a cross-sectional structure along the BB direction shown in FIG. 2 according to an embodiment of the present application;
fig. 4 is a schematic cross-sectional structure of another display panel according to an embodiment of the present application;
fig. 5 is a schematic cross-sectional structure of a display panel according to another embodiment of the present application;
FIG. 6 is a schematic top view of a second bump structure according to an embodiment of the present application;
FIG. 7 is a schematic top view of another second bump structure according to an embodiment of the present application;
fig. 8 is a schematic structural diagram of another display panel according to an embodiment of the present application;
fig. 9 is a schematic plan view of a display device according to an embodiment of the present application.
Detailed Description
In order that the above objects, features and advantages of the application will be readily understood, a more particular description of the application will be rendered by reference to the appended drawings.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application, but the present application may be practiced in other ways other than those described herein, and persons skilled in the art will readily appreciate that the present application is not limited to the specific embodiments disclosed below.
While the embodiments of the present application have been illustrated and described in detail in the drawings, the cross-sectional view of the device structure is not to scale in the general sense for ease of illustration, and the drawings are merely exemplary and should not be construed as limiting the scope of the application. In addition, the three-dimensional dimensions of length, width and depth should be included in actual fabrication.
With the rapid development of terminal devices, higher demands are being put on the display of the terminal devices. The current display technology field is mainly divided into Liquid Crystal Display (LCD), organic Light Emitting Display (OLED) and Micro light emitting diode (Micro-LED) display.
Display panels based on liquid crystal display are now applied to various fields, such as vehicle-mounted display devices. The display panel in the current in-vehicle display apparatus is small in size, for example, between 10 inches and 12.3 inches. With the development of vehicle-mounted display devices, there is a demand for large-screen display, for example, the center control display panel of the vehicle-mounted display device can be 14-17 inches, the display panel combined with the meter and the center control device can be 23-28 inches, and a larger size of the display panel of 30-50 inches is also possible in the future.
However, as the size of the display panel increases, a wiping ghost (push mura) phenomenon occurs in the display panel, which affects the display effect of the display panel.
Referring to fig. 1, a schematic diagram of a wiping residual image phenomenon of a display panel is shown. When a user presses and slides on the surface of the display panel according to the Z shape, wiping afterimage phenomenon occurs in the central area or the edge area of the display panel after pressing or sliding, and the dark state uniformity of the display panel is poor.
The inventor found that this is because as the size of the display panel becomes larger, the aspect ratio of the display panel becomes smaller, resulting in that when the display panel receives an external pressing force, the pressing force received by the display panel dissipates slowly and easily causes deformation which is difficult to recover, eventually forming a wiping ghost phenomenon.
Based on this, an embodiment of the present application provides a display panel and a display device, the display panel including: the display panel comprises a first substrate, a second substrate, a first spacer, a second spacer and a third spacer, wherein the first substrate and the second substrate are oppositely arranged, the first spacer, the second spacer and the third spacer are arranged between the first substrate and the second substrate, two sides of the first spacer are respectively contacted with surfaces of the first substrate and the second substrate, namely the first spacer is a main spacer, the second spacer is arranged on one side surface of the second substrate close to the first substrate, namely the second spacer is an auxiliary spacer, at least part of the third spacers are arranged in a partition area on a plane where the first substrate is arranged, the partition area is arranged in a central area of a display panel, the partition area divides the display panel into at least 2 display areas, the ratio of the length to the width of the display area is larger than a threshold value, namely the partition area arranged by the part of the third spacers divides the display panel into at least 2 display areas with length to width ratio of the display area which are larger than the threshold value, and the third spacer is used for assisting the first spacer and the second spacer to provide support for the display panel when the display panel is pressed, namely the partition area where the part of the third spacer is arranged is equivalent to a pseudo frame glue, the partition area where the third spacer is arranged when the display panel is pressed, the first spacer is arranged, the partition area and the display panel is large in size and the display panel is more uniform than the threshold value, the display area when the partition area is more than the threshold value is used, and the display area is more well when the display panel is more in the state, the situation is more well-stressed, the situation is reduced, and the display area is more well when the display area is more well than the threshold and the display area is well-shaped than the threshold, and the display area is well-shaped.
