A liquid crystal display panel and display device

Abstract

The application discloses a display panel and a display device, the display panel comprises a first substrate, a second substrate and a spacer, the second substrate is arranged opposite to the first substrate; the spacer is formed on the first substrate and located between the first substrate and the second substrate; the spacer comprises a combined spacer, the combined spacer comprises an auxiliary spacer and at least two main spacers, and the auxiliary spacer is connected with the main spacers. The application can increase the integrity of the combined spacer by additionally arranging the auxiliary spacer beside the main spacer in the combined spacer, and the auxiliary spacer can fix and strengthen the main spacers, and also improve the peeling of the main spacers.

Description

[0001] This application is a divisional application of Chinese patent application filed on January 9, 2019, with application number 201910018453.X and entitled "A Display Panel and Display Device", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This invention relates to the field of display technology, and more particularly to a display panel and a display device. Background Technology

[0003] Liquid crystal displays (TFT-LCDs) contain two types of spacers within the liquid crystal cell: one type maintains the cell thickness under normal conditions, while the other type provides support only when subjected to external pressure. These spacers are sometimes designed as a composite structure, but composite spacers are prone to peeling off.

[0004] Spacer peeling can affect the detection of spacers during manufacturing, and may even affect the function of spacers. It is also sensitive to changes in machine production parameters. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a display panel and display device that improves the negative impact caused by the peeling off of spacers.

[0006] To achieve the above objectives, the present invention provides a display panel comprising a first substrate, a second substrate, and spacers, wherein the second substrate is disposed opposite to the first substrate; the spacers are formed on the first substrate and located between the first substrate and the second substrate; the spacers include combined spacers, the combined spacers including auxiliary spacers and at least two main spacers, the auxiliary spacers being connected to the main spacers.

[0007] Optionally, the height of the auxiliary spacer is lower than the height of the main spacer.

[0008] Optionally, the auxiliary spacer may be polygonal in shape.

[0009] Optionally, the auxiliary spacer may be arc-shaped.

[0010] Optionally, the auxiliary spacers are cross-shaped.

[0011] Optionally, the height of the auxiliary spacer is not less than half the height of the main spacer and not more than two-thirds the height of the main spacer.

[0012] Optionally, the auxiliary spacer includes a branch that is connected to the main spacer.

[0013] Optionally, the number of the branches corresponds to the number of the main spacers, and they are connected in a one-to-one correspondence.

[0014] The present invention also discloses a display panel, the display panel including a first substrate, a second substrate and spacers, the second substrate being disposed opposite to the first substrate; the spacers being formed on the first substrate and located between the first substrate and the second substrate; the spacers including combined spacers, the combined spacers including auxiliary spacers and at least two main spacers, the auxiliary spacers being connected to the main spacers;

[0015] The auxiliary spacer is polygonal or arc-shaped;

[0016] The height of the auxiliary spacer is not less than half the height of the main spacer and not more than two-thirds the height of the main spacer.

[0017] The auxiliary spacer includes branches, the number of which corresponds to the number of the main spacers, and the branches are connected to the main spacers in a one-to-one correspondence.

[0018] The overlapping surfaces between the auxiliary spacers and each of the main spacers are all closed.

[0019] The present invention also discloses a display device, the display device comprising any of the display panels described above.

[0020] Compared to the scheme where no auxiliary spacer is set next to the main spacer in the combined spacer, this application can increase the integrity of the combined spacer by adding an auxiliary spacer next to the main spacer in the combined spacer, so that the auxiliary spacer is connected to the main spacer. Moreover, the auxiliary spacer can fix and strengthen the main spacer, and also improve the peeling of the main spacer. Attached Figure Description

[0021] The accompanying drawings, which form part of the specification, are used to provide a further understanding of the embodiments of this application and illustrate the implementation methods of this application, together with the textual description, to explain the principles of this application. Obviously, the drawings described below are merely some embodiments of this application, and those skilled in the art can obtain other drawings based on these drawings without any creative effort. In the drawings:

[0022] Figure 1 These are schematic diagrams of several combinations of spacers;

[0023] Figure 2 This is a schematic diagram illustrating the peeling of a combination spacer in an exemplary technique;

[0024] Figure 3This is a schematic diagram of the density distribution of peeling spacers in an exemplary technique;

[0025] Figure 4 This is a schematic diagram of several auxiliary spacers according to an embodiment of the present invention;

[0026] Figure 5 This is a schematic diagram of the distribution of a combination of spacers on a first substrate, representing an exemplary technology.