For a better understanding of the technical solutions and technical effects of the present application, specific embodiments will be described in detail below with reference to the accompanying drawings.
Referring to fig. 2, a schematic structural diagram of a display panel according to an embodiment of the application is shown. Fig. 3 is a schematic cross-sectional view along the BB direction shown in fig. 2 according to an embodiment of the present application.
The display panel provided by the embodiment of the application can be a liquid crystal display panel, and the liquid crystal display panel displays images by utilizing the optical anisotropy and birefringence characteristics of liquid crystal molecules. In the liquid crystal display panel, two substrates are disposed opposite to each other, electrodes for generating an electric field are formed on surfaces of the oppositely disposed substrates, a liquid crystal material is injected between the substrates, and then an electric field is generated by applying a voltage to the electrodes on the surfaces of the substrates to change an arrangement direction of liquid crystal molecules, so that light transmission amounts of the two substrates can be controlled, thereby obtaining an image desired to be displayed. The liquid crystal display panel generally uses a Thin Film Transistor (TFT) as a switching element.
In an embodiment of the present application, the display panel 100 includes a display area AA and a non-display area NA.
In an embodiment of the present application, the display panel 100 includes a first substrate 110 and a second substrate 120 disposed opposite to each other, and as shown with reference to fig. 3, the first substrate 110 and the second substrate 120 are generally transparent materials so as to transmit light. The first substrate 110 and the second substrate 120 may be bonded together by a frame sealant, a predetermined space may be provided between the first substrate 110 and the second substrate 120, and the liquid crystal layer 130 may be disposed in the predetermined space.
In an embodiment of the present application, a plurality of scan lines and a plurality of data lines are disposed on a side surface of the first substrate 110 adjacent to the second substrate 120, the plurality of scan lines are arranged at a predetermined distance along one direction, the plurality of data lines are disposed along a direction perpendicular to the scan lines, thereby defining a pixel region 111 of the display panel using the scan lines and the data lines, the pixel region 111 is disposed in an array, and a pixel electrode is formed on a surface of the pixel region 111. Thin Film Transistors (TFTs) are formed at intersections of the respective scanning lines and the respective data lines, and apply data signals of the data lines to the respective pixel electrodes by scanning signals applied from the scanning lines.
In an embodiment of the present application, a Black Matrix (BM) 121 and a Color Film (CF) layer 122 are disposed on a side surface of the second substrate 120 adjacent to the first substrate 110. The black matrix 121 serves to block light except the pixel region 111 from exiting, and the black matrix 121 may be formed of a black light-shielding organic material. The color film layer 122 corresponds to the pixel area 111, and the color film layer 122 is used for controlling the color of the light emitted to realize color display, so that the color film layer 122 includes color film layers with multiple colors, for example, the color film layer 122 may be a red color film layer, a green color film layer, or a blue color film layer. A common electrode for driving the liquid crystal to display an image is formed on the color film layer 122.
That is, the black matrix 121 is used to divide the color film layer 122 so as to realize that the color film layer 122 corresponds to each pixel region 111, and each pixel region 111 includes any one of a red color film layer, a green color film layer, and a blue color film layer. When the light emitted from the backlight source of the display panel passes through the pixel region 111, the light passes through the color film layer 122 with the corresponding color, so as to emit light with the corresponding color, such as red light, green light and blue light.
The liquid crystal material may be dropped between the first substrate 110 and the second substrate 120 through a drip irrigation process, and the first substrate 110 and the second substrate 120 need to be kept parallel as much as possible, so that the cell thickness (cell gap) of the display panel at each pixel region 111 is kept substantially uniform, that is, the thickness of the liquid crystal layer 130 at each pixel region 111 is uniform, and uniform display may be achieved. In order to achieve uniform display and to achieve a sufficient arrangement space of the liquid crystal layer 130, a spacer (spacer) needs to be provided between the first substrate 110 and the second substrate 120. The spacers may include spherical spacers and columnar spacers (PS).
The column spacers are disposed in the non-pixel region, and are used to support the first substrate 110 and the second substrate 120, preventing the first substrate 110 and the second substrate 120 from contacting, without affecting the display of the display panel. The material of the column spacer may be a photosensitive resin such as an acrylic resin. The columnar spacers may be formed by a photolithographic process. The cross section of the columnar spacer may be inverted trapezoidal.
In an embodiment of the present application, the column spacers may include a first spacer 141, a second spacer 142, and a third spacer 143. The two sides of the first spacer 141 are respectively contacted with the surfaces of the first substrate 110 and the second substrate 120, that is, the first spacer 141 is a main spacer (MPS) for supporting the first substrate 110 and the second substrate 120, so as to maintain the thickness of the display panel. Specifically, the black matrix 122 and the first substrate 110 are disposed on both sides of the first spacer 141, respectively.
The second spacer 142 is disposed on a side surface of the second substrate 120, which is close to the first substrate 110, and the length of the second spacer 142 is smaller than that of the first spacer 141 in a direction perpendicular to the plane of the first substrate 110, i.e., the second spacer 142 is an auxiliary spacer (SPS). The second spacers 142 are used to assist the first spacers 141 to support the display panel when the display panel is pressed, reducing bending deformation of the display panel. Specifically, the difference in length between the first and second spacers 141 and 142 ranges from 0.4 micrometers to 0.5 micrometers.
The first and second spacers 141 and 142 are generally disposed in the display panel in a regular manner to prevent the display panel from being collapsed when being pressed by an external force.
In the embodiment of the application, as the size of the display panel is increased, the length-width ratio of the display panel is continuously reduced, so that when the display panel is subjected to external extrusion force, the extrusion force applied to the display panel is slowly dissipated, deformation which is difficult to recover is easily caused, and finally, the wiping afterimage phenomenon is formed. Therefore, at least a part of the third spacers 143 may be disposed in the divided regions 101 of the display panel on the plane of the first substrate 110, the divided regions 101 may be located in the center region of the display panel, for example, the divided regions 101 may be the same regions to both end edges of the display panel, the divided regions 101 may divide the display panel into at least two display regions 102 as shown in fig. 2, and the ratio of the length and the width of each display region 102 may be greater than a threshold value. The third spacers 143 may be used to assist the first and second spacers 141 and 142 in providing support for the display panel when the display panel is pressed.
Specifically, the dividing region 101 may penetrate the first substrate 110 in a direction parallel to a plane in which the first substrate 110 is located. The dividing region 101 may extend through the first substrate 110 in a lateral direction, may extend through the first substrate 110 in a longitudinal direction, or may extend through the first substrate 110 in both the lateral and longitudinal directions. The dividing region 110 is located in the non-pixel region, and correspondingly, the third spacer 143 is also disposed in the non-pixel region, so as to avoid affecting the display of the display panel.
The threshold value may be determined according to actual situations, since the display panel has a large size and a low aspect ratio due to the occurrence of the wiping ghost phenomenon, in order to reduce the probability of the occurrence of the wiping ghost phenomenon, the large-sized display panel is divided into at least 2 display areas using the dividing areas 101 of the third spacers 143 provided in the number of portions, and the aspect ratio of the display area 102 may be greater than a certain threshold value. Typically the threshold may be 2.5 and the size of the display area may be less than 10.25 inches.
That is, the dividing area 101 where the part of the third spacers 143 are located corresponds to the dummy frame glue, and the display panel with a larger size is divided into a plurality of display areas 102 with smaller size and aspect ratio greater than the threshold value, so that when the display panel receives the extrusion force, the extrusion force is dissipated more quickly by using the third spacers 143 of the dividing area 101, the deformation of the display panel is reduced, correspondingly, the probability of wiping the residual shadow phenomenon of the display panel is reduced, the uniformity of the display panel in the dark state is improved, and the display effect of the display panel is improved.
It is found through research that after the dividing area 101 is provided with at least a part of the third spacers 143 to divide the display panel into the plurality of display areas 102, the deformation of the display panel is smaller, the extrusion force of the display panel dissipates faster, and the degree of the wiping ghost phenomenon is reduced compared with the display panel without the third spacers 143 under the same extrusion force.