[0027] Figure 6 This is a schematic diagram illustrating an exemplary technique where spacers are distributed between a first substrate and a second substrate.

[0028] Figure 7 This is a schematic diagram illustrating an exemplary technique where a spacer is fixed onto a color resist layer;

[0029] Figure 8 This is a schematic diagram illustrating an exemplary technique where spacers are fixed onto a black matrix;

[0030] Figure 9 This is a schematic diagram of a polygonal auxiliary spacer according to an embodiment of the present invention;

[0031] Figure 10 This is a schematic diagram of a circular auxiliary spacer according to another embodiment of the present invention;

[0032] Figure 11 This is a schematic diagram of a cross-shaped auxiliary spacer according to another embodiment of the present invention;

[0033] Figure 12 This is a schematic diagram of an elliptical auxiliary spacer according to another embodiment of the present invention;

[0034] Figure 13 This is a schematic diagram of an enclosed auxiliary spacer according to another embodiment of the present invention;

[0035] Figure 14 This is a schematic diagram of another embodiment of the present invention in which auxiliary spacers and main spacers are arranged in a one-to-one correspondence;

[0036] Figure 15 This is a schematic diagram of an auxiliary spacer disposed between adjacent main spacers according to another embodiment of the present invention;

[0037] Figure 16 This is a schematic diagram of the display device of the present invention.

[0038] Wherein, 100 is a display device; 110 is a display panel; 111 is a substrate; 112 is a spacer; 113 is an auxiliary spacer; 114 is a main spacer; 115 is a branch; 116 is a peeling material; 117 is a first substrate; 118 is a second substrate; 119 is a combined spacer; 120 is a black matrix; 121 is a color resist layer; and 122 is a substrate. Detailed Implementation

[0039] It should be understood that the terminology, specific structural and functional details used herein are merely for describing particular embodiments and are representative. However, this application may be implemented in many alternative forms and should not be construed as being limited to the embodiments set forth herein.

[0040] In the description of this application, the term "a plurality of" means two or more. The term "comprising" and any variations thereof mean a non-exclusive inclusion, which may include or add one or more other features, integers, steps, operations, units, components and / or combinations thereof.

[0041] Furthermore, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium, or internal connections between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0042] The spacers (PS, photo spacers / film pillars) are located between the first substrate (color filter substrate) and the second substrate (array substrate) of the liquid crystal display panel, and are used to control the distance and uniformity between the first and second substrates; such as Figure 1 and Figures 4 to 8 The diagram shown illustrates several distributions of the main spacers in a composite spacer. The inventor discovered that the main spacers in a composite spacer are prone to peeling off (e.g. Figure 2 and Figure 3 As shown in the figure, it affects the detection in the process and even the function of the spacers, and is also sensitive to changes in machine production parameters.

[0043] The present invention will be further described below with reference to the accompanying drawings and optional embodiments.

[0044] like Figures 4 to 15As shown, an embodiment of the present invention discloses a display panel 110, which includes a first substrate 117, a second substrate 118, and a spacer 112. The second substrate 118 is disposed opposite to the first substrate 117. The spacer 112 is formed on the first substrate 117 and located between the first substrate 117 and the second substrate 118. The spacer 112 includes a combined spacer 119, which includes an auxiliary spacer 113 and at least two main spacers 114. The auxiliary spacer 113 is connected to the main spacers 114. (Relative to...) Figure 1 In this solution, an auxiliary spacer 113 is added next to the main spacer 114 in the combined spacer 119, so that the auxiliary spacer 113 is connected to the main spacer 114, thereby increasing the integrity of the combined spacer 119. Moreover, the auxiliary spacer 113 can fix and strengthen the main spacer 114, and also improve the peeling material 116 of the main spacer 114. Furthermore, the auxiliary spacer 113 plays an auxiliary role to the main spacer 114 and will not affect the normal use of the main spacer 114.