In an embodiment of the present application, at least a part of the number of third spacers 143 may be disposed in the same row or column of the divided regions 101. If the dividing regions 101 laterally penetrate the first substrate 110, the third spacers 143 may be disposed on the same row of the dividing regions 101. If the divided regions 101 longitudinally penetrate the first substrate 110, the third spacers 143 may be disposed in the same row of the divided regions 101. If the dividing region 101 extends through the first substrate 110 in both the lateral and longitudinal directions, a part of the third spacers 143 are disposed on the same row of the dividing region 101, and the rest of the third spacers 143 are disposed on the same column of the dividing region 101.
By disposing the third spacers 143 in the same row or column, the third spacers 143 in the same row or column can function as dummy frame glue, and the display panel can be divided into a plurality of symmetrical display regions 102 having a small size and a large aspect ratio.
As an example, the third spacer 143 in the dividing region 101 may divide the display panel into 2 symmetrical display regions, as shown with reference to fig. 2.
In an embodiment of the present application, in order to realize that the third spacer 143 disposed in the dividing region 101 has the effect of a dummy frame sealant, the length of the third spacer 143 may be at least greater than the length of the second spacer 142 in a direction perpendicular to the plane in which the first substrate 110 is located, and the length of the third spacer 143 may be less than or equal to the length of the first spacer 141.
In the embodiment of the present application, the third spacers 143 may be arranged in various ways, for example, the conventional second spacers 143 in the dividing area 101 may be raised to form the third spacers 143, or the third spacers 143 may be added to the dividing area 101, so as to achieve the purpose of dividing the display panel into a plurality of display areas 102 by using the third spacers 143 in the dividing area 101.
In practical applications, if the third spacer 143 is added to the divided region 101, the first, second and third spacers 141, 142 and 143 located in the divided region 101 have a first density, and the first, second and third spacers 141, 142 and 143 located in other regions 103 of the display panel except the divided region 101 have a second density, the first density being greater than the second density, that is, the density of the spacers in the divided region 101 is greater than the density of the spacers in the other regions 103. Through set up more quantity, the higher spacer of density in the segmentation region 101, the spacer in the segmentation region 101 can play the effect of pseudo-frame glue like this, realizes utilizing quantity more, and the higher spacer of density cuts display panel into a plurality of display regions 102, reduces the probability that display panel appears wiping the ghost phenomenon, improves display panel's dark state homogeneity, improves display panel's wholeness ability.
Specifically, the third spacers 143 added to the dividing region 101 may be the raised second spacers 142 added to the dividing region, or the first spacers 141 added to the dividing region.
The manner in which the third spacers 143 are disposed is described in detail below:
as a possible implementation, the existing second spacers 143 in the dividing regions 101 are raised to form the third spacers 143. This allows selection from the existing second spacers 143 located in the dividing region 101, and determination of the number of raised second spacers 143, that is, the number of third spacers 143.
In practical applications, the number of the third spacers 143 may be proportional to the width of the sealant of the display panel, so as to achieve the purpose of dividing the display panel into a plurality of display areas 102 by using the third spacers 143. Specifically, the number of the third spacers 143 may be determined according to the frame glue width of the display panel and the size of each pixel of the display panel.
As an example, the frame glue width is typically 800 micrometers, the pixel density of the display panel is 151ppi, and the size of each pixel is 168.3 micrometers×168.3 micrometers, and the number of the third spacers 143 is about 4.
As another example, the frame glue is typically 800 micrometers, the pixel density of the display panel is 250ppi, and the size of each pixel is 101.5 micrometers×168.3 micrometers, and then the number of the third spacers 143 is about 10.
That is, when the pixel density of the display panel is between 151ppi and 250ppi, the number of the third spacers 143 may be 4 to 10.
In the embodiment of the present application, the existing second spacers 142 located in the dividing regions 101 are raised to form the third spacers 143, specifically, the following two forming methods are adopted:
a first possible implementation is that the third spacer 143 includes a first protruding structure 1431 and a first supporting structure 1432, as shown with reference to fig. 4. The first protruding structure 1431 is disposed on a side surface of the second substrate 120 close to the first substrate 110, and the first supporting structure 1432 is disposed on a side surface of the first protruding structure 1431 far from the second substrate 120. That is, the first supporting structure 1432 corresponds to the second spacer 142, i.e., a first protruding structure 1431 is added to the second spacer 142 for raising, so as to form the third spacer 143.