[0045] in, Figure 5 This is a schematic diagram showing the distribution of a portion of the main spacers 114 in the combined spacers 119. It can be combined with... Figure 1 We can understand this by examining the distribution of spacers 112 within the structure.

[0046] like Figures 6 to 8 As shown, in one embodiment, the first substrate 117 includes a substrate 122, a black matrix 120, and a color resist layer 121. Both the black matrix 120 and the color resist layer 121 are formed on the substrate 122, and the black matrix 120 and the color resist layer 121 are connected. The spacer 112 is directly fixed to either the black matrix 120 or the color resist layer 121. It should be noted that this application is also applicable to spacers located in other positions within the display panel, and can also solve the problem of peeling off the corresponding spacers.

[0047] like Figure 4 and Figure 9 As shown, in one embodiment, the auxiliary spacer 113 is polygonal in shape. Considering that the main spacers 114 have different distribution shapes, setting the auxiliary spacer 113 to a polygonal shape can adapt to various distribution shapes and is convenient to place next to the main spacers 114 with different distribution shapes. This allows the auxiliary spacer 113 to better interact with the main spacers 114, thereby effectively improving the removal of the peeling material 116 from the main spacers 114. At the same time, because the polygonal auxiliary spacer 113 is applicable to a wide range of environments, it relatively reduces the difficulty of the manufacturing process.

[0048] like Figures 9 to 12As shown, in one embodiment, the height of the auxiliary spacer 113 is lower than the height of the main spacer 114. Because the main spacer 114 provides support, if the height of the auxiliary spacer 113 is set higher than or equal to the height of the main spacer 114, it will affect the function of the main spacer 114. Therefore, in this solution, the height of the auxiliary spacer 113 is set lower than the height of the main spacer 114. This can improve the removal of the peeling material 116 from the main spacer 114 without affecting its normal function.

[0049] In one embodiment, the height of the auxiliary spacer 113 is not less than half the height of the main spacer 114 and not more than two-thirds the height of the main spacer 114. The inventors have found that when the height of the auxiliary spacer 113 is set within the range of half to two-thirds of the height of the main spacer 114, it effectively mitigates the peeling material 116 of the main spacer 114. Furthermore, the auxiliary spacer 113 within this height range does not adversely affect the normal function of the main spacer 114. Simultaneously, the auxiliary spacer 113 can relatively strengthen the structure of the main spacer 114.

[0050] like Figure 10 and Figure 12 As shown, in one embodiment, the auxiliary spacer 113 is arc-shaped. Considering that the surface of the main spacer 114 is usually arc-shaped, in order to make the auxiliary spacer 113 fit better with the main spacer 114, the shape of the auxiliary spacer 113 is set to arc. When the auxiliary spacer 113 fits with the main spacer 114, it is fixed more firmly, and it will also provide better protection for the surface of the main spacer 114. This can effectively improve the problem of peeling off the main spacer 114.

[0051] like Figure 11 As shown, in one embodiment, the auxiliary spacer 113 is cross-shaped. The cross-shaped auxiliary spacer 113 has good structural stability and can be better fixed with the main spacer 114, thereby improving the removal of the peeling material 116 from the main spacer 114. Moreover, the cross-shaped auxiliary spacer 113 has a large proportion of effective functional parts, resulting in high material utilization and low cost, making it suitable for use between relatively cross-distributed main spacers.

[0052] In one embodiment, the auxiliary spacer 113 includes a branch 115 connected to the main spacer 114. Because the main spacer 114 has an irregular distribution shape, the branch 115 in this design can reduce material waste in the auxiliary spacer 113 and improve material utilization. Furthermore, this can also improve the removal of flaking material 116 from the main spacer 114. Simultaneously, the branch 115 can reinforce both the main spacer 114 and the auxiliary spacer 113.

[0053] In one embodiment, the number of branches 115 corresponds to the number of main spacers 114, and they are connected one-to-one. This can be applied to combinations of main spacers 114 with any shape distribution, and each main spacer 114 has a corresponding auxiliary spacer 113 to assist it, which can improve the peeling material 116 of each main spacer 114, while making high utilization efficiency of the branches 115.

[0054] Specifically, for the polygonal auxiliary spacer 113, each corner is the branch 115; for the elliptical auxiliary spacer 113, the pointed end is the branch 115; and for the intersecting auxiliary spacer 113, the protruding part is the branch 115.

[0055] Of course, the auxiliary spacer 113 can also be set to other shapes, such as a combination of polygons and arcs, or some appearance design adopted for the purpose of increasing, as long as it can meet the needs of use.

[0056] like Figure 13 and Figure 14 As shown, in one embodiment, the overlapping surfaces between the auxiliary spacer 113 and each main spacer 114 are all closed. Since the overlapping surfaces between the auxiliary spacer 113 and each main spacer 114 are all closed, the auxiliary spacer 113 both connects each group of main spacers 114 and surrounds each main spacer 114. This improves the resistance to peeling of the main spacers 114 in all directions, and the auxiliary spacer 113 also strengthens and fixes each main spacer 114, making the performance of the main spacers 114 more stable.

[0057] like Figure 14 As shown, in one embodiment, the auxiliary spacers 113 are arranged in a one-to-one correspondence with each main spacer 114. This one-to-one correspondence ensures that the auxiliary spacers 113 effectively improve the peeling of each main spacer 114 without any omissions. Furthermore, this one-to-one arrangement means that areas where the auxiliary spacers 113 are not needed are left untouched, resulting in higher material utilization efficiency for the auxiliary spacers 113. Simultaneously, each auxiliary spacer 113 only assists its corresponding main spacer 114, making the function of the auxiliary spacers 113 more focused and improving the peeling improvement effect on the main spacers 114.

[0058] like Figure 15As shown, in one embodiment, the auxiliary spacer 113 is disposed between adjacent main spacers 114. The inventors have discovered that there is a large amount of peeling material 116 in the area between adjacent main spacers 114. Therefore, this solution places the auxiliary spacer 113 between adjacent main spacers 114, which can effectively improve the peeling between adjacent main spacers 114, thereby greatly reducing the impact of peeling material 116 on the main spacers 114. Relatively speaking, the utilization rate of the auxiliary spacer 113 is also higher.

[0059] In one embodiment, the overlapping surfaces of the auxiliary spacer 113 and each main spacer 114 are all closed, and the auxiliary spacer 113 is disposed between adjacent main spacers 114. The fact that the overlapping surfaces of the auxiliary spacer 113 and each main spacer 114 are all closed means that the auxiliary spacer 113 both connects each group of main spacers 114 and surrounds each main spacer 114. This improves the peeling of the main spacers 114 in all directions, and the auxiliary spacer 113 also strengthens and fixes each main spacer 114, making the performance of the main spacers 114 more stable. The inventors have found that there are many peeling materials 116 in the area between adjacent main spacers 114. Therefore, this solution places the auxiliary spacer 113 between adjacent main spacers 114, which effectively improves the peeling between adjacent main spacers 114, thereby greatly reducing the impact of peeling materials 116 on the main spacers 114. Relatively speaking, the utilization rate of the auxiliary spacer 113 is also higher.