In practical applications, the black matrix 121 and the color film layer 122 are disposed on a side surface of the second substrate 120, which is close to the first substrate 110, and the flat layer 150 is further covered on the black matrix 121 and the color film layer 122, and the first protruding structure 1431 may be disposed on a side surface of the flat layer 150, which is close to the first substrate 110. The materials of the first protruding structures 1431 and the flat layer 150 may be the same in order to save the manufacturing cost of the display panel.
The material of the first bump structure 1431 may be a photo-sensitive coating (OC) paste and the material of the planarization layer 150 may be a non-photo-sensitive OC paste, so that the first bump structure 1431 may be formed using a photolithography process after the planarization layer 150 is formed. The thickness of the first protruding structures 1431 may be 0.1 to 0.3 micrometers, and the thickness of the first protruding structures 1431 is smaller than the difference in length between the first spacers 141 and the second spacers 143.
A second possible implementation manner is that the third spacer 143 includes a second protruding structure 1433 and a second supporting structure 1434, where the second protruding structure 1433 is disposed on a side surface of the first substrate 110 near the second substrate 120, the second supporting structure 1434 is disposed on a side surface of the second substrate 120 near the first substrate 110, and projections of the second protruding structure 1433 and the second supporting structure 1434 on a plane where the first substrate 110 is located at least partially overlap, and when the display panel is pressed, the second protruding structure 1433 and the second supporting structure 1434 are in direct contact, as shown in fig. 5. That is, the second support structure 1434 corresponds to the second spacer 142, i.e., the second spacer 142 is multiplexed into the second support structure 1434, and the second spacer 142 and the second protrusion structure 1433 form a butt structure so as to form the third spacer 143.
In practical applications, a light shielding Layer (LSM), a thin film transistor and a planarization layer are sequentially formed on a surface of the first substrate 110, which is close to the second substrate 120, wherein the thin film transistor includes an active layer (poly), a gate insulating layer, a gate electrode (M1), an interlayer insulating layer and a first metal layer (M2), and the planarization layer includes a second metal layer (M3) connected to the thin film transistor.
As an example, the second protrusion structure 1433 may be formed at the same time as the second protrusion structure 1433 is formed at the first substrate 110 using a current manufacturing process of forming a light shielding layer or an active layer so as to form a counter structure with the second spacer 142 in order to realize the effect of the dummy frame sealant. The thickness of the second protruding structures 1433 thus formed may be 1.5 micrometers, which is smaller than the difference in length between the first and second spacers 141 and 143.
As another example, the second bump structure 1433 may be formed using an additional manufacturing process, for example, using a currently existing manufacturing process of forming the gate insulating layer, the gate electrode, the interlayer insulating layer, the first metal layer, the second metal layer, and the planarization layer, that is, using a currently existing forming process, after forming the gate insulating layer, the gate electrode, the interlayer insulating layer, the first metal layer, the second metal layer, and the planarization layer, an additional process is added to form the second bump structure 1433 so as to form an opposite structure with the second spacer 142, so as to implement the effect of the dummy frame glue. The thickness of the second protruding structures 1433 thus formed may be 0.1 to 0.3 micrometers, which is smaller than the difference in length between the first and second spacers 141 and 143.
In practical applications, the second protruding structure 1433 and the second supporting structure 1434 form a top-aligning structure, and the projections of the second protruding structure 1433 and the second supporting structure 1434 on the plane of the first substrate 110 are perpendicular to each other, so that the top-aligning deviation of the top-aligning structure can be reduced, and the situation that the second protruding structure 1433 and the second supporting structure 1434 cannot be contacted with each other is avoided.
Specifically, the projection shape of the second protruding structure 1433 on the plane of the second substrate 120 may be a polygon or other shapes, for example, a rectangle or a diamond, and referring to fig. 6 or fig. 7, other shapes may be, for example, a circle, an ellipse, an irregular shape, or the like.
As another possible implementation manner, the third spacers 143 may be additionally added to the dividing area 101, so that the partition wall is formed by using the added third spacers 143, which plays a role of a pseudo frame glue, and the purpose of dividing the display panel into the plurality of display areas 102 by using the third spacers 143 in the dividing area 101 is achieved. Specifically, when the third spacers 143 are added to the dividing area 101, the number of the third spacers 143 is gradually reduced in the direction close to the edge of the display panel, so that the third spacers 143 are mainly concentrated in the central area of the display panel, and the third spacers 143 concentrated in the central area are used to form partition walls, so as to achieve the effect of dividing the display panel into a plurality of display areas 102, so as to reduce the probability of wiping the ghost phenomenon finally, and referring to fig. 8, a schematic structural diagram of another display panel is provided in an embodiment of the present application.
The specific increase in the number of the third spacers 143 may be determined according to the panel pressure or the liquid crystal amount range of the display panel.
In the embodiment of the present application, when the third spacers 143 are additionally added to the dividing region 101, the length of the third spacers 143 is equal to the length of the first spacers 141 in the direction perpendicular to the plane of the first substrate 110, and both sides of the third spacers 143 are respectively in contact with the surfaces of the first substrate 110 and the second substrate 120. That is, the additional third spacers 143 may be added with the first spacers 141 so that the additional first spacers 141 perform the function of pseudo-frame glue, and divide the display panel into the plurality of display areas 102 to reduce the degree of push mura.
Specifically, the material of the third spacer 143 is the same as that of the first spacer 141, and the third spacer 143 may be formed simultaneously with the first spacer 141 in order to reduce the manufacturing cost of the display panel.
An embodiment of the present application provides a display panel including: the display panel comprises a first substrate, a second substrate, a first spacer, a second spacer and a third spacer, wherein the first substrate and the second substrate are oppositely arranged, the first spacer, the second spacer and the third spacer are arranged between the first substrate and the second substrate, two sides of the first spacer are respectively contacted with surfaces of the first substrate and the second substrate, namely the first spacer is a main spacer, the second spacer is arranged on one side surface of the second substrate close to the first substrate, namely the second spacer is an auxiliary spacer, at least part of the third spacers are arranged in a partition area on a plane where the first substrate is arranged, the partition area is arranged in a central area of a display panel, the partition area divides the display panel into at least 2 display areas, the ratio of the length to the width of the display area is larger than a threshold value, namely the partition area arranged by the part of the third spacers divides the display panel into at least 2 display areas with length to width ratio of the display area which are larger than the threshold value, and the third spacer is used for assisting the first spacer and the second spacer to provide support for the display panel when the display panel is pressed, namely the partition area where the part of the third spacer is arranged is equivalent to a pseudo frame glue, the partition area where the third spacer is arranged when the display panel is pressed, the first spacer is arranged, the partition area and the display panel is large in size and the display panel is more uniform than the threshold value, the display area when the partition area is more than the threshold value is used, and the display area is more well when the display panel is more in the state, the situation is more well-stressed, the situation is reduced, and the display area is more well when the display area is more well than the threshold and the display area is well-shaped than the threshold, and the display area is well-shaped.
The embodiment of the application also provides a display device which comprises the display panel described in the embodiment.
Referring to fig. 9, a schematic plan view of a display device according to an embodiment of the application is shown. As can be seen, the display device 1000 includes the display panel 100, and the display panel 100 is the display panel 100 described in any of the above embodiments. The display device 1000 provided in the embodiment of the present application may be a mobile phone, a computer, a television, a vehicle-mounted display device, or other display devices with display functions, which is not particularly limited. The display device 1000 provided in the embodiment of the present application has the beneficial effects of the display panel 100 provided in the embodiment of the present application, and the specific description of the display panel in the above embodiment may be referred to specifically, and the embodiments of the present application are not repeated here.
The foregoing is merely a preferred embodiment of the present application, and the present application has been disclosed in the above description of the preferred embodiment, but is not limited thereto. Any person skilled in the art can make many possible variations and modifications to the technical solution of the present application or modifications to equivalent embodiments using the methods and technical contents disclosed above, without departing from the scope of the technical solution of the present application. Therefore, any simple modification, equivalent variation and modification of the above embodiments according to the technical substance of the present application still fall within the scope of the technical solution of the present application.