[0060] like Figures 4 to 14As shown, the present invention also discloses a display panel 110, which includes a first substrate 117, a second substrate 118, and spacers 112. The second substrate 118 is disposed opposite to the first substrate 117. The spacers 112 are formed on the first substrate 117 and located between the first substrate 117 and the second substrate 118. The spacers 112 include combined spacers 119, which include auxiliary spacers 113 and at least two main spacers 114. The auxiliary spacers 113 and the main spacers 114 are connected together. The main spacers 114 are connected; the auxiliary spacers 113 are polygonal, arc-shaped, or cross-shaped; the height of the auxiliary spacers 113 is not less than half the height of the main spacers 114 and not more than two-thirds the height of the main spacers 114; the auxiliary spacers 113 include branches 115, the number of branches 115 corresponds to the number of main spacers 114, and the branches 115 are connected to the main spacers 114 in a one-to-one correspondence; the overlapping surfaces between the auxiliary spacers 113 and each main spacer 114 are all closed. By adding an auxiliary spacer 113 next to the main spacer 114 in the combined spacer 119, connecting the auxiliary spacer 113 to the main spacer 114, the integrity of the combined spacer is increased. This can fix and strengthen the main spacer 114, and improve the peeling material 116 of the main spacer 114. Considering that the distribution shape of the main spacer 114 is not uniform, the shape of the auxiliary spacer 113 is set as polygonal, arc-shaped, or cross-shaped to adapt to various distribution shapes. This can effectively improve the peeling material 116 of the main spacer 114 and also relatively reduce the difficulty of the manufacturing process. The inventors found that the height of the auxiliary spacer 113 is set in the range of half to two-thirds of the height of the main spacer 114. When the main spacer 114 is in use, it effectively improves the removal of the peeling material 116. The number of branches 115 corresponds to the number of main spacers 114 and they are connected one by one. This can improve the removal of the peeling material 116 of each main spacer 114 and also improve the utilization efficiency of the branches 115. The overlapping surfaces between the auxiliary spacer 113 and each main spacer 114 are all closed. That is, the auxiliary spacer 113 not only connects each group of main spacers 114, but also surrounds each main spacer 114. This can improve the peeling of the main spacers 114 in all directions. Moreover, the auxiliary spacer 113 strengthens and fixes each main spacer 114, making the performance of the main spacers 114 more stable.

[0061] like Figure 16 As shown, as another embodiment of the present invention, a display device 100 is disclosed, which includes a display panel 110 as described above.

[0062] The technical solution of this invention can be widely used in various display panels, such as twisted nematic (TN) display panels, in-plane switching (IPS) display panels, vertical alignment (VA) display panels, and multi-domain vertical alignment (MVA) display panels. Of course, it can also be used in other types of display panels, including those with combined spacers (Photo Spacers, PS), and the above solution is applicable to all of them.

[0063] The above description, in conjunction with specific optional embodiments, provides a further detailed explanation of the present invention and should not be construed as limiting the specific implementation of the invention to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the inventive concept, and all such modifications and substitutions should be considered within the scope of protection of the present invention.

Claims

1. A liquid crystal display panel, characterized in that, include: First substrate; The second substrate is disposed opposite to the first substrate; as well as A spacer is formed on the first substrate and located between the first substrate and the second substrate; The spacer includes a combined spacer, which includes an auxiliary spacer and at least two main spacers, wherein the auxiliary spacer is directly connected to the main spacers. The auxiliary spacer is polygonal in shape; The auxiliary spacer includes a branch, which is connected to the main spacer; in the polygonal auxiliary spacer, each corner of the auxiliary spacer is a branch. In one of the combined spacers, the number of the branches corresponds to the number of the main spacers, and they are connected one-to-one. The main spacer is arranged around the auxiliary spacer; The height of the auxiliary spacer is not less than half the height of the main spacer and not more than two-thirds the height of the main spacer. The first substrate includes a substrate, a black matrix, and a color resist layer. The black matrix and the color resist layer are both formed on the substrate, and the black matrix and the color resist layer are connected. The main spacer and the auxiliary spacer are disposed on the black matrix or on the color resist layer on the black matrix.

2. A display device, characterized in that, Includes the liquid crystal display panel as described in claim 1.

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