Claims (10)
1. A display panel, comprising:
a first substrate and a second substrate disposed opposite to each other;
a first spacer, a second spacer and a third spacer are arranged between the first substrate and the second substrate, two sides of the first spacer are respectively contacted with the surfaces of the first substrate and the second substrate, and the second spacer is arranged on one side surface of the second substrate close to the first substrate;
at least part of the third spacers are arranged in a dividing area on the plane where the first substrate is located, the dividing area is located in the central area of the display panel, the dividing area divides the display panel into at least 2 display areas, and the ratio of the length to the width of the display areas is larger than a threshold value;
the third spacer is used for assisting the first spacer and the second spacer to provide support for the display panel when the display panel is pressed;
at least a part of the third spacers are arranged on the same row or column of the dividing area, and the third spacers positioned on the same row or column divide the display panel into a plurality of symmetrical display areas;
and in the direction perpendicular to the plane where the first substrate is located, the length of the third spacer is at least greater than the length of the second spacer and is less than or equal to the length of the first spacer.
2. The display panel of claim 1, wherein the first, second, and third spacers located in the divided regions have a first density, and the first, second, and third spacers located in other regions of the display panel than the divided regions have a second density, the first density being greater than the second density.
3. The display panel of claim 1, wherein the dividing region is located at 2 display regions dividing the display panel into symmetry.
4. The display panel according to claim 1, wherein the number of the third spacers is proportional to the width of the sealant of the display panel.
5. The display panel according to claim 4, wherein the third spacers are provided in a number ranging from [4, 10].
6. The display panel according to claim 1, wherein the third spacers are provided in a gradually decreasing number in a direction approaching an edge of the display panel.
7. The display panel of any one of claims 1-5, wherein the third spacer comprises a first raised structure and a first support structure;
the first protruding structure is arranged on one side surface of the second substrate, which is close to the first substrate;
the first supporting structure is arranged on one side surface of the first protruding structure away from the second substrate.
8. The display panel of any one of claims 1-5, wherein the third spacer comprises a second raised structure and a second support structure;
the second bulge structure is arranged on one side surface of the first substrate, which is close to the second substrate;
the second supporting structure is arranged on one side surface of the second substrate, which is close to the first substrate;
the projections of the second bulge structure and the second support structure on the plane of the first substrate at least partially overlap;
when the display panel is pressed, the second protruding structure and the second supporting structure are in direct contact.
9. The display panel according to any one of claims 1 to 3, 6 or 7, wherein a length of the third spacer is equal to a length of the first spacer in a direction perpendicular to a plane in which the first substrate is located;
both sides of the third spacer are respectively contacted with the surfaces of the first substrate and the second substrate.
10. A display device comprising a display panel as claimed in any one of claims 1-9.
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| CN202210754898.6A CN115016183B (en) | 2022-06-30 | 2022-06-30 | Display panel and display device |
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| CN115016183B true CN115016183B (en) | 2023-11-14 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20120115021A (en) * | 2011-04-08 | 2012-10-17 | 엘지디스플레이 주식회사 | Liquid crystal display device for preventing gallaxy problem |
| KR20130066265A (en) * | 2011-12-12 | 2013-06-20 | 엘지디스플레이 주식회사 | Liquid crystal display panel |
| CN107045232A (en) * | 2017-04-26 | 2017-08-15 | 厦门天马微电子有限公司 | Preparation method, liquid crystal display panel and the liquid crystal display device of liquid crystal display panel |
| CN209471321U (en) * | 2018-12-25 | 2019-10-08 | 惠科股份有限公司 | A kind of display panel and display device |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20120115021A (en) * | 2011-04-08 | 2012-10-17 | 엘지디스플레이 주식회사 | Liquid crystal display device for preventing gallaxy problem |
| KR20130066265A (en) * | 2011-12-12 | 2013-06-20 | 엘지디스플레이 주식회사 | Liquid crystal display panel |
| CN107045232A (en) * | 2017-04-26 | 2017-08-15 | 厦门天马微电子有限公司 | Preparation method, liquid crystal display panel and the liquid crystal display device of liquid crystal display panel |
| CN209471321U (en) * | 2018-12-25 | 2019-10-08 | 惠科股份有限公司 | A kind of display panel and display device |
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